linux-kernel - Re: [PATCH v3 1/7] mm, slab: combine kmalloc_caches and kmalloc_dma

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Message-ID: <01000164ebd7a137-093f1337-e0b0-4ea9-81dd-2e37b6adadb9-000000@email.amazonses.com>
Date:   Mon, 30 Jul 2018 15:38:54 +0000
From:   Christopher Lameter <cl@...ux.com>
To:     Vlastimil Babka <vbabka@...e.cz>
cc:     Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
        Roman Gushchin <guro@...com>, Michal Hocko <mhocko@...nel.org>,
        Johannes Weiner <hannes@...xchg.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Matthew Wilcox <willy@...radead.org>
Subject: Re: [PATCH v3 1/7] mm, slab: combine kmalloc_caches and
 kmalloc_dma_caches

On Wed, 18 Jul 2018, Vlastimil Babka wrote:

> --- a/include/linux/slab.h
> +++ b/include/linux/slab.h
> @@ -295,12 +295,28 @@ static inline void __check_heap_object(const void *ptr, unsigned long n,
>  #define SLAB_OBJ_MIN_SIZE      (KMALLOC_MIN_SIZE < 16 ? \
>                                 (KMALLOC_MIN_SIZE) : 16)
>
> +#define KMALLOC_NORMAL	0
> +#ifdef CONFIG_ZONE_DMA
> +#define KMALLOC_DMA	1
> +#define KMALLOC_TYPES	2
> +#else
> +#define KMALLOC_TYPES	1
> +#endif

An emum would be better here I think.

But the patch is ok

Acked-by: Christoph Lameter <cl@...ux.com>