linux-kernel - Re: [PATCH] tools: Rename _

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Date:   Thu, 6 Apr 2023 18:31:32 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     "Liam R. Howlett" <Liam.Howlett@...cle.com>
Cc:     Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
        "linux-perf-users@...r.kernel.org" <linux-perf-users@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "llvm@...ts.linux.dev" <llvm@...ts.linux.dev>,
        "linux-sparse@...r.kernel.org" <linux-sparse@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Miguel Ojeda <ojeda@...nel.org>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>
Subject: Re: [PATCH] tools: Rename __fallthrough to fallthrough

Em Thu, Apr 06, 2023 at 06:11:03PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Thu, Apr 06, 2023 at 10:02:57PM +0200, Miguel Ojeda escreveu:
> > On Thu, Apr 6, 2023 at 9:58 PM Liam R. Howlett <Liam.Howlett@...cle.com> wrote:
> > >
> > > Any chance of this being accepted?  I'm looking to use this in the radix
> > > test suite and would rather not duplicate code.
> > 
> > That would be up to the `tools/perf/` maintainers.
> 
> Thanks, applied,

So, I noticed some missing conversions, fixed that, but then when trying
to test build it with:

	make -C tools/perf build-test

I stumbled on this:

             make_with_gtk2: cd . && make GTK2=1 -j32  DESTDIR=/tmp/tmp.5AP8tPJgiT
cd . && make GTK2=1 -j32 DESTDIR=/tmp/tmp.5AP8tPJgiT
  BUILD:   Doing 'make -j32' parallel build
  HOSTCC  fixdep.o
  HOSTLD  fixdep-in.o
<SNIP>
  CC      trace/beauty/ioctl.o
In file included from /usr/lib64/glib-2.0/include/glibconfig.h:9,
                 from /usr/include/glib-2.0/glib/gtypes.h:34,
                 from /usr/include/glib-2.0/glib/galloca.h:34,
                 from /usr/include/glib-2.0/glib.h:32,
                 from /usr/include/glib-2.0/gobject/gbinding.h:30,
                 from /usr/include/glib-2.0/glib-object.h:24,
                 from /usr/include/glib-2.0/gio/gioenums.h:30,
                 from /usr/include/glib-2.0/gio/giotypes.h:30,
                 from /usr/include/glib-2.0/gio/gio.h:28,
                 from /usr/include/gtk-2.0/gdk/gdkapplaunchcontext.h:30,
                 from /usr/include/gtk-2.0/gdk/gdk.h:32,
                 from /usr/include/gtk-2.0/gtk/gtk.h:32,
                 from ui/gtk/gtk.h:8,
                 from ui/gtk/helpline.c:6:
/usr/include/glib-2.0/glib/gmacros.h:637:28: error: missing ')' after "__has_attribute"
  637 | #if g_macro__has_attribute(fallthrough)
      |                            ^~~~~~~~~~~
In file included from /var/home/acme/git/perf-tools-next/tools/include/linux/compiler_types.h:36,
                 from /var/home/acme/git/perf-tools-next/tools/include/linux/compiler.h:5,
                 from /var/home/acme/git/perf-tools-next/tools/include/linux/build_bug.h:5,
                 from /var/home/acme/git/perf-tools-next/tools/include/linux/kernel.h:8,
                 from ui/gtk/helpline.c:4:
/var/home/acme/git/perf-tools-next/tools/include/linux/compiler-gcc.h:16:55: error: missing binary operator before token "("
   16 | # define fallthrough                    __attribute__((__fallthrough__))
      |                                                       ^
/usr/include/glib-2.0/glib/gmacros.h:637:28: note: in expansion of macro ‘fallthrough’
  637 | #if g_macro__has_attribute(fallthrough)
      |                            ^~~~~~~~~~~
  CC      trace/beauty/kcmp.o
  CC      bench/sched-messaging.o
  CC      trace/beauty/mount_flags.o


I'm trying to fix this now...

- Arnaldo