lkml.org 
[lkml]   [2014]   [Dec]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] ftracetest: Replace usleep with sleep 0.000001
On Sat, Dec 20, 2014 at 05:07:25PM -0500, 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.

Right. AFAIK what ftracetest expects is a scheduler event so it
doesn't need to be the [u]sleep.

Thanks,
Namhyung


\
 
 \ /
  Last update: 2014-12-23 06:01    [W:0.135 / U:0.140 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site