linux-kernel - Re: [PATCH] ring-buffer: Fix polling on trace

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Message-ID: <20140715154612.06afb98a@gandalf.local.home>
Date:	Tue, 15 Jul 2014 15:46:12 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Martin Lau <kafai@...com>
Cc:	<linux-kernel@...r.kernel.org>, <clm@...com>
Subject: Re: [PATCH] ring-buffer: Fix polling on trace_pipe

On Thu, 10 Jul 2014 15:20:30 -0700
Martin Lau <kafai@...com> wrote:

> Hi Steve,
> 
> Do you have a chance to give it another try?
> 

OK, I finally got around to testing it. Yep I see your point. Do you
think it should go to 3.16 and stable? I can add it to my next git pull
request.

Also, I modified your test such that it wouldn't hang on failure, but
detects that it hung and returns a exit value to add this to my
testing. That is, it exits with zero on success and non zero on failure.

-- Steve

View attachment "ftrace-test-epoll-kafai-2.c" of type "text/x-c++src" (2760 bytes)