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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-28 12:22:06 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-28 12:22:06 -0700 |
| commit | 9269d27e519ae9a89be8d288f59d1ec573b0c686 (patch) | |
| tree | 9a5b0e9ec71e8fe4e87b6f6beae9ecfe3e527a4e /include/linux/sched.h | |
| parent | 54a728dc5e4feb0a9278ad62b19f34ad21ed0ee4 (diff) | |
| parent | 09fe880ed7a160ebbffb84a0a9096a075e314d2f (diff) | |
Merge tag 'timers-nohz-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timers/nohz updates from Ingo Molnar:
- Micro-optimize tick_nohz_full_cpu()
- Optimize idle exit tick restarts to be less eager
- Optimize tick_nohz_dep_set_task() to only wake up a single CPU.
This reduces IPIs and interruptions on nohz_full CPUs.
- Optimize tick_nohz_dep_set_signal() in a similar fashion.
- Skip IPIs in tick_nohz_kick_task() when trying to kick a
non-running task.
- Micro-optimize tick_nohz_task_switch() IRQ flags handling to
reduce context switching costs.
- Misc cleanups and fixes
* tag 'timers-nohz-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
MAINTAINERS: Add myself as context tracking maintainer
tick/nohz: Call tick_nohz_task_switch() with interrupts disabled
tick/nohz: Kick only _queued_ task whose tick dependency is updated
tick/nohz: Change signal tick dependency to wake up CPUs of member tasks
tick/nohz: Only wake up a single target cpu when kicking a task
tick/nohz: Update nohz_full Kconfig help
tick/nohz: Update idle_exittime on actual idle exit
tick/nohz: Remove superflous check for CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
tick/nohz: Conditionally restart tick on idle exit
tick/nohz: Evaluate the CPU expression after the static key
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 31aaf9d7b3e9..ec8d07d88641 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2028,6 +2028,8 @@ static inline void set_task_cpu(struct task_struct *p, unsigned int cpu) #endif /* CONFIG_SMP */ +extern bool sched_task_on_rq(struct task_struct *p); + /* * In order to reduce various lock holder preemption latencies provide an * interface to see if a vCPU is currently running or not. |