perf/core: Remove bogus UP_CANCELED hotplug state
authorThomas Gleixner <tglx@linutronix.de>
Tue, 9 Feb 2016 20:11:20 +0000 (20:11 +0000)
committerIngo Molnar <mingo@kernel.org>
Wed, 17 Feb 2016 09:37:28 +0000 (10:37 +0100)
commitb4f75d44bed1bdbb14ac704bfc38f62a3675e591
tree5581e7f971a01c65b66bd2eaf09a09ac75931728
parent8bc9162cd2bf37036c486b384ac445b59b334b04
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>
kernel/events/core.c