From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, Steven Rostedt <rostedt@goodmis.org>,
Sebastian Siewior <bigeasy@linutronix.de>,
Anna-Maria Gleixner <anna-maria@linutronix.de>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Jiri Olsa <jolsa@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>,
Juergen Gross <jgross@suse.com>
Subject: [patch 04/12] sched: Mark hrtimers to expire in hard interrupt context
Date: Fri, 26 Jul 2019 20:30:52 +0200 [thread overview]
Message-ID: <20190726185753.077004842@linutronix.de> (raw)
In-Reply-To: 20190726183048.982726647@linutronix.de
From: Thomas Gleixner <tglx@linutronix.de>
The scheduler related hrtimers need to expire in hard interrupt context
even on PREEMPT_RT enabled kernels. Mark then as such.
No functional change.
[ tglx: Split out from larger combo patch. Add changelog. ]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
kernel/sched/core.c | 2 +-
kernel/sched/deadline.c | 2 +-
kernel/sched/fair.c | 6 ++++--
kernel/sched/rt.c | 4 ++--
4 files changed, 8 insertions(+), 6 deletions(-)
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -328,7 +328,7 @@ static void hrtick_rq_init(struct rq *rq
rq->hrtick_csd.info = rq;
#endif
- hrtimer_init(&rq->hrtick_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+ hrtimer_init(&rq->hrtick_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD);
rq->hrtick_timer.function = hrtick;
}
#else /* CONFIG_SCHED_HRTICK */
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -1053,7 +1053,7 @@ void init_dl_task_timer(struct sched_dl_
{
struct hrtimer *timer = &dl_se->dl_timer;
- hrtimer_init(timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+ hrtimer_init(timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD);
timer->function = dl_task_timer;
}
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -4972,9 +4972,11 @@ 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);
+ hrtimer_init(&cfs_b->period_timer, CLOCK_MONOTONIC,
+ HRTIMER_MODE_ABS_PINNED_HARD);
cfs_b->period_timer.function = sched_cfs_period_timer;
- hrtimer_init(&cfs_b->slack_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+ hrtimer_init(&cfs_b->slack_timer, CLOCK_MONOTONIC,
+ HRTIMER_MODE_REL_HARD);
cfs_b->slack_timer.function = sched_cfs_slack_timer;
cfs_b->distribute_running = 0;
cfs_b->slack_started = false;
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -45,8 +45,8 @@ void init_rt_bandwidth(struct rt_bandwid
raw_spin_lock_init(&rt_b->rt_runtime_lock);
- hrtimer_init(&rt_b->rt_period_timer,
- CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+ hrtimer_init(&rt_b->rt_period_timer, CLOCK_MONOTONIC,
+ HRTIMER_MODE_REL_HARD);
rt_b->rt_period_timer.function = sched_rt_period_timer;
}
next prev parent reply other threads:[~2019-07-26 19:19 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-26 18:30 [patch 00/12] (hr)timers: Prepare for PREEMPT_RT support Thomas Gleixner
2019-07-26 18:30 ` [patch 01/12] hrtimer: Remove task argument from hrtimer_init_sleeper() Thomas Gleixner
2019-07-26 19:57 ` Steven Rostedt
2019-07-26 20:01 ` Thomas Gleixner
2019-07-30 22:07 ` [tip:timers/core] " tip-bot for Thomas Gleixner
2019-07-26 18:30 ` [patch 02/12] hrtimer: Consolidate hrtimer_init() + hrtimer_init_sleeper() calls Thomas Gleixner
2019-07-30 22:08 ` [tip:timers/core] " tip-bot for Sebastian Andrzej Siewior
2019-08-01 15:49 ` tip-bot for Sebastian Andrzej Siewior
