From 9065ce69754dece78606c8bbb3821449272e56bf Mon Sep 17 00:00:00 2001 From: Christian Loehle Date: Wed, 29 Jan 2025 17:59:44 +0000 Subject: [PATCH] sched/debug: Provide slice length for fair tasks Since commit: 857b158dc5e8 ("sched/eevdf: Use sched_attr::sched_runtime to set request/slice suggestion") ... we have the userspace per-task tunable slice length, which is a key parameter that is otherwise difficult to obtain, so provide it in /proc/$PID/sched. [ mingo: Clarified the changelog. ] Signed-off-by: Christian Loehle Signed-off-by: Ingo Molnar Cc: Peter Zijlstra Link: https://lore.kernel.org/r/453349b1-1637-42f5-a7b2-2385392b5956@arm.com --- kernel/sched/debug.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c index a1be00a988bf6..5b32d3cc393bf 100644 --- a/kernel/sched/debug.c +++ b/kernel/sched/debug.c @@ -1265,6 +1265,8 @@ void proc_sched_show_task(struct task_struct *p, struct pid_namespace *ns, if (task_has_dl_policy(p)) { P(dl.runtime); P(dl.deadline); + } else if (fair_policy(p->policy)) { + P(se.slice); } #ifdef CONFIG_SCHED_CLASS_EXT __PS("ext.enabled", task_on_scx(p)); -- 2.39.5