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sched/fair: Clean up the __sched_period() code

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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@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1435847152-29543-1-git-send-email-boqun.feng@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Boqun Feng
2015-07-02 22:25:52 +08:00
committed by Ingo Molnar
parent 44dcb04f0e
commit 8e2b0bf397
1 changed files with 4 additions and 9 deletions
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13
kernel/sched/fair.c
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@@ -616,15 +616,10 @@ static inline u64 calc_delta_fair(u64 delta, struct sched_entity *se)
*/ */
static u64 __sched_period(unsigned long nr_running) static u64 __sched_period(unsigned long nr_running)
{ {
u64 period = sysctl_sched_latency; if (unlikely(nr_running > sched_nr_latency))
unsigned long nr_latency = sched_nr_latency; return nr_running * sysctl_sched_min_granularity;
else
if (unlikely(nr_running > nr_latency)) { return sysctl_sched_latency;
period = sysctl_sched_min_granularity;
period *= nr_running;
}
return period;
} }
/* /*