linux-kernel - Re: [RFC PATCH next-20200930] treewide: Convert macro and uses of __section(foo) to _

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Date:   Tue, 6 Oct 2020 00:34:35 +0000
From:   Joel Stanley <joel@....id.au>
To:     Joe Perches <joe@...ches.com>,
        Michael Ellerman <mpe@...erman.id.au>
Cc:     Segher Boessenkool <segher@...nel.crashing.org>,
        Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
        Kees Cook <keescook@...omium.org>,
        "Paul E . McKenney" <paulmck@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        Josh Triplett <josh@...htriplett.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        LKML <linux-kernel@...r.kernel.org>, rcu@...r.kernel.org,
        Clang-Built-Linux ML <clang-built-linux@...glegroups.com>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Sedat Dilek <sedat.dilek@...il.com>,
        Paul Mackerras <paulus@...ba.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [RFC PATCH next-20200930] treewide: Convert macro and uses of
 __section(foo) to __section("foo")

On Thu, 1 Oct 2020 at 20:19, Joe Perches <joe@...ches.com> wrote:
>
> On Thu, 2020-10-01 at 14:39 -0500, Segher Boessenkool wrch/ote:
> > Hi!
> >
> > On Thu, Oct 01, 2020 at 12:15:39PM +0200, Miguel Ojeda wrote:
> > > > So it looks like the best option is to exclude these
> > > > 2 files from conversion.
> > >
> > > Agreed. Nevertheless, is there any reason arch/powerpc/* should not be
> > > compiling cleanly with compiler.h? (CC'ing the rest of the PowerPC
> > > reviewers and ML).
> >
> > You need to #include compiler_types.h to get this #define?
>
> Actually no, you need to add
>
> #include <linux/compiler_attributes.h>
>
> to both files and then it builds properly.
>
> Ideally though nothing should include this file directly.

arch/powerpc/boot is the powerpc wrapper, and it's not built with the
same includes or flags as the rest of the kernel. It doesn't include
any of the headers in the top level include/ directory for hysterical
raisins.

The straightforward fix would be to exclude this directory from your script.

Cheers,

Joel