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| author | Peter Zijlstra <peterz@infradead.org> | 2017-12-21 10:11:09 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-03-09 07:59:16 +0100 |
| commit | b7031a02ec753bf9b52a94a966b05e1abad3b7a9 (patch) | |
| tree | 0a5d1d9105bce0a900850e6704e808d345751668 /kernel/sched/sched.h | |
| parent | a22e47a4e3f5a9e50a827c5d94705ace3b1eac0b (diff) | |
| download | op-kernel-dev-b7031a02ec753bf9b52a94a966b05e1abad3b7a9.zip op-kernel-dev-b7031a02ec753bf9b52a94a966b05e1abad3b7a9.tar.gz | |
sched/fair: Add NOHZ_STATS_KICK
Split the NOHZ idle balancer into doing two separate actions:
- update blocked load statistic
- actually load-balance
Since the latter requires the former, ensure this happens. For now
always tag both bits at the same time.
Prepares for a future where we can toggle only the STATS bit.
Suggested-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/sched.h')
| -rw-r--r-- | kernel/sched/sched.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index d98e761..5295f27 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -2036,9 +2036,13 @@ extern void cfs_bandwidth_usage_dec(void); #ifdef CONFIG_NO_HZ_COMMON #define NOHZ_TICK_STOPPED_BIT 0 #define NOHZ_BALANCE_KICK_BIT 1 +#define NOHZ_STATS_KICK_BIT 2 #define NOHZ_TICK_STOPPED BIT(NOHZ_TICK_STOPPED_BIT) #define NOHZ_BALANCE_KICK BIT(NOHZ_BALANCE_KICK_BIT) +#define NOHZ_STATS_KICK BIT(NOHZ_STATS_KICK_BIT) + +#define NOHZ_KICK_MASK (NOHZ_BALANCE_KICK | NOHZ_STATS_KICK) #define nohz_flags(cpu) (&cpu_rq(cpu)->nohz_flags) |
