Bernhard Walle cba63c3089 Extended crashkernel command line ... This patch adds a extended crashkernel syntax that makes the value of reserved system RAM dependent on the system RAM itself: crashkernel=<range1>:<size1>[,<range2>:<size2>,...][@offset] range=start-[end] For example: crashkernel=512M-2G:64M,2G-:128M The motivation comes from distributors that configure their crashkernel command line automatically with some configuration tool (YaST, you know ;)). Of course that tool knows the value of System RAM, but if the user removes RAM, then the system becomes unbootable or at least unusable and error handling is very difficult. This series implements this change for i386, x86_64, ia64, ppc64 and sh. That should be all platforms that support kdump in current mainline. I tested all platforms except sh due to the lack of a sh processor. This patch: This is the generic part of the patch. It adds a parse_crashkernel() function in kernel/kexec.c that is called by the architecture specific code that actually reserves the memory. That function takes the whole command line and looks itself for "crashkernel=" in it. If there are multiple occurrences, then the last one is taken. The advantage is that if you have a bootloader like lilo or elilo which allows you to append a command line parameter but not to remove one (like in GRUB), then you can add another crashkernel value for testing at the boot command line and this one overwrites the command line in the configuration then. Signed-off-by: Bernhard Walle <bwalle@suse.de> Cc: Andi Kleen <ak@suse.de> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Vivek Goyal <vgoyal@in.ibm.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2007-10-19 11:53:49 -07:00
..
amba
byteorder
dvb
hdlc
isdn
lockd
mlx4
mmc
mtd
netfilter	[NETFILTER]: xt_sctp: fix mistake to pass a pointer where array is required	2007-10-18 05:12:21 -07:00
netfilter_arp
netfilter_bridge
netfilter_ipv4
netfilter_ipv6
nfsd
raid
rtc
spi
ssb
sunrpc
tc_act
tc_ematch
usb
8250_pci.h
a.out.h
ac97_codec.h
acct.h
acpi.h
acpi_pmtmr.h
adb.h
adfs_fs.h
adfs_fs_i.h
adfs_fs_sb.h
aer.h
affs_hardblocks.h
agp_backend.h
agpgart.h
aio.h	Remove struct task_struct::io_wait	2007-10-18 14:37:20 -07:00
aio_abi.h
amifd.h
amifdreg.h
amigaffs.h
anon_inodes.h
apm-emulation.h
apm_bios.h
arcdevice.h
arcfb.h
async_tx.h
ata.h
atalk.h
atm.h
atm_eni.h
atm_he.h
atm_idt77105.h
atm_nicstar.h
atm_suni.h
atm_tcp.h
atm_zatm.h
atmapi.h
atmarp.h
atmbr2684.h
atmclip.h
atmdev.h
atmel-ssc.h
atmel_pdc.h
atmioc.h
atmlec.h
atmmpc.h
atmppp.h
atmsap.h
atmsvc.h
attribute_container.h
