linux-kernel - Re: [PATCH 2/4] perf annotate: Align filename:linenr and more correct summary

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Date:   Wed, 22 Feb 2017 20:22:57 +0900
From:   Namhyung Kim <namhyung@...nel.org>
To:     Taeung Song <treeze.taeung@...il.com>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Jiri Olsa <jolsa@...nel.org>, Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Wang Nan <wangnan0@...wei.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Jiri Olsa <jolsa@...hat.com>
Subject: Re: [PATCH 2/4] perf annotate: Align filename:linenr and more correct summary

On Wed, Feb 22, 2017 at 7:08 PM, Taeung Song <treeze.taeung@...il.com> wrote:
> In the stdio interface, currently 'filename:linenr' infos
> are confusedly printed in the intervals of assembly code.
> So fix it.
>
> The cause was a 0.5% filter of if statement. After fixed,
> additionally summary of overhead per srcline is more correct.
>
> Before:
>
>     # perf annotate --stdio -l
>
>   Sorted summary for file /home/taeung/workspace/perf-test/test
>   ----------------------------------------------
>
>      36.57 test.c:38
>      28.72 test.c:37
>
>   ...
>
>    Percent |      Source code & Disassembly of test ...
>
>   ...
>
>       0.21 :        400816:       push   %rbp
>    test.c:26    1.86 :         400817:       mov    %rsp,%rbp
>       0.21 :        40081a:       mov    %edi,-0x24(%rbp)
>       0.21 :        40081d:       mov    %rsi,-0x30(%rbp)
>
> After:
>
>     # perf annotate --stdio -l
>
>   Sorted summary for file /home/taeung/workspace/perf-test/test
>   ----------------------------------------------
>
>      37.40 test.c:38
>      29.34 test.c:37
>
>   ...
>
>    Percent |      Source code & Disassembly of test ...
>
>   ...
>
>    test.c:26
>       0.21 :        400816:       push   %rbp
>       1.86 :        400817:       mov    %rsp,%rbp
>       0.21 :        40081a:       mov    %edi,-0x24(%rbp)
>       0.21 :        40081d:       mov    %rsi,-0x30(%rbp)

I guess it's just a problem of a missing newline..

Thanks,
Namhyung