mirror of
https://github.com/Fishwaldo/Star64_linux.git
synced 2025-03-16 04:04:06 +00:00
Merge drm/drm-next into drm-misc-next
Backmerging to get v6.5-rc2. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
This commit is contained in:
Thomas Zimmermann
commit
61b7369483
13117 changed files with 448659 additions and 149115 deletions
|
|
@ -254,6 +254,7 @@ ForEachMacros:
|
|||
- 'for_each_free_mem_range'
|
||||
- 'for_each_free_mem_range_reverse'
|
||||
- 'for_each_func_rsrc'
|
||||
- 'for_each_group_device'
|
||||
- 'for_each_group_evsel'
|
||||
- 'for_each_group_member'
|
||||
- 'for_each_hstate'
|
||||
|
|
|
|||
1
.gitattributes
vendored
1
.gitattributes
vendored
|
|
@ -2,3 +2,4 @@
|
|||
*.[ch] diff=cpp
|
||||
*.dts diff=dts
|
||||
*.dts[io] diff=dts
|
||||
*.rs diff=rust
|
||||
|
|
|
|||
4
.gitignore
vendored
4
.gitignore
vendored
|
|
@ -16,7 +16,6 @@
|
|||
*.bin
|
||||
*.bz2
|
||||
*.c.[012]*.*
|
||||
*.cover
|
||||
*.dt.yaml
|
||||
*.dtb
|
||||
*.dtbo
|
||||
|
|
@ -34,7 +33,6 @@
|
|||
*.lz4
|
||||
*.lzma
|
||||
*.lzo
|
||||
*.mbx
|
||||
*.mod
|
||||
*.mod.c
|
||||
*.o
|
||||
|
|
@ -51,7 +49,6 @@
|
|||
*.symversions
|
||||
*.tab.[ch]
|
||||
*.tar
|
||||
*.usyms
|
||||
*.xz
|
||||
*.zst
|
||||
Module.symvers
|
||||
|
|
@ -112,7 +109,6 @@ modules.order
|
|||
#
|
||||
/include/config/
|
||||
/include/generated/
|
||||
/include/ksym/
|
||||
/arch/*/include/generated/
|
||||
|
||||
# stgit generated dirs
|
||||
|
|
|
|||
16
.mailmap
16
.mailmap
|
|
@ -5,7 +5,8 @@
|
|||
# same person appearing not to be so or badly displayed. Also allows for
|
||||
# old email addresses to map to new email addresses.
|
||||
#
|
||||
# For format details, see "MAPPING AUTHORS" in "man git-shortlog".
|
||||
# For format details, see "man gitmailmap" or "MAPPING AUTHORS" in
|
||||
# "man git-shortlog" on older systems.
|
||||
#
|
||||
# Please keep this list dictionary sorted.
|
||||
#
|
||||
|
|
@ -70,6 +71,8 @@ Baolin Wang <baolin.wang@linux.alibaba.com> <baolin.wang@unisoc.com>
|
|||
Baolin Wang <baolin.wang@linux.alibaba.com> <baolin.wang7@gmail.com>
|
||||
Bart Van Assche <bvanassche@acm.org> <bart.vanassche@sandisk.com>
|
||||
Bart Van Assche <bvanassche@acm.org> <bart.vanassche@wdc.com>
|
||||
Ben Dooks <ben-linux@fluff.org> <ben.dooks@simtec.co.uk>
|
||||
Ben Dooks <ben-linux@fluff.org> <ben.dooks@sifive.com>
|
||||
Ben Gardner <bgardner@wabtec.com>
|
||||
Ben M Cahill <ben.m.cahill@intel.com>
|
||||
Ben Widawsky <bwidawsk@kernel.org> <ben@bwidawsk.net>
|
||||
|
|
@ -175,12 +178,17 @@ Gustavo Padovan <padovan@profusion.mobi>
|
|||
Hanjun Guo <guohanjun@huawei.com> <hanjun.guo@linaro.org>
|
||||
Heiko Carstens <hca@linux.ibm.com> <h.carstens@de.ibm.com>
|
||||
Heiko Carstens <hca@linux.ibm.com> <heiko.carstens@de.ibm.com>
|
||||
Heiko Stuebner <heiko@sntech.de> <heiko.stuebner@bqreaders.com>
|
||||
Heiko Stuebner <heiko@sntech.de> <heiko.stuebner@theobroma-systems.com>
|
||||
Heiko Stuebner <heiko@sntech.de> <heiko.stuebner@vrull.eu>
|
||||
Henk Vergonet <Henk.Vergonet@gmail.com>
|
||||
Henrik Kretzschmar <henne@nachtwindheim.de>
|
||||
Henrik Rydberg <rydberg@bitmath.org>
|
||||
Herbert Xu <herbert@gondor.apana.org.au>
|
||||
Huacai Chen <chenhuacai@kernel.org> <chenhc@lemote.com>
|
||||
Huacai Chen <chenhuacai@kernel.org> <chenhuacai@loongson.cn>
|
||||
J. Bruce Fields <bfields@fieldses.org> <bfields@redhat.com>
|
||||
J. Bruce Fields <bfields@fieldses.org> <bfields@citi.umich.edu>
|
||||
Jacob Shin <Jacob.Shin@amd.com>
|
||||
Jaegeuk Kim <jaegeuk@kernel.org> <jaegeuk@google.com>
|
||||
Jaegeuk Kim <jaegeuk@kernel.org> <jaegeuk.kim@samsung.com>
|
||||
|
|
@ -238,6 +246,7 @@ John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
|
|||
John Stultz <johnstul@us.ibm.com>
|
||||
<jon.toppins+linux@gmail.com> <jtoppins@cumulusnetworks.com>
|
||||
<jon.toppins+linux@gmail.com> <jtoppins@redhat.com>
|
||||
Jonas Gorski <jonas.gorski@gmail.com> <jogo@openwrt.org>
|
||||
Jordan Crouse <jordan@cosmicpenguin.net> <jcrouse@codeaurora.org>
|
||||
<josh@joshtriplett.org> <josh@freedesktop.org>
|
||||
<josh@joshtriplett.org> <josh@kernel.org>
|
||||
|
|
@ -271,6 +280,10 @@ Krzysztof Kozlowski <krzk@kernel.org> <k.kozlowski@samsung.com>
|
|||
Krzysztof Kozlowski <krzk@kernel.org> <krzysztof.kozlowski@canonical.com>
|
||||
Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
|
||||
Kuogee Hsieh <quic_khsieh@quicinc.com> <khsieh@codeaurora.org>
|
||||
Lee Jones <lee@kernel.org> <joneslee@google.com>
|
||||
Lee Jones <lee@kernel.org> <lee.jones@canonical.com>
|
||||
Lee Jones <lee@kernel.org> <lee.jones@linaro.org>
|
||||
Lee Jones <lee@kernel.org> <lee@ubuntu.com>
|
||||
Leonard Crestez <leonard.crestez@nxp.com> Leonard Crestez <cdleonard@gmail.com>
|
||||
Leonardo Bras <leobras.c@gmail.com> <leonardo@linux.ibm.com>
|
||||
Leonard Göhrs <l.goehrs@pengutronix.de>
|
||||
|
|
@ -297,6 +310,7 @@ Marek Behún <kabel@kernel.org> <marek.behun@nic.cz>
|
|||
Marek Behún <kabel@kernel.org> Marek Behun <marek.behun@nic.cz>
|
||||
Mark Brown <broonie@sirena.org.uk>
|
||||
Mark Starovoytov <mstarovo@pm.me> <mstarovoitov@marvell.com>
|
||||
Markus Schneider-Pargmann <msp@baylibre.com> <mpa@pengutronix.de>
|
||||
Mark Yao <markyao0591@gmail.com> <mark.yao@rock-chips.com>
|
||||
Martin Kepplinger <martink@posteo.de> <martin.kepplinger@ginzinger.com>
|
||||
Martin Kepplinger <martink@posteo.de> <martin.kepplinger@puri.sm>
|
||||
|
|
|
|||
6
CREDITS
6
CREDITS
|
|
@ -383,6 +383,12 @@ E: tomas@nocrew.org
|
|||
W: http://tomas.nocrew.org/
|
||||
D: dsp56k device driver
|
||||
|
||||
N: Srivatsa S. Bhat
|
||||
E: srivatsa@csail.mit.edu
|
||||
D: Maintainer of Generic Paravirt-Ops subsystem
|
||||
D: Maintainer of VMware hypervisor interface
|
||||
D: Maintainer of VMware virtual PTP clock driver (ptp_vmw)
|
||||
|
||||
N: Ross Biro
|
||||
E: ross.biro@gmail.com
|
||||
D: Original author of the Linux networking code
|
||||
|
|
|
|||
|
|
@ -1,11 +1,11 @@
|
|||
What: /sys/o2cb
|
||||
Date: Dec 2005
|
||||
KernelVersion: 2.6.16
|
||||
Contact: ocfs2-devel@oss.oracle.com
|
||||
Contact: ocfs2-devel@lists.linux.dev
|
||||
Description: Ocfs2-tools looks at 'interface-revision' for versioning
|
||||
information. Each logmask/ file controls a set of debug prints
|
||||
and can be written into with the strings "allow", "deny", or
|
||||
"off". Reading the file returns the current state.
|
||||
Was renamed to /sys/fs/u2cb/
|
||||
Users: ocfs2-tools. It's sufficient to mail proposed changes to
|
||||
ocfs2-devel@oss.oracle.com.
|
||||
ocfs2-devel@lists.linux.dev.
|
||||
|
|
|
|||
|
|
@ -1,10 +1,10 @@
|
|||
What: /sys/o2cb symlink
|
||||
Date: May 2011
|
||||
KernelVersion: 3.0
|
||||
Contact: ocfs2-devel@oss.oracle.com
|
||||
Contact: ocfs2-devel@lists.linux.dev
|
||||
Description: This is a symlink: /sys/o2cb to /sys/fs/o2cb. The symlink is
|
||||
removed when new versions of ocfs2-tools which know to look
|
||||
in /sys/fs/o2cb are sufficiently prevalent. Don't code new
|
||||
software to look here, it should try /sys/fs/o2cb instead.
|
||||
Users: ocfs2-tools. It's sufficient to mail proposed changes to
|
||||
ocfs2-devel@oss.oracle.com.
|
||||
ocfs2-devel@lists.linux.dev.
|
||||
|
|
|
|||
|
|
@ -1,10 +1,10 @@
|
|||
What: /sys/fs/o2cb/
|
||||
Date: Dec 2005
|
||||
KernelVersion: 2.6.16
|
||||
Contact: ocfs2-devel@oss.oracle.com
|
||||
Contact: ocfs2-devel@lists.linux.dev
|
||||
Description: Ocfs2-tools looks at 'interface-revision' for versioning
|
||||
information. Each logmask/ file controls a set of debug prints
|
||||
and can be written into with the strings "allow", "deny", or
|
||||
"off". Reading the file returns the current state.
|
||||
Users: ocfs2-tools. It's sufficient to mail proposed changes to
|
||||
ocfs2-devel@oss.oracle.com.
|
||||
ocfs2-devel@lists.linux.dev.
|
||||
|
|
|
|||
7
Documentation/ABI/stable/sysfs-platform-wmi-bmof
Normal file
7
Documentation/ABI/stable/sysfs-platform-wmi-bmof
Normal file
|
|
@ -0,0 +1,7 @@
|
|||
What: /sys/bus/wmi/devices/05901221-D566-11D1-B2F0-00A0C9062910[-X]/bmof
|
||||
Date: Jun 2017
|
||||
KernelVersion: 4.13
|
||||
Description:
|
||||
Binary MOF metadata used to decribe the details of available ACPI WMI interfaces.
|
||||
|
||||
See Documentation/wmi/devices/wmi-bmof.rst for details.
|
||||
|
|
@ -3,19 +3,32 @@ Date: September 2022
|
|||
KernelVersion: 6.1
|
||||
Contact: Armin Wolf <W_Armin@gmx.de>
|
||||
Description:
|
||||
This file contains the contents of the fan sensor information buffer,
|
||||
which contains fan sensor entries and a terminating character (0xFF).
|
||||
This file contains the contents of the fan sensor information
|
||||
buffer, which contains fan sensor entries and a terminating
|
||||
character (0xFF).
|
||||
|
||||
Each fan sensor entry consists of three bytes with an unknown meaning,
|
||||
interested people may use this file for reverse-engineering.
|
||||
Each fan sensor entry contains:
|
||||
|
||||
- fan type (single byte)
|
||||
- fan speed in RPM (two bytes, little endian)
|
||||
|
||||
See Documentation/wmi/devices/dell-wmi-ddv.rst for details.
|
||||
|
||||
What: /sys/kernel/debug/dell-wmi-ddv-<wmi_device_name>/thermal_sensor_information
|
||||
Date: September 2022
|
||||
KernelVersion: 6.1
|
||||
Contact: Armin Wolf <W_Armin@gmx.de>
|
||||
Description:
|
||||
This file contains the contents of the thermal sensor information buffer,
|
||||
which contains thermal sensor entries and a terminating character (0xFF).
|
||||
This file contains the contents of the thermal sensor information
|
||||
buffer, which contains thermal sensor entries and a terminating
|
||||
character (0xFF).
|
||||
|
||||
Each thermal sensor entry consists of five bytes with an unknown meaning,
|
||||
interested people may use this file for reverse-engineering.
|
||||
Each thermal sensor entry contains:
|
||||
|
||||
- thermal type (single byte)
|
||||
- current temperature (single byte)
|
||||
- min. temperature (single byte)
|
||||
- max. temperature (single byte)
|
||||
- unknown field (single byte)
|
||||
|
||||
See Documentation/wmi/devices/dell-wmi-ddv.rst for details.
|
||||
|
|
|
|||
|
|
@ -95,3 +95,25 @@ Description:
|
|||
This file does not exist if the HBA driver does not implement
|
||||
support for the SATA NCQ priority feature, regardless of the
|
||||
device support for this feature.
|
||||
|
||||
|
||||
What: /sys/block/*/device/cdl_supported
|
||||
Date: May, 2023
|
||||
KernelVersion: v6.5
|
||||
Contact: linux-scsi@vger.kernel.org
|
||||
Description:
|
||||
(RO) Indicates if the device supports the command duration
|
||||
limits feature found in some ATA and SCSI devices.
|
||||
|
||||
|
||||
What: /sys/block/*/device/cdl_enable
|
||||
Date: May, 2023
|
||||
KernelVersion: v6.5
|
||||
Contact: linux-scsi@vger.kernel.org
|
||||
Description:
|
||||
(RW) For a device supporting the command duration limits
|
||||
feature, write to the file to turn on or off the feature.
|
||||
By default this feature is turned off.
|
||||
Writing "1" to this file enables the use of command duration
|
||||
limits for read and write commands in the kernel and turns on
|
||||
the feature on the device. Writing "0" disables the feature.
|
||||
|
|
|
|||
|
|
@ -90,6 +90,60 @@ Description:
|
|||
counter does not freeze at the boundary points, but
|
||||
counts continuously throughout.
|
||||
|
||||
interrupt on terminal count:
|
||||
The output signal is initially low, and will remain low
|
||||
until the counter reaches zero. The output signal then
|
||||
goes high and remains high until a new preset value is
|
||||
set.
|
||||
|
||||
hardware retriggerable one-shot:
|
||||
The output signal is initially high. The output signal
|
||||
will go low by a trigger input signal, and will remain
|
||||
low until the counter reaches zero. The output will then
|
||||
go high and remain high until the next trigger. A
|
||||
trigger results in loading the counter to the preset
|
||||
value and setting the output signal low, thus starting
|
||||
the one-shot pulse.
|
||||
|
||||
rate generator:
|
||||
The output signal is initially high. When the counter
|
||||
has decremented to 1, the output signal goes low for one
|
||||
clock pulse. The output signal then goes high again, the
|
||||
counter is reloaded to the preset value, and the process
|
||||
repeats in a periodic manner as such.
|
||||
|
||||
square wave mode:
|
||||
The output signal is initially high.
|
||||
|
||||
If the initial count is even, the counter is decremented
|
||||
by two on succeeding clock pulses. When the count
|
||||
expires, the output signal changes value and the
|
||||
counter is reloaded to the preset value. The process
|
||||
repeats in periodic manner as such.
|
||||
|
||||
If the initial count is odd, the initial count minus one
|
||||
(an even number) is loaded and then is decremented by
|
||||
two on succeeding clock pulses. One clock pulse after
|
||||
the count expires, the output signal goes low and the
|
||||
counter is reloaded to the preset value minus one.
|
||||
Succeeding clock pulses decrement the count by two. When
|
||||
the count expires, the output goes high again and the
|
||||
counter is reloaded to the preset value minus one. The
|
||||
process repeats in a periodic manner as such.
|
||||
|
||||
software triggered strobe:
|
||||
The output signal is initially high. When the count
|
||||
expires, the output will go low for one clock pulse and
|
||||
then go high again. The counting sequence is "triggered"
|
||||
by setting the preset value.
|
||||
|
||||
hardware triggered strobe:
|
||||
The output signal is initially high. Counting is started
|
||||
by a trigger input signal. When the count expires, the
|
||||
output signal will go low for one clock pulse and then
|
||||
go high again. A trigger results in loading the counter
|
||||
to the preset value.
|
||||
|
||||
What: /sys/bus/counter/devices/counterX/countY/count_mode_available
|
||||
What: /sys/bus/counter/devices/counterX/countY/error_noise_available
|
||||
What: /sys/bus/counter/devices/counterX/countY/function_available
|
||||
|
|
|
|||
|
|
@ -58,6 +58,54 @@ Description:
|
|||
affinity for this device.
