Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Jiri Olsa 313ccb9615 perf: Allocate context task_ctx_data for child event ... Currently we use perf_event_context::task_ctx_data to save and restore the LBR status when the task is scheduled out and in. We don't allocate it for child contexts, which results in shorter task's LBR stack, because we don't save the history from previous run and start over every time we schedule the task in. I made a test to generate samples with LBR call stack and got higher numbers on bigger chain depths: before: after: LBR call chain: nr: 1 60561 498127 LBR call chain: nr: 2 0 0 LBR call chain: nr: 3 107030 2172 LBR call chain: nr: 4 466685 62758 LBR call chain: nr: 5 2307319 878046 LBR call chain: nr: 6 48713 495218 LBR call chain: nr: 7 1040 4551 LBR call chain: nr: 8 481 172 LBR call chain: nr: 9 878 120 LBR call chain: nr: 10 2377 6698 LBR call chain: nr: 11 28830 151487 LBR call chain: nr: 12 29347 339867 LBR call chain: nr: 13 4 22 LBR call chain: nr: 14 3 53 Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Fixes: 4af57ef28c ("perf: Add pmu specific data for perf task context") Link: http://lkml.kernel.org/r/20180107160356.28203-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>		2018-01-08 12:26:46 -03:00
..
bpf	bpf: do not allow root to mangle valid pointers	2017-12-21 02:26:29 +01:00
cgroup	Revert "cgroup/cpuset: remove circular dependency deadlock"	2017-12-04 14:55:59 -08:00
configs	ANDROID: binder: add hwbinder,vndbinder to BINDER_DEVICES.	2017-08-22 18:43:23 -07:00
debug	kdb: Fix handling of kallsyms_symbol_next() return value	2017-12-06 16:12:43 -06:00
events	perf: Allocate context task_ctx_data for child event	2018-01-08 12:26:46 -03:00
gcov	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
irq	genirq/msi, x86/vector: Prevent reservation mode for non maskable MSI	2017-12-29 21:13:05 +01:00
livepatch	Merge branch 'for-linus' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching	2017-11-15 10:21:58 -08:00
locking	locking/lockdep: Remove the cross-release locking checks	2017-12-12 12:38:51 +01:00
power	Revert "cpuset: Make cpuset hotplug synchronous"	2017-12-04 14:41:11 -08:00
printk	remove task and stack pointer printout from oops dump	2017-12-05 08:23:20 -08:00
rcu	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-11-13 17:56:58 -08:00
sched	cpufreq: schedutil: Use idle_calls counter of the remote CPU	2017-12-28 12:26:54 +01:00
time	Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-12-31 12:30:34 -08:00
trace	tracing: Fix possible double free on failure of allocating trace buffer	2017-12-27 14:21:27 -05:00
.gitignore
acct.c	kernel/acct.c: fix the acct->needcheck check in check_free_space()	2018-01-04 16:45:09 -08:00
async.c
audit.c	Audit: remove unused audit_log_secctx function	2017-11-10 16:08:47 -05:00
audit.h	audit/stable-4.15 PR 20171113	2017-11-15 13:28:48 -08:00
audit_fsnotify.c
audit_tree.c	Merge branch 'fsnotify' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2017-11-14 14:08:20 -08:00
audit_watch.c
auditfilter.c	audit: filter PATH records keyed on filesystem magic	2017-11-10 16:08:56 -05:00
auditsc.c	audit/stable-4.15 PR 20171113	2017-11-15 13:28:48 -08:00
backtracetest.c
bounds.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
capability.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
compat.c	sched_rr_get_interval(): move compat to native, get rid of set_fs()	2017-09-20 00:30:57 -04:00
configs.c
context_tracking.c
cpu.c	Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-12-31 12:30:34 -08:00
cpu_pm.c
crash_core.c	kdump: print a message in case parse_crashkernel_mem resulted in zero bytes	2017-11-17 16:10:03 -08:00
crash_dump.c
cred.c
delayacct.c
dma.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
elfcore.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
exec_domain.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
exit.c	kernel/exit.c: export abort() to modules	2018-01-04 16:45:09 -08:00
extable.c	kprobes, x86/alternatives: Use text_mutex to protect smp_alt_modules	2017-11-07 12:20:09 +01:00
