linux-kernel - Re: [GIT PULL 0/6] perf/urgent fixes

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Date:   Fri, 6 Dec 2019 12:35:09 -0300
From:   Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To:     Jiri Olsa <jolsa@...hat.com>
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>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        Adrian Hunter <adrian.hunter@...el.com>,
        Ravi Bangoria <ravi.bangoria@...ux.ibm.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [GIT PULL 0/6] perf/urgent fixes

Em Fri, Dec 06, 2019 at 04:04:55PM +0100, Jiri Olsa escreveu:
> On Fri, Dec 06, 2019 at 11:43:54AM -0300, Arnaldo Carvalho de Melo wrote:
> > Em Fri, Dec 06, 2019 at 03:25:16PM +0100, Jiri Olsa escreveu:
> > > On Fri, Dec 06, 2019 at 08:57:01AM +0100, Ingo Molnar wrote:
> > > 
> > > SNIP
> > > 
> > > > >  tools/include/uapi/drm/drm.h      |   3 +-
> > > > >  tools/include/uapi/drm/i915_drm.h | 128 +++++++++++++++++++++++++++++++++++++-
> > > > >  tools/perf/builtin-inject.c       |  13 +---
> > > > >  tools/perf/builtin-report.c       |   8 +++
> > > > >  tools/perf/util/sort.c            |  16 +++--
> > > > >  5 files changed, 147 insertions(+), 21 deletions(-)
> > > > 
> > > > Pulled, thanks a lot Arnaldo!
> > > > 
> > > > JFYI, on my system the default perf/urgent build still has this noise 
> > > > generated by util/parse-events.y and util/expr.y:
> > > > 
> > > >   util/parse-events.y:1.1-12: warning: deprecated directive, use ‘%define api.pure’ [-Wdeprecated]
> > > >       1 | %pure-parser
> > > >       | ^~~~~~~~~~~~
> > > >   util/parse-events.y: warning: fix-its can be applied.  Rerun with option '--update'. [-Wother]
> > > >   util/expr.y:15.1-12: warning: deprecated directive, use ‘%define api.pure’ [-Wdeprecated]
> > > >      15 | %pure-parser
> > > >       | ^~~~~~~~~~~~
> > > >   util/expr.y: warning: fix-its can be applied.  Rerun with option '--update'. [-Wother]
> > > 
> > > just saw it in fedora 31 with new bison, change below
> > > should fix it, I'll post it with other fixes later
> > 
> > As I explained to Ingo, this will make it fail with older systems, for
> > now this is just a warning, thus I've not been eager to get this merged,
> > Andi alredy submitted this, for instance.
> > 
> > Is there some way to have some sort of ifdef based on bison's version so
> > that we can have both?
> 
> I see, I guess we could use one or another based on
> bison version with macro

If you could do that, that would be great, the attempt may well
enlighten us if that is possible and if not, then, oh well, I can just
update bison on these older systems and keep a note in my container
definition files :-)

- Arnaldo
 
> jirka
> 
> > 
> > At some point I'll just bite the bullet and stop testing on such older
> > systems, but while this is not strictly needed...
> > 
> > - Arnaldo
> >  
> > > jirka
> > > 
> > > ---
> > > diff --git a/tools/perf/util/expr.y b/tools/perf/util/expr.y
> > > index f9a20a39b64a..4ef801334b9d 100644
> > > --- a/tools/perf/util/expr.y
> > > +++ b/tools/perf/util/expr.y
> > > @@ -12,7 +12,7 @@
> > >  #define MAXIDLEN 256
> > >  %}
> > >  
> > > -%pure-parser
> > > +%define api.pure
> > >  %parse-param { double *final_val }
> > >  %parse-param { struct parse_ctx *ctx }
> > >  %parse-param { const char **pp }
> > > diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
> > > index e2eea4e601b4..87a0d11676f0 100644
> > > --- a/tools/perf/util/parse-events.y
> > > +++ b/tools/perf/util/parse-events.y
> > > @@ -1,4 +1,4 @@
> > > -%pure-parser
> > > +%define api.pure
> > >  %parse-param {void *_parse_state}
> > >  %parse-param {void *scanner}
> > >  %lex-param {void* scanner}
> > 
> > -- 
> > 
> > - Arnaldo
> > 

-- 

- Arnaldo