|
||||
|
||||
|
||||
What: /sys/bus/cxl/devices/memX/security/state
|
||||
Date: June, 2023
|
||||
KernelVersion: v6.5
|
||||
Contact: linux-cxl@vger.kernel.org
|
||||
Description:
|
||||
(RO) Reading this file will display the CXL security state for
|
||||
that device. Such states can be: 'disabled', 'sanitize', when
|
||||
a sanitization is currently underway; or those available only
|
||||
for persistent memory: 'locked', 'unlocked' or 'frozen'. This
|
||||
sysfs entry is select/poll capable from userspace to notify
|
||||
upon completion of a sanitize operation.
|
||||
|
||||
|
||||
What: /sys/bus/cxl/devices/memX/security/sanitize
|
||||
Date: June, 2023
|
||||
KernelVersion: v6.5
|
||||
Contact: linux-cxl@vger.kernel.org
|
||||
Description:
|
||||
(WO) Write a boolean 'true' string value to this attribute to
|
||||
sanitize the device to securely re-purpose or decommission it.
|
||||
This is done by ensuring that all user data and meta-data,
|
||||
whether it resides in persistent capacity, volatile capacity,
|
||||
or the LSA, is made permanently unavailable by whatever means
|
||||
is appropriate for the media type. This functionality requires
|
||||
the device to be not be actively decoding any HPA ranges.
|
||||
|
||||
|
||||
What /sys/bus/cxl/devices/memX/security/erase
|
||||
Date: June, 2023
|
||||
KernelVersion: v6.5
|
||||
Contact: linux-cxl@vger.kernel.org
|
||||
Description:
|
||||
(WO) Write a boolean 'true' string value to this attribute to
|
||||
secure erase user data by changing the media encryption keys for
|
||||
all user data areas of the device.
|
||||
|
||||
|
||||
What: /sys/bus/cxl/devices/memX/firmware/
|
||||
Date: April, 2023
|
||||
KernelVersion: v6.5
|
||||
Contact: linux-cxl@vger.kernel.org
|
||||
Description:
|
||||
(RW) Firmware uploader mechanism. The different files under
|
||||
this directory can be used to upload and activate new
|
||||
firmware for CXL devices. The interfaces under this are
|
||||
documented in sysfs-class-firmware.
|
||||
|
||||
|
||||
What: /sys/bus/cxl/devices/*/devtype
|
||||
Date: June, 2021
|
||||
KernelVersion: v5.14
|
||||
|
|
|
|||
|
|
@ -292,6 +292,16 @@ Description:
|
|||
which is marked with early_stop has failed to initialize, it will ignore
|
||||
all future connections until this attribute is clear.
|
||||
|
||||
What: /sys/bus/usb/devices/.../<hub_interface>/port<X>/state
|
||||
Date: June 2023
|
||||
Contact: Roy Luo <royluo@google.com>
|
||||
Description:
|
||||
Indicates current state of the USB device attached to the port.
|
||||
Valid states are: 'not-attached', 'attached', 'powered',
|
||||
'reconnecting', 'unauthenticated', 'default', 'addressed',
|
||||
'configured', and 'suspended'. This file supports poll() to
|
||||
monitor the state change from user space.
|
||||
|
||||
What: /sys/bus/usb/devices/.../power/usb2_lpm_l1_timeout
|
||||
Date: May 2013
|
||||
Contact: Mathias Nyman <mathias.nyman@linux.intel.com>
|
||||
|
|
|
|||
|
|
@ -243,8 +243,8 @@ Description:
|
|||
|
||||
index:
|
||||
Used with HDD and NVME authentication to set the drive index
|
||||
that is being referenced (e.g hdd0, hdd1 etc)
|
||||
This attribute defaults to device 0.
|
||||
that is being referenced (e.g hdd1, hdd2 etc)
|
||||
This attribute defaults to device 1.
|
||||
|
||||
certificate, signature, save_signature:
|
||||
These attributes are used for certificate based authentication. This is
|
||||
|
|
|
|||
5
Documentation/ABI/testing/sysfs-class-led-driver-aw200xx
Normal file
5
Documentation/ABI/testing/sysfs-class-led-driver-aw200xx
Normal file
|
|
@ -0,0 +1,5 @@
|
|||
What: /sys/class/leds/<led>/dim
|
||||
Date: May 2023
|
||||
Description: 64-level DIM current. If you write a negative value or
|
||||
"auto", the dim will be calculated according to the
|
||||
brightness.
|
||||
|
|
@ -13,6 +13,11 @@ Description:
|
|||
Specifies the duration of the LED blink in milliseconds.
|
||||
Defaults to 50 ms.
|
||||
|
||||
With hw_control ON, the interval value MUST be set to the
|
||||
default value and cannot be changed.
|
||||
Trying to set any value in this specific mode will return
|
||||
an EINVAL error.
|
||||
|
||||
What: /sys/class/leds/<led>/link
|
||||
Date: Dec 2017
|
||||
KernelVersion: 4.16
|
||||
|
|
@ -39,6 +44,9 @@ Description:
|
|||
If set to 1, the LED will blink for the milliseconds specified
|
||||
in interval to signal transmission.
|
||||
|
||||
With hw_control ON, the blink interval is controlled by hardware
|
||||
and won't reflect the value set in interval.
|
||||
|
||||
What: /sys/class/leds/<led>/rx
|
||||
Date: Dec 2017
|
||||
KernelVersion: 4.16
|
||||
|
|
@ -50,3 +58,84 @@ Description:
|
|||
|
||||
If set to 1, the LED will blink for the milliseconds specified
|
||||
in interval to signal reception.
|
||||
|
||||
With hw_control ON, the blink interval is controlled by hardware
|
||||
and won't reflect the value set in interval.
|
||||
|
||||
What: /sys/class/leds/<led>/hw_control
|
||||
Date: Jun 2023
|
||||
KernelVersion: 6.5
|
||||
Contact: linux-leds@vger.kernel.org
|
||||
Description:
|
||||
Communicate whether the LED trigger modes are driven by hardware
|
||||
or software fallback is used.
|
||||
|
||||
If 0, the LED is using software fallback to blink.
|
||||
|
||||
If 1, the LED is using hardware control to blink and signal the
|
||||
requested modes.
|
||||
|
||||
What: /sys/class/leds/<led>/link_10
|
||||
Date: Jun 2023
|
||||
KernelVersion: 6.5
|
||||
Contact: linux-leds@vger.kernel.org
|
||||
Description:
|
||||
Signal the link speed state of 10Mbps of the named network device.
|
||||
|
||||
If set to 0 (default), the LED's normal state is off.
|
||||
|
||||
If set to 1, the LED's normal state reflects the link state
|
||||
speed of 10MBps of the named network device.
|
||||
Setting this value also immediately changes the LED state.
|
||||
|
||||
What: /sys/class/leds/<led>/link_100
|
||||
Date: Jun 2023
|
||||
KernelVersion: 6.5
|
||||
Contact: linux-leds@vger.kernel.org
|
||||
Description:
|
||||
Signal the link speed state of 100Mbps of the named network device.
|
||||
|
||||
If set to 0 (default), the LED's normal state is off.
|
||||
|
||||
If set to 1, the LED's normal state reflects the link state
|
||||
speed of 100Mbps of the named network device.
|
||||
Setting this value also immediately changes the LED state.
|
||||
|
||||
What: /sys/class/leds/<led>/link_1000
|
||||
Date: Jun 2023
|
||||
KernelVersion: 6.5
|
||||
Contact: linux-leds@vger.kernel.org
|
||||
Description:
|
||||
Signal the link speed state of 1000Mbps of the named network device.
|
||||
|
||||
If set to 0 (default), the LED's normal state is off.
|
||||
|
||||
If set to 1, the LED's normal state reflects the link state
|
||||
speed of 1000Mbps of the named network device.
|
||||
Setting this value also immediately changes the LED state.
|
||||
|
||||
What: /sys/class/leds/<led>/half_duplex
|
||||
Date: Jun 2023
|
||||
KernelVersion: 6.5
|
||||
Contact: linux-leds@vger.kernel.org
|
||||
Description:
|
||||
Signal the link half duplex state of the named network device.
|
||||
|
||||
If set to 0 (default), the LED's normal state is off.
|
||||
|
||||
If set to 1, the LED's normal state reflects the link half
|
||||
duplex state of the named network device.
|
||||
Setting this value also immediately changes the LED state.
|
||||
|
||||
What: /sys/class/leds/<led>/full_duplex
|
||||
Date: Jun 2023
|
||||
KernelVersion: 6.5
|
||||
Contact: linux-leds@vger.kernel.org
|
||||
Description:
|
||||
Signal the link full duplex state of the named network device.
|
||||
|
||||
If set to 0 (default), the LED's normal state is off.
|
||||
|
||||
If set to 1, the LED's normal state reflects the link full
|
||||
duplex state of the named network device.
|
||||
Setting this value also immediately changes the LED state.
|
||||
|
|
|
|||
|
|
@ -62,7 +62,7 @@ Description:
|
|||
What: /sys/class/net/<iface>/qmi/pass_through
|
||||
Date: January 2021
|
||||
KernelVersion: 5.12
|
||||
Contact: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
|
||||
Contact: Subash Abhinov Kasiviswanathan <quic_subashab@quicinc.com>
|
||||
Description:
|
||||
Boolean. Default: 'N'
|
||||
|
||||
|
|
|
|||
|
|
@ -59,3 +59,55 @@ Description: (RW) Control the allocated buffer watermark of outbound packets.
|
|||
The available tune data is [0, 1, 2]. Writing a negative value
|
||||
will return an error, and out of range values will be converted
|
||||
to 2. The value indicates a probable level of the event.
|
||||
|
||||
What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/root_port_filters
|
||||
Date: May 2023
|
||||
KernelVersion: 6.5
|
||||
Contact: Yicong Yang <yangyicong@hisilicon.com>
|
||||
Description: This directory contains the files providing the PCIe Root Port filters
|
||||
information used for PTT trace. Each file is named after the supported
|
||||
Root Port device name <domain>:<bus>:<device>.<function>.
|
||||
|
||||
See the description of the "filter" in Documentation/trace/hisi-ptt.rst
|
||||
for more information.
|
||||
|
||||
What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/root_port_filters/multiselect
|
||||
Date: May 2023
|
||||
KernelVersion: 6.5
|
||||
Contact: Yicong Yang <yangyicong@hisilicon.com>
|
||||
Description: (Read) Indicates if this kind of filter can be selected at the same
|
||||
time as others filters, or must be used on it's own. 1 indicates
|
||||
the former case and 0 indicates the latter.
|
||||
|
||||
What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/root_port_filters/<bdf>
|
||||
Date: May 2023
|
||||
KernelVersion: 6.5
|
||||
Contact: Yicong Yang <yangyicong@hisilicon.com>
|
||||
Description: (Read) Indicates the filter value of this Root Port filter, which
|
||||
can be used to control the TLP headers to trace by the PTT trace.
|
||||
|
||||
What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/requester_filters
|
||||
Date: May 2023
|
||||
KernelVersion: 6.5
|
||||
Contact: Yicong Yang <yangyicong@hisilicon.com>
|
||||
Description: This directory contains the files providing the PCIe Requester filters
|
||||
information used for PTT trace. Each file is named after the supported
|
||||
Endpoint device name <domain>:<bus>:<device>.<function>.
|
||||
|
||||
See the description of the "filter" in Documentation/trace/hisi-ptt.rst
|
||||
for more information.
|
||||
|
||||
What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/requester_filters/multiselect
|
||||
Date: May 2023
|
||||
KernelVersion: 6.5
|
||||
Contact: Yicong Yang <yangyicong@hisilicon.com>
|
||||
Description: (Read) Indicates if this kind of filter can be selected at the same
|
||||
time as others filters, or must be used on it's own. 1 indicates
|
||||
the former case and 0 indicates the latter.
|
||||
|
||||
What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/requester_filters/<bdf>
|
||||
Date: May 2023
|
||||
KernelVersion: 6.5
|
||||
Contact: Yicong Yang <yangyicong@hisilicon.com>
|
||||
Description: (Read) Indicates the filter value of this Requester filter, which
|
||||
can be used to control the TLP headers to trace by the PTT trace.
|
||||
|
|
|
|||
|
|
@ -670,7 +670,7 @@ Description: Preferred MTE tag checking mode
|
|||
"async" Prefer asynchronous mode
|
||||
================ ==============================================
|
||||
|
||||
See also: Documentation/arm64/memory-tagging-extension.rst
|
||||
See also: Documentation/arch/arm64/memory-tagging-extension.rst
|
||||
|
||||
What: /sys/devices/system/cpu/nohz_full
|
||||
Date: Apr 2015
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
What: /sys/bus/platform/drivers/eud/.../enable
|
||||
What: /sys/bus/platform/drivers/qcom_eud/.../enable
|
||||
Date: February 2022
|
||||
Contact: Souradeep Chowdhury <quic_schowdhu@quicinc.com>
|
||||
Description:
|
||||
|
|
|
|||
|
|
@ -27,7 +27,18 @@ Description: (RW) Reports the current configuration of the QAT device.
|
|||
|
||||
* sym;asym: the device is configured for running crypto
|
||||
services
|
||||
* asym;sym: identical to sym;asym
|
||||
* dc: the device is configured for running compression services
|
||||
* sym: the device is configured for running symmetric crypto
|
||||
services
|
||||
* asym: the device is configured for running asymmetric crypto
|
||||
services
|
||||
* asym;dc: the device is configured for running asymmetric
|
||||
crypto services and compression services
|
||||
* dc;asym: identical to asym;dc
|
||||
* sym;dc: the device is configured for running symmetric crypto
|
||||
services and compression services
|
||||
* dc;sym: identical to sym;dc
|
||||
|
||||
It is possible to set the configuration only if the device
|
||||
is in the `down` state (see /sys/bus/pci/devices/<BDF>/qat/state)
|
||||
|
|
@ -47,3 +58,38 @@ Description: (RW) Reports the current configuration of the QAT device.
|
|||
dc
|
||||
|
||||
This attribute is only available for qat_4xxx devices.
|
||||
|
||||
What: /sys/bus/pci/devices/<BDF>/qat/pm_idle_enabled
|
||||
Date: June 2023
|
||||
KernelVersion: 6.5
|
||||
Contact: qat-linux@intel.com
|
||||
Description: (RW) This configuration option provides a way to force the device into remaining in
|
||||
the MAX power state.
|
||||
If idle support is enabled the device will transition to the `MIN` power state when
|
||||
idle, otherwise will stay in the MAX power state.
|
||||
Write to the file to enable or disable idle support.
|
||||
|
||||
The values are:
|
||||
|
||||
* 0: idle support is disabled
|
||||
* 1: idle support is enabled
|
||||
|
||||
Default value is 1.
|
||||
|
||||
It is possible to set the pm_idle_enabled value only if the device
|
||||
is in the `down` state (see /sys/bus/pci/devices/<BDF>/qat/state)
|
||||
|
||||
The following example shows how to change the pm_idle_enabled of
|
||||
a device::
|
||||
|
||||
# cat /sys/bus/pci/devices/<BDF>/qat/state
|
||||
up
|
||||
# cat /sys/bus/pci/devices/<BDF>/qat/pm_idle_enabled
|
||||
1
|
||||
# echo down > /sys/bus/pci/devices/<BDF>/qat/state
|
||||
# echo 0 > /sys/bus/pci/devices/<BDF>/qat/pm_idle_enabled
|
||||
# echo up > /sys/bus/pci/devices/<BDF>/qat/state
|
||||
# cat /sys/bus/pci/devices/<BDF>/qat/pm_idle_enabled
|
||||
0
|
||||
|
||||
This attribute is only available for qat_4xxx devices.
|
||||
|
|
|
|||
|
|
@ -994,7 +994,7 @@ Description: This file shows the amount of physical memory needed
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/rpm_lvl
|
||||
What: /sys/bus/platform/devices/*.ufs/rpm_lvl
|
||||
Date: September 2014
|
||||
Contact: Subhash Jadavani <subhashj@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This entry could be used to set or show the UFS device
|
||||
runtime power management level. The current driver
|
||||
implementation supports 7 levels with next target states:
|
||||
|
|
@ -1021,7 +1021,7 @@ Description: This entry could be used to set or show the UFS device
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/rpm_target_dev_state
|
||||
What: /sys/bus/platform/devices/*.ufs/rpm_target_dev_state
|
||||
Date: February 2018
|
||||
Contact: Subhash Jadavani <subhashj@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This entry shows the target power mode of an UFS device
|
||||
for the chosen runtime power management level.
|
||||
|
||||
|
|
@ -1030,7 +1030,7 @@ Description: This entry shows the target power mode of an UFS device
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/rpm_target_link_state
|
||||
What: /sys/bus/platform/devices/*.ufs/rpm_target_link_state
|
||||
Date: February 2018
|
||||
Contact: Subhash Jadavani <subhashj@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This entry shows the target state of an UFS UIC link
|
||||
for the chosen runtime power management level.
|
||||
|
||||
|
|
@ -1039,7 +1039,7 @@ Description: This entry shows the target state of an UFS UIC link
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/spm_lvl
|
||||
What: /sys/bus/platform/devices/*.ufs/spm_lvl
|
||||
Date: September 2014
|
||||
Contact: Subhash Jadavani <subhashj@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This entry could be used to set or show the UFS device
|
||||
system power management level. The current driver
|
||||
implementation supports 7 levels with next target states:
|
||||
|
|
@ -1066,7 +1066,7 @@ Description: This entry could be used to set or show the UFS device
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/spm_target_dev_state
|
||||
What: /sys/bus/platform/devices/*.ufs/spm_target_dev_state
|
||||
Date: February 2018
|
||||
Contact: Subhash Jadavani <subhashj@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This entry shows the target power mode of an UFS device
|
||||
for the chosen system power management level.
