linux-kernel - Re: [PATCH] ftracetest: replace usleep by sleep

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Date:	Wed, 25 Mar 2015 14:57:58 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Luis Henriques <luis.henriques@...onical.com>
Cc:	Shuah Khan <shuahkh@....samsung.com>,
	Namhyung Kim <namhyung@...nel.org>,
	linux-kernel@...r.kernel.org,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Subject: Re: [PATCH] ftracetest: replace usleep by sleep

On Wed, 25 Mar 2015 17:36:34 +0000
Luis Henriques <luis.henriques@...onical.com> wrote:

> 'usleep' seems to be a distro-specific utility and may not be
> available:
> 
>  [5] event tracing - enable/disable with event level files       [FAIL]
>  execute: /home/miguel/linux/tools/testing/selftests/ftrace/test.d/event/event-enable.tc
>  + . /home/miguel/linux/tools/testing/selftests/ftrace/test.d/event/event-enable.tc
>  + [ ! -f set_event -o ! -d events/sched ]
>  + reset_tracer
>  + echo nop
>  + do_reset
>  + echo
>  + clear_trace
>  + echo
>  + echo sched:sched_switch
>  + usleep 1
>  ./ftracetest: 24: /home/miguel/linux/tools/testing/selftests/ftrace/test.d/event/event-enable.tc: usleep: not found
> 
> Replace it with the more standard sleep.
> 
> Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
> ---
>  tools/testing/selftests/ftrace/test.d/event/event-enable.tc     | 6 +++---
>  tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc | 6 +++---
>  2 files changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/tools/testing/selftests/ftrace/test.d/event/event-enable.tc b/tools/testing/selftests/ftrace/test.d/event/event-enable.tc
> index 668616d9bb03..abafc0c3605c 100644
> --- a/tools/testing/selftests/ftrace/test.d/event/event-enable.tc
> +++ b/tools/testing/selftests/ftrace/test.d/event/event-enable.tc
> @@ -21,7 +21,7 @@ reset_tracer
>  do_reset
>  
>  echo 'sched:sched_switch' > set_event
> -usleep 1
> +sleep 0.001

We had patches out about this, because sleep 0.001 is not always
supported either.

I forgot what the final solution was suppose to be.

-- Steve
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