linux-kernel - Re: [PATCH 5/9] perf tools: Introduce 'P' modifier

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Date:	Tue, 6 Oct 2015 09:01:38 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	Jiri Olsa <jolsa@...nel.org>, lkml <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	"Liang, Kan" <kan.liang@...el.com>, Don Zickus <dzickus@...hat.com>
Subject: Re: [PATCH 5/9] perf tools: Introduce 'P' modifier

On Mon, Oct 05, 2015 at 04:20:40PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Mon, Oct 05, 2015 at 08:06:05PM +0200, Jiri Olsa escreveu:
> > The 'P' will cause the event to get maximum possible
> > detected precise level.
> > 
> > Following record:
> >   $ perf record -e cycles:P ...
> > 
> > will detect maximum precise level for 'cycles' event
> > and use it.
> 
> I had to do a 'make -C tools/perf clean' to get this to work, i.e. it is
> not noticing that the parser files were changed and thus need to run
> again, can you please take a look?

can't see that:

[jolsa@...va perf]$ make
  BUILD:   Doing 'make -j4' parallel build
  CC       util/parse-events.o
  LD       util/libperf-in.o
  LD       libperf-in.o
  AR       libperf.a
  LINK     perf
  LINK     libperf-gtk.so
[jolsa@...va perf]$ touch util/parse-events.l 
[jolsa@...va perf]$ make
  BUILD:   Doing 'make -j4' parallel build
  FLEX     util/parse-events-flex.c
  CC       util/parse-events-flex.o
  CC       util/parse-events.o
  LD       util/libperf-in.o
  LD       libperf-in.o
  AR       libperf.a
  LINK     perf
  LINK     libperf-gtk.so
[jolsa@...va perf]$ touch util/parse-events.y 
[jolsa@...va perf]$ make
  BUILD:   Doing 'make -j4' parallel build
  BISON    util/parse-events-bison.c
  FLEX     util/parse-events-flex.c
  CC       util/parse-events-bison.o
  CC       util/parse-events.o
  CC       util/parse-events-flex.o
  LD       util/libperf-in.o
  LD       libperf-in.o
  AR       libperf.a
  LINK     perf
  LINK     libperf-gtk.so
[jolsa@...va linux-perf]$ make -C tools/perf
make: Entering directory '/home/jolsa/kernel/linux-perf/tools/perf'
  BUILD:   Doing 'make -j4' parallel build
  CC       util/parse-events.o
  LD       util/libperf-in.o
  LD       libperf-in.o
  AR       libperf.a
  LINK     perf
  LINK     libperf-gtk.so
make: Leaving directory '/home/jolsa/kernel/linux-perf/tools/perf'
[jolsa@...va linux-perf]$ make -C tools/perf
make: Entering directory '/home/jolsa/kernel/linux-perf/tools/perf'
  BUILD:   Doing 'make -j4' parallel build
  BISON    util/parse-events-bison.c
  FLEX     util/parse-events-flex.c
  CC       util/parse-events-bison.o
  CC       util/parse-events.o
  CC       util/parse-events-flex.o
  LD       util/libperf-in.o
  LD       libperf-in.o
  AR       libperf.a
  LINK     perf
  LINK     libperf-gtk.so
make: Leaving directory '/home/jolsa/kernel/linux-perf/tools/perf'
[jolsa@...va linux-perf]$ make -C tools/perf
make: Entering directory '/home/jolsa/kernel/linux-perf/tools/perf'
  BUILD:   Doing 'make -j4' parallel build
  FLEX     util/parse-events-flex.c
  CC       util/parse-events-flex.o
  CC       util/parse-events.o
  LD       util/libperf-in.o
  LD       libperf-in.o
  AR       libperf.a
  LINK     perf
  LINK     libperf-gtk.so
make: Leaving directory '/home/jolsa/kernel/linux-perf/tools/perf'


jirka
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