perf_counter: fix warning & lockup
- remove bogus warning
- fix wakeup from NMI path lockup
- also fix up whitespace noise in perf_counter.h
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
LKML-Reference: <20090525153931.703093461@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c
index ec9c4007..070f92d 100644
--- a/kernel/perf_counter.c
+++ b/kernel/perf_counter.c
@@ -2576,7 +2576,7 @@
.time = sched_clock(),
};
- ret = perf_output_begin(&handle, counter, sizeof(throttle_event), 0, 0);
+ ret = perf_output_begin(&handle, counter, sizeof(throttle_event), 1, 0);
if (ret)
return;
@@ -3449,8 +3449,6 @@
struct perf_counter_context *child_ctx;
unsigned long flags;
- WARN_ON_ONCE(child != current);
-
child_ctx = child->perf_counter_ctxp;
if (likely(!child_ctx))