perf: Simplify task_clock_event_read()
There is no point in us having different code paths for nmi and !nmi
here, so remove the !nmi one.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index dadeaea..64a018e 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -5810,16 +5810,9 @@
static void task_clock_event_read(struct perf_event *event)
{
- u64 time;
-
- if (!in_nmi()) {
- update_context_time(event->ctx);
- time = event->ctx->time;
- } else {
- u64 now = perf_clock();
- u64 delta = now - event->ctx->timestamp;
- time = event->ctx->time + delta;
- }
+ u64 now = perf_clock();
+ u64 delta = now - event->ctx->timestamp;
+ u64 time = event->ctx->time + delta;
task_clock_event_update(event, time);
}