|
||||
|
||||
|
|
@ -1075,7 +1075,7 @@ Description: This entry shows the target power mode of an UFS device
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/spm_target_link_state
|
||||
What: /sys/bus/platform/devices/*.ufs/spm_target_link_state
|
||||
Date: February 2018
|
||||
Contact: Subhash Jadavani <subhashj@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This entry shows the target state of an UFS UIC link
|
||||
for the chosen system power management level.
|
||||
|
||||
|
|
@ -1084,7 +1084,7 @@ Description: This entry shows the target state of an UFS UIC link
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/monitor/monitor_enable
|
||||
What: /sys/bus/platform/devices/*.ufs/monitor/monitor_enable
|
||||
Date: January 2021
|
||||
Contact: Can Guo <cang@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This file shows the status of performance monitor enablement
|
||||
and it can be used to start/stop the monitor. When the monitor
|
||||
is stopped, the performance data collected is also cleared.
|
||||
|
|
@ -1092,7 +1092,7 @@ Description: This file shows the status of performance monitor enablement
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/monitor/monitor_chunk_size
|
||||
What: /sys/bus/platform/devices/*.ufs/monitor/monitor_chunk_size
|
||||
Date: January 2021
|
||||
Contact: Can Guo <cang@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This file tells the monitor to focus on requests transferring
|
||||
data of specific chunk size (in Bytes). 0 means any chunk size.
|
||||
It can only be changed when monitor is disabled.
|
||||
|
|
@ -1100,7 +1100,7 @@ Description: This file tells the monitor to focus on requests transferring
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_total_sectors
|
||||
What: /sys/bus/platform/devices/*.ufs/monitor/read_total_sectors
|
||||
Date: January 2021
|
||||
Contact: Can Guo <cang@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This file shows how many sectors (in 512 Bytes) have been
|
||||
sent from device to host after monitor gets started.
|
||||
|
||||
|
|
@ -1109,7 +1109,7 @@ Description: This file shows how many sectors (in 512 Bytes) have been
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_total_busy
|
||||
What: /sys/bus/platform/devices/*.ufs/monitor/read_total_busy
|
||||
Date: January 2021
|
||||
Contact: Can Guo <cang@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This file shows how long (in micro seconds) has been spent
|
||||
sending data from device to host after monitor gets started.
|
||||
|
||||
|
|
@ -1118,7 +1118,7 @@ Description: This file shows how long (in micro seconds) has been spent
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_nr_requests
|
||||
What: /sys/bus/platform/devices/*.ufs/monitor/read_nr_requests
|
||||
Date: January 2021
|
||||
Contact: Can Guo <cang@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This file shows how many read requests have been sent after
|
||||
monitor gets started.
|
||||
|
||||
|
|
@ -1127,7 +1127,7 @@ Description: This file shows how many read requests have been sent after
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_max
|
||||
What: /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_max
|
||||
Date: January 2021
|
||||
Contact: Can Guo <cang@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This file shows the maximum latency (in micro seconds) of
|
||||
read requests after monitor gets started.
|
||||
|
||||
|
|
@ -1136,7 +1136,7 @@ Description: This file shows the maximum latency (in micro seconds) of
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_min
|
||||
What: /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_min
|
||||
Date: January 2021
|
||||
Contact: Can Guo <cang@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This file shows the minimum latency (in micro seconds) of
|
||||
read requests after monitor gets started.
|
||||
|
||||
|
|
@ -1145,7 +1145,7 @@ Description: This file shows the minimum latency (in micro seconds) of
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_avg
|
||||
What: /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_avg
|
||||
Date: January 2021
|
||||
Contact: Can Guo <cang@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This file shows the average latency (in micro seconds) of
|
||||
read requests after monitor gets started.
|
||||
|
||||
|
|
@ -1154,7 +1154,7 @@ Description: This file shows the average latency (in micro seconds) of
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_sum
|
||||
What: /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_sum
|
||||
Date: January 2021
|
||||
Contact: Can Guo <cang@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This file shows the total latency (in micro seconds) of
|
||||
read requests sent after monitor gets started.
|
||||
|
||||
|
|
@ -1163,7 +1163,7 @@ Description: This file shows the total latency (in micro seconds) of
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_total_sectors
|
||||
What: /sys/bus/platform/devices/*.ufs/monitor/write_total_sectors
|
||||
Date: January 2021
|
||||
Contact: Can Guo <cang@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This file shows how many sectors (in 512 Bytes) have been sent
|
||||
from host to device after monitor gets started.
|
||||
|
||||
|
|
@ -1172,7 +1172,7 @@ Description: This file shows how many sectors (in 512 Bytes) have been sent
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_total_busy
|
||||
What: /sys/bus/platform/devices/*.ufs/monitor/write_total_busy
|
||||
Date: January 2021
|
||||
Contact: Can Guo <cang@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This file shows how long (in micro seconds) has been spent
|
||||
sending data from host to device after monitor gets started.
|
||||
|
||||
|
|
@ -1181,7 +1181,7 @@ Description: This file shows how long (in micro seconds) has been spent
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_nr_requests
|
||||
What: /sys/bus/platform/devices/*.ufs/monitor/write_nr_requests
|
||||
Date: January 2021
|
||||
Contact: Can Guo <cang@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This file shows how many write requests have been sent after
|
||||
monitor gets started.
|
||||
|
||||
|
|
@ -1190,7 +1190,7 @@ Description: This file shows how many write requests have been sent after
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_max
|
||||
What: /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_max
|
||||
Date: January 2021
|
||||
Contact: Can Guo <cang@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This file shows the maximum latency (in micro seconds) of write
|
||||
requests after monitor gets started.
|
||||
|
||||
|
|
@ -1199,7 +1199,7 @@ Description: This file shows the maximum latency (in micro seconds) of write
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_min
|
||||
What: /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_min
|
||||
Date: January 2021
|
||||
Contact: Can Guo <cang@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This file shows the minimum latency (in micro seconds) of write
|
||||
requests after monitor gets started.
|
||||
|
||||
|
|
@ -1208,7 +1208,7 @@ Description: This file shows the minimum latency (in micro seconds) of write
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_avg
|
||||
What: /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_avg
|
||||
Date: January 2021
|
||||
Contact: Can Guo <cang@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This file shows the average latency (in micro seconds) of write
|
||||
requests after monitor gets started.
|
||||
|
||||
|
|
@ -1217,7 +1217,7 @@ Description: This file shows the average latency (in micro seconds) of write
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_sum
|
||||
What: /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_sum
|
||||
Date: January 2021
|
||||
Contact: Can Guo <cang@codeaurora.org>
|
||||
Contact: Can Guo <quic_cang@quicinc.com>
|
||||
Description: This file shows the total latency (in micro seconds) of write
|
||||
requests after monitor gets started.
|
||||
|
||||
|
|
@ -1226,7 +1226,7 @@ Description: This file shows the total latency (in micro seconds) of write
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/wb_presv_us_en
|
||||
What: /sys/bus/platform/devices/*.ufs/device_descriptor/wb_presv_us_en
|
||||
Date: June 2020
|
||||
Contact: Asutosh Das <asutoshd@codeaurora.org>
|
||||
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
|
||||
Description: This entry shows if preserve user-space was configured
|
||||
|
||||
The file is read only.
|
||||
|
|
@ -1234,7 +1234,7 @@ Description: This entry shows if preserve user-space was configured
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/wb_shared_alloc_units
|
||||
What: /sys/bus/platform/devices/*.ufs/device_descriptor/wb_shared_alloc_units
|
||||
Date: June 2020
|
||||
Contact: Asutosh Das <asutoshd@codeaurora.org>
|
||||
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
|
||||
Description: This entry shows the shared allocated units of WB buffer
|
||||
|
||||
The file is read only.
|
||||
|
|
@ -1242,7 +1242,7 @@ Description: This entry shows the shared allocated units of WB buffer
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/wb_type
|
||||
What: /sys/bus/platform/devices/*.ufs/device_descriptor/wb_type
|
||||
Date: June 2020
|
||||
Contact: Asutosh Das <asutoshd@codeaurora.org>
|
||||
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
|
||||
Description: This entry shows the configured WB type.
|
||||
0x1 for shared buffer mode. 0x0 for dedicated buffer mode.
|
||||
|
||||
|
|
@ -1251,7 +1251,7 @@ Description: This entry shows the configured WB type.
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_buff_cap_adj
|
||||
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_buff_cap_adj
|
||||
Date: June 2020
|
||||
Contact: Asutosh Das <asutoshd@codeaurora.org>
|
||||
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
|
||||
Description: This entry shows the total user-space decrease in shared
|
||||
buffer mode.
|
||||
The value of this parameter is 3 for TLC NAND when SLC mode
|
||||
|
|
@ -1262,7 +1262,7 @@ Description: This entry shows the total user-space decrease in shared
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_max_alloc_units
|
||||
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_max_alloc_units
|
||||
Date: June 2020
|
||||
Contact: Asutosh Das <asutoshd@codeaurora.org>
|
||||
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
|
||||
Description: This entry shows the Maximum total WriteBooster Buffer size
|
||||
which is supported by the entire device.
|
||||
|
||||
|
|
@ -1271,7 +1271,7 @@ Description: This entry shows the Maximum total WriteBooster Buffer size
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_max_wb_luns
|
||||
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_max_wb_luns
|
||||
Date: June 2020
|
||||
Contact: Asutosh Das <asutoshd@codeaurora.org>
|
||||
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
|
||||
Description: This entry shows the maximum number of luns that can support
|
||||
WriteBooster.
|
||||
|
||||
|
|
@ -1280,7 +1280,7 @@ Description: This entry shows the maximum number of luns that can support
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_sup_red_type
|
||||
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_sup_red_type
|
||||
Date: June 2020
|
||||
Contact: Asutosh Das <asutoshd@codeaurora.org>
|
||||
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
|
||||
Description: The supportability of user space reduction mode
|
||||
and preserve user space mode.
|
||||
00h: WriteBooster Buffer can be configured only in
|
||||
|
|
@ -1295,7 +1295,7 @@ Description: The supportability of user space reduction mode
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_sup_wb_type
|
||||
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_sup_wb_type
|
||||
Date: June 2020
|
||||
Contact: Asutosh Das <asutoshd@codeaurora.org>
|
||||
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
|
||||
Description: The supportability of WriteBooster Buffer type.
|
||||
|
||||
=== ==========================================================
|
||||
|
|
@ -1310,7 +1310,7 @@ Description: The supportability of WriteBooster Buffer type.
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/flags/wb_enable
|
||||
What: /sys/bus/platform/devices/*.ufs/flags/wb_enable
|
||||
Date: June 2020
|
||||
Contact: Asutosh Das <asutoshd@codeaurora.org>
|
||||
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
|
||||
Description: This entry shows the status of WriteBooster.
|
||||
|
||||
== ============================
|
||||
|
|
@ -1323,7 +1323,7 @@ Description: This entry shows the status of WriteBooster.
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/flags/wb_flush_en
|
||||
What: /sys/bus/platform/devices/*.ufs/flags/wb_flush_en
|
||||
Date: June 2020
|
||||
Contact: Asutosh Das <asutoshd@codeaurora.org>
|
||||
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
|
||||
Description: This entry shows if flush is enabled.
|
||||
|
||||
== =================================
|
||||
|
|
@ -1336,7 +1336,7 @@ Description: This entry shows if flush is enabled.
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/flags/wb_flush_during_h8
|
||||
What: /sys/bus/platform/devices/*.ufs/flags/wb_flush_during_h8
|
||||
Date: June 2020
|
||||
Contact: Asutosh Das <asutoshd@codeaurora.org>
|
||||
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
|
||||
Description: Flush WriteBooster Buffer during hibernate state.
|
||||
|
||||
== =================================================
|
||||
|
|
@ -1351,7 +1351,7 @@ Description: Flush WriteBooster Buffer during hibernate state.
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_avail_buf
|
||||
What: /sys/bus/platform/devices/*.ufs/attributes/wb_avail_buf
|
||||
Date: June 2020
|
||||
Contact: Asutosh Das <asutoshd@codeaurora.org>
|
||||
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
|
||||
Description: This entry shows the amount of unused WriteBooster buffer
|
||||
available.
|
||||
|
||||
|
|
@ -1360,7 +1360,7 @@ Description: This entry shows the amount of unused WriteBooster buffer
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_cur_buf
|
||||
What: /sys/bus/platform/devices/*.ufs/attributes/wb_cur_buf
|
||||
Date: June 2020
|
||||
Contact: Asutosh Das <asutoshd@codeaurora.org>
|
||||
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
|
||||
Description: This entry shows the amount of unused current buffer.
|
||||
|
||||
The file is read only.
|
||||
|
|
@ -1368,7 +1368,7 @@ Description: This entry shows the amount of unused current buffer.
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_flush_status
|
||||
What: /sys/bus/platform/devices/*.ufs/attributes/wb_flush_status
|
||||
Date: June 2020
|
||||
Contact: Asutosh Das <asutoshd@codeaurora.org>
|
||||
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
|
||||
Description: This entry shows the flush operation status.
|
||||
|
||||
|
||||
|
|
@ -1385,7 +1385,7 @@ Description: This entry shows the flush operation status.
|
|||
What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_life_time_est
|
||||
What: /sys/bus/platform/devices/*.ufs/attributes/wb_life_time_est
|
||||
Date: June 2020
|
||||
Contact: Asutosh Das <asutoshd@codeaurora.org>
|
||||
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
|
||||
Description: This entry shows an indication of the WriteBooster Buffer
|
||||
lifetime based on the amount of performed program/erase cycles
|
||||
|
||||
|
|
@ -1399,7 +1399,7 @@ Description: This entry shows an indication of the WriteBooster Buffer
|
|||
|
||||
What: /sys/class/scsi_device/*/device/unit_descriptor/wb_buf_alloc_units
|
||||
Date: June 2020
|
||||
Contact: Asutosh Das <asutoshd@codeaurora.org>
|
||||
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
|
||||
Description: This entry shows the configured size of WriteBooster buffer.
|
||||
0400h corresponds to 4GB.
|
||||
|
||||
|
|
@ -1426,6 +1426,17 @@ Description: This entry shows the status of WriteBooster buffer flushing
|
|||
If flushing is enabled, the device executes the flush
|
||||
operation when the command queue is empty.
|
||||
|
||||
What: /sys/bus/platform/drivers/ufshcd/*/wb_flush_threshold
|
||||
What: /sys/bus/platform/devices/*.ufs/wb_flush_threshold
|
||||
Date: June 2023
|
||||
Contact: Lu Hongfei <luhongfei@vivo.com>
|
||||
Description:
|
||||
wb_flush_threshold represents the threshold for flushing WriteBooster buffer,
|
||||
whose value expressed in unit of 10% granularity, such as '1' representing 10%,
|
||||
'2' representing 20%, and so on.
|
||||
If avail_wb_buff < wb_flush_threshold, it indicates that WriteBooster buffer needs to
|
||||
be flushed, otherwise it is not necessary.
|
||||
|
||||
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/hpb_version
|
||||
What: /sys/bus/platform/devices/*.ufs/device_descriptor/hpb_version
|
||||
Date: June 2021
|
||||
|
|
|
|||
|
|
@ -1,13 +1,13 @@
|
|||
What: /sys/fs/ocfs2/
|
||||
Date: April 2008
|
||||
Contact: ocfs2-devel@oss.oracle.com
|
||||
Contact: ocfs2-devel@lists.linux.dev
|
||||
Description:
|
||||
The /sys/fs/ocfs2 directory contains knobs used by the
|
||||
ocfs2-tools to interact with the filesystem.
|
||||
|
||||
What: /sys/fs/ocfs2/max_locking_protocol
|
||||
Date: April 2008
|
||||
Contact: ocfs2-devel@oss.oracle.com
|
||||
Contact: ocfs2-devel@lists.linux.dev
|
||||
Description:
|
||||
The /sys/fs/ocfs2/max_locking_protocol file displays version
|
||||
of ocfs2 locking supported by the filesystem. This version
|
||||
|
|
@ -28,7 +28,7 @@ Description:
|
|||
|
||||
What: /sys/fs/ocfs2/loaded_cluster_plugins
|
||||
Date: April 2008
|
||||
Contact: ocfs2-devel@oss.oracle.com
|
||||
Contact: ocfs2-devel@lists.linux.dev
|
||||
Description:
|
||||
The /sys/fs/ocfs2/loaded_cluster_plugins file describes
|
||||
the available plugins to support ocfs2 cluster operation.
|
||||
|
|
@ -48,7 +48,7 @@ Description:
|
|||
|
||||
What: /sys/fs/ocfs2/active_cluster_plugin
|
||||
Date: April 2008
|
||||
Contact: ocfs2-devel@oss.oracle.com
|
||||
Contact: ocfs2-devel@lists.linux.dev
|
||||
Description:
|
||||
The /sys/fs/ocfs2/active_cluster_plugin displays which
|
||||
cluster plugin is currently in use by the filesystem.
|
||||
|
|
@ -65,7 +65,7 @@ Description:
|
|||
|
||||
What: /sys/fs/ocfs2/cluster_stack
|
||||
Date: April 2008
|
||||
Contact: ocfs2-devel@oss.oracle.com
|
||||
Contact: ocfs2-devel@lists.linux.dev
|
||||
Description:
|
||||
The /sys/fs/ocfs2/cluster_stack file contains the name
|
||||
of current ocfs2 cluster stack. This value is set by
|
||||
|
|
@ -86,4 +86,4 @@ Description:
|
|||
stack return an error.
