Akash Goel 59dbb2a06f relay: add global mode support for buffer-only channels ... Commit 20d8b67c06 ("relay: add buffer-only channels; useful for early logging") added support to use channels with no associated files. This is useful when the exact location of relay file is not known or the the parent directory of relay file is not available, while creating the channel and the logging has to start right from the boot. But there was no provision to use global mode with buffer-only channels, which is added by this patch, without modifying the interface where initially there will be a dummy invocation of create_buf_file callback through which kernel client can convey the need of a global buffer. For the use case where drivers/kernel clients want a simple interface for the userspace, which enables them to capture data/logs from relay file inorder & without any post processing, support of Global buffer mode is warranted. Modules, like i915, using relay_open() in early init would have to later register their buffer-only relays, once debugfs is available, by calling relay_late_setup_files(). Hence relay_late_setup_files() symbol also needs to be exported. Link: http://lkml.kernel.org/r/1468404563-11653-1-git-send-email-akash.goel@intel.com Signed-off-by: Akash Goel <akash.goel@intel.com> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2016-08-02 19:35:41 -04:00
..
bpf	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2016-07-27 12:03:20 -07:00
configs
debug	mm/init: Add 'rodata=off' boot cmdline parameter to disable read-only kernel mappings	2016-02-22 08:51:37 +01:00
events	Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-07-29 13:55:30 -07:00
gcov	gcov: add support for gcc version >= 6	2016-07-15 14:54:27 +09:00
irq	genirq: Fix missing irq allocation affinity hint	2016-07-19 10:49:47 +02:00
livepatch	Merge branches 'for-4.7/core', 'for-4.7/livepatching-doc' and 'for-4.7/livepatching-ppc64' into for-linus	2016-05-17 12:06:35 +02:00
locking	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-07-25 12:41:29 -07:00
power	mm, vmscan: move LRU lists to node	2016-07-28 16:07:41 -07:00
printk	printk: add kernel parameter to control writes to /dev/kmsg	2016-08-02 19:35:06 -04:00
rcu	Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-07-29 13:55:30 -07:00
sched	xen: features and fixes for 4.8-rc0	2016-07-27 11:35:37 -07:00
time	Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-07-29 13:55:30 -07:00
trace	This is mostly clean ups and small fixes. Some of the more visible	2016-07-28 18:20:09 -07:00
.gitignore
acct.c
async.c
audit.c	Merge branch 'stable-4.8' of git://git.infradead.org/users/pcmoore/audit	2016-07-29 17:54:17 -07:00
audit.h	Merge branch 'stable-4.8' of git://git.infradead.org/users/pcmoore/audit	2016-07-29 17:54:17 -07:00
audit_fsnotify.c	wrappers for ->i_mutex access	2016-01-22 18:04:28 -05:00
audit_tree.c	audit: cleanup prune_tree_thread	2016-04-04 09:46:47 -04:00
audit_watch.c	don't bother with ->d_inode->i_sb - it's always equal to ->d_sb	2016-04-10 17:11:51 -04:00
auditfilter.c	audit: add fields to exclude filter by reusing user filter	2016-06-27 11:01:00 -04:00
auditsc.c	Merge branch 'stable-4.8' of git://git.infradead.org/users/pcmoore/audit	2016-07-29 17:54:17 -07:00
backtracetest.c
bounds.c
capability.c	kernel: Add noaudit variant of ns_capable()	2016-06-06 20:16:18 +10:00
cgroup.c	Merge branch 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2016-07-29 14:29:04 -07:00
cgroup_freezer.c
cgroup_pids.c	cgroup: Use lld instead of ld when printing pids controller events_limit	2016-06-21 15:03:36 -04:00
compat.c
configs.c
context_tracking.c
cpu.c	timers/core: Correct callback order during CPU hot plug	2016-07-28 18:56:22 +02:00
cpu_pm.c
cpuset.c	cpuset, mm: fix TIF_MEMDIE check in cpuset_change_task_nodemask	2016-07-28 16:07:41 -07:00
crash_dump.c
cred.c	cred: Reject inodes with invalid ids in set_create_file_as()	2016-06-30 18:05:09 -05:00
delayacct.c	kmemcg: account certain kmem allocations to memcg	2016-01-14 16:00:49 -08:00
dma.c
elfcore.c
exec_domain.c
exit.c	kernel/exit.c: quieten greatest stack depth printk	2016-08-02 19:35:23 -04:00
extable.c
fork.c	mm: fix memcg stack accounting for sub-page stacks	2016-07-28 16:07:41 -07:00
freezer.c	freezer, oom: check TIF_MEMDIE on the correct task	2016-07-28 16:07:41 -07:00
