mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: Brendan Jackman <brendan.jackman@arm.com>
To: Ingo Molnar <mingo@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	linux-kernel@vger.kernel.org
Cc: Joel Fernandes <joelaf@google.com>,
	Andres Oportus <andresoportus@google.com>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Josef Bacik <josef@toxicpanda.com>,
	Morten Rasmussen <morten.rasmussen@arm.com>
Subject: [PATCH v2 2/5] sched/fair: Remove unnecessary comparison with -1
Date: Fri, 25 Aug 2017 11:16:29 +0100	[thread overview]
Message-ID: <20170825101632.28065-3-brendan.jackman@arm.com> (raw)
In-Reply-To: <20170825101632.28065-1-brendan.jackman@arm.com>

Since commit 83a0a96a5f26 ("sched/fair: Leverage the idle state info
when choosing the "idlest" cpu") find_idlest_grou_cpu (formerly
find_idlest_cpu) no longer returns -1.

Signed-off-by: Brendan Jackman <brendan.jackman@arm.com>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Morten Rasmussen <morten.rasmussen@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
---
 kernel/sched/fair.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index f6e277c65235..4ccecbf825bf 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5583,7 +5583,7 @@ static inline int find_idlest_cpu(struct sched_domain *sd, struct task_struct *p
 		}
 
 		new_cpu = find_idlest_group_cpu(group, p, cpu);
-		if (new_cpu == -1 || new_cpu == cpu) {
+		if (new_cpu == cpu) {
 			/* Now try balancing at a lower domain level of cpu */
 			sd = sd->child;
 			continue;
-- 
2.14.1

  parent reply	other threads:[~2017-08-25 10:17 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-25 10:16 [PATCH v2 0/5] sched/fair: Tweaks for select_task_rq_fair slowpath Brendan Jackman
2017-08-25 10:16 ` [PATCH v2 1/5] sched/fair: Move select_task_rq_fair slow-path into its own function Brendan Jackman
2017-08-25 12:22   ` Josef Bacik
2017-08-25 13:40   ` Vincent Guittot
2017-08-25 10:16 ` Brendan Jackman [this message]
2017-08-25 12:44   ` [PATCH v2 2/5] sched/fair: Remove unnecessary comparison with -1 Josef Bacik
2017-08-25 13:40   ` Vincent Guittot
2017-08-25 10:16 ` [PATCH v2 3/5] sched/fair: Fix find_idlest_group when local group is not allowed Brendan Jackman
2017-08-25 13:39   ` Vincent Guittot
2017-08-25 10:16 ` [PATCH v2 4/5] sched/fair: Fix use of find_idlest_group when no groups are allowed Brendan Jackman
2017-08-25 13:39   ` Vincent Guittot
2017-08-25 10:16 ` [PATCH v2 5/5] sched/fair: Fix use of find_idlest_group when local group is idlest Brendan Jackman
2017-08-25 13:38   ` Vincent Guittot
2017-08-25 15:51     ` Brendan Jackman
2017-08-28  8:56       ` Vincent Guittot
2017-08-28  9:11         ` Vincent Guittot
2017-08-29 17:09         ` Brendan Jackman

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20170825101632.28065-3-brendan.jackman@arm.com \
    --to=brendan.jackman@arm.com \
    --cc=andresoportus@google.com \
    --cc=dietmar.eggemann@arm.com \
    --cc=joelaf@google.com \
    --cc=josef@toxicpanda.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@redhat.com \
    --cc=morten.rasmussen@arm.com \
    --cc=peterz@infradead.org \
    --cc=vincent.guittot@linaro.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox

Powered by JetHome