2019-07-26 18:30 ` [patch 03/12] hrtimer: Introduce HARD expiry mode Thomas Gleixner
2019-07-30 22:10 ` [tip:timers/core] " tip-bot for Sebastian Andrzej Siewior
2019-08-01 15:52 ` tip-bot for Sebastian Andrzej Siewior
2019-07-26 18:30 ` Thomas Gleixner [this message]
2019-07-30 22:11 ` [tip:timers/core] sched: Mark hrtimers to expire in hard interrupt context tip-bot for Thomas Gleixner
2019-08-01 15:53 ` tip-bot for Sebastian Andrzej Siewior
2019-08-01 18:58 ` tip-bot for Sebastian Andrzej Siewior
2019-07-26 18:30 ` [patch 05/12] perf/core: " Thomas Gleixner
2019-07-30 22:12 ` [tip:timers/core] " tip-bot for Thomas Gleixner
2019-08-01 15:54 ` tip-bot for Sebastian Andrzej Siewior
2019-08-01 18:59 ` tip-bot for Sebastian Andrzej Siewior
2019-07-26 18:30 ` [patch 06/12] watchdog: Mark watchdog_hrtimer " Thomas Gleixner
2019-07-30 22:13 ` [tip:timers/core] " tip-bot for Sebastian Andrzej Siewior
2019-08-01 15:55 ` tip-bot for Sebastian Andrzej Siewior
2019-08-01 19:00 ` tip-bot for Sebastian Andrzej Siewior
2019-07-26 18:30 ` [patch 07/12] KVM: LAPIC: Mark hrtimer " Thomas Gleixner
2019-07-26 19:41 ` Paolo Bonzini
2019-07-30 22:14 ` [tip:timers/core] " tip-bot for Sebastian Andrzej Siewior
2019-08-01 15:55 ` tip-bot for Sebastian Andrzej Siewior
2019-08-01 19:01 ` tip-bot for Sebastian Andrzej Siewior
2019-07-26 18:30 ` [patch 08/12] tick: Mark tick related hrtimers to expiry " Thomas Gleixner
2019-07-30 22:14 ` [tip:timers/core] " tip-bot for Sebastian Andrzej Siewior
2019-08-01 15:56 ` tip-bot for Sebastian Andrzej Siewior
2019-08-01 19:01 ` tip-bot for Sebastian Andrzej Siewior
2019-07-26 18:30 ` [patch 09/12] hrtimer: Move unmarked hrtimers to soft interrupt expiry on RT Thomas Gleixner
2019-07-30 22:15 ` [tip:timers/core] " tip-bot for Sebastian Andrzej Siewior
2019-08-01 15:57 ` tip-bot for Sebastian Andrzej Siewior
2019-08-01 19:02 ` tip-bot for Sebastian Andrzej Siewior
2019-07-26 18:30 ` [patch 10/12] hrtimer: Determine hard/soft expiry mode for hrtimer sleepers " Thomas Gleixner
2019-07-26 20:44 ` Steven Rostedt
2019-07-26 20:52 ` Thomas Gleixner
2019-07-26 20:56 ` Steven Rostedt
2019-07-26 21:16 ` Julia Cartwright
2019-07-26 21:30 ` Steven Rostedt
2019-07-26 21:35 ` Thomas Gleixner
2019-07-30 22:16 ` [tip:timers/core] " tip-bot for Sebastian Andrzej Siewior
2019-08-01 15:58 ` tip-bot for Sebastian Andrzej Siewior
2019-08-01 19:03 ` tip-bot for Sebastian Andrzej Siewior
2019-07-26 18:30 ` [patch 11/12] hrtimer: Prepare support for PREEMPT_RT Thomas Gleixner
2019-07-28 9:06 ` Juergen Gross
2019-07-29 15:08 ` Steven Rostedt
2019-07-29 17:30 ` Paolo Bonzini
2019-07-31 8:45 ` Juergen Gross
2019-07-30 22:17 ` [tip:timers/core] " tip-bot for Anna-Maria Gleixner
2019-08-01 15:58 ` tip-bot for Anna-Maria Gleixner
2019-08-01 19:04 ` tip-bot for Anna-Maria Gleixner
2019-08-20 13:26 ` Frederic Weisbecker
2019-08-23 2:12 ` [tip: timers/core] hrtimer: Improve comments on handling priority inversion against softirq kthread tip-bot2 for Frederic Weisbecker
2019-07-26 18:31 ` [patch 12/12] timers: Prepare support for PREEMPT_RT Thomas Gleixner
2019-07-30 22:17 ` [tip:timers/core] " tip-bot for Anna-Maria Gleixner
2019-08-01 15:59 ` tip-bot for Anna-Maria Gleixner
2019-08-01 19:04 ` tip-bot for Anna-Maria Gleixner
2019-07-29 19:45 ` [patch 00/12] (hr)timers: Prepare for PREEMPT_RT support Peter Zijlstra
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