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Commit 37e6bae8 authored by Alex Shi's avatar Alex Shi Committed by Ingo Molnar
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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: default avatarAlex Shi <alex.shi@linaro.org>
Signed-off-by: default avatarPeter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/52E0F3BF.5020904@linaro.org


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 27f17580
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+6 −3
Original line number Diff line number Diff line
@@ -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;
}
+1 −0
Original line number Diff line number Diff line
@@ -321,6 +321,7 @@ do { \
	P(sched_goidle);
#ifdef CONFIG_SMP
	P64(avg_idle);
	P64(max_idle_balance_cost);
#endif

	P(ttwu_count);