From: Li Zefan <lizf@cn.fujitsu.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Ilya Dryomov <idryomov@gmail.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] tracing: fix event_subsystem ref counting
Date: Tue, 01 Nov 2011 09:12:12 +0800 [thread overview]
Message-ID: <4EAF476C.2060900@cn.fujitsu.com> (raw)
In-Reply-To: <1320077699.4793.5.camel@gandalf.stny.rr.com>
Steven Rostedt wrote:
> On Mon, 2011-10-31 at 11:07 +0200, Ilya Dryomov wrote:
>> Fix a bug introduced by e9dbfae5, which prevents event_subsystem from
>> ever being released.
>>
>> Ref_count was added to keep track of subsystem users, not for counting
>> events. Subsystem is created with ref_count = 1, so there is no need to
>> increment it for every event, we have nr_events for that. Fix this by
>> touching ref_count only when we actually have a new user -
>> subsystem_open().
>
> Good catch, I'll pull this in.
>
I made a different fix last week:
http://marc.info/?l=linux-kernel&m=131978486911595&w=2
but I guess Ilya's version is a bit better.
next prev parent reply other threads:[~2011-11-01 1:10 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-31 9:07 [PATCH] tracing: fix event_subsystem ref counting Ilya Dryomov
2011-10-31 16:14 ` Steven Rostedt
2011-11-01 1:12 ` Li Zefan [this message]
2011-11-01 1:38 ` Steven Rostedt
2011-11-18 23:04 ` [tip:perf/core] " tip-bot for Ilya Dryomov
2011-12-06 6:25 ` tip-bot for Ilya Dryomov
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=4EAF476C.2060900@cn.fujitsu.com \
--to=lizf@cn.fujitsu.com \
--cc=idryomov@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=rostedt@goodmis.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