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Date:   Wed, 24 May 2023 19:48:55 +0100
From:   Catalin Marinas <catalin.marinas@arm.com>
To:     Arnd Bergmann <arnd@kernel.org>
Cc:     Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org,
        Arnd Bergmann <arnd@arndb.de>,
        Russell King <linux@armlinux.org.uk>,
        Will Deacon <will@kernel.org>, Michal Simek <monstr@monstr.eu>,
        Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
        Helge Deller <deller@gmx.de>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Heiko Carstens <hca@linux.ibm.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, x86@kernel.org,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Paul Moore <paul@paul-moore.com>,
        Eric Paris <eparis@redhat.com>,
        Dennis Zhou <dennis@kernel.org>, Tejun Heo <tj@kernel.org>,
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Subject: Re: [PATCH 13/14] thread_info: move function declarations to
 linux/thread_info.h
Message-ID: <ZG5cF6pYCoaLEvFH@arm.com>
References: <20230517131102.934196-1-arnd@kernel.org>
 <20230517131102.934196-14-arnd@kernel.org>
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On Wed, May 17, 2023 at 03:11:01PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> There are a few __weak functions in kernel/fork.c, which architectures
> can override. If there is no prototype, the compiler warns about them:
> 
> kernel/fork.c:164:13: error: no previous prototype for 'arch_release_task_struct' [-Werror=missing-prototypes]
> kernel/fork.c:991:20: error: no previous prototype for 'arch_task_cache_init' [-Werror=missing-prototypes]
> kernel/fork.c:1086:12: error: no previous prototype for 'arch_dup_task_struct' [-Werror=missing-prototypes]
> 
> There are already prototypes in a number of architecture specific headers
> that have addressed those warnings before, but it's much better to have
> these in a single place so the warning no longer shows up anywhere.
> 
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

For arm64:

Acked-by: Catalin Marinas <catalin.marinas@arm.com>