linux-kernel - Re: [PATCH net-next v9 4/9] slab: introduce kvmalloc_array_node() and kvcalloc

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Date: Fri, 5 Apr 2024 12:12:46 +0200
From: Przemek Kitszel <przemyslaw.kitszel@...el.com>
To: Alexander Lobakin <aleksander.lobakin@...el.com>, "David S. Miller"
	<davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
	<kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
CC: Alexander Duyck <alexanderduyck@...com>, Yunsheng Lin
	<linyunsheng@...wei.com>, Jesper Dangaard Brouer <hawk@...nel.org>, "Ilias
 Apalodimas" <ilias.apalodimas@...aro.org>, Christoph Lameter <cl@...ux.com>,
	Vlastimil Babka <vbabka@...e.cz>, Andrew Morton <akpm@...ux-foundation.org>,
	<nex.sw.ncis.osdt.itp.upstreaming@...el.com>, <netdev@...r.kernel.org>,
	<intel-wired-lan@...ts.osuosl.org>, <linux-mm@...ck.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next v9 4/9] slab: introduce kvmalloc_array_node() and
 kvcalloc_node()

On 4/4/24 17:43, Alexander Lobakin wrote:
> Add NUMA-aware counterparts for kvmalloc_array() and kvcalloc() to be
> able to flexibly allocate arrays for a particular node.
> Rewrite kvmalloc_array() to kvmalloc_array_node(NUMA_NO_NODE) call.
> 
> Signed-off-by: Alexander Lobakin <aleksander.lobakin@...el.com>
> ---
>   include/linux/slab.h | 17 +++++++++++++++--
>   1 file changed, 15 insertions(+), 2 deletions(-)
> 
> diff --git a/include/linux/slab.h b/include/linux/slab.h
> index e53cbfa18325..d1d1fa5e7983 100644
> --- a/include/linux/slab.h
> +++ b/include/linux/slab.h
> @@ -774,14 +774,27 @@ static inline __alloc_size(1) void *kvzalloc(size_t size, gfp_t flags)
>   	return kvmalloc(size, flags | __GFP_ZERO);
>   }
>   
> -static inline __alloc_size(1, 2) void *kvmalloc_array(size_t n, size_t size, gfp_t flags)
> +static inline __alloc_size(1, 2) void *
> +kvmalloc_array_node(size_t n, size_t size, gfp_t flags, int node)
>   {
>   	size_t bytes;
>   
>   	if (unlikely(check_mul_overflow(n, size, &bytes)))
>   		return NULL;
>   
> -	return kvmalloc(bytes, flags);
> +	return kvmalloc_node(bytes, flags, node);
> +}
> +
> +static inline __alloc_size(1, 2) void *
> +kvmalloc_array(size_t n, size_t size, gfp_t flags)
> +{
> +	return kvmalloc_array_node(n, size, flags, NUMA_NO_NODE);
> +}
> +
> +static inline __alloc_size(1, 2) void *
> +kvcalloc_node(size_t n, size_t size, gfp_t flags, int node)
> +{
> +	return kvmalloc_array_node(n, size, flags | __GFP_ZERO, node);
>   }
>   
>   static inline __alloc_size(1, 2) void *kvcalloc(size_t n, size_t size, gfp_t flags)

Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>