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authorThomas Gleixner <tglx@linutronix.de>2016-02-09 20:11:20 +0000
committerIngo Molnar <mingo@kernel.org>2016-02-17 10:37:28 +0100
commitb4f75d44bed1bdbb14ac704bfc38f62a3675e591 (patch)
tree5581e7f971a01c65b66bd2eaf09a09ac75931728 /kernel/events
parent8bc9162cd2bf37036c486b384ac445b59b334b04 (diff)
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>
Diffstat (limited to 'kernel/events')
-rw-r--r--kernel/events/core.c1
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;