|
||||
|
||||
Users:
|
||||
ocfs2-tools <ocfs2-tools-devel@oss.oracle.com>
|
||||
ocfs2-tools <ocfs2-tools-devel@lists.linux.dev>
|
||||
|
|
|
|||
|
|
@ -3,5 +3,7 @@ Date: September 2022
|
|||
KernelVersion: 6.1
|
||||
Contact: Armin Wolf <W_Armin@gmx.de>
|
||||
Description:
|
||||
Reports the Dell ePPID (electronic Dell Piece Part Identification)
|
||||
Reports the Dell ePPID (electronic Piece Part Identification)
|
||||
of the ACPI battery.
|
||||
|
||||
See Documentation/wmi/devices/dell-wmi-ddv.rst for details.
|
||||
|
|
|
|||
|
|
@ -75,3 +75,12 @@ KernelVersion: 6.4
|
|||
Contact: "Liming Sun <limings@nvidia.com>"
|
||||
Description:
|
||||
The file used to access the BlueField boot fifo.
|
||||
|
||||
What: /sys/bus/platform/devices/MLNXBF04:00/rsh_log
|
||||
Date: May 2023
|
||||
KernelVersion: 6.4
|
||||
Contact: "Liming Sun <limings@nvidia.com>"
|
||||
Description:
|
||||
The file used to write BlueField boot log with the format
|
||||
"[INFO|WARN|ERR|ASSERT ]<msg>". Log level 'INFO' is used by
|
||||
default if not specified.
|
||||
|
|
|
|||
|
|
@ -88,13 +88,10 @@ commands can be used::
|
|||
# echo 0x104c > functions/pci_epf_ntb/func1/vendorid
|
||||
# echo 0xb00d > functions/pci_epf_ntb/func1/deviceid
|
||||
|
||||
In order to configure NTB specific attributes, a new sub-directory to func1
|
||||
should be created::
|
||||
|
||||
# mkdir functions/pci_epf_ntb/func1/pci_epf_ntb.0/
|
||||
|
||||
The NTB function driver will populate this directory with various attributes
|
||||
that can be configured by the user::
|
||||
The PCI endpoint framework also automatically creates a sub-directory in the
|
||||
function attribute directory. This sub-directory has the same name as the name
|
||||
of the function device and is populated with the following NTB specific
|
||||
attributes that can be configured by the user::
|
||||
|
||||
# ls functions/pci_epf_ntb/func1/pci_epf_ntb.0/
|
||||
db_count mw1 mw2 mw3 mw4 num_mws
|
||||
|
|
|
|||
|
|
@ -84,13 +84,10 @@ commands can be used::
|
|||
# echo 0x1957 > functions/pci_epf_vntb/func1/vendorid
|
||||
# echo 0x0809 > functions/pci_epf_vntb/func1/deviceid
|
||||
|
||||
In order to configure NTB specific attributes, a new sub-directory to func1
|
||||
should be created::
|
||||
|
||||
# mkdir functions/pci_epf_vntb/func1/pci_epf_vntb.0/
|
||||
|
||||
The NTB function driver will populate this directory with various attributes
|
||||
that can be configured by the user::
|
||||
The PCI endpoint framework also automatically creates a sub-directory in the
|
||||
function attribute directory. This sub-directory has the same name as the name
|
||||
of the function device and is populated with the following NTB specific
|
||||
attributes that can be configured by the user::
|
||||
|
||||
# ls functions/pci_epf_vntb/func1/pci_epf_vntb.0/
|
||||
db_count mw1 mw2 mw3 mw4 num_mws
|
||||
|
|
@ -103,7 +100,7 @@ A sample configuration for NTB function is given below::
|
|||
# echo 1 > functions/pci_epf_vntb/func1/pci_epf_vntb.0/num_mws
|
||||
# echo 0x100000 > functions/pci_epf_vntb/func1/pci_epf_vntb.0/mw1
|
||||
|
||||
A sample configuration for virtual NTB driver for virutal PCI bus::
|
||||
A sample configuration for virtual NTB driver for virtual PCI bus::
|
||||
|
||||
# echo 0x1957 > functions/pci_epf_vntb/func1/pci_epf_vntb.0/vntb_vid
|
||||
# echo 0x080A > functions/pci_epf_vntb/func1/pci_epf_vntb.0/vntb_pid
|
||||
|
|
|
|||
|
|
@ -290,7 +290,7 @@ PCI_IRQ_MSI or PCI_IRQ_MSIX flags.
|
|||
List of device drivers MSI(-X) APIs
|
||||
===================================
|
||||
|
||||
The PCI/MSI subystem has a dedicated C file for its exported device driver
|
||||
The PCI/MSI subsystem has a dedicated C file for its exported device driver
|
||||
APIs — `drivers/pci/msi/api.c`. The following functions are exported:
|
||||
|
||||
.. kernel-doc:: drivers/pci/msi/api.c
|
||||
|
|
|
|||
|
|
@ -364,7 +364,7 @@ Note, however, not all failures are truly "permanent". Some are
|
|||
caused by over-heating, some by a poorly seated card. Many
|
||||
PCI error events are caused by software bugs, e.g. DMA's to
|
||||
wild addresses or bogus split transactions due to programming
|
||||
errors. See the discussion in powerpc/eeh-pci-error-recovery.txt
|
||||
errors. See the discussion in Documentation/powerpc/eeh-pci-error-recovery.rst
|
||||
for additional detail on real-life experience of the causes of
|
||||
software errors.
|
||||
|
||||
|
|
|
|||
|
|
@ -16,62 +16,61 @@ Overview
|
|||
About this guide
|
||||
----------------
|
||||
|
||||
This guide describes the basics of the PCI Express Advanced Error
|
||||
This guide describes the basics of the PCI Express (PCIe) Advanced Error
|
||||
Reporting (AER) driver and provides information on how to use it, as
|
||||
well as how to enable the drivers of endpoint devices to conform with
|
||||
PCI Express AER driver.
|
||||
well as how to enable the drivers of Endpoint devices to conform with
|
||||
the PCIe AER driver.
|
||||
|
||||
|
||||
What is the PCI Express AER Driver?
|
||||
-----------------------------------
|
||||
What is the PCIe AER Driver?
|
||||
----------------------------
|
||||
|
||||
PCI Express error signaling can occur on the PCI Express link itself
|
||||
or on behalf of transactions initiated on the link. PCI Express
|
||||
PCIe error signaling can occur on the PCIe link itself
|
||||
or on behalf of transactions initiated on the link. PCIe
|
||||
defines two error reporting paradigms: the baseline capability and
|
||||
the Advanced Error Reporting capability. The baseline capability is
|
||||
required of all PCI Express components providing a minimum defined
|
||||
required of all PCIe components providing a minimum defined
|
||||
set of error reporting requirements. Advanced Error Reporting
|
||||
capability is implemented with a PCI Express advanced error reporting
|
||||
capability is implemented with a PCIe Advanced Error Reporting
|
||||
extended capability structure providing more robust error reporting.
|
||||
|
||||
The PCI Express AER driver provides the infrastructure to support PCI
|
||||
Express Advanced Error Reporting capability. The PCI Express AER
|
||||
driver provides three basic functions:
|
||||
The PCIe AER driver provides the infrastructure to support PCIe Advanced
|
||||
Error Reporting capability. The PCIe AER driver provides three basic
|
||||
functions:
|
||||
|
||||
- Gathers the comprehensive error information if errors occurred.
|
||||
- Reports error to the users.
|
||||
- Performs error recovery actions.
|
||||
|
||||
AER driver only attaches root ports which support PCI-Express AER
|
||||
capability.
|
||||
The AER driver only attaches to Root Ports and RCECs that support the PCIe
|
||||
AER capability.
|
||||
|
||||
|
||||
User Guide
|
||||
==========
|
||||
|
||||
Include the PCI Express AER Root Driver into the Linux Kernel
|
||||
-------------------------------------------------------------
|
||||
Include the PCIe AER Root Driver into the Linux Kernel
|
||||
------------------------------------------------------
|
||||
|
||||
The PCI Express AER Root driver is a Root Port service driver attached
|
||||
to the PCI Express Port Bus driver. If a user wants to use it, the driver
|
||||
has to be compiled. Option CONFIG_PCIEAER supports this capability. It
|
||||
depends on CONFIG_PCIEPORTBUS, so pls. set CONFIG_PCIEPORTBUS=y and
|
||||
CONFIG_PCIEAER = y.
|
||||
The PCIe AER driver is a Root Port service driver attached
|
||||
via the PCIe Port Bus driver. If a user wants to use it, the driver
|
||||
must be compiled. It is enabled with CONFIG_PCIEAER, which
|
||||
depends on CONFIG_PCIEPORTBUS.
|
||||
|
||||
Load PCI Express AER Root Driver
|
||||
--------------------------------
|
||||
Load PCIe AER Root Driver
|
||||
-------------------------
|
||||
|
||||
Some systems have AER support in firmware. Enabling Linux AER support at
|
||||
the same time the firmware handles AER may result in unpredictable
|
||||
the same time the firmware handles AER would result in unpredictable
|
||||
behavior. Therefore, Linux does not handle AER events unless the firmware
|
||||
grants AER control to the OS via the ACPI _OSC method. See the PCI FW 3.0
|
||||
grants AER control to the OS via the ACPI _OSC method. See the PCI Firmware
|
||||
Specification for details regarding _OSC usage.
|
||||
|
||||
AER error output
|
||||
----------------
|
||||
|
||||
When a PCIe AER error is captured, an error message will be output to
|
||||
console. If it's a correctable error, it is output as a warning.
|
||||
console. If it's a correctable error, it is output as an info message.
|
||||
Otherwise, it is printed as an error. So users could choose different
|
||||
log level to filter out correctable error messages.
|
||||
|
||||
|
|
@ -82,9 +81,9 @@ Below shows an example::
|
|||
0000:50:00.0: [20] Unsupported Request (First)
|
||||
0000:50:00.0: TLP Header: 04000001 00200a03 05010000 00050100
|
||||
|
||||
In the example, 'Requester ID' means the ID of the device who sends
|
||||
the error message to root port. Pls. refer to pci express specs for
|
||||
other fields.
|
||||
In the example, 'Requester ID' means the ID of the device that sent
|
||||
the error message to the Root Port. Please refer to PCIe specs for other
|
||||
fields.
|
||||
|
||||
AER Statistics / Counters
|
||||
-------------------------
|
||||
|
|
@ -96,65 +95,56 @@ Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats
|
|||
Developer Guide
|
||||
===============
|
||||
|
||||
To enable AER aware support requires a software driver to configure
|
||||
the AER capability structure within its device and to provide callbacks.
|
||||
To enable error recovery, a software driver must provide callbacks.
|
||||
|
||||
To support AER better, developers need understand how AER does work
|
||||
firstly.
|
||||
To support AER better, developers need to understand how AER works.
|
||||
|
||||
PCI Express errors are classified into two types: correctable errors
|
||||
and uncorrectable errors. This classification is based on the impacts
|
||||
PCIe errors are classified into two types: correctable errors
|
||||
and uncorrectable errors. This classification is based on the impact
|
||||
of those errors, which may result in degraded performance or function
|
||||
failure.
|
||||
|
||||
Correctable errors pose no impacts on the functionality of the
|
||||
interface. The PCI Express protocol can recover without any software
|
||||
interface. The PCIe protocol can recover without any software
|
||||
intervention or any loss of data. These errors are detected and
|
||||
corrected by hardware. Unlike correctable errors, uncorrectable
|
||||
corrected by hardware.
|
||||
|
||||
Unlike correctable errors, uncorrectable
|
||||
errors impact functionality of the interface. Uncorrectable errors
|
||||
can cause a particular transaction or a particular PCI Express link
|
||||
can cause a particular transaction or a particular PCIe link
|
||||
to be unreliable. Depending on those error conditions, uncorrectable
|
||||
errors are further classified into non-fatal errors and fatal errors.
|
||||
Non-fatal errors cause the particular transaction to be unreliable,
|
||||
but the PCI Express link itself is fully functional. Fatal errors, on
|
||||
but the PCIe link itself is fully functional. Fatal errors, on
|
||||
the other hand, cause the link to be unreliable.
|
||||
|
||||
When AER is enabled, a PCI Express device will automatically send an
|
||||
error message to the PCIe root port above it when the device captures
|
||||
When PCIe error reporting is enabled, a device will automatically send an
|
||||
error message to the Root Port above it when it captures
|
||||
an error. The Root Port, upon receiving an error reporting message,
|
||||
internally processes and logs the error message in its PCI Express
|
||||
capability structure. Error information being logged includes storing
|
||||
internally processes and logs the error message in its AER
|
||||
Capability structure. Error information being logged includes storing
|
||||
the error reporting agent's requestor ID into the Error Source
|
||||
Identification Registers and setting the error bits of the Root Error
|
||||
Status Register accordingly. If AER error reporting is enabled in Root
|
||||
Error Command Register, the Root Port generates an interrupt if an
|
||||
Status Register accordingly. If AER error reporting is enabled in the Root
|
||||
Error Command Register, the Root Port generates an interrupt when an
|
||||
error is detected.
|
||||
|
||||
Note that the errors as described above are related to the PCI Express
|
||||
Note that the errors as described above are related to the PCIe
|
||||
hierarchy and links. These errors do not include any device specific
|
||||
errors because device specific errors will still get sent directly to
|
||||
the device driver.
|
||||
|
||||
Configure the AER capability structure
|
||||
--------------------------------------
|
||||
|
||||
AER aware drivers of PCI Express component need change the device
|
||||
control registers to enable AER. They also could change AER registers,
|
||||
including mask and severity registers. Helper function
|
||||
pci_enable_pcie_error_reporting could be used to enable AER. See
|
||||
section 3.3.
|
||||
|
||||
Provide callbacks
|
||||
-----------------
|
||||
|
||||
callback reset_link to reset pci express link
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
callback reset_link to reset PCIe link
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
This callback is used to reset the pci express physical link when a
|
||||
fatal error happens. The root port aer service driver provides a
|
||||
default reset_link function, but different upstream ports might
|
||||
have different specifications to reset pci express link, so all
|
||||
upstream ports should provide their own reset_link functions.
|
||||
This callback is used to reset the PCIe physical link when a
|
||||
fatal error happens. The Root Port AER service driver provides a
|
||||
default reset_link function, but different Upstream Ports might
|
||||
have different specifications to reset the PCIe link, so
|
||||
Upstream Port drivers may provide their own reset_link functions.
|
||||
|
||||
Section 3.2.2.2 provides more detailed info on when to call
|
||||
reset_link.
|
||||
|
|
@ -162,24 +152,24 @@ reset_link.
|
|||
PCI error-recovery callbacks
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
The PCI Express AER Root driver uses error callbacks to coordinate
|
||||
The PCIe AER Root driver uses error callbacks to coordinate
|
||||
with downstream device drivers associated with a hierarchy in question
|
||||
when performing error recovery actions.
|
||||
|
||||
Data struct pci_driver has a pointer, err_handler, to point to
|
||||
pci_error_handlers who consists of a couple of callback function
|
||||
pointers. AER driver follows the rules defined in
|
||||
pci-error-recovery.txt except pci express specific parts (e.g.
|
||||
reset_link). Pls. refer to pci-error-recovery.txt for detailed
|
||||
pointers. The AER driver follows the rules defined in
|
||||
pci-error-recovery.rst except PCIe-specific parts (e.g.
|
||||
reset_link). Please refer to pci-error-recovery.rst for detailed
|
||||
definitions of the callbacks.
|
||||
|
||||
Below sections specify when to call the error callback functions.
|
||||
The sections below specify when to call the error callback functions.
|
||||
|
||||
Correctable errors
|
||||
~~~~~~~~~~~~~~~~~~
|
||||
|
||||
Correctable errors pose no impacts on the functionality of
|
||||
the interface. The PCI Express protocol can recover without any
|
||||
the interface. The PCIe protocol can recover without any
|
||||
software intervention or any loss of data. These errors do not
|
||||
require any recovery actions. The AER driver clears the device's
|
||||
correctable error status register accordingly and logs these errors.
|
||||
|
|
@ -190,12 +180,12 @@ Non-correctable (non-fatal and fatal) errors
|
|||
If an error message indicates a non-fatal error, performing link reset
|
||||
at upstream is not required. The AER driver calls error_detected(dev,
|
||||
pci_channel_io_normal) to all drivers associated within a hierarchy in
|
||||
question. for example::
|
||||
question. For example::
|
||||
|
||||
EndPoint<==>DownstreamPort B<==>UpstreamPort A<==>RootPort
|
||||
Endpoint <==> Downstream Port B <==> Upstream Port A <==> Root Port
|
||||
|
||||
If Upstream port A captures an AER error, the hierarchy consists of
|
||||
Downstream port B and EndPoint.
|
||||
If Upstream Port A captures an AER error, the hierarchy consists of
|
||||
Downstream Port B and Endpoint.
|
||||
|
||||
A driver may return PCI_ERS_RESULT_CAN_RECOVER,
|
||||
PCI_ERS_RESULT_DISCONNECT, or PCI_ERS_RESULT_NEED_RESET, depending on
|
||||
|
|
@ -212,36 +202,11 @@ to reset the link. If error_detected returns PCI_ERS_RESULT_CAN_RECOVER
|
|||
and reset_link returns PCI_ERS_RESULT_RECOVERED, the error handling goes
|
||||
to mmio_enabled.
