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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2015-07-17 22:25:49 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2016-03-02 16:44:27 +0100 |
| commit | b78783000d5cb7c5994e6742e1d1ce594bfea15b (patch) | |
| tree | 8f4468e342ae4e25efb9679e6d93db02f3f0ec6a /include | |
| parent | 76d92ac305f23cada3a9b3c48a7ccea5f71019cb (diff) | |
| download | linux-0-day-b78783000d5cb7c5994e6742e1d1ce594bfea15b.tar.gz linux-0-day-b78783000d5cb7c5994e6742e1d1ce594bfea15b.tar.xz | |
posix-cpu-timers: Migrate to use new tick dependency mask model
Instead of providing asynchronous checks for the nohz subsystem to verify
posix cpu timers tick dependency, migrate the latter to the new mask.
In order to keep track of the running timers and expose the tick
dependency accordingly, we must probe the timers queuing and dequeuing
on threads and process lists.
Unfortunately it implies both task and signal level dependencies. We
should be able to further optimize this and merge all that on the task
level dependency, at the cost of a bit of complexity and may be overhead.
Reviewed-by: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/posix-timers.h | 3 | ||||
| -rw-r--r-- | include/linux/tick.h | 2 |
2 files changed, 0 insertions, 5 deletions
diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h index 907f3fd191aca..62d44c1760718 100644 --- a/include/linux/posix-timers.h +++ b/include/linux/posix-timers.h @@ -128,9 +128,6 @@ void posix_cpu_timer_schedule(struct k_itimer *timer); void run_posix_cpu_timers(struct task_struct *task); void posix_cpu_timers_exit(struct task_struct *task); void posix_cpu_timers_exit_group(struct task_struct *task); - -bool posix_cpu_timers_can_stop_tick(struct task_struct *tsk); - void set_process_cpu_timer(struct task_struct *task, unsigned int clock_idx, cputime_t *newval, cputime_t *oldval); diff --git a/include/linux/tick.h b/include/linux/tick.h index 0e63db4bc662e..21f73649a4dc5 100644 --- a/include/linux/tick.h +++ b/include/linux/tick.h @@ -234,7 +234,6 @@ static inline void tick_dep_clear_signal(struct signal_struct *signal, } extern void tick_nohz_full_kick_cpu(int cpu); -extern void tick_nohz_full_kick_all(void); extern void __tick_nohz_task_switch(void); #else static inline int housekeeping_any_cpu(void) @@ -259,7 +258,6 @@ static inline void tick_dep_clear_signal(struct signal_struct *signal, enum tick_dep_bits bit) { } static inline void tick_nohz_full_kick_cpu(int cpu) { } -static inline void tick_nohz_full_kick_all(void) { } static inline void __tick_nohz_task_switch(void) { } #endif |