From: Alex Shi Date: Thu, 23 Jan 2014 10:39:54 +0000 (+0800) Subject: sched: Add statistic for newidle load balance cost X-Git-Tag: v3.15-rc1~116^2~41 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=37e6bae8395a94b4dd934c92b02b9408be992365;p=platform%2Fkernel%2Flinux-exynos.git 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 Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/52E0F3BF.5020904@linaro.org Signed-off-by: Ingo Molnar --- diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 3068f37..fb9764f 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 31b908d..f3344c3 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);