[PATCH 5/5] perf_counter: fix PERF_COUNTER_CONTEXT_SWITCHES for cpu counters

[Peter Zijlstra]

Ingo noticed that cpu counters had 0 context switches, even though there
was plenty scheduling on the cpu.

LKML-Reference: <new-submission>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
---
 kernel/perf_counter.c |    7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

Index: linux-2.6/kernel/perf_counter.c
===================================================================
--- linux-2.6.orig/kernel/perf_counter.c
+++ linux-2.6/kernel/perf_counter.c
@@ -932,14 +932,13 @@ void perf_counter_task_sched_out(struct 
 	struct perf_counter_context *next_ctx;
 	struct pt_regs *regs;
 
+	regs = task_pt_regs(task);
+	perf_swcounter_event(PERF_COUNT_CONTEXT_SWITCHES, 1, 1, regs, 0);
+
 	if (likely(!ctx || !cpuctx->task_ctx))
 		return;
 
 	update_context_time(ctx);
-
-	regs = task_pt_regs(task);
-	perf_swcounter_event(PERF_COUNT_CONTEXT_SWITCHES, 1, 1, regs, 0);
-
 	next_ctx = next->perf_counter_ctxp;
 	if (next_ctx && context_equiv(ctx, next_ctx)) {
 		task->perf_counter_ctxp = next_ctx;

-- 

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