diff options
| author | Chris Metcalf <cmetcalf@ezchip.com> | 2015-05-06 18:04:25 +0200 |
|---|---|---|
| committer | Gary S. Robertson <gary.robertson@linaro.org> | 2015-08-19 22:05:01 -0500 |
| commit | ca048fa1b8dfdff1675d33d58c1e2b7a9dc455a0 (patch) | |
| tree | 950662c50890b9b05e97e91b50bf4835a060e33e | |
| parent | f0a3665629bd0e3aa440168b55caea721a77f158 (diff) | |
nohz: Add tick_nohz_full_add_cpus_to() API
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.
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Jones <davej@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Mike Galbraith <umgwanakikbuti@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1429024675-18938-1-git-send-email-cmetcalf@ezchip.com
Link: http://lkml.kernel.org/r/1430928266-24888-4-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
| -rw-r--r-- | include/linux/tick.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/tick.h b/include/linux/tick.h index eda850ca757a..39c641d08bc8 100644 --- a/include/linux/tick.h +++ b/include/linux/tick.h @@ -181,6 +181,12 @@ 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); +} + extern void __tick_nohz_full_check(void); extern void tick_nohz_full_kick(void); extern void tick_nohz_full_kick_cpu(int cpu); @@ -189,6 +195,7 @@ 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_check(void) { } static inline void tick_nohz_full_kick_cpu(int cpu) { } static inline void tick_nohz_full_kick(void) { } |