From: Zijun Hu <zijuhu@codeaurora.org>
To: mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com,
vincent.guittot@linaro.org
Cc: dietmar.eggemann@arm.com, rostedt@goodmis.org,
bsegall@google.com, mgorman@suse.de,
linux-kernel@vger.kernel.org, zijuhu@codeaurora.org
Subject: [PATCH v1] sched/cfs: Fix pick_next_entity() implementation error
Date: Wed, 1 Jul 2020 18:07:06 +0800 [thread overview]
Message-ID: <1593598026-2451-1-git-send-email-zijuhu@codeaurora.org> (raw)
sched_entity @se not static @left should be compared
to pick up @cfs_rq->next.
Signed-off-by: Zijun Hu <zijuhu@codeaurora.org>
---
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 658aa7a2ae6f..4790f2d851ad 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -4452,13 +4452,13 @@ pick_next_entity(struct cfs_rq *cfs_rq, struct sched_entity *curr)
/*
* Prefer last buddy, try to return the CPU to a preempted task.
*/
- if (cfs_rq->last && wakeup_preempt_entity(cfs_rq->last, left) < 1)
+ if (cfs_rq->last && wakeup_preempt_entity(cfs_rq->last, se) < 1)
se = cfs_rq->last;
/*
* Someone really wants this to run. If it's not unfair, run it.
*/
- if (cfs_rq->next && wakeup_preempt_entity(cfs_rq->next, left) < 1)
+ if (cfs_rq->next && wakeup_preempt_entity(cfs_rq->next, se) < 1)
se = cfs_rq->next;
clear_buddies(cfs_rq, se);
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
next reply other threads:[~2020-07-01 10:07 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-01 10:07 Zijun Hu [this message]
2020-07-01 10:47 ` [PATCH v1] sched/cfs: Fix pick_next_entity() implementation error Vincent Guittot
2020-07-01 11:43 ` Zijun Hu
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=1593598026-2451-1-git-send-email-zijuhu@codeaurora.org \
--to=zijuhu@codeaurora.org \
--cc=bsegall@google.com \
--cc=dietmar.eggemann@arm.com \
--cc=juri.lelli@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mgorman@suse.de \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=rostedt@goodmis.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;
as well as URLs for NNTP newsgroup(s).