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linux/include/linux
Linus Torvalds 9269d27e51 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
2021-06-28 12:22:06 -07:00
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