linux-kernel - Re: [PATCH v3 13/14] tracing/selftest: Add selftests to test trace

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Message-Id: <20180528013258.59715b8111d3e59319006cd2@kernel.org>
Date:   Mon, 28 May 2018 01:32:58 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Tom Zanussi <tom.zanussi@...ux.intel.com>,
        Clark Williams <williams@...hat.com>,
        Karim Yaghmour <karim.yaghmour@...rsys.com>,
        Brendan Gregg <bgregg@...flix.com>,
        Joel Fernandes <joel@...lfernandes.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Yann Ylavic <ylavic.dev@...il.com>,
        linux-rt-users@...r.kernel.org, Shuah Khan <shuahkhan@...il.com>
Subject: Re: [PATCH v3 13/14] tracing/selftest: Add selftests to test
 trace_marker histogram triggers

Hi Steve,

On Fri, 25 May 2018 17:13:53 -0400
Steven Rostedt <rostedt@...dmis.org> wrote:

> On Fri, 25 May 2018 17:12:29 -0400
> Steven Rostedt <rostedt@...dmis.org> wrote:
> 
>  
> > #!/bin/sh
> 
> Hmm, I think I need to make this #!/bin/bash
> 
> > test_trace() {
> >     file=$1
> >     x=$2
> > 
> >     cat $file | while read line; do
> > 	if [ "$line" != "${line/\#/}" ]; then
> > 	    continue
> > 	fi
> > 	echo "testing $line for >$x<"
> > 	if [ "$line" == "${line/>$x</}" ]; then
> 
> The ${line/>$x</} is unique to bash I believe.

Hmm, could you try to use only posix-shell based test ?
Since I would like to keep this can run on small 
environment, like busybox, etc.

Thank you,

> 
> -- Steve
> 
> > 	    fail "$line does not have >$x< in it"
> > 	fi
> > 	let x=$x+2
> >     done
> > }
> > 


-- 
Masami Hiramatsu <mhiramat@...nel.org>