From: Arnd Bergmann <arnd@kernel•org>
To: Andrew Morton <akpm@linux-foundation•org>
Cc: linux-kselftest@vger•kernel.org,
"Rafael J. Wysocki" <rafael@kernel•org>,
Peter Zijlstra <peterz@infradead•org>,
Catalin Marinas <catalin.marinas@arm•com>,
linux-mips@vger•kernel.org, linux-mm@kvack•org,
Pavel Machek <pavel@ucw•cz>, Christoph Lameter <cl@linux•com>,
Will Deacon <will@kernel•org>,
linux-riscv@lists•infradead.org, linux-s390@vger•kernel.org,
Paul Moore <paul@paul-moore•com>,
linux-sh@vger•kernel.org, Helge Deller <deller@gmx•de>,
x86@kernel•org, Russell King <linux@armlinux•org.uk>,
Ingo Molnar <mingo@redhat•com>, Dennis Zhou <dennis@kernel•org>,
Boqun Feng <boqun.feng@gmail•com>, Arnd Bergmann <arnd@arndb•de>,
linux-pm@vger•kernel.org, Heiko Carstens <hca@linux•ibm.com>,
Waiman Long <longman@redhat•com>,
Thomas Gleixner <tglx@linutronix•de>,
linux-arm-kernel@lists•infradead.org, kunit-dev@googlegroups•com,
Michal Simek <monstr@monstr•eu>,
Thomas Bogendoerfer <tsbogend@alpha•franken.de>,
linux-parisc@vger•kernel.org, linux-kernel@vger•kernel.org,
Eric Paris <eparis @redhat.com>,
audit@vger•kernel.org, Palmer Dabbelt <palmer@dabbelt•com>,
Tejun Heo <tj@kernel•org>,
linuxppc-dev@lists•ozlabs.org
Subject: [PATCH 02/14] mm: page_poison: always declare __kernel_map_pages() function
Date: Wed, 17 May 2023 15:10:50 +0200 [thread overview]
Message-ID: <20230517131102.934196-3-arnd@kernel.org> (raw)
In-Reply-To: <20230517131102.934196-1-arnd@kernel.org>
From: Arnd Bergmann <arnd@arndb•de>
The __kernel_map_pages() function is mainly used for
CONFIG_DEBUG_PAGEALLOC, but has a number of architecture specific
definitions that may also be used in other configurations, as well
as a global fallback definition for architectures that do not support
DEBUG_PAGEALLOC.
When the option is disabled, any definitions without the prototype
cause a warning:
mm/page_poison.c:102:6: error: no previous prototype for '__kernel_map_pages' [-Werror=missing-prototypes]
The function is a trivial nop here, so just declare it anyway
to avoid the warning.
Signed-off-by: Arnd Bergmann <arnd@arndb•de>
---
include/linux/mm.h | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 27ce77080c79..e95d7c575ea6 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -3453,13 +3453,12 @@ static inline bool debug_pagealloc_enabled_static(void)
return static_branch_unlikely(&_debug_pagealloc_enabled);
}
-#ifdef CONFIG_DEBUG_PAGEALLOC
/*
* To support DEBUG_PAGEALLOC architecture must ensure that
* __kernel_map_pages() never fails
*/
extern void __kernel_map_pages(struct page *page, int numpages, int enable);
-
+#ifdef CONFIG_DEBUG_PAGEALLOC
static inline void debug_pagealloc_map_pages(struct page *page, int numpages)
{
if (debug_pagealloc_enabled_static())
--
2.39.2
next prev parent reply other threads:[~2023-05-17 13:14 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-17 13:10 [PATCH 00/14] mm/init/kernel: missing-prototypes warnings Arnd Bergmann
2023-05-17 13:10 ` [PATCH 01/14] mm: percpu: unhide pcpu_embed_first_chunk prototype Arnd Bergmann
2023-05-17 13:10 ` Arnd Bergmann [this message]
2023-05-17 13:10 ` [PATCH 03/14] mm: sparse: mark populate_section_memmap() static Arnd Bergmann
2023-05-17 13:10 ` [PATCH 04/14] audit: avoid missing-prototype warnings Arnd Bergmann
2023-05-17 14:33 ` [PATCH 4/14] " Paul Moore
2023-05-17 14:51 ` Arnd Bergmann
2023-05-17 15:51 ` Paul Moore
2023-05-17 13:10 ` [PATCH 05/14] lib: devmem_is_allowed: include linux/io.h Arnd Bergmann
2023-05-17 13:10 ` [PATCH 06/14] locking: add lockevent_read() prototype Arnd Bergmann
2023-05-17 13:10 ` [PATCH 07/14] panic: hide unused global functions Arnd Bergmann
2023-05-17 13:10 ` [PATCH 08/14] panic: make function declarations visible Arnd Bergmann
2023-05-17 13:10 ` [PATCH 09/14] kunit: include debugfs header file Arnd Bergmann
2023-05-18 3:54 ` David Gow
2023-05-17 13:10 ` [PATCH 10/14] suspend: add a arch_resume_nosmt() prototype Arnd Bergmann
2023-05-17 13:48 ` Rafael J. Wysocki
2023-05-17 14:52 ` Arnd Bergmann
2023-05-24 17:33 ` Rafael J. Wysocki
2023-05-17 13:10 ` [PATCH 11/14] init: consolidate prototypes in linux/init.h Arnd Bergmann
2023-06-22 15:02 ` Palmer Dabbelt
2023-05-17 13:11 ` [PATCH 12/14] init: move cifs_root_data() prototype into linux/mount.h Arnd Bergmann
2023-05-17 13:11 ` [PATCH 13/14] thread_info: move function declarations to linux/thread_info.h Arnd Bergmann
2023-05-24 18:48 ` Catalin Marinas
2023-05-17 13:11 ` [PATCH 14/14] time_namespace: always provide arch_get_vdso_data() prototype for vdso Arnd Bergmann
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