The patch titled
Subject: locking: add lockevent_read() prototype
has been added to the -mm mm-nonmm-unstable branch. Its filename is
locking-add-lockevent_read-prototype.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/locking-add-lockevent_read-prototype.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@xxxxxxxx>
Subject: locking: add lockevent_read() prototype
Date: Wed, 17 May 2023 15:10:54 +0200
lockevent_read() has a __weak definition and the only caller in
kernel/locking/lock_events.c, plus a strong definition in qspinlock_stat.h
that overrides it, but no other declaration. This causes a W=1 warning:
kernel/locking/lock_events.c:61:16: error: no previous prototype for 'lockevent_read' [-Werror=missing-prototypes]
Add shared prototype to avoid the warnings.
Link: https://lkml.kernel.org/r/20230517131102.934196-7-arnd@xxxxxxxxxx
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Boqun Feng <boqun.feng@xxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Dennis Zhou <dennis@xxxxxxxxxx>
Cc: Eric Paris <eparis@xxxxxxxxxx>
Cc: Heiko Carstens <hca@xxxxxxxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Michal Simek <monstr@xxxxxxxxx>
Cc: Palmer Dabbelt <palmer@xxxxxxxxxxx>
Cc: Paul Moore <paul@xxxxxxxxxxxxxx>
Cc: Pavel Machek <pavel@xxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Rafael J. Wysocki <rafael@xxxxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Waiman Long <longman@xxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/locking/lock_events.h | 4 ++++
1 file changed, 4 insertions(+)
--- a/kernel/locking/lock_events.h~locking-add-lockevent_read-prototype
+++ a/kernel/locking/lock_events.h
@@ -57,4 +57,8 @@ static inline void __lockevent_add(enum
#define lockevent_cond_inc(ev, c)
#endif /* CONFIG_LOCK_EVENT_COUNTS */
+
+ssize_t lockevent_read(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos);
+
#endif /* __LOCKING_LOCK_EVENTS_H */
_
Patches currently in -mm which might be from arnd@xxxxxxxx are
radix-tree-move-declarations-to-header.patch
decompressor-provide-missing-prototypes.patch
kasan-add-kasan_tag_mismatch-prototype.patch
kasan-use-internal-prototypes-matching-gcc-13-builtins.patch
mm-percpu-unhide-pcpu_embed_first_chunk-prototype.patch
mm-page_poison-always-declare-__kernel_map_pages-function.patch
mm-sparse-mark-populate_section_memmap-static.patch
lib-devmem_is_allowed-include-linux-ioh.patch
locking-add-lockevent_read-prototype.patch
panic-hide-unused-global-functions.patch
panic-make-function-declarations-visible.patch
kunit-include-debugfs-header-file.patch
init-consolidate-prototypes-in-linux-inith.patch
init-move-cifs_root_data-prototype-into-linux-mounth.patch
thread_info-move-function-declarations-to-linux-thread_infoh.patch
time_namespace-always-provide-arch_get_vdso_data-prototype-for-vdso.patch
