From: Sebastian Andrzej Siewior Date: Tue, 8 Jan 2019 12:31:06 +0100 Subject: [PATCH] sched/fair: Make the hrtimers non-hard again Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.25-rt16.tar.xz Since commit "sched/fair: Robustify CFS-bandwidth timer locking" both hrtimer can run in softirq context because now interrupts are disabled as part of the locking procedure. Signed-off-by: Sebastian Andrzej Siewior --- kernel/sched/fair.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -4879,9 +4879,9 @@ void init_cfs_bandwidth(struct cfs_bandw cfs_b->period = ns_to_ktime(default_cfs_period()); INIT_LIST_HEAD(&cfs_b->throttled_cfs_rq); - hrtimer_init(&cfs_b->period_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_PINNED_HARD); + hrtimer_init(&cfs_b->period_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_PINNED); cfs_b->period_timer.function = sched_cfs_period_timer; - hrtimer_init(&cfs_b->slack_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD); + hrtimer_init(&cfs_b->slack_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); cfs_b->slack_timer.function = sched_cfs_slack_timer; cfs_b->distribute_running = 0; }