* [PATCH v2] sched/fair: avoid !CONFIG_SMP cpufreq update callbacks for !root cfs_rq
@ 2016-06-27 11:33 Jisheng Zhang
0 siblings, 0 replies; only message in thread
From: Jisheng Zhang @ 2016-06-27 11:33 UTC (permalink / raw)
To: mingo, peterz; +Cc: linux-kernel, Jisheng Zhang
This is to avoid cpufreq update callbacks for for !root cgroups when
!CONFIG_SMP
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
---
Since v1:
-fix commit msg, now I really know what the check is for, thank Peter
kernel/sched/fair.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index bdcbeea..236ec5b 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -3121,7 +3121,8 @@ static inline void update_load_avg(struct sched_entity *se, int not_used)
struct cfs_rq *cfs_rq = cfs_rq_of(se);
struct rq *rq = rq_of(cfs_rq);
- cpufreq_trigger_update(rq_clock(rq));
+ if (&rq->cfs == cfs_rq)
+ cpufreq_trigger_update(rq_clock(rq));
}
static inline void
--
2.8.1
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