linux-kernel - Re: [RFC 0/3] perf tools: Make perf_hpp_

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Message-ID: <CAM9d7cj8A=2c=wW_JQnmLpzutDJ6qKcSHjE60WFDNPu-L21Faw@mail.gmail.com>
Date:	Tue, 6 Oct 2015 23:04:28 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Jiri Olsa <jolsa@...nel.org>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [RFC 0/3] perf tools: Make perf_hpp__init respect output dimensions

On Tue, Oct 6, 2015 at 9:25 PM, Jiri Olsa <jolsa@...nel.org> wrote:
> hi,
> The perf_hpp__init currently does not respect sorting dimensions
> and the setup_sorting function could endup queueing same format
> twice. That screwed up the perf_hpp__list and got stuck in loop
> within perf_hpp__setup_output_field function.
>
>   $ perf report -F +overhead
>
>   0x00000000004c1355 in perf_hpp__is_sort_entry (format=format@...ry=0x880440 <perf_hpp.format>) at util/sort.c:1506
>   1506    {
>
>      #0  0x00000000004c1355 in perf_hpp__is_sort_entry (format=format@...ry=0x880440 <perf_hpp.format>) at util/sort.c:1506
>      #1  0x00000000004c139d in perf_hpp__same_sort_entry (a=a@...ry=0x880440 <perf_hpp.format>, b=b@...ry=0x2bb2fe0) at util/sort.c:1380
>      #2  0x00000000004f8d3c in perf_hpp__setup_output_field () at ui/hist.c:554
>      #3  0x00000000004c1d1e in setup_sorting () at util/sort.c:1984
>      #4  0x000000000042efbf in cmd_report (argc=0, argv=0x7ffea5a0e790, prefix=<optimized out>) at builtin-report.c:874
>      #5  0x0000000000476f13 in run_builtin (p=p@...ry=0x875628 <commands+168>, argc=argc@...ry=3, argv=argv@...ry=0x7ffea5a0e790) at perf.c:385
>      #6  0x000000000047710b in handle_internal_command (argc=3, argv=0x7ffea5a0e790) at perf.c:445
>      #7  0x0000000000477176 in run_argv (argcp=argcp@...ry=0x7ffea5a0e5fc, argv=argv@...ry=0x7ffea5a0e5f0) at perf.c:489
>      #8  0x00000000004773e7 in main (argc=3, argv=0x7ffea5a0e790) at perf.c:606
>
> Using hpp_dimension__add_output function to register
> the output column. It will also mark the dimension
> as taken and omit above stuck.
>
> It might need some other changes.. not sure, Namhyung? ;-)

Nope.  It looks good to me as is. :)  It should work once it sets up
the output field and sort list properly, so

Acked-by: Namhyung Kim <namhyung@...nel.org>

Thanks,
Namhyung



>
> Available in:
>   git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
>   perf/cols
>
> thanks,
> jirka
>
>
> ---
> Jiri Olsa (3):
>       perf tools: Get rid of superfluos call to reset_dimensions
>       perf tools: Introduce hpp_dimension__add_output function
>       perf tools: Use hpp_dimension__add_output to register hpp columns
>
>  tools/perf/ui/hist.c   | 16 ++++++++--------
>  tools/perf/util/sort.c |  8 ++++++--
>  tools/perf/util/sort.h |  2 ++
>  3 files changed, 16 insertions(+), 10 deletions(-)



-- 
Thanks,
Namhyung
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