linux-kernel - Re: [PATCH v2 01/10] perf tools: Integrating the CoreSight decoding library

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Date:   Fri, 19 Jan 2018 08:24:56 -0700
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        namhyung@...nel.org, Adrian Hunter <adrian.hunter@...el.com>,
        Mike Leach <mike.leach@....com>, suzuki.poulosi@....com,
        Kim Phillips <kim.phillips@....com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 01/10] perf tools: Integrating the CoreSight decoding library

On 19 January 2018 at 08:12, Jiri Olsa <jolsa@...hat.com> wrote:
> On Fri, Jan 19, 2018 at 11:58:19AM -0300, Arnaldo Carvalho de Melo wrote:
>> Em Thu, Jan 18, 2018 at 03:27:43PM +0100, Jiri Olsa escreveu:
>> > On Thu, Jan 18, 2018 at 11:14:23AM -0300, Arnaldo Carvalho de Melo wrote:
>> > > Em Thu, Jan 18, 2018 at 02:59:48PM +0100, Jiri Olsa escreveu:
>> > > > On Thu, Jan 18, 2018 at 10:41:39AM -0300, Arnaldo Carvalho de Melo wrote:
>> > > > >       Shouldn't libopencsd be treated like libbabeltrace was before
>> > > > > the required version was widely available in distros?
>> > >
>> > > > >       I.e. these csets should have the rationale for that:
>> > >
>> > > > > Enabling it once it became widely available:
>> > >
>> > > > >    24787afbcd01 ("perf tools: Enable LIBBABELTRACE by default")
>> > >
>> > > > > Disabling it because we would need to get things from tarballs/git
>> > > > > repos, build it in our machines, as requested by Ingo:
>> > >
>> > > > >   6ab2b762befd ("perf build: Disable libbabeltrace check by default")
>> > > >
>> > > > I think at that time we did not have a way to hide the check,
>> > > > now we have FEATURE_DISPLAY seprated so we can still check
>> > > > for it, but users won't be bothered with [ FAIL ] output
>> > >
>> > > Ok, users won't be bothered with the fail output, but we tried hard to
>> > > get the build fast by having it only test for things that are widely
>> > > available, right? I.e. if we know something is not widely available then
>> > > we better not try to build with it and get faster builds, wasn't that
>> > > part of the rationale in the babeltrace case?
>> > >
>> > > If one has to build from sources some library, then its not a problem to
>> > > have in the make command line a LIBOPENCSD=1 switch?
>> >
>> > right, we can do it like that
>>
>> So I'm applying v2 and we can go on from there, to make progress, ok?
>> I'm adding your Acked-by to all but the build ones, ok?
>
> I think v3 was in better shape.. wrt tabs and overall display
>
> jirka

Jiri is correct - V3 should be considered.