diff options
| -rw-r--r-- | kernel/sched/fair.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 63113dcb8d1a..41b58387023d 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -11892,6 +11892,13 @@ static void kick_ilb(unsigned int flags) return; /* + * Don't bother if no new NOHZ balance work items for ilb_cpu, + * i.e. all bits in flags are already set in ilb_cpu. + */ + if ((atomic_read(nohz_flags(ilb_cpu)) & flags) == flags) + return; + + /* * Access to rq::nohz_csd is serialized by NOHZ_KICK_MASK; he who sets * the first flag owns it; cleared by nohz_csd_func(). */ |