diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2019-11-08 14:15:59 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-11-11 08:35:20 +0100 |
| commit | 2eeb01a28c9233333bf229a5b4b0559f4bd22b52 (patch) | |
| tree | 8fb28519a2281d9e75d3131e02d165ea4f2e7eb6 /kernel/sched/fair.c | |
| parent | 98c2f700edb413e4baa4a0368c5861d96211a775 (diff) | |
| download | lwn-2eeb01a28c9233333bf229a5b4b0559f4bd22b52.tar.gz lwn-2eeb01a28c9233333bf229a5b4b0559f4bd22b52.zip | |
sched/fair: Use mul_u32_u32()
While reading the code I encountered another site where we should be
using mul_u32_u32() because GCC just won't take a hint.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: bsegall@google.com
Cc: dietmar.eggemann@arm.com
Cc: juri.lelli@redhat.com
Cc: ktkhai@virtuozzo.com
Cc: mgorman@suse.de
Cc: qais.yousef@arm.com
Cc: qperret@google.com
Cc: rostedt@goodmis.org
Cc: valentin.schneider@arm.com
Cc: vincent.guittot@linaro.org
Link: https://lkml.kernel.org/r/20191108131909.717931380@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/fair.c')
| -rw-r--r-- | kernel/sched/fair.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 1789193d9917..ba97d1a1b976 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -229,8 +229,7 @@ static u64 __calc_delta(u64 delta_exec, unsigned long weight, struct load_weight } } - /* hint to use a 32x32->64 mul */ - fact = (u64)(u32)fact * lw->inv_weight; + fact = mul_u32_u32(fact, lw->inv_weight); while (fact >> 32) { fact >>= 1; |