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
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Arnd Bergmann <arnd@xxxxxxxx>
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@xxxxxxxxxx
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Nathan Chancellor <natechancellor@xxxxxxxxx>
Cc: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
Cc: Barret Rhoden <brho@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxxx 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
