linux-kernel - Re: [PATCH] Remove redhat'ism from ftrace selftests.

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Date:	Thu, 05 Mar 2015 12:18:57 +1100
From:	Michael Ellerman <mpe@...erman.id.au>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Shuah Khan <shuahkh@....samsung.com>,
	Dave Jones <davej@...emonkey.org.uk>,
	Steven Rostedt <rostedt@...dmis.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Remove redhat'ism from ftrace selftests.

On Wed, 2015-03-04 at 21:44 +0900, Namhyung Kim wrote:
> 
> I think that there's no need to even call true or echo..
> 
> From 0549544e8e982df6478f11e2b4fe419f94c22434 Mon Sep 17 00:00:00 2001
> From: Namhyung Kim <namhyung@...nel.org>
> Date: Wed, 4 Mar 2015 21:26:38 +0900
> Subject: [PATCH] ftracetest: Do not use usleep
> 
> 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.  But as we use 'cat trace | grep | wc -l' to read the events,
> the command themselves already generate some events before reading the
> trace file so no need to call [u]sleep explicitly.
> 
> Reported-by: Michael Ellerman <mpe@...erman.id.au>
> Reported-by: Dave Jones <davej@...emonkey.org.uk>
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>

Thanks, this is working for me.

Tested-by: Michael Ellerman <mpe@...erman.id.au>

$ cat /etc/issue
Ubuntu 14.10 \n \l
$ git log -2 --pretty=oneline
385a914624fc9fb6d0ccc3d2fd3a12ebd1ece7dd ftracetest: Do not use usleep
a6c5170d1edea97c538c81e377e56c7b5c5b7e63 Merge branch 'for-4.0' of git://linux-nfs.org/~bfields/linux
$ sudo ./ftracetest 
=== Ftrace unit tests ===
[1] Basic trace file check	[PASS]
[2] Basic test for tracers	[PASS]
[3] Basic trace clock test	[PASS]
[4] Basic event tracing check	[PASS]
[5] event tracing - enable/disable with event level files	[PASS]
[6] event tracing - enable/disable with subsystem level files	[PASS]
[7] event tracing - enable/disable with top level files	[PASS]
[8] ftrace - function graph filters with stack tracer	[PASS]
[9] ftrace - function graph filters	[PASS]
[10] ftrace - function profiler with function tracing	[PASS]
[11] Kprobe dynamic event - adding and removing	[PASS]
[12] Kprobe dynamic event - busy event check	[PASS]
[13] Kprobe dynamic event with arguments	[PASS]
[14] Kprobe dynamic event with function tracer	[PASS]
[15] Kretprobe dynamic event with arguments	[PASS]

# of passed:  15
# of failed:  0
# of unresolved:  0
# of untested:  0
# of unsupported:  0
# of xfailed:  0
# of undefined(test bug):  0


cheers



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