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| author | Thomas Gleixner <tglx@linutronix.de> | 2016-02-09 20:11:20 +0000 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-02-17 10:37:28 +0100 |
| commit | b4f75d44bed1bdbb14ac704bfc38f62a3675e591 (patch) | |
| tree | 5581e7f971a01c65b66bd2eaf09a09ac75931728 | |
| parent | 8bc9162cd2bf37036c486b384ac445b59b334b04 (diff) | |
| download | linux-b4f75d44bed1bdbb14ac704bfc38f62a3675e591.tar.gz linux-b4f75d44bed1bdbb14ac704bfc38f62a3675e591.tar.bz2 linux-b4f75d44bed1bdbb14ac704bfc38f62a3675e591.zip | |
perf/core: Remove bogus UP_CANCELED hotplug state
If CPU_UP_PREPARE fails the perf hotplug code calls perf_event_exit_cpu(),
which is a pointless exercise. The cpu is not online, so the smp function
calls return -ENXIO. So the result is a list walk to call noops.
Remove it.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/20160209201007.682184765@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
| -rw-r--r-- | kernel/events/core.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 5946460b2425..474ffeafe363 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -9286,7 +9286,6 @@ perf_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu) perf_event_init_cpu(cpu); break; - case CPU_UP_CANCELED: case CPU_DOWN_PREPARE: perf_event_exit_cpu(cpu); break; |