diff options
author | Morten Rasmussen <Morten.Rasmussen@arm.com> | 2012-09-14 14:38:16 +0100 |
---|---|---|
committer | Viresh Kumar <viresh.kumar@linaro.org> | 2013-02-11 10:38:20 +0530 |
commit | 7ca60409df65257ce5d523c3b628890ca0a000ed (patch) | |
tree | daf9fb29cb1ad2462c330e89ade53b626cbf5edf /kernel/sched/fair.c | |
parent | 615801a01b44b557b925d34c1bdb50251c4d4665 (diff) |
sched: Add HMP task migration ftrace event
Adds ftrace event for tracing task migrations using HMP
optimized scheduling.
Signed-off-by: Morten Rasmussen <Morten.Rasmussen@arm.com>
Diffstat (limited to 'kernel/sched/fair.c')
-rw-r--r-- | kernel/sched/fair.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 3d378453df0..ab234c7a103 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -3557,10 +3557,16 @@ unlock: rcu_read_unlock(); #ifdef CONFIG_SCHED_HMP - if (hmp_up_migration(prev_cpu, &p->se)) - return hmp_select_faster_cpu(p, prev_cpu); - if (hmp_down_migration(prev_cpu, &p->se)) - return hmp_select_slower_cpu(p, prev_cpu); + if (hmp_up_migration(prev_cpu, &p->se)) { + new_cpu = hmp_select_faster_cpu(p, prev_cpu); + trace_sched_hmp_migrate(p, new_cpu, 0); + return new_cpu; + } + if (hmp_down_migration(prev_cpu, &p->se)) { + new_cpu = hmp_select_slower_cpu(p, prev_cpu); + trace_sched_hmp_migrate(p, new_cpu, 0); + return new_cpu; + } /* Make sure that the task stays in its previous hmp domain */ if (!cpumask_test_cpu(new_cpu, &hmp_cpu_domain(prev_cpu)->cpus)) return prev_cpu; @@ -6051,6 +6057,7 @@ static void hmp_force_up_migration(int this_cpu) target->push_cpu = hmp_select_faster_cpu(p, cpu); target->migrate_task = p; force = 1; + trace_sched_hmp_migrate(p, target->push_cpu, 1); } } raw_spin_unlock_irqrestore(&target->lock, flags); |