Commit b9889ed1 authored by Ingo Molnar's avatar Ingo Molnar

sched: Remove forced2_migrations stats

This build warning:

 kernel/sched.c: In function 'set_task_cpu':
 kernel/sched.c:2070: warning: unused variable 'old_rq'

Made me realize that the forced2_migrations stat looks pretty
pointless (and a misnomer) - remove it.

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <new-submission>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent dfc12eb2
......@@ -1174,7 +1174,6 @@ struct sched_entity {
u64 nr_failed_migrations_running;
u64 nr_failed_migrations_hot;
u64 nr_forced_migrations;
u64 nr_forced2_migrations;
u64 nr_wakeups;
u64 nr_wakeups_sync;
......
......@@ -2067,7 +2067,6 @@ task_hot(struct task_struct *p, u64 now, struct sched_domain *sd)
void set_task_cpu(struct task_struct *p, unsigned int new_cpu)
{
int old_cpu = task_cpu(p);
struct rq *old_rq = cpu_rq(old_cpu);
struct cfs_rq *old_cfsrq = task_cfs_rq(p),
*new_cfsrq = cpu_cfs_rq(old_cfsrq, new_cpu);
......@@ -2075,10 +2074,6 @@ void set_task_cpu(struct task_struct *p, unsigned int new_cpu)
if (old_cpu != new_cpu) {
p->se.nr_migrations++;
#ifdef CONFIG_SCHEDSTATS
if (task_hot(p, old_rq->clock, NULL))
schedstat_inc(p, se.nr_forced2_migrations);
#endif
perf_sw_event(PERF_COUNT_SW_CPU_MIGRATIONS,
1, 1, NULL, 0);
}
......@@ -2521,7 +2516,6 @@ static void __sched_fork(struct task_struct *p)
p->se.nr_failed_migrations_running = 0;
p->se.nr_failed_migrations_hot = 0;
p->se.nr_forced_migrations = 0;
p->se.nr_forced2_migrations = 0;
p->se.nr_wakeups = 0;
p->se.nr_wakeups_sync = 0;
......
......@@ -432,7 +432,6 @@ void proc_sched_show_task(struct task_struct *p, struct seq_file *m)
P(se.nr_failed_migrations_running);
P(se.nr_failed_migrations_hot);
P(se.nr_forced_migrations);
P(se.nr_forced2_migrations);
P(se.nr_wakeups);
P(se.nr_wakeups_sync);
P(se.nr_wakeups_migrate);
......@@ -508,7 +507,6 @@ void proc_sched_set_task(struct task_struct *p)
p->se.nr_failed_migrations_running = 0;
p->se.nr_failed_migrations_hot = 0;
p->se.nr_forced_migrations = 0;
p->se.nr_forced2_migrations = 0;
p->se.nr_wakeups = 0;
p->se.nr_wakeups_sync = 0;
p->se.nr_wakeups_migrate = 0;
......
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