linux-kernel - Re: [PATCH 3/4] perf tools: Fix check-headers.sh output file variables

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Date:   Fri, 20 Jul 2018 11:57:45 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Jiri Olsa <jolsa@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        David Ahern <dsahern@...il.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH 3/4] perf tools: Fix check-headers.sh output file
 variables

Em Fri, Jul 20, 2018 at 01:00:35PM +0200, Jiri Olsa escreveu:
> The warning message in check_w function uses wrongly
> the $file variable instead of $file1 and $file2.

Humm,

Before:

Warning: Kernel ABI header at 'tools/arch/powerpc/include/uapi/asm/unistd.h' differs from latest version at 'arch/powerpc/include/uapi/asm/unistd.h'

After:

Warning: Kernel ABI header at '../arch/powerpc/include/uapi/asm/unistd.h' differs from latest version at '../../arch/powerpc/include/uapi/asm/unistd.h'


The previous version is better, I can then just use:

diff -u tools/arch/powerpc/include/uapi/asm/unistd.h arch/powerpc/include/uapi/asm/unistd.h

and get what changed, with your change I have to go to tools/perf before
doing that diff, which is an unnecessary extra step in at least my
workflow.

- Arnaldo

 
> Fixes: 582472973593 ("perf check-headers.sh: Add support to check 2 independent files")
> Link: http://lkml.kernel.org/n/tip-oh56ckqztoc07we7mtdphu7r@git.kernel.org
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> ---
>  tools/perf/check-headers.sh | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/perf/check-headers.sh b/tools/perf/check-headers.sh
> index 814aaf269949..73e723675c5f 100755
> --- a/tools/perf/check-headers.sh
> +++ b/tools/perf/check-headers.sh
> @@ -67,7 +67,7 @@ check_2 () {
>    cmd="diff $* $file1 $file2 > /dev/null"
>  
>    test -f $file2 &&
> -  eval $cmd || echo "Warning: Kernel ABI header at 'tools/$file' differs from latest version at '$file'" >&2
> +  eval $cmd || echo "Warning: Kernel ABI header at '$file1' differs from latest version at '$file2'" >&2
>  }
>  
>  check () {
> -- 
> 2.17.1