linux-kernel - Re: [PATCH v2 04/23] mm/slab_common: cleanup kmalloc_track

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Message-ID: <a85a0358-fd42-a269-9bde-216a9b0520c5@suse.cz>
Date:   Tue, 26 Apr 2022 17:49:08 +0200
From:   Vlastimil Babka <vbabka@...e.cz>
To:     Hyeonggon Yoo <42.hyeyoo@...il.com>
Cc:     Marco Elver <elver@...gle.com>,
        Matthew WilCox <willy@...radead.org>,
        Christoph Lameter <cl@...ux.com>,
        Pekka Enberg <penberg@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Roman Gushchin <roman.gushchin@...ux.dev>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 04/23] mm/slab_common: cleanup kmalloc_track_caller()

On 4/14/22 10:57, Hyeonggon Yoo wrote:
> Make kmalloc_track_caller() wrapper of kmalloc_node_track_caller().
> 
> Signed-off-by: Hyeonggon Yoo <42.hyeyoo@...il.com>
> ---
>  include/linux/slab.h | 17 ++++++++---------
>  mm/slab.c            |  6 ------
>  mm/slob.c            |  6 ------
>  mm/slub.c            | 22 ----------------------
>  4 files changed, 8 insertions(+), 43 deletions(-)
> 
> diff --git a/include/linux/slab.h b/include/linux/slab.h
> index a3b9d4c20d7e..acdb4b7428f9 100644
> --- a/include/linux/slab.h
> +++ b/include/linux/slab.h
> @@ -639,6 +639,12 @@ static inline __alloc_size(1, 2) void *kcalloc(size_t n, size_t size, gfp_t flag
>  	return kmalloc_array(n, size, flags | __GFP_ZERO);
>  }
>  
> +extern void *__kmalloc_node_track_caller(size_t size, gfp_t flags, int node,
> +					 unsigned long caller) __alloc_size(1);

Update: in v3 remove the extern, it's not necessary and the kernel is slowly
getting rid of them.