linux-kernel - [tip: sched/urgent] sched/fair: Remove stale FREQUENCY

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Message-ID: <171593317034.10875.13671501551374746016.tip-bot2@tip-bot2>
Date: Fri, 17 May 2024 08:06:10 -0000
From: "tip-bot2 for Christian Loehle" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Christian Loehle <christian.loehle@....com>,
 Ingo Molnar <mingo@...nel.org>, Vincent Guittot <vincent.guittot@...aro.org>,
 x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: sched/urgent] sched/fair: Remove stale FREQUENCY_UTIL comment

The following commit has been merged into the sched/urgent branch of tip:

Commit-ID:     7cb7fb5b49399fc59f1c44686d82c0df0776c8c6
Gitweb:        https://git.kernel.org/tip/7cb7fb5b49399fc59f1c44686d82c0df0776c8c6
Author:        Christian Loehle <christian.loehle@....com>
AuthorDate:    Tue, 05 Mar 2024 15:18:20 
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Fri, 17 May 2024 09:51:54 +02:00

sched/fair: Remove stale FREQUENCY_UTIL comment

On 05/03/2024 15:05, Vincent Guittot wrote:

I'm fine with either and that was my first thought here, too, but it did seem like
the comment was mostly placed there to justify the 'unexpected' high utilization
when explicitly passing FREQUENCY_UTIL and the need to clamp it then.
So removing did feel slightly more natural to me anyway.

So alternatively:

From: Christian Loehle <christian.loehle@....com>
Date: Tue, 5 Mar 2024 09:34:41 +0000
Subject: [PATCH] sched/fair: Remove stale FREQUENCY_UTIL mention

effective_cpu_util() flags were removed, so remove mentioning of the
flag.

commit 9c0b4bb7f6303 ("sched/cpufreq: Rework schedutil governor performance estimation")
reworked effective_cpu_util() removing enum cpu_util_type. Modify the
comment accordingly.

Signed-off-by: Christian Loehle <christian.loehle@....com>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Reviewed-by: Vincent Guittot <vincent.guittot@...aro.org>
Link: https://lore.kernel.org/r/0e2833ee-0939-44e0-82a2-520a585a0153@arm.com
---
 kernel/sched/fair.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 9009787..9744b50 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -7900,8 +7900,8 @@ eenv_pd_max_util(struct energy_env *eenv, struct cpumask *pd_cpus,
 		 * Performance domain frequency: utilization clamping
 		 * must be considered since it affects the selection
 		 * of the performance domain frequency.
-		 * NOTE: in case RT tasks are running, by default the
-		 * FREQUENCY_UTIL's utilization can be max OPP.
+		 * NOTE: in case RT tasks are running, by default the min
+		 * utilization can be max OPP.
 		 */
 		eff_util = effective_cpu_util(cpu, util, &min, &max);