|
||||
|
||||
helper functions
|
||||
----------------
|
||||
::
|
||||
|
||||
int pci_enable_pcie_error_reporting(struct pci_dev *dev);
|
||||
|
||||
pci_enable_pcie_error_reporting enables the device to send error
|
||||
messages to root port when an error is detected. Note that devices
|
||||
don't enable the error reporting by default, so device drivers need
|
||||
call this function to enable it.
|
||||
|
||||
::
|
||||
|
||||
int pci_disable_pcie_error_reporting(struct pci_dev *dev);
|
||||
|
||||
pci_disable_pcie_error_reporting disables the device to send error
|
||||
messages to root port when an error is detected.
|
||||
|
||||
::
|
||||
|
||||
int pci_aer_clear_nonfatal_status(struct pci_dev *dev);`
|
||||
|
||||
pci_aer_clear_nonfatal_status clears non-fatal errors in the uncorrectable
|
||||
error status register.
|
||||
|
||||
Frequent Asked Questions
|
||||
------------------------
|
||||
|
||||
Q:
|
||||
What happens if a PCI Express device driver does not provide an
|
||||
What happens if a PCIe device driver does not provide an
|
||||
error recovery handler (pci_driver->err_handler is equal to NULL)?
|
||||
|
||||
A:
|
||||
|
|
@ -257,24 +222,6 @@ A:
|
|||
Fatal error recovery will fail if the errors are reported by the
|
||||
upstream ports who are attached by the service driver.
|
||||
|
||||
Q:
|
||||
How does this infrastructure deal with driver that is not PCI
|
||||
Express aware?
|
||||
|
||||
A:
|
||||
This infrastructure calls the error callback functions of the
|
||||
driver when an error happens. But if the driver is not aware of
|
||||
PCI Express, the device might not report its own errors to root
|
||||
port.
|
||||
|
||||
Q:
|
||||
What modifications will that driver need to make it compatible
|
||||
with the PCI Express AER Root driver?
|
||||
|
||||
A:
|
||||
It could call the helper functions to enable AER in devices and
|
||||
cleanup uncorrectable status register. Pls. refer to section 3.3.
|
||||
|
||||
|
||||
Software error injection
|
||||
========================
|
||||
|
|
@ -296,5 +243,5 @@ from:
|
|||
|
||||
https://git.kernel.org/cgit/linux/kernel/git/gong.chen/aer-inject.git/
|
||||
|
||||
More information about aer-inject can be found in the document comes
|
||||
with its source code.
|
||||
More information about aer-inject can be found in the document in
|
||||
its source code.
|
||||
|
|
|
|||
|
|
@ -2071,41 +2071,7 @@ call.
|
|||
|
||||
Because RCU avoids interrupting idle CPUs, it is illegal to execute an
|
||||
RCU read-side critical section on an idle CPU. (Kernels built with
|
||||
``CONFIG_PROVE_RCU=y`` will splat if you try it.) The RCU_NONIDLE()
|
||||
macro and ``_rcuidle`` event tracing is provided to work around this
|
||||
restriction. In addition, rcu_is_watching() may be used to test
|
||||
whether or not it is currently legal to run RCU read-side critical
|
||||
sections on this CPU. I learned of the need for diagnostics on the one
|
||||
hand and RCU_NONIDLE() on the other while inspecting idle-loop code.
|
||||
Steven Rostedt supplied ``_rcuidle`` event tracing, which is used quite
|
||||
heavily in the idle loop. However, there are some restrictions on the
|
||||
code placed within RCU_NONIDLE():
|
||||
|
||||
#. Blocking is prohibited. In practice, this is not a serious
|
||||
restriction given that idle tasks are prohibited from blocking to
|
||||
begin with.
|
||||
#. Although nesting RCU_NONIDLE() is permitted, they cannot nest
|
||||
indefinitely deeply. However, given that they can be nested on the
|
||||
order of a million deep, even on 32-bit systems, this should not be a
|
||||
serious restriction. This nesting limit would probably be reached
|
||||
long after the compiler OOMed or the stack overflowed.
|
||||
#. Any code path that enters RCU_NONIDLE() must sequence out of that
|
||||
same RCU_NONIDLE(). For example, the following is grossly
|
||||
illegal:
|
||||
|
||||
::
|
||||
|
||||
1 RCU_NONIDLE({
|
||||
2 do_something();
|
||||
3 goto bad_idea; /* BUG!!! */
|
||||
4 do_something_else();});
|
||||
5 bad_idea:
|
||||
|
||||
|
||||
It is just as illegal to transfer control into the middle of
|
||||
RCU_NONIDLE()'s argument. Yes, in theory, you could transfer in
|
||||
as long as you also transferred out, but in practice you could also
|
||||
expect to get sharply worded review comments.
|
||||
``CONFIG_PROVE_RCU=y`` will splat if you try it.)
|
||||
|
||||
It is similarly socially unacceptable to interrupt an ``nohz_full`` CPU
|
||||
running in userspace. RCU must therefore track ``nohz_full`` userspace
|
||||
|
|
|
|||
|
|
@ -1117,7 +1117,6 @@ All: lockdep-checked RCU utility APIs::
|
|||
|
||||
RCU_LOCKDEP_WARN
|
||||
rcu_sleep_check
|
||||
RCU_NONIDLE
|
||||
|
||||
All: Unchecked RCU-protected pointer access::
|
||||
|
||||
|
|
|
|||
|
|
@ -103,7 +103,7 @@ allows a persistent, OS independent way of storing the user defined SSDTs. There
|
|||
is also work underway to implement EFI support for loading user defined SSDTs
|
||||
and using this method will make it easier to convert to the EFI loading
|
||||
mechanism when that will arrive. To enable it, the
|
||||
CONFIG_EFI_CUSTOM_SSDT_OVERLAYS shoyld be chosen to y.
|
||||
CONFIG_EFI_CUSTOM_SSDT_OVERLAYS should be chosen to y.
|
||||
|
||||
In order to load SSDTs from an EFI variable the ``"efivar_ssdt=..."`` kernel
|
||||
command line parameter can be used (the name has a limitation of 16 characters).
|
||||
|
|
|
|||
|
|
@ -508,9 +508,6 @@ cache_miss_collisions
|
|||
cache miss, but raced with a write and data was already present (usually 0
|
||||
since the synchronization for cache misses was rewritten)
|
||||
|
||||
cache_readaheads
|
||||
Count of times readahead occurred.
|
||||
|
||||
Sysfs - cache set
|
||||
~~~~~~~~~~~~~~~~~
|
||||
|
||||
|
|
|
|||
|
|
@ -297,7 +297,7 @@ Lock order is as follows::
|
|||
|
||||
Page lock (PG_locked bit of page->flags)
|
||||
mm->page_table_lock or split pte_lock
|
||||
lock_page_memcg (memcg->move_lock)
|
||||
folio_memcg_lock (memcg->move_lock)
|
||||
mapping->i_pages lock
|
||||
lruvec->lru_lock.
|
||||
|
||||
|
|
|
|||
|
|
@ -1580,6 +1580,13 @@ PAGE_SIZE multiple when read back.
|
|||
|
||||
Healthy workloads are not expected to reach this limit.
|
||||
|
||||
memory.swap.peak
|
||||
A read-only single value file which exists on non-root
|
||||
cgroups.
|
||||
|
||||
The max swap usage recorded for the cgroup and its
|
||||
descendants since the creation of the cgroup.
|
||||
|
||||
memory.swap.max
|
||||
A read-write single value file which exists on non-root
|
||||
cgroups. The default is "max".
|
||||
|
|
@ -2022,31 +2029,33 @@ that attribute:
|
|||
no-change
|
||||
Do not modify the I/O priority class.
|
||||
|
||||
none-to-rt
|
||||
For requests that do not have an I/O priority class (NONE),
|
||||
change the I/O priority class into RT. Do not modify
|
||||
the I/O priority class of other requests.
|
||||
promote-to-rt
|
||||
For requests that have a non-RT I/O priority class, change it into RT.
|
||||
Also change the priority level of these requests to 4. Do not modify
|
||||
the I/O priority of requests that have priority class RT.
|
||||
|
||||
restrict-to-be
|
||||
For requests that do not have an I/O priority class or that have I/O
|
||||
priority class RT, change it into BE. Do not modify the I/O priority
|
||||
class of requests that have priority class IDLE.
|
||||
priority class RT, change it into BE. Also change the priority level
|
||||
of these requests to 0. Do not modify the I/O priority class of
|
||||
requests that have priority class IDLE.
|
||||
|
||||
idle
|
||||
Change the I/O priority class of all requests into IDLE, the lowest
|
||||
I/O priority class.
|
||||
|
||||
none-to-rt
|
||||
Deprecated. Just an alias for promote-to-rt.
|
||||
|
||||
The following numerical values are associated with the I/O priority policies:
|
||||
|
||||
+-------------+---+
|
||||
| no-change | 0 |
|
||||
+-------------+---+
|
||||
| none-to-rt | 1 |
|
||||
+-------------+---+
|
||||
| rt-to-be | 2 |
|
||||
+-------------+---+
|
||||
| all-to-idle | 3 |
|
||||
+-------------+---+
|
||||
+----------------+---+
|
||||
| no-change | 0 |
|
||||
+----------------+---+
|
||||
| rt-to-be | 2 |
|
||||
+----------------+---+
|
||||
| all-to-idle | 3 |
|
||||
+----------------+---+
|
||||
|
||||
The numerical value that corresponds to each I/O priority class is as follows:
|
||||
|
||||
|
|
@ -2062,9 +2071,13 @@ The numerical value that corresponds to each I/O priority class is as follows:
|
|||
|
||||
The algorithm to set the I/O priority class for a request is as follows:
|
||||
|
||||
- Translate the I/O priority class policy into a number.
|
||||
- Change the request I/O priority class into the maximum of the I/O priority
|
||||
class policy number and the numerical I/O priority class.
|
||||
- If I/O priority class policy is promote-to-rt, change the request I/O
|
||||
priority class to IOPRIO_CLASS_RT and change the request I/O priority
|
||||
level to 4.
|
||||
- If I/O priorityt class is not promote-to-rt, translate the I/O priority
|
||||
class policy into a number, then change the request I/O priority class
|
||||
into the maximum of the I/O priority class policy number and the numerical
|
||||
I/O priority class.
|
||||
|
||||
PID
|
||||
---
|
||||
|
|
@ -2437,7 +2450,7 @@ Miscellaneous controller provides 3 interface files. If two misc resources (res_
|
|||
res_b 10
|
||||
|
||||
misc.current
|
||||
A read-only flat-keyed file shown in the non-root cgroups. It shows
|
||||
A read-only flat-keyed file shown in the all cgroups. It shows
|
||||
the current usage of the resources in the cgroup and its children.::
|
||||
|
||||
$ cat misc.current
|
||||
|
|
|
|||
|
|
@ -67,6 +67,16 @@ Optional feature parameters:
|
|||
Perform the replacement only if bio->bi_opf has all the
|
||||
selected flags set.
|
||||
|
||||
random_read_corrupt <probability>
|
||||
During <down interval>, replace random byte in a read bio
|
||||
with a random value. probability is an integer between
|
||||
0 and 1000000000 meaning 0% to 100% probability of corruption.
|
||||
|
||||
random_write_corrupt <probability>
|
||||
During <down interval>, replace random byte in a write bio
|
||||
with a random value. probability is an integer between
|
||||
0 and 1000000000 meaning 0% to 100% probability of corruption.
|
||||
|
||||
Examples:
|
||||
|
||||
Replaces the 32nd byte of READ bios with the value 1::
|
||||
|
|
|
|||
|
|
@ -25,7 +25,7 @@ mode it calculates and verifies the integrity tag internally. In this
|
|||
mode, the dm-integrity target can be used to detect silent data
|
||||
corruption on the disk or in the I/O path.
|
||||
|
||||
There's an alternate mode of operation where dm-integrity uses bitmap
|
||||
There's an alternate mode of operation where dm-integrity uses a bitmap
|
||||
instead of a journal. If a bit in the bitmap is 1, the corresponding
|
||||
region's data and integrity tags are not synchronized - if the machine
|
||||
crashes, the unsynchronized regions will be recalculated. The bitmap mode
|
||||
|
|
@ -38,6 +38,15 @@ the device. But it will only format the device if the superblock contains
|
|||
zeroes. If the superblock is neither valid nor zeroed, the dm-integrity
|
||||
target can't be loaded.
|
||||
|
||||
Accesses to the on-disk metadata area containing checksums (aka tags) are
|
||||
buffered using dm-bufio. When an access to any given metadata area
|
||||
occurs, each unique metadata area gets its own buffer(s). The buffer size
|
||||
is capped at the size of the metadata area, but may be smaller, thereby
|
||||
requiring multiple buffers to represent the full metadata area. A smaller
|
||||
buffer size will produce a smaller resulting read/write operation to the
|
||||
metadata area for small reads/writes. The metadata is still read even in
|
||||
a full write to the data covered by a single buffer.
|
||||
|
||||
To use the target for the first time:
|
||||
|
||||
1. overwrite the superblock with zeroes
|
||||
|
|
@ -93,7 +102,7 @@ journal_sectors:number
|
|||
device. If the device is already formatted, the value from the
|
||||
superblock is used.
|
||||
|
||||
interleave_sectors:number
|
||||
interleave_sectors:number (default 32768)
|
||||
The number of interleaved sectors. This values is rounded down to
|
||||
a power of two. If the device is already formatted, the value from
|
||||
the superblock is used.
|
||||
|
|
@ -102,20 +111,16 @@ meta_device:device
|
|||
Don't interleave the data and metadata on the device. Use a
|
||||
separate device for metadata.
|
||||
|
||||
buffer_sectors:number
|
||||
The number of sectors in one buffer. The value is rounded down to
|
||||
a power of two.
|
||||
buffer_sectors:number (default 128)
|
||||
The number of sectors in one metadata buffer. The value is rounded
|
||||
down to a power of two.
|
||||
|
||||
The tag area is accessed using buffers, the buffer size is
|
||||
configurable. The large buffer size means that the I/O size will
|
||||
be larger, but there could be less I/Os issued.
|
||||
|
||||
journal_watermark:number
|
||||
journal_watermark:number (default 50)
|
||||
The journal watermark in percents. When the size of the journal
|
||||
exceeds this watermark, the thread that flushes the journal will
|
||||
be started.
|
||||
|
||||
commit_time:number
|
||||
commit_time:number (default 10000)
|
||||
Commit time in milliseconds. When this time passes, the journal is
|
||||
written. The journal is also written immediately if the FLUSH
|
||||
request is received.
|
||||
|
|
@ -163,11 +168,10 @@ journal_mac:algorithm(:key) (the key is optional)
|
|||
the journal. Thus, modified sector number would be detected at
|
||||
this stage.
|
||||
|
||||
block_size:number
|
||||
The size of a data block in bytes. The larger the block size the
|
||||
block_size:number (default 512)
|
||||
The size of a data block in bytes. The larger the block size the
|
||||
less overhead there is for per-block integrity metadata.
|
||||
Supported values are 512, 1024, 2048 and 4096 bytes. If not
|
||||
specified the default block size is 512 bytes.
|
||||
Supported values are 512, 1024, 2048 and 4096 bytes.
|
||||
|
||||
sectors_per_bit:number
|
||||
In the bitmap mode, this parameter specifies the number of
|
||||
|
|
@ -209,6 +213,12 @@ table and swap the tables with suspend and resume). The other arguments
|
|||
should not be changed when reloading the target because the layout of disk
|
||||
data depend on them and the reloaded target would be non-functional.
|
||||
|
||||
For example, on a device using the default interleave_sectors of 32768, a
|
||||
block_size of 512, and an internal_hash of crc32c with a tag size of 4
|
||||
bytes, it will take 128 KiB of tags to track a full data area, requiring
|
||||
256 sectors of metadata per data area. With the default buffer_sectors of
|
||||
128, that means there will be 2 buffers per metadata area, or 2 buffers
|
||||
per 16 MiB of data.
|
||||
|
||||
Status line:
|
||||
|
||||
|
|
@ -286,7 +296,8 @@ The layout of the formatted block device:
|
|||
Each run contains:
|
||||
|
||||
* tag area - it contains integrity tags. There is one tag for each
|
||||
sector in the data area
|
||||
sector in the data area. The size of this area is always 4KiB or
|
||||
greater.
|
||||
* data area - it contains data sectors. The number of data sectors
|
||||
in one run must be a power of two. log2 of this value is stored
|
||||
in the superblock.
|
||||
|
|
|
|||
|
|
@ -1,17 +1,17 @@
|
|||
acpi= [HW,ACPI,X86,ARM64]
|
||||
acpi= [HW,ACPI,X86,ARM64,RISCV64]
|
||||
Advanced Configuration and Power Interface
|
||||
Format: { force | on | off | strict | noirq | rsdt |
|
||||
copy_dsdt }
|
||||
force -- enable ACPI if default was off
|
||||
on -- enable ACPI but allow fallback to DT [arm64]
|
||||
on -- enable ACPI but allow fallback to DT [arm64,riscv64]
|
||||
off -- disable ACPI if default was on
|
||||
noirq -- do not use ACPI for IRQ routing
|
||||
strict -- Be less tolerant of platforms that are not
|
||||
strictly ACPI specification compliant.
|
||||
rsdt -- prefer RSDT over (default) XSDT
|
||||
copy_dsdt -- copy DSDT to memory
|
||||
For ARM64, ONLY "acpi=off", "acpi=on" or "acpi=force"
|
||||
are available
|
||||
For ARM64 and RISCV64, ONLY "acpi=off", "acpi=on" or
|
||||
"acpi=force" are available
|
||||
|
||||
See also Documentation/power/runtime_pm.rst, pci=noacpi
|
||||
|
||||
|
|
@ -304,7 +304,7 @@
|
|||
EL0 is indicated by /sys/devices/system/cpu/aarch32_el0
|
||||
and hot-unplug operations may be restricted.
