+ initramfs-fix-clang-build-failure.patch added to -mm tree

+ initramfs-fix-clang-build-failure.patch added to -mm tree

[akpm]

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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------------------------------------------------------
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