diff options
| author | Peng Liu | 2020-10-08 23:48:46 +0800 |
|---|---|---|
| committer | Peter Zijlstra | 2020-10-29 11:00:28 +0100 |
| commit | 26762423a2664692de2bcccc9de684a5ac105e23 (patch) | |
| tree | 0228fd08fc8c15d1c1ebc2c5e96a7e42dd33cf91 /kernel/sched/topology.c | |
| parent | b9c88f752268383beff0d56e50d52b8ae62a02f8 (diff) | |
sched/deadline: Optimize sched_dl_global_validate()
Under CONFIG_SMP, dl_bw is per root domain, but not per CPU.
When checking or updating dl_bw, currently iterating every CPU is
overdoing, just need iterate each root domain once.
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Peng Liu <iwtbavbm@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Daniel Bristot de Oliveira <bristot@redhat.com>
Acked-by: Juri Lelli <juri.lelli@redhat.com>
Link: https://lkml.kernel.org/r/78d21ee792cc48ff79e8cd62a5f26208463684d6.1602171061.git.iwtbavbm@gmail.com
Diffstat (limited to 'kernel/sched/topology.c')
| -rw-r--r-- | kernel/sched/topology.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c index dd7770226086..90f3e5558fa2 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -516,6 +516,7 @@ static int init_rootdomain(struct root_domain *rd) init_irq_work(&rd->rto_push_work, rto_push_irq_work_func); #endif + rd->visit_gen = 0; init_dl_bw(&rd->dl_bw); if (cpudl_init(&rd->cpudl) != 0) goto free_rto_mask; |