The patch titled
Subject: time_namespace: always provide arch_get_vdso_data() prototype for vdso
has been added to the -mm mm-nonmm-unstable branch. Its filename is
time_namespace-always-provide-arch_get_vdso_data-prototype-for-vdso.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/time_namespace-always-provide-arch_get_vdso_data-prototype-for-vdso.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: time_namespace: always provide arch_get_vdso_data() prototype for vdso
Date: Wed, 17 May 2023 15:11:02 +0200
The arch_get_vdso_data() function is defined separately on each
architecture, but only called when CONFIG_TIME_NS is set. If the
definition is a global function, this causes a W=1 warning without
TIME_NS:
arch/x86/entry/vdso/vma.c:35:19: error: no previous prototype for 'arch_get_vdso_data' [-Werror=missing-prototypes]
Move the prototype out of the #ifdef block to reliably turn off that
warning.
Link: https://lkml.kernel.org/r/20230517131102.934196-15-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>
---
include/linux/time_namespace.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/include/linux/time_namespace.h~time_namespace-always-provide-arch_get_vdso_data-prototype-for-vdso
+++ a/include/linux/time_namespace.h
@@ -44,7 +44,6 @@ struct time_namespace *copy_time_ns(unsi
struct time_namespace *old_ns);
void free_time_ns(struct time_namespace *ns);
void timens_on_fork(struct nsproxy *nsproxy, struct task_struct *tsk);
-struct vdso_data *arch_get_vdso_data(void *vvar_page);
struct page *find_timens_vvar_page(struct vm_area_struct *vma);
static inline void put_time_ns(struct time_namespace *ns)
@@ -163,4 +162,6 @@ static inline ktime_t timens_ktime_to_ho
}
#endif
+struct vdso_data *arch_get_vdso_data(void *vvar_page);
+
#endif /* _LINUX_TIMENS_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
