linux-kernel - Re: [PATCH v3 3/9] perf annotate: Fix wrong --show-total-period option showing number of samples

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Date:   Mon, 24 Jul 2017 14:37:25 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Taeung Song <treeze.taeung@...il.com>
Cc:     Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>,
        linux-kernel@...r.kernel.org, Namhyung Kim <namhyung@...nel.org>,
        Milian Wolff <milian.wolff@...b.com>,
        Jiri Olsa <jolsa@...hat.com>
Subject: Re: [PATCH v3 3/9] perf annotate: Fix wrong --show-total-period
 option showing number of samples

Em Mon, Jul 24, 2017 at 10:51:58AM +0900, Taeung Song escreveu:
> Hi Arnaldo,
> 
> Sorry, I'm too late.
> 
> On 07/21/2017 08:24 PM, Arnaldo Carvalho de Melo wrote:
> > Em Fri, Jul 21, 2017 at 06:41:29PM +0900, Taeung Song escreveu:
> > > On 07/21/2017 04:19 AM, Arnaldo Carvalho de Melo wrote:
> > > > Em Thu, Jul 20, 2017 at 06:36:55AM +0900, Taeung Song escreveu:
> > > > > Currently the --show-total-period option of perf-annotate
> > > > > is different from perf-report's.
> > 
> > > > > For example, perf-report ordinarily shows period and number of samples.
> > 
> > > > >    # Overhead       Samples        Period  Command  Shared Object   Symbol
> > > > >         9.83%           102      84813704  test     test            [.] knapsack
> > 
> > > > But this is not what this patch does, it is still doing too many things,
> > > > it should first add sample to those function signatures, leaving the
> > > > "meat" to a followup patch, where we will not be distracted with
> > > > infrastructure needed to do what you describe in the changelog.
> > 
> > > > I'm doing it here this time, please look at the result, later.
> > > ok, I'm waiting for it.
> > > And if you give me some sketchy code, that's fine.
> > > If you do, I'll remake this patch based on the result. :)
> > 
> > Take a look at the acme/tmp_perf/core, that is where I got yesterday.
> > 
> > - Arnaldo
> > 
> 
> I fetched all branch of your repository, but it don't seem to be pushed.
> 
> $ git remote get-url acme
> git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git
> 
> $ git branch -a | grep acme | grep tmp | grep core
>   remotes/acme/tmp.perf/core
>   remotes/acme/tmp_perf.core
> 
> $ git show tmp.perf/core | head -3
> commit 4827c52cd001e208704ab733a389c96ae2e70e5b
> Author: Andi Kleen <ak@...ux.intel.com>
> Date:   Fri Jul 21 12:25:57 2017 -0700

The one above, look further down, from 896bccd3cb8d to 0321d0281cbb,
there are some more missing, but the ones below should be ready for
sending to Ingo, which I plan to do today.

4827c52cd001 perf jevents: Make build fail on JSON parse error
768750b250b4 perf top: Support lookup of symbols in other mount namespaces.
bd09c1d5f473 perf stat: Use group read for event groups
b9830d226aae perf evsel: Add read_counter() method
e9c58e8b74b8 perf evsel: Add read_size method
b1f952a065d6 perf evsel: Add verbose output for sys_perf_event_open fallback
1321cb6fb1ac perf jvmti: Fix linker error when libelf config is disabled
27cf8ae9ac36 perf annotate: Process tracing data in pipe mode
76dd07b982e0 perf tools: Add EXCLUDE_EXTLIBS and EXTRA_PERFLIBS to makefile
f246e8b7f34e perf cgroup: Fix refcount usage
60cdc09e7d77 perf report: Fix kernel symbol adjustment for s390x
0321d0281cbb perf annotate stdio: Fix --show-total-period
ecd5f9959d2c perf annotate: Do not overwrite sample->period
461c17f00f40 perf annotate: Store the sample period in each histogram bucket
bab89f6aed7e perf hists: Pass perf_sample to __symbol__inc_addr_samples()
8158683da3d3 perf annotate: Rename 'sum' to 'nr_samples' in struct sym_hist
896bccd3cb8d perf annotate: Introduce struct sym_hist_entry

> $ git show tmp_perf.core | head -3
> commit 3331778eb08a50cec959da933c040bd7fbdde396
> Author: Adrian Hunter <adrian.hunter@...el.com>
> Date:   Thu Jul 31 09:00:56 2014 +0300
> 
> 
> Thanks,
> Taeung