audit.h
auto_fs.h
auto_fs4.h
auxvec.h
ax25.h
b1lli.h
b1pcmcia.h
backing-dev.h
backlight.h
baycom.h
bcd.h
bfs_fs.h
binfmts.h
bio.h
bit_spinlock.h	bit_spin_lock: use lock bitops	2007-10-18 14:37:29 -07:00
bitmap.h	remove BITS_TO_TYPE macro	2007-10-19 11:53:42 -07:00
bitops.h	remove BITS_TO_TYPE macro	2007-10-19 11:53:42 -07:00
bitrev.h
blkdev.h
blkpg.h
blktrace_api.h
blockgroup_lock.h
bootmem.h
bottom_half.h
bpqether.h
bsg.h
buffer_head.h
bug.h
cache.h
calc64.h
capability.h	V3 file capabilities: alter behavior of cap_setpcap	2007-10-18 14:37:24 -07:00
capi.h
cciss_ioctl.h
cd1400.h
cdev.h
cdk.h
cdrom.h
cfag12864b.h
cgroup.h	Add cgroupstats	2007-10-19 11:53:36 -07:00
cgroup_subsys.h	cgroups: implement namespace tracking subsystem	2007-10-19 11:53:37 -07:00
cgroupstats.h	Add cgroupstats	2007-10-19 11:53:36 -07:00
chio.h
circ_buf.h
clk.h
clockchips.h
clocksource.h	Fix discrepancy between VDSO based gettimeofday() and sys_gettimeofday().	2007-10-18 14:37:20 -07:00
cm4000_cs.h
cn_proc.h
coda.h
coda_cache.h
coda_fs_i.h
coda_linux.h
coda_psdev.h
coff.h
com20020.h
compat.h
compiler-gcc.h	Replace __attribute_pure__ with __pure	2007-10-18 14:37:32 -07:00
compiler-gcc3.h
compiler-gcc4.h
compiler-intel.h
compiler.h	Replace __attribute_pure__ with __pure	2007-10-18 14:37:32 -07:00
completion.h
comstats.h
concap.h
configfs.h
connector.h
console.h	serial: turn serial console suspend a boot rather than compile time option	2007-10-18 14:37:19 -07:00
console_struct.h
consolemap.h
const.h
cpu.h	Redefine {un}register_hotcpu_notifier() !HOTPLUG_CPU stubs	2007-10-18 14:37:28 -07:00
cpu_acct.h	Task Control Groups: example CPU accounting subsystem	2007-10-19 11:53:36 -07:00
cpufreq.h
cpumask.h
cpuset.h	hotplug cpu: migrate a task within its cpuset	2007-10-19 11:53:44 -07:00
cramfs_fs.h
cramfs_fs_sb.h
crash_dump.h
crc-ccitt.h
crc-itu-t.h
crc7.h
crc16.h
crc32.h
crc32c.h
crypto.h
cryptohash.h
ctype.h
cuda.h
cyclades.h	Char: cyclades, fix some -W warnings	2007-10-18 14:37:26 -07:00
cyclomx.h
cycx_cfm.h
cycx_drv.h
cycx_x25.h
dca.h
dcache.h
dccp.h
dcookies.h
debug_locks.h
debugfs.h
delay.h
delayacct.h	Add cgroupstats	2007-10-19 11:53:36 -07:00
device-mapper.h
device.h
devpts_fs.h
dio.h
dirent.h
display.h
dlm.h
dlm_device.h
dlm_netlink.h
dm-ioctl.h
dm9000.h
dma-mapping.h	stop using DMA_xxBIT_MASK	2007-10-18 14:37:21 -07:00
dmaengine.h
dmapool.h
dmi.h
dn.h
dnotify.h
dqblk_v1.h
dqblk_v2.h
dqblk_xfs.h
ds1wm.h
ds1286.h
ds17287rtc.h
dtlk.h
edac.h
edd.h
eeprom_93cx6.h
efi.h
efs_dir.h
efs_fs.h
efs_fs_i.h
efs_fs_sb.h
efs_vh.h
eisa.h
elevator.h
elf-em.h
elf-fdpic.h
elf.h
