linux-kernel - Re: [PATCH] perf tool: Carve out ctype.h et al

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Date:	Wed, 25 Jun 2014 22:38:36 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Jiri Olsa <jolsa@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...radead.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Robert Richter <rric@...nel.org>,
	David Ahern <dsahern@...il.com>,
	Namhyung Kim <namhyung@...il.com>,
	Jean Pihet <jean.pihet@...aro.org>
Subject: Re: [PATCH] perf tool: Carve out ctype.h et al

On Wed, Jun 25, 2014 at 09:25:47PM +0200, Jiri Olsa wrote:
> heya,
> got following error;
> 
> [jolsa@...va perf]$ make
>   BUILD:   Doing 'make -j4' parallel build
>   CC       util/pmu.o
>   CC       util/parse-events-flex.o
>   SUBDIR   /home/jolsa/kernel.org/linux-perf/tools/lib/traceevent/
> util/pmu.c: In function ‘wordwrap’:
> util/pmu.c:788:3: error: implicit declaration of function ‘isspace’ [-Werror=implicit-function-declaration]
>    while (isspace(*s))
>    ^
> cc1: all warnings being treated as errors
> make[1]: *** [util/pmu.o] Error 1
> make[1]: *** Waiting for unfinished jobs....
> make: *** [all] Error 2

This is a perfect example why doing this piecewise is the only way to
go! And even that is not easy:

I don't have this line in util/pmu.c:788 so I can't trigger it:

   782  bool pmu_have_event(const char *pname, const char *name)
   783  {
   784          struct perf_pmu *pmu;
   785          struct perf_pmu_alias *alias;
   786  
   787          pmu = NULL;
   788          while ((pmu = perf_pmu__scan(pmu)) != NULL) {
   789                  if (strcmp(pname, pmu->name))
   790                          continue;
   791                  list_for_each_entry(alias, &pmu->aliases, list)
   792                          if (!strcmp(alias->name, name))
   793                                  return true;
   794          }
   795          return false;
   796  }

So, I've done the patch ontop of those branches:

commit 279a8cc64fada4b0e7ebf4e4631d67c8ca715f27
Merge: 9724066c49ba 1545d8aca9ac
Author: Borislav Petkov <bp@...e.de>
Date:   Tue Jun 24 15:45:51 2014 +0200

    Merge remote-tracking branch 'jolsa/perf/core' into ptool-v0.5

commit 9724066c49baab314a0c3d3f84ec102cd0f76b86
Merge: ecdac96899e3 a93f0e551af9
Author: Borislav Petkov <bp@...e.de>
Date:   Tue Jun 24 15:45:44 2014 +0200

    Merge remote-tracking branch 'jolsa/perf/urgent' into ptool-v0.5

commit a93f0e551af9e194db38bfe16001e17a3a1d189a
Author: Simon Que <sque@...omium.org>
Date:   Mon Jun 16 11:32:09 2014 -0700

    perf symbols: Get kernel start address by symbol name

by checking out acme/perf/core first.

So, guys, can we agree on a common branch to apply patches ontop please?

Thanks a lot.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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