perf/x86/intel: Simplify put_exclusive_constraints()

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Don't bother with taking locks if we're not actually going to do
anything. Also, drop the _irqsave(), this is very much only called
from IRQ-disabled context.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

...

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Peter Zijlstra 2015-05-22 11:36:13 +02:00 • committed by Ingo Molnar

parent 8736e548db

commit ba040653b4

1 changed files with 15 additions and 14 deletions

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arch/x86/kernel/cpu/perf_event_intel.c

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