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

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Message-ID: <20191206150455.GC31721@krava>
Date:   Fri, 6 Dec 2019 16:04:55 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
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

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

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
>