elfcore-compat.h
elfcore.h
elfnote.h
err.h
errno.h
errqueue.h
etherdevice.h
ethtool.h
eventfd.h
eventpoll.h
exportfs.h
ext2_fs.h
ext2_fs_sb.h
ext3_fs.h	ext3: support large blocksize up to PAGESIZE	2007-10-18 14:37:29 -07:00
ext3_fs_i.h
ext3_fs_sb.h
ext3_jbd.h
ext4_fs.h	ext4: Convert s_r_blocks_count and s_free_blocks_count	2007-10-17 18:50:02 -04:00
ext4_fs_extents.h	ext4: Convert ext4_extent_idx.ei_leaf to ext4_extent_idx.ei_leaf_lo	2007-10-17 18:50:03 -04:00
ext4_fs_i.h	ext4: Remove (partial, never completed) fragment support	2007-10-17 18:49:59 -04:00
ext4_fs_sb.h	ext4: Remove (partial, never completed) fragment support	2007-10-17 18:49:59 -04:00
ext4_jbd2.h	jbd2: JBD_XXX to JBD2_XXX naming cleanup	2007-10-17 18:49:58 -04:00
fadvise.h
falloc.h
fault-inject.h
fb.h
fcdevice.h
fcntl.h
fd.h
fd1772.h
fddidevice.h
fdreg.h
fib_rules.h
file.h
filter.h	[NET]: Introduce the sk_detach_filter() call	2007-10-17 21:21:26 -07:00
firewire-cdev.h
firewire-constants.h
firmware.h
flat.h
font.h
freezer.h	freezer: introduce freezer-friendly waiting macros	2007-10-18 14:37:19 -07:00
fs.h	pid namespaces: introduce MS_KERNMOUNT flag	2007-10-19 11:53:38 -07:00
fs_enet_pd.h
fs_stack.h
fs_struct.h
fs_uart_pd.h
fsl_devices.h
fsnotify.h
fuse.h	fuse: add blksize field to fuse_attr	2007-10-18 14:37:31 -07:00
futex.h
gameport.h
gen_stats.h
genalloc.h
generic_acl.h
generic_serial.h
genetlink.h
genhd.h
getcpu.h
gfp.h
gfs2_ondisk.h
gigaset_dev.h
gpio_keys.h
gpio_mouse.h
hardirq.h
harrier_defs.h
hash.h
hayesesp.h
hdlc.h
hdlcdrv.h
hdpu_features.h
hdreg.h
hdsmart.h
hid-debug.h
hid.h	get rid of input BIT* duplicate defines	2007-10-19 11:53:42 -07:00
hiddev.h
hidraw.h
highmem.h
highuid.h
hil.h
hil_mlc.h
hippidevice.h
hp_sdc.h
hpet.h
hrtimer.h	hrtimer: Rework hrtimer_nanosleep to make sys_compat_nanosleep easier	2007-10-18 22:54:18 +02:00
htirq.h
hugetlb.h
hw_random.h
hwmon-sysfs.h
hwmon-vid.h
hwmon.h
hysdn_if.h
i2c-algo-bit.h
i2c-algo-pca.h
i2c-algo-pcf.h
i2c-algo-sgi.h
i2c-dev.h
i2c-gpio.h
i2c-id.h
i2c-ocores.h
i2c-pnx.h
i2c-pxa.h
i2c.h
i2o-dev.h
i2o.h
i8k.h
ibmtr.h
icmp.h
icmpv6.h
ide.h	ide: add IDE_HFLAG_LEGACY_IRQS host flag	2007-10-19 00:30:11 +02:00
idr.h
ieee80211.h
if.h
if_addr.h
if_arcnet.h
if_arp.h
if_bonding.h
if_bridge.h
if_cablemodem.h
if_ec.h
if_eql.h
if_ether.h
if_fc.h
if_fddi.h
if_frad.h
if_hippi.h
if_infiniband.h
if_link.h
if_ltalk.h
if_macvlan.h
if_packet.h
if_plip.h
if_ppp.h
if_pppol2tp.h
if_pppox.h
if_shaper.h
if_slip.h
if_strip.h
if_tr.h
if_tun.h
if_tunnel.h
if_vlan.h
if_wanpipe.h
igmp.h
in.h
in6.h
in_route.h
inet.h
inet_diag.h
inet_lro.h
inetdevice.h