futex.c	futex: Calculate the futex key based on a tail page for file-based futexes	2016-06-08 19:23:54 +02:00
futex_compat.c	ptrace: use fsuid, fsgid, effective creds for fs access checks	2016-01-20 17:09:18 -08:00
groups.c
hung_task.c	kernel/hung_task.c: use timeout diff when timeout is updated	2016-03-22 15:36:02 -07:00
irq_work.c
jump_label.c	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-07-25 12:41:29 -07:00
kallsyms.c	kallsyms: add support for relative offsets in kallsyms address table	2016-03-15 16:55:16 -07:00
kcmp.c	ptrace: use fsuid, fsgid, effective creds for fs access checks	2016-01-20 17:09:18 -08:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c	kernel/kcov: unproxify debugfs file's fops	2016-06-15 04:56:35 -07:00
kexec.c	kexec: allow architectures to override boot mapping	2016-08-02 19:35:27 -04:00
kexec_core.c	kexec: add restriction on kexec_load() segment sizes	2016-08-02 19:35:31 -04:00
kexec_file.c	kexec: introduce a protection mechanism for the crashkernel reserved memory	2016-05-23 17:04:14 -07:00
kexec_internal.h	kexec: move some memembers and definitions within the scope of CONFIG_KEXEC_FILE	2016-01-20 17:09:18 -08:00
kmod.c
kprobes.c
ksysfs.c	kexec: add a kexec_crash_loaded() function	2016-08-02 19:35:30 -04:00
kthread.c
latencytop.c	sched/debug: Make schedstats a runtime tunable that is disabled by default	2016-02-09 11:54:23 +01:00
Makefile	ELF/MIPS build fix	2016-05-23 17:04:14 -07:00
membarrier.c
memremap.c	libnvdimm for 4.8	2016-07-28 17:38:16 -07:00
module-internal.h
module.c	dynamic_debug: only add header when used	2016-08-02 19:35:03 -04:00
module_signing.c	KEYS: Move the point of trust determination to __key_link()	2016-04-11 22:43:43 +01:00
notifier.c
nsproxy.c	cgroup: introduce cgroup namespaces	2016-02-16 13:04:58 -05:00
padata.c	kernel/padata.c: hide unused functions	2016-05-19 19:12:14 -07:00
panic.c	kexec: use core_param for crash_kexec_post_notifiers boot option	2016-08-02 19:35:29 -04:00
params.c
pid.c	remove lots of IS_ERR_VALUE abuses	2016-05-27 15:26:11 -07:00
pid_namespace.c
profile.c	profile: Convert to hotplug state machine	2016-07-15 10:41:42 +02:00
ptrace.c	ptrace: change __ptrace_unlink() to clear ->ptrace under ->siglock	2016-03-22 15:36:02 -07:00
range.c
reboot.c
relay.c	relay: add global mode support for buffer-only channels	2016-08-02 19:35:41 -04:00
resource.c	/proc/iomem: only expose physical resource addresses to privileged users	2016-04-14 12:56:09 -07:00
seccomp.c	seccomp: recheck the syscall after RET_TRACE	2016-06-14 10:54:41 -07:00
signal.c	signals: Use hrtimer for sigtimedwait()	2016-07-07 10:35:07 +02:00
smp.c	Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-07-29 13:55:30 -07:00
smpboot.c	cpu/hotplug: Unpark smpboot threads from the state machine	2016-03-01 20:36:56 +01:00
smpboot.h	cpu/hotplug: Create hotplug threads	2016-03-01 20:36:56 +01:00
softirq.c	arch, ftrace: for KASAN put hard/soft IRQ entries into separate sections	2016-03-25 16:37:42 -07:00
stacktrace.c
stop_machine.c	stop_machine: Touch_nmi_watchdog() after MULTI_STOP_PREPARE	2016-07-27 11:12:11 +02:00
sys.c	prctl: make PR_SET_THP_DISABLE wait for mmap_sem killable	2016-05-23 17:04:14 -07:00
sys_ni.c
sysctl.c	printk: add kernel parameter to control writes to /dev/kmsg	2016-08-02 19:35:06 -04:00
sysctl_binary.c	kernel/sysctl_binary.c: use generic UUID library	2016-05-20 17:58:30 -07:00
task_work.c	task_work: use READ_ONCE/lockless_dereference, avoid pi_lock if !task_works	2016-08-02 19:35:02 -04:00
taskstats.c	taskstats: use the libnl API to align nlattr on 64-bit	2016-04-23 20:13:25 -04:00
test_kprobes.c
torture.c	torture: Stop onoff task if there is only one cpu	2016-06-14 16:03:28 -07:00
tracepoint.c	kernel/...: convert pr_warning to pr_warn	2016-03-22 15:36:02 -07:00
tsacct.c	time, acct: Drop irq save & restore from __acct_update_integrals()	2016-02-29 09:53:09 +01:00
uid16.c
up.c
user-return-notifier.c
user.c
user_namespace.c	fs: Limit file caps to the user namespace of the super block	2016-06-24 10:40:31 -05:00
utsname.c
utsname_sysctl.c
watchdog.c	Revert "perf/x86/intel, watchdog: Switch NMI watchdog to ref cycles on x86"	2016-07-10 20:58:36 +02:00
workqueue.c	Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-07-29 13:55:30 -07:00
workqueue_internal.h	sched/core: Get rid of 'cpu' argument in wq_worker_sleeping()	2016-03-02 10:28:47 -05:00