diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2013-11-28 19:31:23 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-01-13 15:13:11 +0100 |
| commit | ef08f0fff87630d4f67ceb09514d8b444df833f8 (patch) | |
| tree | be33021d329f9f2780ed8eac7cb8acb19a56a1b4 /kernel/trace/ring_buffer.c | |
| parent | 20d1c86a57762f0a33a78988e3fc8818316badd4 (diff) | |
sched/clock: Remove local_irq_disable() from the clocks
Now that x86 no longer requires IRQs disabled for sched_clock() and
ia64 never had this requirement (it doesn't seem to do cpufreq at
all), we can remove the requirement of disabling IRQs.
MAINLINE PRE POST
sched_clock_stable: 1 1 1
(cold) sched_clock: 329841 257223 221876
(cold) local_clock: 301773 309889 234692
(warm) sched_clock: 38375 25280 25602
(warm) local_clock: 100371 85268 33265
(warm) rdtsc: 27340 24247 24214
sched_clock_stable: 0 0 0
(cold) sched_clock: 382634 301224 235941
(cold) local_clock: 396890 399870 297017
(warm) sched_clock: 38194 25630 25233
(warm) local_clock: 143452 129629 71234
(warm) rdtsc: 27345 24307 24245
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/n/tip-36e5kohiasnr106d077mgubp@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/trace/ring_buffer.c')
0 files changed, 0 insertions, 0 deletions