Messages in this thread Patch in this message | | | From | Morten Rasmussen <> | Subject | [RFCv3 PATCH 29/48] sched: Highest energy aware balancing sched_domain level pointer | Date | Wed, 4 Feb 2015 18:31:06 +0000 |
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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> --- kernel/sched/core.c | 11 ++++++++++- kernel/sched/sched.h | 1 + 2 files changed, 11 insertions(+), 1 deletion(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index c49f3ee..e47febf 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -5741,11 +5741,12 @@ DEFINE_PER_CPU(int, sd_llc_id); DEFINE_PER_CPU(struct sched_domain *, sd_numa); DEFINE_PER_CPU(struct sched_domain *, sd_busy); DEFINE_PER_CPU(struct sched_domain *, sd_asym); +DEFINE_PER_CPU(struct sched_domain *, sd_ea); 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; @@ -5766,6 +5767,14 @@ 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 86cf6b2..dedf0ec 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -793,6 +793,7 @@ 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; -- 1.9.1
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