init.h
init_task.h	Isolate the explicit usage of signal->pgrp	2007-10-19 11:53:43 -07:00
initrd.h
inotify.h
input-polldev.h
input.h	get rid of input BIT* duplicate defines	2007-10-19 11:53:42 -07:00
interrupt.h
io.h
ioc3.h
ioc4.h
ioctl.h
ioport.h
ioprio.h
ip.h
ip6_tunnel.h
ipc.h	virtualization of sysv msg queues is incomplete	2007-10-19 11:53:48 -07:00
ipmi.h	IPMI: add polled interface	2007-10-18 14:37:32 -07:00
ipmi_msgdefs.h
ipmi_smi.h	IPMI: add 0.9 support	2007-10-18 14:37:32 -07:00
ipsec.h
ipv6.h
ipv6_route.h
ipx.h
irda.h
irq.h
irq_cpustat.h
irqflags.h
irqreturn.h
isa.h
isapnp.h
isdn.h
isdn_divertif.h
isdn_ppp.h
isdnif.h
isicom.h
iso_fs.h
istallion.h
ivtv.h
ivtvfb.h
ixjuser.h
jbd.h	jbd: config_jbd_debug cannot create /proc entry	2007-10-19 11:53:35 -07:00
jbd2.h	jbd2: JBD_XXX to JBD2_XXX naming cleanup	2007-10-17 18:49:58 -04:00
jffs2.h
jhash.h
jiffies.h
journal-head.h
joystick.h
kallsyms.h
kbd_diacr.h
kbd_kern.h
Kbuild	Add cgroupstats	2007-10-19 11:53:36 -07:00
kd.h
kdebug.h
kdev_t.h
kernel.h
kernel_stat.h	Add scaled time to taskstats based process accounting	2007-10-18 14:37:28 -07:00
kernelcapi.h
kexec.h	Extended crashkernel command line	2007-10-19 11:53:49 -07:00
key-type.h
key-ui.h
key.h
keyboard.h	Console keyboard events and accessibility	2007-10-19 11:53:33 -07:00
keyctl.h
kfifo.h
klist.h
kmalloc_sizes.h
kmod.h
kobj_map.h
kobject.h
kprobes.h
kref.h
ks0108.h
kthread.h
ktime.h
kvm.h
kvm_para.h
lapb.h
latency.h
lcd.h
leds.h
lguest.h
lguest_bus.h
lguest_launcher.h
libata.h	[libata] kill ata_sg_is_last()	2007-10-18 16:21:18 -04:00
libps2.h
license.h
limits.h
linkage.h
linux_logo.h
list.h	kernel-api docbook: fix content problems	2007-10-19 11:53:35 -07:00
llc.h
lm_interface.h
lock_dlm_plock.h
lockdep.h	workqueue: debug flushing deadlocks with lockdep	2007-10-19 11:53:38 -07:00
log2.h
loop.h
lp.h
lzo.h
m41t00.h
m48t86.h
magic.h	Task Control Groups: basic task cgroup framework	2007-10-19 11:53:36 -07:00
major.h
maple.h
matroxfb.h
mbcache.h
mc6821.h
mc146818rtc.h
mca-legacy.h
mca.h
mdio-bitbang.h
memory.h
memory_hotplug.h
mempolicy.h	Task Control Groups: make cpusets a client of cgroups	2007-10-19 11:53:36 -07:00
mempool.h
meye.h
migrate.h
mii.h
minix_fs.h
miscdevice.h
mm.h
mm_inline.h
mm_types.h
mman.h
mmtimer.h
mmzone.h
mnt_namespace.h
mod_devicetable.h
module.h
moduleloader.h
moduleparam.h
mount.h
mpage.h
mqueue.h
mroute.h
msdos_fs.h
msg.h	ipc: store ipcs into IDRs	2007-10-19 11:53:44 -07:00
msi.h
mtio.h
mutex-debug.h
mutex.h
mv643xx.h
n_r3964.h
namei.h
nbd.h
ncp.h
ncp_fs.h
ncp_fs_i.h
ncp_fs_sb.h
ncp_mount.h
ncp_no.h
