From: Hui Su <sh_def@163.com>
To: sh_def@163.com, leon@kernel.org, jgg@ziepe.ca,
keescook@chromium.org, kvalo@codeaurora.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] async.c: reduce the critical region in lowest_in_progress()
Date: Thu, 15 Oct 2020 22:05:10 +0800 [thread overview]
Message-ID: <20201015140510.GA19561@rlk> (raw)
The judgement of first do not need to be in the critical region.
So move it out.
Signed-off-by: Hui Su <sh_def@163.com>
---
kernel/async.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/async.c b/kernel/async.c
index 33258e6e20f8..9d33ffcc84c7 100644
--- a/kernel/async.c
+++ b/kernel/async.c
@@ -96,10 +96,10 @@ static async_cookie_t lowest_in_progress(struct async_domain *domain)
struct async_entry, global_list);
}
+ spin_unlock_irqrestore(&async_lock, flags);
if (first)
ret = first->cookie;
- spin_unlock_irqrestore(&async_lock, flags);
return ret;
}
--
2.25.1
reply other threads:[~2020-10-15 14:06 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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=20201015140510.GA19561@rlk \
--to=sh_def@163.com \
--cc=jgg@ziepe.ca \
--cc=keescook@chromium.org \
--cc=kvalo@codeaurora.org \
--cc=leon@kernel.org \
--cc=linux-kernel@vger.kernel.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.