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List:       linux-mm-commits
Subject:    + gcov-shut-up-missing-prototype-warnings-for-internal-stubs.patch added to mm-nonmm-unstable branch
From:       Andrew Morton <akpm () linux-foundation ! org>
Date:       2023-07-28 18:24:22
Message-ID: 20230728182423.53513C433C7 () smtp ! kernel ! org
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The patch titled
     Subject: gcov: shut up missing prototype warnings for internal stubs
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     gcov-shut-up-missing-prototype-warnings-for-internal-stubs.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/gcov-shut-up-missing-prototype-warnings-for-internal-stubs.patch


This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Arnd Bergmann <arnd@arndb.de>
Subject: gcov: shut up missing prototype warnings for internal stubs
Date: Tue, 25 Jul 2023 14:23:38 +0200

gcov uses global functions that are called from generated code, but these
have no prototype in a header, which causes a W=1 build warning:

kernel/gcov/gcc_base.c:12:6: error: no previous prototype for '__gcov_init' \
[-Werror=missing-prototypes] kernel/gcov/gcc_base.c:40:6: error: no previous \
prototype for '__gcov_flush' [-Werror=missing-prototypes] \
kernel/gcov/gcc_base.c:46:6: error: no previous prototype for '__gcov_merge_add' \
[-Werror=missing-prototypes] kernel/gcov/gcc_base.c:52:6: error: no previous \
prototype for '__gcov_merge_single' [-Werror=missing-prototypes]

Just turn off these warnings unconditionally for the two files that
contain them.

Link: https://lore.kernel.org/all/0820010f-e9dc-779d-7924-49c7df446bce@linux.ibm.com/
Link: https://lkml.kernel.org/r/20230725123042.2269077-1-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Acked-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/gcov/Makefile |    2 ++
 1 file changed, 2 insertions(+)

--- a/kernel/gcov/Makefile~gcov-shut-up-missing-prototype-warnings-for-internal-stubs
+++ a/kernel/gcov/Makefile
@@ -3,4 +3,6 @@ ccflags-y := -DSRCTREE='"$(srctree)"' -D
 
 obj-y := base.o fs.o
 obj-$(CONFIG_CC_IS_GCC) += gcc_base.o gcc_4_7.o
+CFLAGS_gcc_base.o += -Wno-missing-prototypes -Wno-missing-declarations
 obj-$(CONFIG_CC_IS_CLANG) += clang.o
+CFLAGS_clang.o += -Wno-missing-prototypes -Wno-missing-declarations
_

Patches currently in -mm which might be from arnd@arndb.de are

iomem-remove-__weak-ioremap_cache-helper.patch
gcov-shut-up-missing-prototype-warnings-for-internal-stubs.patch


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