|
||||
|
||||
See Documentation/arm64/asymmetric-32bit.rst for more
|
||||
See Documentation/arch/arm64/asymmetric-32bit.rst for more
|
||||
information.
|
||||
|
||||
amd_iommu= [HW,X86-64]
|
||||
|
|
@ -323,6 +323,7 @@
|
|||
option with care.
|
||||
pgtbl_v1 - Use v1 page table for DMA-API (Default).
|
||||
pgtbl_v2 - Use v2 page table for DMA-API.
|
||||
irtcachedis - Disable Interrupt Remapping Table (IRT) caching.
|
||||
|
||||
amd_iommu_dump= [HW,X86-64]
|
||||
Enable AMD IOMMU driver option to dump the ACPI table
|
||||
|
|
@ -429,6 +430,9 @@
|
|||
arm64.nosme [ARM64] Unconditionally disable Scalable Matrix
|
||||
Extension support
|
||||
|
||||
arm64.nomops [ARM64] Unconditionally disable Memory Copy and Memory
|
||||
Set instructions support
|
||||
|
||||
ataflop= [HW,M68k]
|
||||
|
||||
atarimouse= [HW,MOUSE] Atari Mouse
|
||||
|
|
@ -818,20 +822,6 @@
|
|||
Format:
|
||||
<first_slot>,<last_slot>,<port>,<enum_bit>[,<debug>]
|
||||
|
||||
cpu0_hotplug [X86] Turn on CPU0 hotplug feature when
|
||||
CONFIG_BOOTPARAM_HOTPLUG_CPU0 is off.
|
||||
Some features depend on CPU0. Known dependencies are:
|
||||
1. Resume from suspend/hibernate depends on CPU0.
|
||||
Suspend/hibernate will fail if CPU0 is offline and you
|
||||
need to online CPU0 before suspend/hibernate.
|
||||
2. PIC interrupts also depend on CPU0. CPU0 can't be
|
||||
removed if a PIC interrupt is detected.
|
||||
It's said poweroff/reboot may depend on CPU0 on some
|
||||
machines although I haven't seen such issues so far
|
||||
after CPU0 is offline on a few tested machines.
|
||||
If the dependencies are under your control, you can
|
||||
turn on cpu0_hotplug.
|
||||
|
||||
cpuidle.off=1 [CPU_IDLE]
|
||||
disable the cpuidle sub-system
|
||||
|
||||
|
|
@ -852,6 +842,12 @@
|
|||
on every CPU online, such as boot, and resume from suspend.
|
||||
Default: 10000
|
||||
|
||||
cpuhp.parallel=
|
||||
[SMP] Enable/disable parallel bringup of secondary CPUs
|
||||
Format: <bool>
|
||||
Default is enabled if CONFIG_HOTPLUG_PARALLEL=y. Otherwise
|
||||
the parameter has no effect.
|
||||
|
||||
crash_kexec_post_notifiers
|
||||
Run kdump after running panic-notifiers and dumping
|
||||
kmsg. This only for the users who doubt kdump always
|
||||
|
|
@ -2117,6 +2113,16 @@
|
|||
disable
|
||||
Do not enable intel_pstate as the default
|
||||
scaling driver for the supported processors
|
||||
active
|
||||
Use intel_pstate driver to bypass the scaling
|
||||
governors layer of cpufreq and provides it own
|
||||
algorithms for p-state selection. There are two
|
||||
P-state selection algorithms provided by
|
||||
intel_pstate in the active mode: powersave and
|
||||
performance. The way they both operate depends
|
||||
on whether or not the hardware managed P-states
|
||||
(HWP) feature has been enabled in the processor
|
||||
and possibly on the processor model.
|
||||
passive
|
||||
Use intel_pstate as a scaling driver, but configure it
|
||||
to work with generic cpufreq governors (instead of
|
||||
|
|
@ -2551,12 +2557,13 @@
|
|||
If the value is 0 (the default), KVM will pick a period based
|
||||
on the ratio, such that a page is zapped after 1 hour on average.
|
||||
|
||||
kvm-amd.nested= [KVM,AMD] Allow nested virtualization in KVM/SVM.
|
||||
Default is 1 (enabled)
|
||||
kvm-amd.nested= [KVM,AMD] Control nested virtualization feature in
|
||||
KVM/SVM. Default is 1 (enabled).
|
||||
|
||||
kvm-amd.npt= [KVM,AMD] Disable nested paging (virtualized MMU)
|
||||
for all guests.
|
||||
Default is 1 (enabled) if in 64-bit or 32-bit PAE mode.
|
||||
kvm-amd.npt= [KVM,AMD] Control KVM's use of Nested Page Tables,
|
||||
a.k.a. Two-Dimensional Page Tables. Default is 1
|
||||
(enabled). Disable by KVM if hardware lacks support
|
||||
for NPT.
|
||||
|
||||
kvm-arm.mode=
|
||||
[KVM,ARM] Select one of KVM/arm64's modes of operation.
|
||||
|
|
@ -2602,30 +2609,33 @@
|
|||
Format: <integer>
|
||||
Default: 5
|
||||
|
||||
kvm-intel.ept= [KVM,Intel] Disable extended page tables
|
||||
(virtualized MMU) support on capable Intel chips.
|
||||
Default is 1 (enabled)
|
||||
kvm-intel.ept= [KVM,Intel] Control KVM's use of Extended Page Tables,
|
||||
a.k.a. Two-Dimensional Page Tables. Default is 1
|
||||
(enabled). Disable by KVM if hardware lacks support
|
||||
for EPT.
|
||||
|
||||
kvm-intel.emulate_invalid_guest_state=
|
||||
[KVM,Intel] Disable emulation of invalid guest state.
|
||||
Ignored if kvm-intel.enable_unrestricted_guest=1, as
|
||||
guest state is never invalid for unrestricted guests.
|
||||
This param doesn't apply to nested guests (L2), as KVM
|
||||
never emulates invalid L2 guest state.
|
||||
Default is 1 (enabled)
|
||||
[KVM,Intel] Control whether to emulate invalid guest
|
||||
state. Ignored if kvm-intel.enable_unrestricted_guest=1,
|
||||
as guest state is never invalid for unrestricted
|
||||
guests. This param doesn't apply to nested guests (L2),
|
||||
as KVM never emulates invalid L2 guest state.
|
||||
Default is 1 (enabled).
|
||||
|
||||
kvm-intel.flexpriority=
|
||||
[KVM,Intel] Disable FlexPriority feature (TPR shadow).
|
||||
Default is 1 (enabled)
|
||||
[KVM,Intel] Control KVM's use of FlexPriority feature
|
||||
(TPR shadow). Default is 1 (enabled). Disalbe by KVM if
|
||||
hardware lacks support for it.
|
||||
|
||||
kvm-intel.nested=
|
||||
[KVM,Intel] Enable VMX nesting (nVMX).
|
||||
Default is 0 (disabled)
|
||||
[KVM,Intel] Control nested virtualization feature in
|
||||
KVM/VMX. Default is 1 (enabled).
|
||||
|
||||
kvm-intel.unrestricted_guest=
|
||||
[KVM,Intel] Disable unrestricted guest feature
|
||||
(virtualized real and unpaged mode) on capable
|
||||
Intel chips. Default is 1 (enabled)
|
||||
[KVM,Intel] Control KVM's use of unrestricted guest
|
||||
feature (virtualized real and unpaged mode). Default
|
||||
is 1 (enabled). Disable by KVM if EPT is disabled or
|
||||
hardware lacks support for it.
|
||||
|
||||
kvm-intel.vmentry_l1d_flush=[KVM,Intel] Mitigation for L1 Terminal Fault
|
||||
CVE-2018-3620.
|
||||
|
|
@ -2639,9 +2649,10 @@
|
|||
|
||||
Default is cond (do L1 cache flush in specific instances)
|
||||
|
||||
kvm-intel.vpid= [KVM,Intel] Disable Virtual Processor Identification
|
||||
feature (tagged TLBs) on capable Intel chips.
|
||||
Default is 1 (enabled)
|
||||
kvm-intel.vpid= [KVM,Intel] Control KVM's use of Virtual Processor
|
||||
Identification feature (tagged TLBs). Default is 1
|
||||
(enabled). Disable by KVM if hardware lacks support
|
||||
for it.
|
||||
|
||||
l1d_flush= [X86,INTEL]
|
||||
Control mitigation for L1D based snooping vulnerability.
|
||||
|
|
@ -3423,6 +3434,10 @@
|
|||
[HW] Make the MicroTouch USB driver use raw coordinates
|
||||
('y', default) or cooked coordinates ('n')
|
||||
|
||||
mtrr=debug [X86]
|
||||
Enable printing debug information related to MTRR
|
||||
registers at boot time.
|
||||
|
||||
mtrr_chunk_size=nn[KMG] [X86]
|
||||
used for mtrr cleanup. It is largest continuous chunk
|
||||
that could hold holes aka. UC entries.
|
||||
|
|
@ -3702,8 +3717,8 @@
|
|||
|
||||
nohibernate [HIBERNATION] Disable hibernation and resume.
|
||||
|
||||
nohlt [ARM,ARM64,MICROBLAZE,SH] Forces the kernel to busy wait
|
||||
in do_idle() and not use the arch_cpu_idle()
|
||||
nohlt [ARM,ARM64,MICROBLAZE,MIPS,SH] Forces the kernel to
|
||||
busy wait in do_idle() and not use the arch_cpu_idle()
|
||||
implementation; requires CONFIG_GENERIC_IDLE_POLL_SETUP
|
||||
to be effective. This is useful on platforms where the
|
||||
sleep(SH) or wfi(ARM,ARM64) instructions do not work
|
||||
|
|
@ -3838,7 +3853,7 @@
|
|||
nosmp [SMP] Tells an SMP kernel to act as a UP kernel,
|
||||
and disable the IO APIC. legacy for "maxcpus=0".
|
||||
|
||||
nosmt [KNL,S390] Disable symmetric multithreading (SMT).
|
||||
nosmt [KNL,MIPS,S390] Disable symmetric multithreading (SMT).
|
||||
Equivalent to smt=1.
|
||||
|
||||
[KNL,X86] Disable symmetric multithreading (SMT).
|
||||
|
|
@ -4049,7 +4064,7 @@
|
|||
extra details on the taint flags that users can pick
|
||||
to compose the bitmask to assign to panic_on_taint.
|
||||
|
||||
panic_on_warn panic() instead of WARN(). Useful to cause kdump
|
||||
panic_on_warn=1 panic() instead of WARN(). Useful to cause kdump
|
||||
on a WARN().
|
||||
|
||||
parkbd.port= [HW] Parallel port number the keyboard adapter is
|
||||
|
|
@ -4736,43 +4751,6 @@
|
|||
the propagation of recent CPU-hotplug changes up
|
||||
the rcu_node combining tree.
|
||||
|
||||
rcutree.use_softirq= [KNL]
|
||||
If set to zero, move all RCU_SOFTIRQ processing to
|
||||
per-CPU rcuc kthreads. Defaults to a non-zero
|
||||
value, meaning that RCU_SOFTIRQ is used by default.
|
||||
Specify rcutree.use_softirq=0 to use rcuc kthreads.
|
||||
|
||||
But note that CONFIG_PREEMPT_RT=y kernels disable
|
||||
this kernel boot parameter, forcibly setting it
|
||||
to zero.
|
||||
|
||||
rcutree.rcu_fanout_exact= [KNL]
|
||||
Disable autobalancing of the rcu_node combining
|
||||
tree. This is used by rcutorture, and might
|
||||
possibly be useful for architectures having high
|
||||
cache-to-cache transfer latencies.
|
||||
|
||||
rcutree.rcu_fanout_leaf= [KNL]
|
||||
Change the number of CPUs assigned to each
|
||||
leaf rcu_node structure. Useful for very
|
||||
large systems, which will choose the value 64,
|
||||
and for NUMA systems with large remote-access
|
||||
latencies, which will choose a value aligned
|
||||
with the appropriate hardware boundaries.
|
||||
|
||||
rcutree.rcu_min_cached_objs= [KNL]
|
||||
Minimum number of objects which are cached and
|
||||
maintained per one CPU. Object size is equal
|
||||
to PAGE_SIZE. The cache allows to reduce the
|
||||
pressure to page allocator, also it makes the
|
||||
whole algorithm to behave better in low memory
|
||||
condition.
|
||||
|
||||
rcutree.rcu_delay_page_cache_fill_msec= [KNL]
|
||||
Set the page-cache refill delay (in milliseconds)
|
||||
in response to low-memory conditions. The range
|
||||
of permitted values is in the range 0:100000.
|
||||
|
||||
rcutree.jiffies_till_first_fqs= [KNL]
|
||||
Set delay from grace-period initialization to
|
||||
first attempt to force quiescent states.
|
||||
|
|
@ -4811,21 +4789,6 @@
|
|||
When RCU_NOCB_CPU is set, also adjust the
|
||||
priority of NOCB callback kthreads.
|
||||
|
||||
rcutree.rcu_divisor= [KNL]
|
||||
Set the shift-right count to use to compute
|
||||
the callback-invocation batch limit bl from
|
||||
the number of callbacks queued on this CPU.
|
||||
The result will be bounded below by the value of
|
||||
the rcutree.blimit kernel parameter. Every bl
|
||||
callbacks, the softirq handler will exit in
|
||||
order to allow the CPU to do other work.
|
||||
|
||||
Please note that this callback-invocation batch
|
||||
limit applies only to non-offloaded callback
|
||||
invocation. Offloaded callbacks are instead
|
||||
invoked in the context of an rcuoc kthread, which
|
||||
scheduler will preempt as it does any other task.
|
||||
|
||||
rcutree.nocb_nobypass_lim_per_jiffy= [KNL]
|
||||
On callback-offloaded (rcu_nocbs) CPUs,
|
||||
RCU reduces the lock contention that would
|
||||
|
|
@ -4839,14 +4802,6 @@
|
|||
the ->nocb_bypass queue. The definition of "too
|
||||
many" is supplied by this kernel boot parameter.
|
||||
|
||||
rcutree.rcu_nocb_gp_stride= [KNL]
|
||||
Set the number of NOCB callback kthreads in
|
||||
each group, which defaults to the square root
|
||||
of the number of CPUs. Larger numbers reduce
|
||||
the wakeup overhead on the global grace-period
|
||||
kthread, but increases that same overhead on
|
||||
each group's NOCB grace-period kthread.
|
||||
|
||||
rcutree.qhimark= [KNL]
|
||||
Set threshold of queued RCU callbacks beyond which
|
||||
batch limiting is disabled.
|
||||
|
|
@ -4864,6 +4819,56 @@
|
|||
on rcutree.qhimark at boot time and to zero to
|
||||
disable more aggressive help enlistment.
|
||||
|
||||
rcutree.rcu_delay_page_cache_fill_msec= [KNL]
|
||||
Set the page-cache refill delay (in milliseconds)
|
||||
in response to low-memory conditions. The range
|
||||
of permitted values is in the range 0:100000.
|
||||
|
||||
rcutree.rcu_divisor= [KNL]
|
||||
Set the shift-right count to use to compute
|
||||
the callback-invocation batch limit bl from
|
||||
the number of callbacks queued on this CPU.
|
||||
The result will be bounded below by the value of
|
||||
the rcutree.blimit kernel parameter. Every bl
|
||||
callbacks, the softirq handler will exit in
|
||||
order to allow the CPU to do other work.
|
||||
|
||||
Please note that this callback-invocation batch
|
||||
limit applies only to non-offloaded callback
|
||||
invocation. Offloaded callbacks are instead
|
||||
invoked in the context of an rcuoc kthread, which
|
||||
scheduler will preempt as it does any other task.
|
||||
|
||||
rcutree.rcu_fanout_exact= [KNL]
|
||||
Disable autobalancing of the rcu_node combining
|
||||
tree. This is used by rcutorture, and might
|
||||
possibly be useful for architectures having high
|
||||
cache-to-cache transfer latencies.
|
||||
|
||||
rcutree.rcu_fanout_leaf= [KNL]
|
||||
Change the number of CPUs assigned to each
|
||||
leaf rcu_node structure. Useful for very
|
||||
large systems, which will choose the value 64,
|
||||
and for NUMA systems with large remote-access
|
||||
latencies, which will choose a value aligned
|
||||
with the appropriate hardware boundaries.
|
||||
|
||||
rcutree.rcu_min_cached_objs= [KNL]
|
||||
Minimum number of objects which are cached and
|
||||
maintained per one CPU. Object size is equal
|
||||
to PAGE_SIZE. The cache allows to reduce the
|
||||
pressure to page allocator, also it makes the
|
||||
whole algorithm to behave better in low memory
|
||||
condition.
|
||||
|
||||
rcutree.rcu_nocb_gp_stride= [KNL]
|
||||
Set the number of NOCB callback kthreads in
|
||||
each group, which defaults to the square root
|
||||
of the number of CPUs. Larger numbers reduce
|
||||
the wakeup overhead on the global grace-period
|
||||
kthread, but increases that same overhead on
|
||||
each group's NOCB grace-period kthread.
|
||||
|
||||
rcutree.rcu_kick_kthreads= [KNL]
|
||||
Cause the grace-period kthread to get an extra
|
||||
wake_up() if it sleeps three times longer than
|
||||
|
|
@ -4871,6 +4876,13 @@
|
|||
This wake_up() will be accompanied by a
|
||||
WARN_ONCE() splat and an ftrace_dump().