neighbour.h
net.h
netdevice.h	Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6	2007-10-18 19:31:54 -07:00
netfilter.h
netfilter_arp.h
netfilter_bridge.h
netfilter_decnet.h
netfilter_ipv4.h
netfilter_ipv6.h
netlink.h
netpoll.h
netrom.h
nfs.h
nfs2.h
nfs3.h
nfs4.h
nfs4_acl.h
nfs4_mount.h
nfs_fs.h
nfs_fs_i.h
nfs_fs_sb.h
nfs_idmap.h
nfs_mount.h
nfs_page.h
nfs_xdr.h
nfsacl.h
nfsd_idmap.h
nl80211.h
nls.h
nmi.h
node.h
nodemask.h
notifier.h	Console events and accessibility	2007-10-19 11:53:34 -07:00
nsc_gpio.h
nsproxy.h	Make access to task's nsproxy lighter	2007-10-19 11:53:37 -07:00
nubus.h
numa.h
nvram.h
of.h	remove asm/bitops.h includes	2007-10-19 11:53:41 -07:00
of_device.h
of_platform.h	[SPARC/64]: Consolidate of_register_driver	2007-10-17 21:17:42 -07:00
oom.h
oprofile.h
page-flags.h
page-isolation.h
pageblock-flags.h
pagemap.h
pagevec.h
param.h
parport.h	sysctl: parport remove binary paths	2007-10-18 14:37:23 -07:00
parport_pc.h
parser.h
pata_platform.h
patchkey.h
pci-acpi.h
pci.h
pci_hotplug.h
pci_ids.h
pci_regs.h
pcieport_if.h
pda_power.h
percpu.h
percpu_counter.h
personality.h
pfkeyv2.h
pfn.h
pg.h
phantom.h	Misc: phantom, improved data passing	2007-10-19 11:53:41 -07:00
phonedev.h
phy.h
phy_fixed.h
pid.h	Uninline find_pid etc set of functions	2007-10-19 11:53:41 -07:00
pid_namespace.h	pid namespaces: miscellaneous preparations for pid namespaces	2007-10-19 11:53:39 -07:00
pipe_fs_i.h
pkt_cls.h
pkt_sched.h
pktcdvd.h
platform_device.h
plist.h
pm.h	PM: Move definition of struct pm_ops to suspend.h	2007-10-18 14:37:18 -07:00
pm_legacy.h
pmu.h
pnp.h
pnpbios.h
poison.h	jbd2: JBD_XXX to JBD2_XXX naming cleanup	2007-10-17 18:49:58 -04:00
poll.h
posix-timers.h
posix_acl.h
posix_acl_xattr.h
posix_types.h
power_supply.h
ppdev.h
ppp-comp.h
ppp_channel.h
ppp_defs.h
prctl.h
preempt.h
prefetch.h
prio_heap.h	Fix cpusets update_cpumask	2007-10-19 11:53:41 -07:00
prio_tree.h
proc_fs.h	pid namespaces: initialize the namespace's proc_mnt	2007-10-19 11:53:40 -07:00
profile.h
proportions.h
ps2esdi.h
ptrace.h
qnx4_fs.h
qnxtypes.h
quicklist.h
quota.h
quotaio_v1.h
quotaio_v2.h
quotaops.h
radeonfb.h
radix-tree.h
raid_class.h
ramfs.h
random.h
raw.h
rbtree.h
rcupdate.h
reboot.h
reciprocal_div.h
reiserfs_acl.h
reiserfs_fs.h	Use helpers to obtain task pid in printks	2007-10-19 11:53:43 -07:00
reiserfs_fs_i.h
reiserfs_fs_sb.h	reiserfs: remove first_zero_hint	2007-10-19 11:53:35 -07:00
reiserfs_xattr.h
relay.h
resource.h
resume-trace.h
rfkill.h
rio.h
rio_drv.h
rio_ids.h
rio_regs.h
rmap.h
romfs_fs.h
root_dev.h
rose.h
route.h
rslib.h
rtc-v3020.h
rtc.h
rtmutex.h
