linux-kernel - Re: [PATCH] mm: kmemleak: mark kmemleak_init prototype as _

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Message-ID: <20151028160219.GC8899@e104818-lin.cambridge.arm.com>
Date:	Wed, 28 Oct 2015 16:02:19 +0000
From:	Catalin Marinas <catalin.marinas@....com>
To:	Nicolas Iooss <nicolas.iooss_linux@....org>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] mm: kmemleak: mark kmemleak_init prototype as __init

On Sun, Jul 05, 2015 at 02:47:01AM +0100, Nicolas Iooss wrote:
> kmemleak_init() definition in mm/kmemleak.c is marked __init but its
> prototype in include/linux/kmemleak.h is marked __ref since commit
> a6186d89c913 ("kmemleak: Mark the early log buffer as __initdata").
> 
> This causes a section mismatch which is reported as a warning when
> building with clang -Wsection, because kmemleak_init() is declared in
> section .ref.text but defined in .init.text.
> 
> Fix this by marking kmemleak_init() prototype __init.
> 
> Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@....org>
> ---
>  include/linux/kmemleak.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/linux/kmemleak.h b/include/linux/kmemleak.h
> index d0a1f99e24e3..4894c6888bc6 100644
> --- a/include/linux/kmemleak.h
> +++ b/include/linux/kmemleak.h
> @@ -25,7 +25,7 @@
>  
>  #ifdef CONFIG_DEBUG_KMEMLEAK
>  
> -extern void kmemleak_init(void) __ref;
> +extern void kmemleak_init(void) __init;
>  extern void kmemleak_alloc(const void *ptr, size_t size, int min_count,
>  			   gfp_t gfp) __ref;
>  extern void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,

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

I forgot about this patch. Andrew, could you please queue this patch for
4.4? Thanks.

-- 
Catalin

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