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| author | Alex Shi <alex.shi@linaro.org> | 2014-01-23 18:39:54 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-02-11 09:58:18 +0100 |
| commit | 37e6bae8395a94b4dd934c92b02b9408be992365 (patch) | |
| tree | 212a4ad2745dd3322ec3cd4f5e4392718b6f3324 | |
| parent | 27f17580fd2c7514c8f5cce22ab903c6f3ddf458 (diff) | |
| download | linux-stable-37e6bae8395a94b4dd934c92b02b9408be992365.tar.gz linux-stable-37e6bae8395a94b4dd934c92b02b9408be992365.tar.bz2 linux-stable-37e6bae8395a94b4dd934c92b02b9408be992365.zip | |
sched: Add statistic for newidle load balance cost
Tracking rq->max_idle_balance_cost and sd->max_newidle_lb_cost.
It's useful to know these values in debug mode.
Signed-off-by: Alex Shi <alex.shi@linaro.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/52E0F3BF.5020904@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
| -rw-r--r-- | kernel/sched/core.c | 9 | ||||
| -rw-r--r-- | kernel/sched/debug.c | 1 |
2 files changed, 7 insertions, 3 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 3068f37f7c5f..fb9764fbc537 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -4811,7 +4811,7 @@ set_table_entry(struct ctl_table *entry, static struct ctl_table * sd_alloc_ctl_domain_table(struct sched_domain *sd) { - struct ctl_table *table = sd_alloc_ctl_entry(13); + struct ctl_table *table = sd_alloc_ctl_entry(14); if (table == NULL) return NULL; @@ -4839,9 +4839,12 @@ sd_alloc_ctl_domain_table(struct sched_domain *sd) sizeof(int), 0644, proc_dointvec_minmax, false); set_table_entry(&table[10], "flags", &sd->flags, sizeof(int), 0644, proc_dointvec_minmax, false); - set_table_entry(&table[11], "name", sd->name, + set_table_entry(&table[11], "max_newidle_lb_cost", + &sd->max_newidle_lb_cost, + sizeof(long), 0644, proc_doulongvec_minmax, false); + set_table_entry(&table[12], "name", sd->name, CORENAME_MAX_SIZE, 0444, proc_dostring, false); - /* &table[12] is terminator */ + /* &table[13] is terminator */ return table; } diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c index 31b908daaa1b..f3344c31632a 100644 --- a/kernel/sched/debug.c +++ b/kernel/sched/debug.c @@ -321,6 +321,7 @@ do { \ P(sched_goidle); #ifdef CONFIG_SMP P64(avg_idle); + P64(max_idle_balance_cost); #endif P(ttwu_count); |