rtnetlink.h
rwsem-spinlock.h
rwsem.h
rxrpc.h
sc26198.h
scatterlist.h
scc.h
sched.h	Isolate the explicit usage of signal->pgrp	2007-10-19 11:53:43 -07:00
screen_info.h
sctp.h
scx200.h
scx200_gpio.h
sdla.h
seccomp.h
securebits.h
security.h	V3 file capabilities: alter behavior of cap_setpcap	2007-10-18 14:37:24 -07:00
selection.h
selinux.h
selinux_netlink.h
sem.h	ipc: store ipcs into IDRs	2007-10-19 11:53:44 -07:00
seq_file.h
seqlock.h
serial.h
serial167.h
serial_8250.h
serial_core.h
serial_pnx8xxx.h
serial_reg.h
serialP.h
serio.h
shm.h	ipc: store ipcs into IDRs	2007-10-19 11:53:44 -07:00
shmem_fs.h
signal.h
signalfd.h
skbuff.h
slab.h
slab_def.h
slob_def.h
slub_def.h
sm501-regs.h
sm501.h
smb.h
smb_fs.h
smb_fs_i.h
smb_fs_sb.h
smb_mount.h
smbno.h
smp.h
smp_lock.h
snmp.h
socket.h
sockios.h
som.h
sonet.h
sony-laptop.h
sonypi.h
sort.h
sound.h
soundcard.h
spinlock.h
spinlock_api_smp.h
spinlock_api_up.h
spinlock_types.h
spinlock_types_up.h
spinlock_up.h
splice.h
srcu.h
stacktrace.h
stallion.h
start_kernel.h
stat.h
statfs.h
stddef.h
stop_machine.h
string.h
stringify.h
superhyway.h
suspend.h	Hibernation: Check if ACPI is enabled during restore in the right place	2007-10-18 14:37:20 -07:00
svga.h
swap.h
swapops.h
synclink.h
sys.h
syscalls.h
sysctl.h	sysctl: Error on bad sysctl tables	2007-10-18 14:37:23 -07:00
sysdev.h
sysfs.h
sysrq.h
sysv_fs.h
task_io_accounting.h
task_io_accounting_ops.h
taskstats.h	add-scaled-time-to-taskstats-based-process-accounting fix	2007-10-18 14:37:28 -07:00
taskstats_kern.h
tc.h
tcp.h
telephony.h
termios.h
textsearch.h
textsearch_fsm.h
tfrc.h
thread_info.h
threads.h
ticable.h
tick.h
tifm.h
time.h
timer.h
timerfd.h
times.h
timex.h
tiocl.h
tipc.h
tipc_config.h
topology.h
toshiba.h
transport_class.h
trdevice.h
tsacct_kern.h
tty.h
tty_driver.h
tty_flip.h
tty_ldisc.h
types.h	define first set of BIT* macros	2007-10-19 11:53:42 -07:00
uaccess.h
udf_fs.h
udf_fs_i.h
udf_fs_sb.h
udp.h
ufs_fs.h
uinput.h	get rid of input BIT* duplicate defines	2007-10-19 11:53:42 -07:00
uio.h
uio_driver.h
ultrasound.h
un.h
unistd.h
unwind.h
usb.h
usb_usual.h
usbdevice_fs.h
user.h
user_namespace.h
utime.h
uts.h
utsname.h
vermagic.h
vfs.h
via.h
video_decoder.h
video_encoder.h
video_output.h
videodev.h
videodev2.h
videotext.h
vmalloc.h
vmstat.h
vt.h	Console events and accessibility	2007-10-19 11:53:34 -07:00
vt_buffer.h
vt_kern.h
wait.h
wanrouter.h
watchdog.h
wireless.h
workqueue.h	workqueue: debug flushing deadlocks with lockdep	2007-10-19 11:53:38 -07:00
writeback.h
x25.h
xattr.h
xfrm.h
xilinxfb.h
yam.h
zconf.h
zlib.h
zorro.h
zorro_ids.h
zutil.h