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| author | Avi Kivity <avi@redhat.com> | 2011-06-29 18:42:37 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-07-01 11:06:40 +0200 |
| commit | 26ca5c11fb45ae2b2ac7e3574b8db6b3a3c7d350 (patch) | |
| tree | 01f430828eaacf7ba3e0eb541f8d946f3d855696 /kernel/events | |
| parent | 0af3ac1fdb9d5c297b4b07c9e0172531d42b6716 (diff) | |
| download | lwn-26ca5c11fb45ae2b2ac7e3574b8db6b3a3c7d350.tar.gz lwn-26ca5c11fb45ae2b2ac7e3574b8db6b3a3c7d350.zip | |
perf: export perf_event_refresh() to modules
KVM needs one-shot samples, since a PMC programmed to -X will fire after X
events and then again after 2^40 events (i.e. variable period).
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1309362157-6596-4-git-send-email-avi@redhat.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/events')
| -rw-r--r-- | kernel/events/core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index ba8e0f4a20e6..0567e32d71aa 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -1764,7 +1764,7 @@ out: raw_spin_unlock_irq(&ctx->lock); } -static int perf_event_refresh(struct perf_event *event, int refresh) +int perf_event_refresh(struct perf_event *event, int refresh) { /* * not supported on inherited events @@ -1777,6 +1777,7 @@ static int perf_event_refresh(struct perf_event *event, int refresh) return 0; } +EXPORT_SYMBOL_GPL(perf_event_refresh); static void ctx_sched_out(struct perf_event_context *ctx, struct perf_cpu_context *cpuctx, |