From 96e74ebf8d594496f3dda5f8e26af6b4e161e4e9 Mon Sep 17 00:00:00 2001
From: Valentin Schneider <valentin.schneider@arm.com>
Date: Wed, 26 Feb 2020 12:45:43 +0000
Subject: [PATCH] sched/debug: Add task uclamp values to SCHED_DEBUG procfs
Requested and effective uclamp values can be a bit tricky to decipher when
playing with cgroup hierarchies. Add them to a task's procfs when
SCHED_DEBUG is enabled.
Reviewed-by: Qais Yousef <qais.yousef@arm.com>
Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/20200226124543.31986-4-valentin.schneider@arm.com
---
kernel/sched/debug.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
index 315ef6de3cc4..a562df57a86e 100644
--- a/kernel/sched/debug.c
+++ b/kernel/sched/debug.c
@@ -946,6 +946,12 @@ void proc_sched_show_task(struct task_struct *p, struct pid_namespace *ns,
P(se.avg.last_update_time);
P(se.avg.util_est.ewma);
P(se.avg.util_est.enqueued);
+#endif
+#ifdef CONFIG_UCLAMP_TASK
+ __PS("uclamp.min", p->uclamp[UCLAMP_MIN].value);
+ __PS("uclamp.max", p->uclamp[UCLAMP_MAX].value);
+ __PS("effective uclamp.min", uclamp_eff_value(p, UCLAMP_MIN));
+ __PS("effective uclamp.max", uclamp_eff_value(p, UCLAMP_MAX));
#endif
P(policy);
P(prio);