From: Linus Torvalds <torvalds@linux-foundation.org>
To: Nathan Chancellor <nathan@kernel.org>
Cc: "Arnd Bergmann" <arnd@kernel.org>,
"Sudip Mukherjee (Codethink)" <sudipm.mukherjee@gmail.com>,
clang-built-linux <llvm@lists.linux.dev>,
"Alex Deucher" <alexander.deucher@amd.com>,
"Christian König" <christian.koenig@amd.com>,
"Pan, Xinhui" <Xinhui.Pan@amd.com>,
"David Airlie" <airlied@linux.ie>,
"Daniel Vetter" <daniel@ffwll.ch>,
"amd-gfx list" <amd-gfx@lists.freedesktop.org>,
dri-devel <dri-devel@lists.freedesktop.org>,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>
Subject: Re: mainline build failure for x86_64 allmodconfig with clang
Date: Thu, 4 Aug 2022 14:59:01 -0700 [thread overview]
Message-ID: <CAHk-=whpa_FJjvzWdWdSzecTbVtndbQqg35=_o+ohM3X1_xKTA@mail.gmail.com> (raw)
In-Reply-To: <YuwvfsztWaHvquwC@dev-arch.thelio-3990X>
On Thu, Aug 4, 2022 at 1:43 PM Nathan Chancellor <nathan@kernel.org> wrote:
>
> I do note that commit 1b54a0121dba ("drm/amd/display: Reduce stack size
> in the mode support function") did have a workaround for GCC. It appears
> clang will still inline mode_support_configuration(). If I mark it as
> 'noinline', the warning disappears in that file.
That sounds like probably the best option for now. Gcc does not inline
that function (at least for allmodconfig builds in my testing), so if
that makes clang match what gcc does, it seems a reasonable thing to
do.
Linus
WARNING: multiple messages have this Message-ID (diff)
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Nathan Chancellor <nathan@kernel.org>
Cc: "Arnd Bergmann" <arnd@kernel.org>,
"Pan, Xinhui" <Xinhui.Pan@amd.com>,
"David Airlie" <airlied@linux.ie>,
clang-built-linux <llvm@lists.linux.dev>,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
"amd-gfx list" <amd-gfx@lists.freedesktop.org>,
"Christian König" <christian.koenig@amd.com>,
dri-devel <dri-devel@lists.freedesktop.org>,
"Alex Deucher" <alexander.deucher@amd.com>,
"Sudip Mukherjee (Codethink)" <sudipm.mukherjee@gmail.com>
Subject: Re: mainline build failure for x86_64 allmodconfig with clang
Date: Thu, 4 Aug 2022 14:59:01 -0700 [thread overview]
Message-ID: <CAHk-=whpa_FJjvzWdWdSzecTbVtndbQqg35=_o+ohM3X1_xKTA@mail.gmail.com> (raw)
In-Reply-To: <YuwvfsztWaHvquwC@dev-arch.thelio-3990X>
On Thu, Aug 4, 2022 at 1:43 PM Nathan Chancellor <nathan@kernel.org> wrote:
>
> I do note that commit 1b54a0121dba ("drm/amd/display: Reduce stack size
> in the mode support function") did have a workaround for GCC. It appears
> clang will still inline mode_support_configuration(). If I mark it as
> 'noinline', the warning disappears in that file.
That sounds like probably the best option for now. Gcc does not inline
that function (at least for allmodconfig builds in my testing), so if
that makes clang match what gcc does, it seems a reasonable thing to
do.
