linux-kernel - Re: [GIT PULL] perf tools changes for v6.2: 1st batch

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Date:   Fri, 16 Dec 2022 13:41:24 -0600
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Clark Williams <williams@...hat.com>,
        Kate Carcia <kcarcia@...hat.com>, linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org,
        Adrian Hunter <adrian.hunter@...el.com>,
        Dmitrii Dolgov <9erthalion6@...il.com>,
        Ian Rogers <irogers@...gle.com>,
        James Clark <james.clark@....com>,
        Kang Minchul <tegongkang@...il.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Kautuk Consul <kconsul@...tanamicro.com>,
        Leo Yan <leo.yan@...aro.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Nikita Shubin <n.shubin@...ro.com>,
        Yang Jihong <yangjihong1@...wei.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Andrii Nakryiko <andrii@...nel.org>,
        Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [GIT PULL] perf tools changes for v6.2: 1st batch

On Fri, Dec 16, 2022 at 8:36 AM Arnaldo Carvalho de Melo
<acme@...nel.org> wrote:
>
>         This time there is a trivial resolution of a merge conflict
> related to commit c302378bc157f6a7 ("libbpf: Hashmap interface update to
> allow both long and void* keys/values"), that touched tools/perf/ files.

Normally I'd ask you very sternly to please not resolve merge
conflicts for me, but since I just screwed up another merge due to
being on the road and not having done a full build test, I guess I
will just be quiet this time.

So the real reason for this email is that I get an error like this on
my laptop when trying to build the perf tools:

    INSTALL libbpf_headers
  Traceback (most recent call last):
    File "util/setup.py", line 31, in <module>
      from setuptools import setup, Extension
  ImportError: No module named setuptools
  cp: cannot stat 'python_ext_build/lib/perf*.so': No such file or directory
  make[2]: *** [Makefile.perf:651: python/perf] Error 1
  make[2]: *** Waiting for unfinished jobs....
  make[1]: *** [Makefile.perf:236: sub-make] Error 2
  make: *** [Makefile:70: all] Error 2

and it's not new to this pull - I've seen it before and it's something
stupid I've done.

I think it's a missing package dependency that this laptop then hits.
But considering my previous merge failure, I'm not super-happy about
traveling with a laptop that then can't do this build test.

It would be lovely to have that package dependency - whatever it may
be - tested for explicitly. Hint hint.

           Linus