linux-kernel - Re: [PATCH v7 06/12] mm: slub: share slab_err and object

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Date:	Tue, 25 Nov 2014 16:26:28 +0400
From:	Dmitry Chernenkov <dmitryc@...gle.com>
To:	Andrey Ryabinin <a.ryabinin@...sung.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Joe Perches <joe@...ches.com>,
	Dmitry Vyukov <dvyukov@...gle.com>,
	Konstantin Serebryany <kcc@...gle.com>,
	Andrey Konovalov <adech.fo@...il.com>,
	Yuri Gribov <tetra2005@...il.com>,
	Konstantin Khlebnikov <koct9i@...il.com>,
	Sasha Levin <sasha.levin@...cle.com>,
	Christoph Lameter <cl@...ux.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Dave Hansen <dave.hansen@...el.com>,
	Andi Kleen <andi@...stfloor.org>,
	Vegard Nossum <vegard.nossum@...il.com>,
	"H. Peter Anvin" <hpa@...or.com>, Dave Jones <davej@...hat.com>,
	"x86@...nel.org" <x86@...nel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>
Subject: Re: [PATCH v7 06/12] mm: slub: share slab_err and object_err functions

LGTM

On Mon, Nov 24, 2014 at 9:02 PM, Andrey Ryabinin <a.ryabinin@...sung.com> wrote:
> Remove static and add function declarations to mm/slab.h so they
> could be used by kernel address sanitizer.
>
> Signed-off-by: Andrey Ryabinin <a.ryabinin@...sung.com>
> ---
>  include/linux/slub_def.h | 5 +++++
>  mm/slub.c                | 4 ++--
>  2 files changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
> index c75bc1d..144b5cb 100644
> --- a/include/linux/slub_def.h
> +++ b/include/linux/slub_def.h
> @@ -115,4 +115,9 @@ static inline void *virt_to_obj(struct kmem_cache *s, void *slab_page, void *x)
>         return x - ((x - slab_page) % s->size);
>  }
>
> +__printf(3, 4)
> +void slab_err(struct kmem_cache *s, struct page *page, const char *fmt, ...);
> +void object_err(struct kmem_cache *s, struct page *page,
> +               u8 *object, char *reason);
> +
>  #endif /* _LINUX_SLUB_DEF_H */
> diff --git a/mm/slub.c b/mm/slub.c
> index 95d2142..0c01584 100644
> --- a/mm/slub.c
> +++ b/mm/slub.c
> @@ -629,14 +629,14 @@ static void print_trailer(struct kmem_cache *s, struct page *page, u8 *p)
>         dump_stack();
>  }
>
> -static void object_err(struct kmem_cache *s, struct page *page,
> +void object_err(struct kmem_cache *s, struct page *page,
>                         u8 *object, char *reason)
>  {
>         slab_bug(s, "%s", reason);
>         print_trailer(s, page, object);
>  }
>
> -static void slab_err(struct kmem_cache *s, struct page *page,
> +void slab_err(struct kmem_cache *s, struct page *page,
>                         const char *fmt, ...)
>  {
>         va_list args;
> --
> 2.1.3
>
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