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| author | Ingo Molnar <mingo@kernel.org> | 2012-08-28 18:05:55 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-08-28 18:05:55 +0200 |
| commit | 508dc4f8eece1a70c493afc6511fdf5934fef567 (patch) | |
| tree | b852a6a5bf9977a33a87158985de02d188ba71d7 /kernel/sched/fair.c | |
| parent | 734e9a26d612f64e1c9cfd92256969b773954ae2 (diff) | |
| parent | e3e45c01ae690e65f2650e5288b9af802e95a136 (diff) | |
| download | linux-next-508dc4f8eece1a70c493afc6511fdf5934fef567.tar.gz linux-next-508dc4f8eece1a70c493afc6511fdf5934fef567.zip | |
Merge branch 'perf/urgent' into perf/core
Pick up the latest fixes because upcoming uprobes changes will rely on it.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/fair.c')
| -rw-r--r-- | kernel/sched/fair.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index d0cc03b3e70b..c219bf8d704c 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -3387,6 +3387,14 @@ static int tg_load_down(struct task_group *tg, void *data) static void update_h_load(long cpu) { + struct rq *rq = cpu_rq(cpu); + unsigned long now = jiffies; + + if (rq->h_load_throttle == now) + return; + + rq->h_load_throttle = now; + rcu_read_lock(); walk_tg_tree(tg_load_down, tg_nop, (void *)cpu); rcu_read_unlock(); @@ -4293,11 +4301,10 @@ redo: env.src_rq = busiest; env.loop_max = min(sysctl_sched_nr_migrate, busiest->nr_running); + update_h_load(env.src_cpu); more_balance: local_irq_save(flags); double_rq_lock(this_rq, busiest); - if (!env.loop) - update_h_load(env.src_cpu); /* * cur_ld_moved - load moved in current iteration |