diff options
| author | Morten Rasmussen <morten.rasmussen@arm.com> | 2015-01-13 13:50:46 +0000 |
|---|---|---|
| committer | Leo Yan <leo.yan@linaro.org> | 2016-05-10 16:49:50 +0800 |
| commit | f0f739d887a4f144ab4937e619288d4cede2cc91 (patch) | |
| tree | 514b7aef24b1a5904260ddcc46c3e1960687e95c /include/linux | |
| parent | 4ce990ec65231af6a148c2c0e6b4745fc1d12368 (diff) | |
sched: Introduce SD_SHARE_CAP_STATES sched_domain flag
cpufreq is currently keeping it a secret which cpus are sharing
clock source. The scheduler needs to know about clock domains as well
to become more energy aware. The SD_SHARE_CAP_STATES domain flag
indicates whether cpus belonging to the sched_domain share capacity
states (P-states).
There is no connection with cpufreq (yet). The flag must be set by
the arch specific topology code.
cc: Russell King <linux@arm.linux.org.uk>
cc: Ingo Molnar <mingo@redhat.com>
cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Morten Rasmussen <morten.rasmussen@arm.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/sched.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 5bee272a86d8..09e2d43406eb 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -989,6 +989,7 @@ extern void wake_up_q(struct wake_q_head *head); #define SD_PREFER_SIBLING 0x1000 /* Prefer to place tasks in a sibling domain */ #define SD_OVERLAP 0x2000 /* sched_domains of this level overlap */ #define SD_NUMA 0x4000 /* cross-node balancing */ +#define SD_SHARE_CAP_STATES 0x8000 /* Domain members share capacity state */ #ifdef CONFIG_SCHED_SMT static inline int cpu_smt_flags(void) |