linux-kernel - Re: [for-next][PATCH 3/7] ftracetest: Add instance create and delete test

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Date:	Wed, 09 Dec 2015 16:09:38 +1100
From:	Michael Ellerman <mpe@...erman.id.au>
To:	Steven Rostedt <rostedt@...dmis.org>, linux-kernel@...r.kernel.org
Cc:	Ingo Molnar <mingo@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [for-next][PATCH 3/7] ftracetest: Add instance create and
 delete test

On Wed, 2015-11-25 at 11:08 -0500, Steven Rostedt wrote:
> From: "Steven Rostedt (Red Hat)" <rostedt@...dmis.org>
> 
> Create a test to test instance creation and deletion. Several tasks are
> created that create 3 directories and delete them. The tasks all create the
> same directories. This places a stress on the code that creates and deletes
> instances.
> 
> diff --git a/tools/testing/selftests/ftrace/test.d/instances/instance.tc b/tools/testing/selftests/ftrace/test.d/instances/instance.tc
> new file mode 100644
> index 000000000000..773e276ff90b
> --- /dev/null
> +++ b/tools/testing/selftests/ftrace/test.d/instances/instance.tc
> @@ -0,0 +1,90 @@

<snip>

> +instance_slam &
> +x=`jobs -l | tail -1`
> +p5=`echo $x | cut -d' ' -f2`
> +echo $p5
> +
> +ls -lR >/dev/null
> +sleep 1
> +
> +kill -1 $p1
> +kill -1 $p2
> +kill -1 $p3
> +kill -1 $p4
> +kill -1 $p5

Tells me:

./ftracetest: 72: kill: Usage: kill [-s sigspec | -signum | -sigspec] [pid | job]... or
kill -l [exitstatus]

And the test hangs forever.

I suspect because my /bin/sh is dash?

# /bin/dash
# kill -1
/bin/dash: 1: kill: Usage: kill [-s sigspec | -signum | -sigspec] [pid | job]... or
kill -l [exitstatus]


cheers

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