Commit-ID: 72f669c0086fbbbbebc92ce7390125722c4c0ec5
Gitweb: http://git.kernel.org/tip/72f669c0086fbbbbebc92ce7390125722c4c0ec5
Author: Shaohua Li <shli@xxxxxx>
AuthorDate: Thu, 5 Feb 2015 15:55:31 -0800
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Wed, 18 Feb 2015 17:01:44 +0100
perf: Update shadow timestamp before add event
Update the shadow timestamp before start event, because .add might
use the timestamp.
Signed-off-by: Shaohua Li <shli@xxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Link: http://lkml.kernel.org/r/9cd0276d6a047cb7c2885994f25e3a1f7c8c28af.1423180257.git.shli@xxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
kernel/events/core.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 13209a9..e580e0f 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -1881,6 +1881,10 @@ event_sched_in(struct perf_event *event,
perf_pmu_disable(event->pmu);
+ event->tstamp_running += tstamp - event->tstamp_stopped;
+
+ perf_set_shadow_time(event, ctx, tstamp);
+
if (event->pmu->add(event, PERF_EF_START)) {
event->state = PERF_EVENT_STATE_INACTIVE;
event->oncpu = -1;
@@ -1888,10 +1892,6 @@ event_sched_in(struct perf_event *event,
goto out;
}
- event->tstamp_running += tstamp - event->tstamp_stopped;
-
- perf_set_shadow_time(event, ctx, tstamp);
-
if (!is_software_event(event))
cpuctx->active_oncpu++;
if (!ctx->nr_active++)
--
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