Commit-ID: 42d1c60e15ff89150a3b3537fec579f8a8f36a8a
Gitweb: http://git.kernel.org/tip/42d1c60e15ff89150a3b3537fec579f8a8f36a8a
Author: Boqun Feng <boqun.feng@xxxxxxxxx>
AuthorDate: Thu, 2 Jul 2015 22:25:52 +0800
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Mon, 6 Jul 2015 15:29:56 +0200
sched/fair: Clean up the __sched_period() code
Since commit:
4bf0b77158 ("sched: remove do_div() from __sched_slice()")
... the logic of __sched_period() can be implemented as a single if-else
without any local variables, so this patch cleans it up with an if-else
statement, which expresses the function's logic straightforwardly.
Signed-off-by: Boqun Feng <boqun.feng@xxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Srikar Dronamraju <srikar@xxxxxxxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1435847152-29543-1-git-send-email-boqun.feng@xxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
kernel/sched/fair.c | 13 ++++---------
1 file changed, 4 insertions(+), 9 deletions(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index a53a610..03ea05b 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -616,15 +616,10 @@ static inline u64 calc_delta_fair(u64 delta, struct sched_entity *se)
*/
static u64 __sched_period(unsigned long nr_running)
{
- u64 period = sysctl_sched_latency;
- unsigned long nr_latency = sched_nr_latency;
-
- if (unlikely(nr_running > nr_latency)) {
- period = sysctl_sched_min_granularity;
- period *= nr_running;
- }
-
- return period;
+ if (unlikely(nr_running > sched_nr_latency))
+ return nr_running * sysctl_sched_min_granularity;
+ else
+ return sysctl_sched_latency;
}
/*
--
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