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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2010-05-25 10:48:51 +0200
committerIngo Molnar <mingo@elte.hu>2010-06-09 10:34:49 +0200
commitc676329abb2b8359d9a5d734dec0c81779823fd6 (patch)
treeb6c33715176221a87100228399c2a6f5049e44ea /kernel/rcutorture.c
parent95ae3c59fa8ad616c73745e21154b5af0fb10168 (diff)
downloadlinux-c676329abb2b8359d9a5d734dec0c81779823fd6.tar.bz2
sched_clock: Add local_clock() API and improve documentation
For people who otherwise get to write: cpu_clock(smp_processor_id()), there is now: local_clock(). Also, as per suggestion from Andrew, provide some documentation on the various clock interfaces, and minimize the unsigned long long vs u64 mess. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Jens Axboe <jaxboe@fusionio.com> LKML-Reference: <1275052414.1645.52.camel@laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/rcutorture.c')
-rw-r--r--kernel/rcutorture.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
index 6535ac8bc6a5..2e2726d790b9 100644
--- a/kernel/rcutorture.c
+++ b/kernel/rcutorture.c
@@ -239,8 +239,7 @@ static unsigned long
rcu_random(struct rcu_random_state *rrsp)
{
if (--rrsp->rrs_count < 0) {
- rrsp->rrs_state +=
- (unsigned long)cpu_clock(raw_smp_processor_id());
+ rrsp->rrs_state += (unsigned long)local_clock();
rrsp->rrs_count = RCU_RANDOM_REFRESH;
}
rrsp->rrs_state = rrsp->rrs_state * RCU_RANDOM_MULT + RCU_RANDOM_ADD;