linux-kernel - Re: [PATCH 22/24] perf tools: Build programs to copy 32-bit compatibility VDSOs

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Date:	Wed, 17 Sep 2014 11:52:07 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Adrian Hunter <adrian.hunter@...el.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	linux-kernel@...r.kernel.org, David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Namhyung Kim <namhyung@...il.com>,
	Paul Mackerras <paulus@...ba.org>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 22/24] perf tools: Build programs to copy 32-bit
 compatibility VDSOs

Em Tue, Sep 16, 2014 at 09:59:33AM +0300, Adrian Hunter escreveu:
> On 09/15/2014 06:50 PM, Arnaldo Carvalho de Melo wrote:
> > Em Mon, Sep 15, 2014 at 12:47:52PM -0300, Arnaldo Carvalho de Melo escreveu:
> >> Em Fri, Aug 15, 2014 at 10:08:57PM +0300, Adrian Hunter escreveu:
> >>
> >>> perf tools copy VDSO out of memory.  However, on 64-bit machines there
> >>> may be 32-bit compatibility VDOs also.  To copy those requires
> >>> separate 32-bit executables.  This patch adds to the build additional
> >>> programs perf-read-vdso32 and perf-read-vdsox32 for 32-bit and x32
> >>> respectively.
> >>  
> >>> Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
> >> <SNIP>
> >>>  tools/perf/config/feature-checks/test-compile.c |  4 +++
> >> <SNIP>
> >>>  8 files changed, 149 insertions(+), 37 deletions(-)
> >> <SNIP>
> >>>  create mode 100644 tools/perf/config/feature-checks/test-compile.c
> >> <SNIP>
> >>
> >>
> >> In resolving conflicts that happen because I haven't merged some other
> >> files (thread_stack, etC) I noticed that this patch introduces something
> >> that is explicitely listed in a .gitignore file:
> >>
> >> [acme@zoo linux]$ git show d316f16dddd8c7780c727bbd507338e4147c9280
> >> commit d316f16dddd8c7780c727bbd507338e4147c9280
> >> Author: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
> >> Date:   Fri Aug 15 22:08:59 2014 +0300
> >>
> >>     perf tools: Add feature checks to .gitignore
> >>
> >> <SNIP>
> >>
> >> +++ b/tools/perf/.gitignore
> >> @@ -24,3 +24,4 @@ config.mak.autogen
> >>  *-flex.*
> >>  *.pyc
> >>  *.pyo
> >> +config/feature-checks/test-*
> >> [acme@zoo linux]$
> >>
> >>
> >> So I think we should use some different name for this test-compile.c
> >> file?
> 
> The name is ok.

Ok
 
> >>
> >> I'll leave those two csets out of this pull req, so that you can rebase
> >> what is left on top of what is being merged and we can do one more
> >> progress step in having all this merged, ok?
> > 
> > Since we can't ignore all test- prefixed files there, I'm removing the
> > patch that added it to .gitignore as well:
> > 
> > commit d316f16dddd8c7780c727bbd507338e4147c9280
> > Author: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
> > Date:   Fri Aug 15 22:08:59 2014 +0300
> > 
> > Aftewards I'll revisit this, because without this .gitignore patch I
> > think your patch will be ok.
> 
> The .gitignore patch is wrong.  I picked it up because Alex had it in
> his tree but it must be very old because it was superseded by:
> 
> commit 56560ec692c142bb9ee404764e3b67999031ad19
> Author: Chunwei Chen <tuxoko@...il.com>
> Date:   Sat Dec 21 13:48:11 2013 +0800
> 
>     perf config: Ignore generated files in feature-checks
>     
>     1. Rename the test-* binary files to test-*.bin for easier pattern matching as
>        suggested by Ingo.
>     2. Ignore *.bin and *.d files.
>     
>     Signed-off-by: Chunwei Chen <tuxoko@...il.com>
>     Reviewed-by: Ingo Molnar <mingo@...nel.org>
>     Acked-by: Jiri Olsa <jolsa@...hat.com>
>     Cc: Ingo Molnar <mingo@...nel.org>
>     Cc: Jiri Olsa <jolsa@...hat.com>
>     Link: http://lkml.kernel.org/r/52B52B9B.50708@gmail.com
>     Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>

Thanks, I'll fix this up.

- Arnaldo
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