diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2016-10-03 16:20:59 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-01-14 11:29:32 +0100 |
| commit | 4126bad6717336abe5d666440ae15555563ca53f (patch) | |
| tree | ee77e2345131a33b14065c189bb4aee74554cbec /kernel/sched | |
| parent | 46f69fa33712ad12ccaa723e46ed5929ee93589b (diff) | |
| download | linux-4126bad6717336abe5d666440ae15555563ca53f.tar.bz2 | |
sched/core: Add missing update_rq_clock() in post_init_entity_util_avg()
Address this rq-clock update bug:
WARNING: CPU: 0 PID: 0 at ../kernel/sched/sched.h:797 post_init_entity_util_avg()
rq->clock_update_flags < RQCF_ACT_SKIP
Call Trace:
__warn()
post_init_entity_util_avg()
wake_up_new_task()
_do_fork()
kernel_thread()
rest_init()
start_kernel()
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/core.c | 1 | ||||
| -rw-r--r-- | kernel/sched/fair.c | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 311460b46d68..9217c3221b0d 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2578,6 +2578,7 @@ void wake_up_new_task(struct task_struct *p) __set_task_cpu(p, select_task_rq(p, task_cpu(p), SD_BALANCE_FORK, 0)); #endif rq = __task_rq_lock(p, &rf); + update_rq_clock(rq); post_init_entity_util_avg(&p->se); activate_task(rq, p, 0); diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index faf80e10d662..972b67622922 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -9267,6 +9267,7 @@ void online_fair_sched_group(struct task_group *tg) se = tg->se[i]; raw_spin_lock_irq(&rq->lock); + update_rq_clock(rq); attach_entity_cfs_rq(se); sync_throttle(tg, i); raw_spin_unlock_irq(&rq->lock); |