From 0c2924079f5a83ed715630680e338b3685a0bf7d Mon Sep 17 00:00:00 2001 From: Haifeng Xu Date: Tue, 26 Sep 2023 11:57:22 +0000 Subject: sched/psi: Bail out early from irq time accounting We could bail out early when psi was disabled. Signed-off-by: Haifeng Xu Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Chengming Zhou Link: https://lore.kernel.org/r/20230926115722.467833-1-haifeng.xu@shopee.com --- kernel/sched/psi.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'kernel/sched') diff --git a/kernel/sched/psi.c b/kernel/sched/psi.c index 44a78774ae87..519bc922a960 100644 --- a/kernel/sched/psi.c +++ b/kernel/sched/psi.c @@ -998,6 +998,9 @@ void psi_account_irqtime(struct task_struct *task, u32 delta) struct psi_group_cpu *groupc; u64 now; + if (static_branch_likely(&psi_disabled)) + return; + if (!task->pid) return; -- cgit v1.2.3