linux-kernel - Re: perf tools: Introduce new -P/--parent-deep report option

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <87a9mc15qm.fsf@sejong.aot.lge.com>
Date:	Thu, 27 Jun 2013 14:29:21 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc:	Jiri Olsa <jolsa@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: perf tools: Introduce new -P/--parent-deep report option

Hi Arnaldo,

On Wed, 26 Jun 2013 11:58:53 -0300, Arnaldo Carvalho de Melo wrote:
> Hi Jiri,
>
> 	About the patch below, can't this be solved by using a regex
> instead of a simple substring search instead of adding a new command
> line option?

???

IIUC he reused parent_regex for this.

And I think we can have the same effect by using -G and -p option
together without this new option.

Thanks,
Namhyung

>
> - Arnaldo
>
> commit 5b42ff035ec784c5c42c4a6bb9e7fada882f097e
> Author: Jiri Olsa <jolsa@...hat.com>
> Date:   Tue Jun 18 18:31:50 2013 +0200
>
>     perf tools: Introduce new -P/--parent-deep report option
>     
>     Introducing new -P/--parent-deep report option. It does the
>     same as '-p' but it force the deep search of the callchain
>     and looks for the deepest possible match.
>     
>     The -p option searches for the first match of the parent
>     pattern in the callchain.
>     
>       $ perf report -i perf.data.delete -p perf_session__delete -s parent
>     
>       +  99.51%  [other]
>       +   0.46%  perf_session__delete_dead_threads
>       +   0.03%  perf_session__delete
>       +   0.00%  perf_session__delete_threads
>     
>     so we got multiple 'different' matches instancies, while
>     they all belong under perf_session__delete function:
>     
>       $ perf report -i perf.data.delete -P perf_session__delete -s parent
>     
>       +  99.51%  [other]
>       +   0.49%  perf_session__delete
>     
>     NOTE the 'p' vs 'P' difference in above commands above.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/