|
||||
|
||||
rcutree.rcu_resched_ns= [KNL]
|
||||
Limit the time spend invoking a batch of RCU
|
||||
callbacks to the specified number of nanoseconds.
|
||||
By default, this limit is checked only once
|
||||
every 32 callbacks in order to limit the pain
|
||||
inflicted by local_clock() overhead.
|
||||
|
||||
rcutree.rcu_unlock_delay= [KNL]
|
||||
In CONFIG_RCU_STRICT_GRACE_PERIOD=y kernels,
|
||||
this specifies an rcu_read_unlock()-time delay
|
||||
|
|
@ -4885,6 +4897,16 @@
|
|||
rcu_node tree with an eye towards determining
|
||||
why a new grace period has not yet started.
|
||||
|
||||
rcutree.use_softirq= [KNL]
|
||||
If set to zero, move all RCU_SOFTIRQ processing to
|
||||
per-CPU rcuc kthreads. Defaults to a non-zero
|
||||
value, meaning that RCU_SOFTIRQ is used by default.
|
||||
Specify rcutree.use_softirq=0 to use rcuc kthreads.
|
||||
|
||||
But note that CONFIG_PREEMPT_RT=y kernels disable
|
||||
this kernel boot parameter, forcibly setting it
|
||||
to zero.
|
||||
|
||||
rcuscale.gp_async= [KNL]
|
||||
Measure performance of asynchronous
|
||||
grace-period primitives such as call_rcu().
|
||||
|
|
@ -5087,8 +5109,17 @@
|
|||
|
||||
rcutorture.stall_cpu_block= [KNL]
|
||||
Sleep while stalling if set. This will result
|
||||
in warnings from preemptible RCU in addition
|
||||
to any other stall-related activity.
|
||||
in warnings from preemptible RCU in addition to
|
||||
any other stall-related activity. Note that
|
||||
in kernels built with CONFIG_PREEMPTION=n and
|
||||
CONFIG_PREEMPT_COUNT=y, this parameter will
|
||||
cause the CPU to pass through a quiescent state.
|
||||
Given CONFIG_PREEMPTION=n, this will suppress
|
||||
RCU CPU stall warnings, but will instead result
|
||||
in scheduling-while-atomic splats.
|
||||
|
||||
Use of this module parameter results in splats.
|
||||
|
||||
|
||||
rcutorture.stall_cpu_holdoff= [KNL]
|
||||
Time to wait (s) after boot before inducing stall.
|
||||
|
|
@ -5452,7 +5483,12 @@
|
|||
port and the regular usb controller gets disabled.
|
||||
|
||||
root= [KNL] Root filesystem
|
||||
See name_to_dev_t comment in init/do_mounts.c.
|
||||
Usually this a a block device specifier of some kind,
|
||||
see the early_lookup_bdev comment in
|
||||
block/early-lookup.c for details.
|
||||
Alternatively this can be "ram" for the legacy initial
|
||||
ramdisk, "nfs" and "cifs" for root on a network file
|
||||
system, or "mtd" and "ubi" for mounting from raw flash.
|
||||
|
||||
rootdelay= [KNL] Delay (in seconds) to pause before attempting to
|
||||
mount the root filesystem
|
||||
|
|
@ -5735,7 +5771,7 @@
|
|||
1: Fast pin select (default)
|
||||
2: ATC IRMode
|
||||
|
||||
smt= [KNL,S390] Set the maximum number of threads (logical
|
||||
smt= [KNL,MIPS,S390] Set the maximum number of threads (logical
|
||||
CPUs) to use per physical CPU on systems capable of
|
||||
symmetric multithreading (SMT). Will be capped to the
|
||||
actual hardware limit.
|
||||
|
|
@ -6563,6 +6599,12 @@
|
|||
unknown_nmi_panic
|
||||
[X86] Cause panic on unknown NMI.
|
||||
|
||||
unwind_debug [X86-64]
|
||||
Enable unwinder debug output. This can be
|
||||
useful for debugging certain unwinder error
|
||||
conditions, including corrupt stacks and
|
||||
bad/missing unwinder metadata.
|
||||
|
||||
usbcore.authorized_default=
|
||||
[USB] Default USB device authorization:
|
||||
(default -1 = authorized except for wireless USB,
|
||||
|
|
@ -6931,6 +6973,18 @@
|
|||
it can be updated at runtime by writing to the
|
||||
corresponding sysfs file.
|
||||
|
||||
workqueue.cpu_intensive_thresh_us=
|
||||
Per-cpu work items which run for longer than this
|
||||
threshold are automatically considered CPU intensive
|
||||
and excluded from concurrency management to prevent
|
||||
them from noticeably delaying other per-cpu work
|
||||
items. Default is 10000 (10ms).
|
||||
|
||||
If CONFIG_WQ_CPU_INTENSIVE_REPORT is set, the kernel
|
||||
will report the work functions which violate this
|
||||
threshold repeatedly. They are likely good
|
||||
candidates for using WQ_UNBOUND workqueues instead.
|
||||
|
||||
workqueue.disable_numa
|
||||
By default, all work items queued to unbound
|
||||
workqueues are affine to the NUMA nodes they're
|
||||
|
|
|
|||
|
|
@ -10,8 +10,8 @@ Introduction
|
|||
============
|
||||
|
||||
This file documents the driver for the Rockchip ISP1 that is part of RK3288
|
||||
and RK3399 SoCs. The driver is located under drivers/staging/media/rkisp1
|
||||
and uses the Media-Controller API.
|
||||
and RK3399 SoCs. The driver is located under drivers/media/platform/rockchip/
|
||||
rkisp1 and uses the Media-Controller API.
|
||||
|
||||
Revisions
|
||||
=========
|
||||
|
|
|
|||
|
|
@ -119,9 +119,9 @@ set size has chronologically changed.::
|
|||
Data Access Pattern Aware Memory Management
|
||||
===========================================
|
||||
|
||||
Below three commands make every memory region of size >=4K that doesn't
|
||||
accessed for >=60 seconds in your workload to be swapped out. ::
|
||||
Below command makes every memory region of size >=4K that has not accessed for
|
||||
>=60 seconds in your workload to be swapped out. ::
|
||||
|
||||
$ echo "#min-size max-size min-acc max-acc min-age max-age action" > test_scheme
|
||||
$ echo "4K max 0 0 60s max pageout" >> test_scheme
|
||||
$ damo schemes -c test_scheme <pid of your workload>
|
||||
$ sudo damo schemes --damos_access_rate 0 0 --damos_sz_region 4K max \
|
||||
--damos_age 60s max --damos_action pageout \
|
||||
<pid of your workload>
|
||||
|
|
|
|||
|
|
@ -10,9 +10,8 @@ DAMON provides below interfaces for different users.
|
|||
`This <https://github.com/awslabs/damo>`_ is for privileged people such as
|
||||
system administrators who want a just-working human-friendly interface.
|
||||
Using this, users can use the DAMON’s major features in a human-friendly way.
|
||||
It may not be highly tuned for special cases, though. It supports both
|
||||
virtual and physical address spaces monitoring. For more detail, please
|
||||
refer to its `usage document
|
||||
It may not be highly tuned for special cases, though. For more detail,
|
||||
please refer to its `usage document
|
||||
<https://github.com/awslabs/damo/blob/next/USAGE.md>`_.
|
||||
- *sysfs interface.*
|
||||
:ref:`This <sysfs_interface>` is for privileged user space programmers who
|
||||
|
|
@ -20,11 +19,7 @@ DAMON provides below interfaces for different users.
|
|||
features by reading from and writing to special sysfs files. Therefore,
|
||||
you can write and use your personalized DAMON sysfs wrapper programs that
|
||||
reads/writes the sysfs files instead of you. The `DAMON user space tool
|
||||
<https://github.com/awslabs/damo>`_ is one example of such programs. It
|
||||
supports both virtual and physical address spaces monitoring. Note that this
|
||||
interface provides only simple :ref:`statistics <damos_stats>` for the
|
||||
monitoring results. For detailed monitoring results, DAMON provides a
|
||||
:ref:`tracepoint <tracepoint>`.
|
||||
<https://github.com/awslabs/damo>`_ is one example of such programs.
|
||||
- *debugfs interface. (DEPRECATED!)*
|
||||
:ref:`This <debugfs_interface>` is almost identical to :ref:`sysfs interface
|
||||
<sysfs_interface>`. This is deprecated, so users should move to the
|
||||
|
|
@ -139,7 +134,7 @@ scheme of the kdamond. Writing ``clear_schemes_tried_regions`` to ``state``
|
|||
file clears the DAMON-based operating scheme action tried regions directory for
|
||||
each DAMON-based operation scheme of the kdamond. For details of the
|
||||
DAMON-based operation scheme action tried regions directory, please refer to
|
||||
:ref:tried_regions section <sysfs_schemes_tried_regions>`.
|
||||
:ref:`tried_regions section <sysfs_schemes_tried_regions>`.
|
||||
|
||||
If the state is ``on``, reading ``pid`` shows the pid of the kdamond thread.
|
||||
|
||||
|
|
@ -259,12 +254,9 @@ be equal or smaller than ``start`` of directory ``N+1``.
|
|||
contexts/<N>/schemes/
|
||||
---------------------
|
||||
|
||||
For usual DAMON-based data access aware memory management optimizations, users
|
||||
would normally want the system to apply a memory management action to a memory
|
||||
region of a specific access pattern. DAMON receives such formalized operation
|
||||
schemes from the user and applies those to the target memory regions. Users
|
||||
can get and set the schemes by reading from and writing to files under this
|
||||
directory.
|
||||
The directory for DAMON-based Operation Schemes (:ref:`DAMOS
|
||||
<damon_design_damos>`). Users can get and set the schemes by reading from and
|
||||
writing to files under this directory.
|
||||
|
||||
In the beginning, this directory has only one file, ``nr_schemes``. Writing a
|
||||
number (``N``) to the file creates the number of child directories named ``0``
|
||||
|
|
@ -277,12 +269,12 @@ In each scheme directory, five directories (``access_pattern``, ``quotas``,
|
|||
``watermarks``, ``filters``, ``stats``, and ``tried_regions``) and one file
|
||||
(``action``) exist.
|
||||
|
||||
The ``action`` file is for setting and getting what action you want to apply to
|
||||
memory regions having specific access pattern of the interest. The keywords
|
||||
that can be written to and read from the file and their meaning are as below.
|
||||
The ``action`` file is for setting and getting the scheme's :ref:`action
|
||||
<damon_design_damos_action>`. The keywords that can be written to and read
|
||||
from the file and their meaning are as below.
|
||||
|
||||
Note that support of each action depends on the running DAMON operations set
|
||||
`implementation <sysfs_contexts>`.
|
||||
:ref:`implementation <sysfs_contexts>`.
|
||||
|
||||
- ``willneed``: Call ``madvise()`` for the region with ``MADV_WILLNEED``.
|
||||
Supported by ``vaddr`` and ``fvaddr`` operations set.
|
||||
|
|
@ -304,32 +296,21 @@ Note that support of each action depends on the running DAMON operations set
|
|||
schemes/<N>/access_pattern/
|
||||
---------------------------
|
||||
|
||||
The target access pattern of each DAMON-based operation scheme is constructed
|
||||
with three ranges including the size of the region in bytes, number of
|
||||
monitored accesses per aggregate interval, and number of aggregated intervals
|
||||
for the age of the region.
|
||||
The directory for the target access :ref:`pattern
|
||||
<damon_design_damos_access_pattern>` of the given DAMON-based operation scheme.
|
||||
|
||||
Under the ``access_pattern`` directory, three directories (``sz``,
|
||||
``nr_accesses``, and ``age``) each having two files (``min`` and ``max``)
|
||||
exist. You can set and get the access pattern for the given scheme by writing
|
||||
to and reading from the ``min`` and ``max`` files under ``sz``,
|
||||
``nr_accesses``, and ``age`` directories, respectively.
|
||||
``nr_accesses``, and ``age`` directories, respectively. Note that the ``min``
|
||||
and the ``max`` form a closed interval.
|
||||
|
||||
schemes/<N>/quotas/
|
||||
-------------------
|
||||
|
||||
Optimal ``target access pattern`` for each ``action`` is workload dependent, so
|
||||
not easy to find. Worse yet, setting a scheme of some action too aggressive
|
||||
can cause severe overhead. To avoid such overhead, users can limit time and
|
||||
size quota for each scheme. In detail, users can ask DAMON to try to use only
|
||||
up to specific time (``time quota``) for applying the action, and to apply the
|
||||
action to only up to specific amount (``size quota``) of memory regions having
|
||||
the target access pattern within a given time interval (``reset interval``).
|
||||
|
||||
When the quota limit is expected to be exceeded, DAMON prioritizes found memory
|
||||
regions of the ``target access pattern`` based on their size, access frequency,
|
||||
and age. For personalized prioritization, users can set the weights for the
|
||||
three properties.
|
||||
The directory for the :ref:`quotas <damon_design_damos_quotas>` of the given
|
||||
DAMON-based operation scheme.
|
||||
|
||||
Under ``quotas`` directory, three files (``ms``, ``bytes``,
|
||||
``reset_interval_ms``) and one directory (``weights``) having three files
|
||||
|
|
@ -337,23 +318,26 @@ Under ``quotas`` directory, three files (``ms``, ``bytes``,
|
|||
|
||||
You can set the ``time quota`` in milliseconds, ``size quota`` in bytes, and
|
||||
``reset interval`` in milliseconds by writing the values to the three files,
|
||||
respectively. You can also set the prioritization weights for size, access
|
||||
frequency, and age in per-thousand unit by writing the values to the three
|
||||
files under the ``weights`` directory.
|
||||
respectively. Then, DAMON tries to use only up to ``time quota`` milliseconds
|
||||
for applying the ``action`` to memory regions of the ``access_pattern``, and to
|
||||
apply the action to only up to ``bytes`` bytes of memory regions within the
|
||||
``reset_interval_ms``. Setting both ``ms`` and ``bytes`` zero disables the
|
||||
quota limits.
|
||||
|
||||
You can also set the :ref:`prioritization weights
|
||||
<damon_design_damos_quotas_prioritization>` for size, access frequency, and age
|
||||
in per-thousand unit by writing the values to the three files under the
|
||||
``weights`` directory.
|
||||
|
||||
schemes/<N>/watermarks/
|
||||
-----------------------
|
||||
|
||||
To allow easy activation and deactivation of each scheme based on system
|
||||
status, DAMON provides a feature called watermarks. The feature receives five
|
||||
values called ``metric``, ``interval``, ``high``, ``mid``, and ``low``. The
|
||||
``metric`` is the system metric such as free memory ratio that can be measured.
|
||||
If the metric value of the system is higher than the value in ``high`` or lower
|
||||
than ``low`` at the memoent, the scheme is deactivated. If the value is lower
|
||||
than ``mid``, the scheme is activated.
|
||||
The directory for the :ref:`watermarks <damon_design_damos_watermarks>` of the
|
||||
given DAMON-based operation scheme.
|
||||
|
||||
Under the watermarks directory, five files (``metric``, ``interval_us``,
|
||||
``high``, ``mid``, and ``low``) for setting each value exist. You can set and
|
||||
``high``, ``mid``, and ``low``) for setting the metric, the time interval
|
||||
between check of the metric, and the three watermarks exist. You can set and
|
||||
get the five values by writing to the files, respectively.
|
||||
|
||||
Keywords and meanings of those that can be written to the ``metric`` file are
|
||||
|
|
@ -367,12 +351,8 @@ The ``interval`` should written in microseconds unit.
|
|||
schemes/<N>/filters/
|
||||
--------------------
|
||||
|
||||
Users could know something more than the kernel for specific types of memory.
|
||||
In the case, users could do their own management for the memory and hence
|
||||
doesn't want DAMOS bothers that. Users could limit DAMOS by setting the access
|
||||
pattern of the scheme and/or the monitoring regions for the purpose, but that
|
||||
can be inefficient in some cases. In such cases, users could set non-access
|
||||
pattern driven filters using files in this directory.
|
||||
The directory for the :ref:`filters <damon_design_damos_filters>` of the given
|
||||
DAMON-based operation scheme.
|
||||
|
||||
In the beginning, this directory has only one file, ``nr_filters``. Writing a
|
||||
number (``N``) to the file creates the number of child directories named ``0``
|
||||
|
|
@ -432,13 +412,17 @@ starting from ``0`` under this directory. Each directory contains files
|
|||
exposing detailed information about each of the memory region that the
|
||||
corresponding scheme's ``action`` has tried to be applied under this directory,
|
||||
during next :ref:`aggregation interval <sysfs_monitoring_attrs>`. The
|
||||
information includes address range, ``nr_accesses``, , and ``age`` of the
|
||||
region.
|
||||
information includes address range, ``nr_accesses``, and ``age`` of the region.
|
||||
|
||||
The directories will be removed when another special keyword,
|
||||
``clear_schemes_tried_regions``, is written to the relevant
|
||||
``kdamonds/<N>/state`` file.
|
||||
|
||||
The expected usage of this directory is investigations of schemes' behaviors,
|
||||
and query-like efficient data access monitoring results retrievals. For the
|
||||
latter use case, in particular, users can set the ``action`` as ``stat`` and
|
||||
set the ``access pattern`` as their interested pattern that they want to query.
|
||||
|
||||
tried_regions/<N>/
|
||||
------------------
|
||||
|
||||
|
|
@ -600,15 +584,10 @@ update.
