Tick_nohz_stop_sched_tick
WebbThis is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s).mirroring instructions for how to clone and mirror all data and code used for … WebbInterrupt exit is the place to stop the tick: it happens after all events happening before and during the irq which are liable to update the dependency on the tick occurred. However, …
Tick_nohz_stop_sched_tick
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WebbTherefore no local assumption can be made + * and everything must be accessed through the @rq and @curr passed in + * parameters. + */ static void task_tick_rt(struct rq *rq, struct task_struct *p, int queued) { struct sched_rt_entity *rt_se = &p->rt; diff--git a/kernel/sched/sched.h b/kernel/sched/sched.h index fb5fc458..c1c7c78 100644 --- … WebbIf the task is alone in the runqueue or is the highest priority, the tick will fire once then eventually stop. But that alone is still undesired noise. Therefore, only restart the tick on …
WebbThis happens when the remote tick applies on an idle task. Usually the idle_cpu() check avoids that, but it is performed before we lock the runqueue and it is therefore racy. It … Webbtick_nohz_irq_exit再次调用了tick_nohz_stop_sched_tick函数，使得系统有机会再次停止周期时钟若干个tick周期。 2.3 动态时钟：重新开启周期tick时钟事件 回到图2.3.1，当 …
Webb[v5,2/2] tick/sched: Ensure quiet_vmstat() is called when the idle tick was stopped too Message ID [email protected] ( mailing list archive ) WebbLKML Archive on lore.kernel.org help / color / mirror / Atom feed From: Yunfeng Ye To: , , , Cc: Shiyuan Hu , Hewenliang Subject: [PATCH] …
Webbnext prev parent reply other threads:[~2024-02-15 0:49 UTC newest] Thread overview: 18+ messages / expand[flat nested] mbox.gz Atom feed top 2024-02-15 0:48 [PATCH 0/6] … holland 716059Webb6 juli 2024 · > Currently, can_stop_idle_tick() prints "NOHZ: local_softirq_pending HH" > (where "HH" is the hexadecimal softirq vector number) when one or more > non-RCU … humane society of greater portland meWebbPrevent that by adding a check for a pending timer soft interrupt to the conditions in tick_nohz_stop_sched_tick() which avoid calling get_next_timer_interrupt(). That keeps … holland 7Webbtick/nohz: Prevent stopping the tick on an offline CPU can_stop_full_tick() has no check for offline cpus. So it allows to stop the tick on an offline cpu from the interrupt return path, … humane society of greater kansas city addressWebbStopping the Tick Not always as simple as hrtimer_cancel(&ts->sched_timer) ... jiffie update responsibility clocksource's max_idle_ns (timekeeping max deferment) Details in tick_nohz_stop_sched_tick() FI G. Tick Broadcast For when your clockevents FAIL AT LIFE i.e., they don't work during some CPU idle low power modes Indicated by CLOCK_EVT ... humane society of griffin \u0026 spalding countyWebbLKML Archive on lore.kernel.org help / color / mirror / Atom feed * [RFC PATCH] tick/sched: Ensure quiet_vmstat() is called when the idle tick was stopped too @ 2024-02-03 21:43 Aaron Tomlin 2024-02-03 22:22 ` Phil Auld 2024-02-17 12:47 ` Frederic Weisbecker 0 siblings, 2 replies; 21+ messages in thread From: Aaron Tomlin @ 2024-02-03 21:43 UTC … humane society of greater dayton catsWebbstopped whereas a timer can still be enqueued. Indeed there is no tick reprogramming in local_bh_enable(). We probably asssumed there was no bh disabled section in idle, although there didn't seem to be debug code ensuring that. Nowadays the nesting interrupt optimization still stands but only concern humane society of greater kansas