diff options
| -rw-r--r-- | kernel/sched_fair.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index 44d7bdc800f..e71d44e5bf5 100644 --- a/kernel/sched_fair.c +++ b/kernel/sched_fair.c @@ -2894,7 +2894,14 @@ redo: if (!ld_moved) { schedstat_inc(sd, lb_failed[idle]); - sd->nr_balance_failed++; + /* + * Increment the failure counter only on periodic balance. + * We do not want newidle balance, which can be very + * frequent, pollute the failure counter causing + * excessive cache_hot migrations and active balances. + */ + if (idle != CPU_NEWLY_IDLE) + sd->nr_balance_failed++; if (need_active_balance(sd, sd_idle, idle)) { raw_spin_lock_irqsave(&busiest->lock, flags); |