diff options
| author | Morten Rasmussen <morten.rasmussen@arm.com> | 2015-01-02 17:08:52 +0000 |
|---|---|---|
| committer | Robin Randhawa <robin.randhawa@arm.com> | 2015-04-09 12:26:13 +0100 |
| commit | b1ce261ab0e1eae95cfee5da460b55fa6a1a154e (patch) | |
| tree | abafebd9d493a618a4428b3fe94c1fd6dfae4ec0 | |
| parent | 00895743ca591446a82cbc44ec6daa91612b4224 (diff) | |
sched: Highest energy aware balancing sched_domain level pointer
Add another member to the family of per-cpu sched_domain shortcut
pointers. This one, sd_ea, points to the highest level at which energy
model is provided. At this level and all levels below all sched_groups
have energy model data attached.
cc: Ingo Molnar <mingo@redhat.com>
cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Morten Rasmussen <morten.rasmussen@arm.com>
| -rw-r--r-- | kernel/sched/core.c | 11 | ||||
| -rw-r--r-- | kernel/sched/sched.h | 1 |
2 files changed, 11 insertions, 1 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 17c02cc1f10a..12cb272dc607 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -4760,6 +4760,7 @@ DEFINE_PER_CPU(int, sd_llc_size); DEFINE_PER_CPU(int, sd_llc_id); DEFINE_PER_CPU(struct sched_domain *, sd_busy); DEFINE_PER_CPU(struct sched_domain *, sd_asym); +DEFINE_PER_CPU(struct sched_domain *, sd_ea); #ifdef CONFIG_NUMA_BALANCING DEFINE_PER_CPU(struct sched_domain *, sd_numa); #endif @@ -4767,7 +4768,7 @@ DEFINE_PER_CPU(struct sched_domain *, sd_numa); static void update_top_cache_domain(int cpu) { struct sched_domain *sd; - struct sched_domain *busy_sd = NULL; + struct sched_domain *busy_sd = NULL, *ea_sd = NULL; int id = cpu; int size = 1; @@ -4790,6 +4791,14 @@ static void update_top_cache_domain(int cpu) sd = highest_flag_domain(cpu, SD_ASYM_PACKING); rcu_assign_pointer(per_cpu(sd_asym, cpu), sd); + + for_each_domain(cpu, sd) { + if (sd->groups->sge) + ea_sd = sd; + else + break; + } + rcu_assign_pointer(per_cpu(sd_ea, cpu), ea_sd); } /* diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 880583a11c87..e49cb6b85b90 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -602,6 +602,7 @@ DECLARE_PER_CPU(int, sd_llc_id); DECLARE_PER_CPU(struct sched_domain *, sd_numa); DECLARE_PER_CPU(struct sched_domain *, sd_busy); DECLARE_PER_CPU(struct sched_domain *, sd_asym); +DECLARE_PER_CPU(struct sched_domain *, sd_ea); struct sched_group_capacity { atomic_t ref; |