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@chello.nl>
---
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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