Messages in this thread Patch in this message | | | From | Chris Metcalf <> | Subject | [PATCH v8 1/2] nohz: add tick_nohz_full_add_cpus_to() API | Date | Tue, 14 Apr 2015 11:17:54 -0400 |
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This API is useful to modify a cpumask indicating some special nohz-type functionality so that the nohz cores are automatically added to that set.
Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com> --- v8: Just include _add_cpus_to() in this patch set [Frederic] Add Frederic's Ack
v7: no change here, just in part 2/2.
v6: I think we may finally have accessor names that are OK
v5: (skipped this patch)
v4: update accessor names to make them clearer [PeterZ]
v3: no change here, just in part 2/2.
v2: put the "...set_cpus" API together with the change to init_sched_domains() so that they can go into the timer tree independently of other changes in my tree.
include/linux/tick.h | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/include/linux/tick.h b/include/linux/tick.h index ce655084ffe3..8d1754c0f694 100644 --- a/include/linux/tick.h +++ b/include/linux/tick.h @@ -186,6 +186,12 @@ static inline bool tick_nohz_full_cpu(int cpu) return cpumask_test_cpu(cpu, tick_nohz_full_mask); } +static inline void tick_nohz_full_add_cpus_to(struct cpumask *mask) +{ + if (tick_nohz_full_enabled()) + cpumask_or(mask, mask, tick_nohz_full_mask); +} + static inline void tick_nohz_full_remove_cpus_from(struct cpumask *mask) { if (tick_nohz_full_enabled()) @@ -200,6 +206,7 @@ extern void __tick_nohz_task_switch(struct task_struct *tsk); #else static inline bool tick_nohz_full_enabled(void) { return false; } static inline bool tick_nohz_full_cpu(int cpu) { return false; } +static inline void tick_nohz_full_add_cpus_to(struct cpumask *mask) { } static inline void tick_nohz_full_remove_cpus_from(struct cpumask *mask) { } static inline void __tick_nohz_full_check(void) { } static inline void tick_nohz_full_kick_cpu(int cpu) { } -- 2.1.2
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