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 <[e-mail]>
Signed-off-by: Valentin Schneider <[e-mail]>
Signed-off-by: Peter Zijlstra (Intel) <[e-mail]>
Signed-off-by: Ingo Molnar <[e-mail]>
Link: https://lkml.kernel.org/r/[e-mail]

kernel/sched/debug.c

···
 	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);
 	if (task_has_dl_policy(p)) {