linux-kernel - Re: [PATCH v2.1] ftracetest: Do not use usleep directly

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Date:	Thu, 2 Apr 2015 09:38:27 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Cc:	Namhyung Kim <namhyung@...nel.org>,
	Shuah Khan <shuahkh@....samsung.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Pádraig Brady <P@...igBrady.com>,
	Michael Ellerman <mpe@...erman.id.au>,
	Dave Jones <davej@...emonkey.org.uk>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: Re: [PATCH v2.1] ftracetest: Do not use usleep directly

On Thu, 02 Apr 2015 14:58:04 +0900
Masami Hiramatsu <masami.hiramatsu.pt@...achi.com> wrote:

> (2015/04/02 13:34), Namhyung Kim wrote:
> > The usleep is only provided on distros from Redhat so running ftracetest
> > on other distro resulted in failures due to the missing usleep.
> > 
> > The reason of using [u]sleep in the test was to generate (scheduler)
> > events.  It can be done various ways like this:
> > 
> > yield() {  ping localhost -c 1 || sleep .001 || usleep 1 || sleep 1; }
> 
> Nice hack! :)

Yep, it was Pádraig Brady's idea.

> 
> Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>

Acked-by: Steven Rostedt <rostedt@...dmis.org>

-- Steve

> 
> > 
> > Reported-by: Michael Ellerman <mpe@...erman.id.au>
> > Reported-by: Dave Jones <davej@...emonkey.org.uk>
> > Reported-by: Luis Henriques <luis.henriques@...onical.com>
> > Based-on-patch-by: Pádraig Brady <P@...igBrady.com>
> > CC: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
> > Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> > ---
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