Linus
WARNING: multiple messages have this Message-ID (diff)
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Nathan Chancellor <nathan@kernel.org>
Cc: "Arnd Bergmann" <arnd@kernel.org>,
"Pan, Xinhui" <Xinhui.Pan@amd.com>,
"David Airlie" <airlied@linux.ie>,
clang-built-linux <llvm@lists.linux.dev>,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
"amd-gfx list" <amd-gfx@lists.freedesktop.org>,
"Christian König" <christian.koenig@amd.com>,
dri-devel <dri-devel@lists.freedesktop.org>,
"Daniel Vetter" <daniel@ffwll.ch>,
"Alex Deucher" <alexander.deucher@amd.com>,
"Sudip Mukherjee (Codethink)" <sudipm.mukherjee@gmail.com>
Subject: Re: mainline build failure for x86_64 allmodconfig with clang
Date: Thu, 4 Aug 2022 14:59:01 -0700 [thread overview]
Message-ID: <CAHk-=whpa_FJjvzWdWdSzecTbVtndbQqg35=_o+ohM3X1_xKTA@mail.gmail.com> (raw)
In-Reply-To: <YuwvfsztWaHvquwC@dev-arch.thelio-3990X>
On Thu, Aug 4, 2022 at 1:43 PM Nathan Chancellor <nathan@kernel.org> wrote:
>
> I do note that commit 1b54a0121dba ("drm/amd/display: Reduce stack size
> in the mode support function") did have a workaround for GCC. It appears
> clang will still inline mode_support_configuration(). If I mark it as
> 'noinline', the warning disappears in that file.
That sounds like probably the best option for now. Gcc does not inline
that function (at least for allmodconfig builds in my testing), so if
that makes clang match what gcc does, it seems a reasonable thing to
do.
Linus
next prev parent reply other threads:[~2022-08-04 21:59 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-04 18:36 mainline build failure for x86_64 allmodconfig with clang Sudip Mukherjee (Codethink)
2022-08-04 18:36 ` Sudip Mukherjee (Codethink)
2022-08-04 18:36 ` Sudip Mukherjee (Codethink)
2022-08-04 18:52 ` Linus Torvalds
2022-08-04 18:52 ` Linus Torvalds
2022-08-04 18:52 ` Linus Torvalds
2022-08-04 19:24 ` Arnd Bergmann
2022-08-04 19:24 ` Arnd Bergmann
2022-08-04 19:24 ` Arnd Bergmann
2022-08-04 20:43 ` Nathan Chancellor
2022-08-04 20:43 ` Nathan Chancellor
2022-08-04 20:43 ` Nathan Chancellor
2022-08-04 21:59 ` Linus Torvalds [this message]
2022-08-04 21:59 ` Linus Torvalds
2022-08-04 21:59 ` Linus Torvalds
2022-08-04 22:43 ` Nathan Chancellor
2022-08-04 22:43 ` Nathan Chancellor
2022-08-04 22:43 ` Nathan Chancellor
2022-08-05 9:46 ` David Laight
2022-08-05 9:46 ` David Laight
2022-08-05 9:46 ` David Laight
2022-08-05 15:32 ` Harry Wentland
2022-08-05 15:32 ` Harry Wentland
2022-08-05 16:16 ` Arnd Bergmann
2022-08-05 16:16 ` Arnd Bergmann
2022-08-05 18:02 ` Nathan Chancellor
2022-08-05 18:02 ` Nathan Chancellor
2022-08-05 18:02 ` Nathan Chancellor
2022-08-05 19:32 ` Arnd Bergmann
2022-08-05 19:32 ` Arnd Bergmann
2022-08-05 19:32 ` Arnd Bergmann
2022-08-07 17:36 ` David Laight
2022-08-07 17:36 ` David Laight
2022-08-07 17:36 ` David Laight
2022-08-07 17:55 ` Linus Torvalds
2022-08-07 17:55 ` Linus Torvalds
2022-08-07 17:55 ` Linus Torvalds
2022-08-18 15:59 ` Nathan Chancellor
2022-08-18 15:59 ` Nathan Chancellor
2022-08-25 22:34 ` Nathan Chancellor
2022-08-25 22:34 ` Nathan Chancellor
2022-08-26 14:31 ` Alex Deucher
2022-08-26 14:31 ` Alex Deucher
2022-08-26 14:31 ` Alex Deucher
2022-08-30 20:38 ` Nathan Chancellor
2022-08-30 20:38 ` Nathan Chancellor
2022-08-30 20:38 ` Nathan Chancellor
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