From: akpm@linux-foundation.org
To: arnd@arndb.de, brho@google.com, mm-commits@vger.kernel.org,
natechancellor@gmail.com, ndesaulniers@google.com
Subject: + initramfs-fix-clang-build-failure.patch added to -mm tree
Date: Fri, 04 Dec 2020 16:35:39 -0800 [thread overview]
Message-ID: <20201205003539.xRLUku27T%akpm@linux-foundation.org> (raw)
The patch titled
Subject: initramfs: fix clang build failure
has been added to the -mm tree. Its filename is
initramfs-fix-clang-build-failure.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/initramfs-fix-clang-build-failure.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/initramfs-fix-clang-build-failure.patch
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
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------------------------------------------------------
From: Arnd Bergmann <arnd@arndb.de>
Subject: initramfs: fix clang build failure
There is only one function in init/initramfs.c that is in the .text
section, and it is marked __weak. When building with clang-12 and the
integrated assembler, this leads to a bug with recordmcount:
./scripts/recordmcount "init/initramfs.o"
Cannot find symbol for section 2: .text.
init/initramfs.o: failed
I'm not quite sure what exactly goes wrong, but I notice that this
function is only ever called from an __init function, and normally
inlined. Marking it __init as well is clearly correct and it leads to
recordmcount no longer complaining.
Link: https://lkml.kernel.org/r/20201204165742.3815221-1-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Barret Rhoden <brho@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
init/initramfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/init/initramfs.c~initramfs-fix-clang-build-failure
+++ a/init/initramfs.c
@@ -535,7 +535,7 @@ extern unsigned long __initramfs_size;
#include <linux/initrd.h>
#include <linux/kexec.h>
-void __weak free_initrd_mem(unsigned long start, unsigned long end)
+void __weak __init free_initrd_mem(unsigned long start, unsigned long end)
{
#ifdef CONFIG_ARCH_KEEP_MEMBLOCK
unsigned long aligned_start = ALIGN_DOWN(start, PAGE_SIZE);
_
Patches currently in -mm which might be from arnd@arndb.de are
selftest-fpu-avoid-clang-warning.patch
kbuild-avoid-static_assert-for-genksyms.patch
initramfs-fix-clang-build-failure.patch
elfcore-fix-building-with-clang.patch
reply other threads:[~2020-12-05 0:36 UTC|newest]
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