|
|||
Schemes
|
||||
-------
|
||||
|
||||
For usual DAMON-based data access aware memory management optimizations, users
|
||||
would simply want the system to apply a memory management action to a memory
|
||||
region of a specific access pattern. DAMON receives such formalized operation
|
||||
schemes from the user and applies those to the target processes.
|
||||
|
||||
Users can get and set the schemes by reading from and writing to ``schemes``
|
||||
debugfs file. Reading the file also shows the statistics of each scheme. To
|
||||
the file, each of the schemes should be represented in each line in below
|
||||
form::
|
||||
Users can get and set the DAMON-based operation :ref:`schemes
|
||||
<damon_design_damos>` by reading from and writing to ``schemes`` debugfs file.
|
||||
Reading the file also shows the statistics of each scheme. To the file, each
|
||||
of the schemes should be represented in each line in below form::
|
||||
|
||||
<target access pattern> <action> <quota> <watermarks>
|
||||
|
||||
|
|
@ -617,8 +596,9 @@ You can disable schemes by simply writing an empty string to the file.
|
|||
Target Access Pattern
|
||||
~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
The ``<target access pattern>`` is constructed with three ranges in below
|
||||
form::
|
||||
The target access :ref:`pattern <damon_design_damos_access_pattern>` of the
|
||||
scheme. The ``<target access pattern>`` is constructed with three ranges in
|
||||
below form::
|
||||
|
||||
min-size max-size min-acc max-acc min-age max-age
|
||||
|
||||
|
|
@ -631,9 +611,9 @@ closed interval.
|
|||
Action
|
||||
~~~~~~
|
||||
|
||||
The ``<action>`` is a predefined integer for memory management actions, which
|
||||
DAMON will apply to the regions having the target access pattern. The
|
||||
supported numbers and their meanings are as below.
|
||||
The ``<action>`` is a predefined integer for memory management :ref:`actions
|
||||
<damon_design_damos_action>`. The supported numbers and their meanings are as
|
||||
below.
|
||||
|
||||
- 0: Call ``madvise()`` for the region with ``MADV_WILLNEED``. Ignored if
|
||||
``target`` is ``paddr``.
|
||||
|
|
@ -649,10 +629,8 @@ supported numbers and their meanings are as below.
|
|||
Quota
|
||||
~~~~~
|
||||
|
||||
Optimal ``target access pattern`` for each ``action`` is workload dependent, so
|
||||
not easy to find. Worse yet, setting a scheme of some action too aggressive
|
||||
can cause severe overhead. To avoid such overhead, users can limit time and
|
||||
size quota for the scheme via the ``<quota>`` in below form::
|
||||
Users can set the :ref:`quotas <damon_design_damos_quotas>` of the given scheme
|
||||
via the ``<quota>`` in below form::
|
||||
|
||||
<ms> <sz> <reset interval> <priority weights>
|
||||
|
||||
|
|
@ -662,19 +640,17 @@ the action to memory regions of the ``target access pattern`` within the
|
|||
``<sz>`` bytes of memory regions within the ``<reset interval>``. Setting both
|
||||
``<ms>`` and ``<sz>`` zero disables the quota limits.
|
||||
|
||||
When the quota limit is expected to be exceeded, DAMON prioritizes found memory
|
||||
regions of the ``target access pattern`` based on their size, access frequency,
|
||||
and age. For personalized prioritization, users can set the weights for the
|
||||
three properties in ``<priority weights>`` in below form::
|
||||
For the :ref:`prioritization <damon_design_damos_quotas_prioritization>`, users
|
||||
can set the weights for the three properties in ``<priority weights>`` in below
|
||||
form::
|
||||
|
||||
<size weight> <access frequency weight> <age weight>
|
||||
|
||||
Watermarks
|
||||
~~~~~~~~~~
|
||||
|
||||
Some schemes would need to run based on current value of the system's specific
|
||||
metrics like free memory ratio. For such cases, users can specify watermarks
|
||||
for the condition.::
|
||||
Users can specify :ref:`watermarks <damon_design_damos_watermarks>` of the
|
||||
given scheme via ``<watermarks>`` in below form::
|
||||
|
||||
<metric> <check interval> <high mark> <middle mark> <low mark>
|
||||
|
||||
|
|
@ -797,10 +773,12 @@ root directory only.
|
|||
Tracepoint for Monitoring Results
|
||||
=================================
|
||||
|
||||
DAMON provides the monitoring results via a tracepoint,
|
||||
``damon:damon_aggregated``. While the monitoring is turned on, you could
|
||||
record the tracepoint events and show results using tracepoint supporting tools
|
||||
like ``perf``. For example::
|
||||
Users can get the monitoring results via the :ref:`tried_regions
|
||||
<sysfs_schemes_tried_regions>` or a tracepoint, ``damon:damon_aggregated``.
|
||||
While the tried regions directory is useful for getting a snapshot, the
|
||||
tracepoint is useful for getting a full record of the results. While the
|
||||
monitoring is turned on, you could record the tracepoint events and show
|
||||
results using tracepoint supporting tools like ``perf``. For example::
|
||||
|
||||
# echo on > monitor_on
|
||||
# perf record -e damon:damon_aggregated &
|
||||
|
|
|
|||
68
Documentation/admin-guide/perf/cxl.rst
Normal file
68
Documentation/admin-guide/perf/cxl.rst
Normal file
|
|
@ -0,0 +1,68 @@
|
|||
.. SPDX-License-Identifier: GPL-2.0
|
||||
|
||||
======================================
|
||||
CXL Performance Monitoring Unit (CPMU)
|
||||
======================================
|
||||
|
||||
The CXL rev 3.0 specification provides a definition of CXL Performance
|
||||
Monitoring Unit in section 13.2: Performance Monitoring.
|
||||
|
||||
CXL components (e.g. Root Port, Switch Upstream Port, End Point) may have
|
||||
any number of CPMU instances. CPMU capabilities are fully discoverable from
|
||||
the devices. The specification provides event definitions for all CXL protocol
|
||||
message types and a set of additional events for things commonly counted on
|
||||
CXL devices (e.g. DRAM events).
|
||||
|
||||
CPMU driver
|
||||
===========
|
||||
|
||||
The CPMU driver registers a perf PMU with the name pmu_mem<X>.<Y> on the CXL bus
|
||||
representing the Yth CPMU for memX.
|
||||
|
||||
/sys/bus/cxl/device/pmu_mem<X>.<Y>
|
||||
|
||||
The associated PMU is registered as
|
||||
|
||||
/sys/bus/event_sources/devices/cxl_pmu_mem<X>.<Y>
|
||||
|
||||
In common with other CXL bus devices, the id has no specific meaning and the
|
||||
relationship to specific CXL device should be established via the device parent
|
||||
of the device on the CXL bus.
|
||||
|
||||
PMU driver provides description of available events and filter options in sysfs.
|
||||
|
||||
The "format" directory describes all formats of the config (event vendor id,
|
||||
group id and mask) config1 (threshold, filter enables) and config2 (filter
|
||||
parameters) fields of the perf_event_attr structure. The "events" directory
|
||||
describes all documented events show in perf list.
|
||||
|
||||
The events shown in perf list are the most fine grained events with a single
|
||||
bit of the event mask set. More general events may be enable by setting
|
||||
multiple mask bits in config. For example, all Device to Host Read Requests
|
||||
may be captured on a single counter by setting the bits for all of
|
||||
|
||||
* d2h_req_rdcurr
|
||||
* d2h_req_rdown
|
||||
* d2h_req_rdshared
|
||||
* d2h_req_rdany
|
||||
* d2h_req_rdownnodata
|
||||
|
||||
Example of usage::
|
||||
|
||||
$#perf list
|
||||
cxl_pmu_mem0.0/clock_ticks/ [Kernel PMU event]
|
||||
cxl_pmu_mem0.0/d2h_req_rdshared/ [Kernel PMU event]
|
||||
cxl_pmu_mem0.0/h2d_req_snpcur/ [Kernel PMU event]
|
||||
cxl_pmu_mem0.0/h2d_req_snpdata/ [Kernel PMU event]
|
||||
cxl_pmu_mem0.0/h2d_req_snpinv/ [Kernel PMU event]
|
||||
-----------------------------------------------------------
|
||||
|
||||
$# perf stat -a -e cxl_pmu_mem0.0/clock_ticks/ -e cxl_pmu_mem0.0/d2h_req_rdshared/
|
||||
|
||||
Vendor specific events may also be available and if so can be used via
|
||||
|
||||
$# perf stat -a -e cxl_pmu_mem0.0/vid=VID,gid=GID,mask=MASK/
|
||||
|
||||
The driver does not support sampling so "perf record" is unsupported.
|
||||
It only supports system-wide counting so attaching to a task is
|
||||
unsupported.
|
||||
|
|
@ -56,14 +56,14 @@ Example usage of perf::
|
|||
For HiSilicon uncore PMU v2 whose identifier is 0x30, the topology is the same
|
||||
as PMU v1, but some new functions are added to the hardware.
|
||||
|
||||
(a) L3C PMU supports filtering by core/thread within the cluster which can be
|
||||
1. L3C PMU supports filtering by core/thread within the cluster which can be
|
||||
specified as a bitmap::
|
||||
|
||||
$# perf stat -a -e hisi_sccl3_l3c0/config=0x02,tt_core=0x3/ sleep 5
|
||||
|
||||
This will only count the operations from core/thread 0 and 1 in this cluster.
|
||||
|
||||
(b) Tracetag allow the user to chose to count only read, write or atomic
|
||||
2. Tracetag allow the user to chose to count only read, write or atomic
|
||||
operations via the tt_req parameeter in perf. The default value counts all
|
||||
operations. tt_req is 3bits, 3'b100 represents read operations, 3'b101
|
||||
represents write operations, 3'b110 represents atomic store operations and
|
||||
|
|
@ -73,14 +73,16 @@ represents write operations, 3'b110 represents atomic store operations and
|
|||
|
||||
This will only count the read operations in this cluster.
|
||||
|
||||
(c) Datasrc allows the user to check where the data comes from. It is 5 bits.
|
||||
3. Datasrc allows the user to check where the data comes from. It is 5 bits.
|
||||
Some important codes are as follows:
|
||||
5'b00001: comes from L3C in this die;
|
||||
5'b01000: comes from L3C in the cross-die;
|
||||
5'b01001: comes from L3C which is in another socket;
|
||||
5'b01110: comes from the local DDR;
|
||||
5'b01111: comes from the cross-die DDR;
|
||||
5'b10000: comes from cross-socket DDR;
|
||||
|
||||
- 5'b00001: comes from L3C in this die;
|
||||
- 5'b01000: comes from L3C in the cross-die;
|
||||
- 5'b01001: comes from L3C which is in another socket;
|
||||
- 5'b01110: comes from the local DDR;
|
||||
- 5'b01111: comes from the cross-die DDR;
|
||||
- 5'b10000: comes from cross-socket DDR;
|
||||
|
||||
etc, it is mainly helpful to find that the data source is nearest from the CPU
|
||||
cores. If datasrc_cfg is used in the multi-chips, the datasrc_skt shall be
|
||||
configured in perf command::
|
||||
|
|
@ -88,15 +90,25 @@ configured in perf command::
|
|||
$# perf stat -a -e hisi_sccl3_l3c0/config=0xb9,datasrc_cfg=0xE/,
|
||||
hisi_sccl3_l3c0/config=0xb9,datasrc_cfg=0xF/ sleep 5
|
||||
|
||||
(d)Some HiSilicon SoCs encapsulate multiple CPU and IO dies. Each CPU die
|
||||
4. Some HiSilicon SoCs encapsulate multiple CPU and IO dies. Each CPU die
|
||||
contains several Compute Clusters (CCLs). The I/O dies are called Super I/O
|
||||
clusters (SICL) containing multiple I/O clusters (ICLs). Each CCL/ICL in the
|
||||
SoC has a unique ID. Each ID is 11bits, include a 6-bit SCCL-ID and 5-bit
|
||||
CCL/ICL-ID. For I/O die, the ICL-ID is followed by:
|
||||
5'b00000: I/O_MGMT_ICL;
|
||||
5'b00001: Network_ICL;
|
||||
5'b00011: HAC_ICL;
|
||||
5'b10000: PCIe_ICL;
|
||||
|
||||
- 5'b00000: I/O_MGMT_ICL;
|
||||
- 5'b00001: Network_ICL;
|
||||
- 5'b00011: HAC_ICL;
|
||||
- 5'b10000: PCIe_ICL;
|
||||
|
||||
5. uring_channel: UC PMU events 0x47~0x59 supports filtering by tx request
|
||||
uring channel. It is 2 bits. Some important codes are as follows:
|
||||
|
||||
- 2'b11: count the events which sent to the uring_ext (MATA) channel;
|
||||
- 2'b01: is the same as 2'b11;
|
||||
- 2'b10: count the events which sent to the uring (non-MATA) channel;
|
||||
- 2'b00: default value, count the events which sent to the both uring and
|
||||
uring_ext channel;
|
||||
|
||||
Users could configure IDs to count data come from specific CCL/ICL, by setting
|
||||
srcid_cmd & srcid_msk, and data desitined for specific CCL/ICL by setting
|
||||
|
|
|
|||
|
|
@ -21,3 +21,4 @@ Performance monitor support
|
|||
alibaba_pmu
|
||||
nvidia-pmu
|
||||
meson-ddr-pmu
|
||||
cxl
|
||||
|
|
|
|||
|
|
@ -5,7 +5,7 @@
|
|||
Intel Uncore Frequency Scaling
|
||||
==============================
|
||||
|
||||
:Copyright: |copy| 2022 Intel Corporation
|
||||
:Copyright: |copy| 2022-2023 Intel Corporation
|
||||
|
||||
:Author: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
|
||||
|
||||
|
|
@ -58,3 +58,58 @@ Each package_*_die_* contains the following attributes:
|
|||
|
||||
``current_freq_khz``
|
||||
This attribute is used to get the current uncore frequency.
|
||||
|
||||
SoCs with TPMI (Topology Aware Register and PM Capsule Interface)
|
||||
-----------------------------------------------------------------
|
||||
|
||||
An SoC can contain multiple power domains with individual or collection
|
||||
of mesh partitions. This partition is called fabric cluster.
|
||||
|
||||
Certain type of meshes will need to run at the same frequency, they will
|
||||
be placed in the same fabric cluster. Benefit of fabric cluster is that it
|
||||
offers a scalable mechanism to deal with partitioned fabrics in a SoC.
|
||||
|
||||
The current sysfs interface supports controls at package and die level.
|
||||
This interface is not enough to support more granular control at
|
||||
fabric cluster level.
|
||||
|
||||
SoCs with the support of TPMI (Topology Aware Register and PM Capsule
|
||||
Interface), can have multiple power domains. Each power domain can
|
||||
contain one or more fabric clusters.
|
||||
|
||||
To represent controls at fabric cluster level in addition to the
|
||||
controls at package and die level (like systems without TPMI
|
||||
support), sysfs is enhanced. This granular interface is presented in the
|
||||
sysfs with directories names prefixed with "uncore". For example:
|
||||
uncore00, uncore01 etc.
|
||||
|
||||
The scope of control is specified by attributes "package_id", "domain_id"
|
||||
and "fabric_cluster_id" in the directory.
|
||||
|
||||
Attributes in each directory:
|
||||
|
||||
``domain_id``
|
||||
This attribute is used to get the power domain id of this instance.
|
||||
|
||||
``fabric_cluster_id``
|
||||
This attribute is used to get the fabric cluster id of this instance.
|
||||
|
||||
``package_id``
|
||||
This attribute is used to get the package id of this instance.
|
||||
|
||||
The other attributes are same as presented at package_*_die_* level.
|
||||
|
||||
In most of current use cases, the "max_freq_khz" and "min_freq_khz"
|
||||
is updated at "package_*_die_*" level. This model will be still supported
|
||||
with the following approach:
|
||||
|
||||
When user uses controls at "package_*_die_*" level, then every fabric
|
||||
cluster is affected in that package and die. For example: user changes
|
||||
"max_freq_khz" in the package_00_die_00, then "max_freq_khz" for uncore*
|
||||
directory with the same package id will be updated. In this case user can
|
||||
still update "max_freq_khz" at each uncore* level, which is more restrictive.
|
||||
Similarly, user can update "min_freq_khz" at "package_*_die_*" level
|
||||
to apply at each uncore* level.
|
||||
|
||||
Support for "current_freq_khz" is available only at each fabric cluster
|
||||
level (i.e., in uncore* directory).
|
||||
|
|
|
|||
|
|
@ -949,7 +949,7 @@ user space can read performance monitor counter registers directly.
|
|||
|
||||
The default value is 0 (access disabled).
|
||||
|
||||
See Documentation/arm64/perf.rst for more information.
|
||||
See Documentation/arch/arm64/perf.rst for more information.
|
||||
|
||||
|
||||
pid_max
|
||||
|
|
|
|||
|
|
@ -386,8 +386,8 @@ Default : 0 (for compatibility reasons)
|
|||
txrehash
|
||||
--------
|
||||
|
||||
Controls default hash rethink behaviour on listening socket when SO_TXREHASH
|
||||
option is set to SOCK_TXREHASH_DEFAULT (i. e. not overridden by setsockopt).
|
||||
Controls default hash rethink behaviour on socket when SO_TXREHASH option is set
|
||||
to SOCK_TXREHASH_DEFAULT (i. e. not overridden by setsockopt).
|
||||
|
||||
If set to 1 (default), hash rethink is performed on listening socket.
|
||||
If set to 0, hash rethink is not performed.
|
||||
|
|
|
|||
Some files were not shown because too many files have changed in this diff Show more
Loading…
Add table
Reference in a new issue