linux-kernel - Re: [GIT PULL 00/20] perf/core improvements

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Message-ID: <20120625082225.GB24512@gmail.com>
Date:	Mon, 25 Jun 2012 10:22:25 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Arnaldo Carvalho de Melo <acme@...radead.org>,
	linux-kernel@...r.kernel.org, Andi Kleen <andi@...stfloor.org>,
	Arun Sharma <asharma@...com>,
	Benjamin Redelings <benjamin.redelings@...cent.org>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Cyrill Gorcunov <gorcunov@...nvz.org>,
	David Ahern <dsahern@...il.com>,
	"Frank Ch. Eigler" <fche@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>, Jiri Olsa <jolsa@...hat.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Mike Galbraith <efault@....de>,
	Namhyung Kim <namhyung.kim@....com>,
	Paul Mackerras <paulus@...ba.org>,
	Pekka Enberg <penberg@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Robert Richter <robert.richter@....com>,
	Shan Wei <davidshan@...cent.com>,
	Stephane Eranian <eranian@...gle.com>,
	Tom Zanussi <tzanussi@...il.com>
Subject: Re: [GIT PULL 00/20] perf/core improvements


* Namhyung Kim <namhyung@...nel.org> wrote:

> Hi, Ingo
> 
> On Wed, 20 Jun 2012 16:49:02 +0200, Ingo Molnar wrote:
> > Well, 'make' should notice that they are stale or should 
> > regenerate them all the time.
> >
> 
> Could you check the patch below does it?
> 
> 
> diff --git a/tools/lib/traceevent/Makefile b/tools/lib/traceevent/Makefile
> index 3d69aa9ff51e..42f018e15f36 100644
> --- a/tools/lib/traceevent/Makefile
> +++ b/tools/lib/traceevent/Makefile
> @@ -250,8 +250,12 @@ endef
>  all_objs := $(sort $(ALL_OBJS))
>  all_deps := $(all_objs:%.o=.%.d)
>  
> +# let .d file also depends on the source and header files
>  define check_deps
> -               $(CC) -M $(CFLAGS) $< > $@;
> +               @set -e; $(RM) $@; \
> +               $(CC) -M $(CFLAGS) $< > $@...$$; \
> +               sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@...$$ > $@; \
> +               $(RM) $@...$$
>  endef

Yeah, something like this should do the trick.

Thanks,

	Ingo
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