Peter Zijlstra 7fce250915 perf: Fix scaling vs. perf_event_enable_on_exec() ... The recent commit 3e349507d1 ("perf: Fix perf_enable_on_exec() event scheduling") caused this by moving task_ctx_sched_out() from before __perf_event_mask_enable() to after it. The overlooked consequence of that change is that task_ctx_sched_out() would update the ctx time fields, and now __perf_event_mask_enable() uses stale time. In order to fix this, explicitly stop our context's time before enabling the event(s). Reported-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: dvyukov@google.com Cc: eranian@google.com Cc: panand@redhat.com Cc: sasha.levin@oracle.com Cc: vince@deater.net Fixes: 3e349507d1 ("perf: Fix perf_enable_on_exec() event scheduling") Link: http://lkml.kernel.org/r/20160224174948.159242158@infradead.org Signed-off-by: Ingo Molnar <mingo@kernel.org>		2016-02-25 08:43:34 +01:00
..
callchain.c	treewide: Remove old email address	2015-11-23 09:44:58 +01:00
core.c	perf: Fix scaling vs. perf_event_enable_on_exec()	2016-02-25 08:43:34 +01:00
hw_breakpoint.c	perf: Collapse and fix event_function_call() users	2016-01-21 18:54:24 +01:00
internal.h	perf: Fix AUX buffer refcounting	2015-07-06 14:08:30 +02:00
Makefile	ftrace: allow architectures to specify ftrace compile options	2015-01-29 09:19:19 +01:00
ring_buffer.c	perf: Synchronously free aux pages in case of allocation failure	2016-01-21 18:54:27 +01:00
uprobes.c	memcg: adjust to support new THP refcounting	2016-01-15 17:56:32 -08:00