From: Valentin Schneider <valentin.schneider@arm.com>
To: linux-kernel@vger.kernel.org
Cc: mingo@kernel.org, peterz@infradead.org,
vincent.guittot@linaro.org, Dietmar.Eggemann@arm.com,
patrick.bellasi@matbug.net, qais.yousef@arm.com,
t1zhou@aliyun.com
Subject: [PATCH v2 3/3] sched/debug: Add task uclamp values to SCHED_DEBUG procfs
Date: Wed, 26 Feb 2020 12:45:43 +0000 [thread overview]
Message-ID: <20200226124543.31986-4-valentin.schneider@arm.com> (raw)
In-Reply-To: <20200226124543.31986-1-valentin.schneider@arm.com>
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.
Signed-off-by: Valentin Schneider <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);
--
2.24.0
next prev parent reply other threads:[~2020-02-26 12:46 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-26 12:45 [PATCH v2 0/3] sched/debug: Add uclamp values to procfs Valentin Schneider
2020-02-26 12:45 ` [PATCH v2 1/3] sched/debug: Remove redundant macro define Valentin Schneider
2020-04-08 12:20 ` [tip: sched/urgent] " tip-bot2 for Valentin Schneider
2020-02-26 12:45 ` [PATCH v2 2/3] sched/debug: Bunch up printing formats in common macros Valentin Schneider
2020-04-08 12:20 ` [tip: sched/urgent] sched/debug: Factor out printing formats into " tip-bot2 for Valentin Schneider
2020-02-26 12:45 ` Valentin Schneider [this message]
2020-04-08 12:20 ` [tip: sched/urgent] sched/debug: Add task uclamp values to SCHED_DEBUG procfs tip-bot2 for Valentin Schneider
2020-02-27 10:42 ` [PATCH v2 0/3] sched/debug: Add uclamp values to procfs Qais Yousef
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