fork.c	Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-12-23 11:53:04 -08:00
freezer.c
futex.c	futex: futex_wake_op, fix sign_extend32 sign bits	2017-12-10 12:50:57 -08:00
futex_compat.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
groups.c	kernel: make groups_sort calling a responsibility group_info allocators	2017-12-14 16:00:49 -08:00
hung_task.c
irq_work.c	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-11-13 17:33:11 -08:00
jump_label.c	jump_label: Invoke jump_label_test() via early_initcall()	2017-11-14 08:41:41 +01:00
kallsyms.c	kallsyms: take advantage of the new '%px' format	2017-11-29 10:30:13 -08:00
kcmp.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c	kcov: fix comparison callback signature	2017-12-14 16:00:48 -08:00
kexec.c
kexec_core.c
kexec_file.c	resource: Provide resource struct in resource walk callback	2017-11-07 15:35:57 +01:00
kexec_internal.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
kmod.c	kmod: move #ifdef CONFIG_MODULES wrapper to Makefile	2017-09-08 18:26:51 -07:00
kprobes.c	kprobes: Disable the jprobes APIs	2017-10-20 11:02:29 +02:00
ksysfs.c
kthread.c	treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts	2017-11-21 16:35:54 -08:00
latencytop.c
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
memremap.c	memremap: add scheduling point to devm_memremap_pages	2017-10-03 17:54:25 -07:00
module-internal.h
module.c	kallsyms: take advantage of the new '%px' format	2017-11-29 10:30:13 -08:00
module_signing.c
notifier.c
nsproxy.c
padata.c	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
panic.c	kernel/panic.c: add TAINT_AUX	2017-11-17 16:10:04 -08:00
params.c	kernel/params.c: improve STANDARD_PARAM_DEF readability	2017-10-03 17:54:26 -07:00
pid.c	pid: Handle failure to allocate the first pid in a pid namespace	2017-12-23 21:00:09 -06:00
pid_namespace.c	pid: remove pidhash	2017-11-17 16:10:04 -08:00
profile.c
ptrace.c
range.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
reboot.c	kernel/reboot.c: add devm_register_reboot_notifier()	2017-11-17 16:10:04 -08:00
relay.c
resource.c	x86/mm, resource: Use PAGE_KERNEL protection for ioremap of memory pages	2017-11-07 15:35:58 +01:00
seccomp.c	locking/barriers: Convert users of lockless_dereference() to READ_ONCE()	2017-12-17 13:57:15 +01:00
signal.c	Merge branch 'akpm' (patches from Andrew)	2017-11-17 16:56:17 -08:00
smp.c	smp/core: Use lockdep to assert IRQs are disabled/enabled	2017-11-08 11:13:50 +01:00
smpboot.c	watchdog/core, powerpc: Lock cpus across reconfiguration	2017-10-04 10:53:54 +02:00
smpboot.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
softirq.c	kmemcheck: rip it out	2017-11-15 18:21:05 -08:00
stacktrace.c
stop_machine.c
sys.c	arm64 updates for 4.15	2017-11-15 10:56:56 -08:00
sys_ni.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
sysctl.c	kernel/sysctl.c: code cleanups	2017-11-17 16:10:03 -08:00
sysctl_binary.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
task_work.c	locking/barriers: Convert users of lockless_dereference() to READ_ONCE()	2017-12-17 13:57:15 +01:00
taskstats.c
test_kprobes.c	kprobes: Disable the jprobes test code	2017-10-20 11:02:54 +02:00
torture.c
tracepoint.c
tsacct.c
ucount.c
uid16.c	kernel: make groups_sort calling a responsibility group_info allocators	2017-12-14 16:00:49 -08:00
umh.c	kernel/umh.c: optimize 'proc_cap_handler()'	2017-11-17 16:10:01 -08:00
up.c	smp: Avoid using two cache lines for struct call_single_data	2017-08-29 15:14:38 +02:00
user-return-notifier.c
user.c	userns: use union in {g,u}idmap struct	2017-10-31 17:22:58 -05:00
user_namespace.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2017-11-16 12:20:15 -08:00
utsname.c
utsname_sysctl.c
watchdog.c	Merge branch 'linus' into sched/core, to pick up fixes	2017-11-08 10:17:15 +01:00
watchdog_hld.c	Merge branch 'linus' into core/urgent, to pick up dependent commits	2017-11-04 08:53:04 +01:00
workqueue.c	workqueue: remove unneeded kallsyms include	2017-12-11 07:15:43 -08:00
workqueue_internal.h	Merge branch 'for-4.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq	2017-11-06 12:26:49 -08:00