From: Pavel Machek <pavel@ucw.cz>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>,
namhyung@kernel.org, masami.hiramatsu.pt@hitachi.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ftracetest: Replace usleep with sleep 0.000001
Date: Fri, 26 Dec 2014 00:17:25 +0100 [thread overview]
Message-ID: <20141225231725.GA29853@amd> (raw)
In-Reply-To: <20141220170725.776363ac@gandalf.local.home>
On Sat 2014-12-20 17:07:25, Steven Rostedt wrote:
> On Sat, 20 Dec 2014 21:42:13 +0100
> Pavel Machek <pavel@ucw.cz> wrote:
>
> > On Wed 2014-12-10 15:38:27, Michael Ellerman wrote:
> > > usleep is a Fedoraism, it's not generally available on Debian based
> > > systems AFAICS.
> > >
> > > GNU sleep accepts a floating point argument, so use that instead.
> > >
> > > Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
> >
> > Could ftrace user interface be enhanced not to need random delays?
> >
>
> Not sure what you are talking about. These "random delays" are not for
> the interface, but instead to force some events to happen and to make
> sure they did.
>
> As the subject states, this is for "ftracetest" which is the selftests
> for ftrace.
>
> The usleep is basically a "do something to trigger events", and we
> don't want to wait long in doing it.
Yep, I misunderstood, sorry.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
prev parent reply other threads:[~2014-12-25 23:17 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-10 4:38 [PATCH] ftracetest: Replace usleep with sleep 0.000001 Michael Ellerman
2014-12-10 8:19 ` Namhyung Kim
2014-12-11 5:12 ` Masami Hiramatsu
2014-12-11 23:39 ` Michael Ellerman
2014-12-20 20:42 ` Pavel Machek
2014-12-20 22:07 ` Steven Rostedt
2014-12-23 4:21 ` Namhyung Kim
2014-12-23 7:08 ` Michael Ellerman
2014-12-24 1:00 ` Masami Hiramatsu
2014-12-25 23:17 ` Pavel Machek [this message]
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