linux-kernel - Re: [PATCH 1/6] mm: Add vmalloc_huge

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Message-ID: <Zxtrt7f8rFwIknbB@pc636>
Date: Fri, 25 Oct 2024 11:58:15 +0200
From: Uladzislau Rezki <urezki@...il.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: tglx@...utronix.de, linux-kernel@...r.kernel.org, mingo@...hat.com,
	dvhart@...radead.org, dave@...olabs.net, andrealmeid@...lia.com,
	Andrew Morton <akpm@...ux-foundation.org>, urezki@...il.com,
	hch@...radead.org, lstoakes@...il.com,
	Arnd Bergmann <arnd@...db.de>, linux-api@...r.kernel.org,
	linux-mm@...ck.org, linux-arch@...r.kernel.org,
	malteskarupke@....de, cl@...ux.com, llong@...hat.com,
	Christoph Hellwig <hch@....de>
Subject: Re: [PATCH 1/6] mm: Add vmalloc_huge_node()

On Fri, Oct 25, 2024 at 11:03:48AM +0200, Peter Zijlstra wrote:
> To enable node specific hash-tables.
> 
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
> Reviewed-by: Christoph Hellwig <hch@....de>
> ---
>  include/linux/vmalloc.h |    3 +++
>  mm/vmalloc.c            |    7 +++++++
>  2 files changed, 10 insertions(+)
> 
> --- a/include/linux/vmalloc.h
> +++ b/include/linux/vmalloc.h
> @@ -177,6 +177,9 @@ void *__vmalloc_node_noprof(unsigned lon
>  void *vmalloc_huge_noprof(unsigned long size, gfp_t gfp_mask) __alloc_size(1);
>  #define vmalloc_huge(...)	alloc_hooks(vmalloc_huge_noprof(__VA_ARGS__))
>  
> +void *vmalloc_huge_node_noprof(unsigned long size, gfp_t gfp_mask, int node) __alloc_size(1);
> +#define vmalloc_huge_node(...)	alloc_hooks(vmalloc_huge_node_noprof(__VA_ARGS__))
> +
>  extern void *__vmalloc_array_noprof(size_t n, size_t size, gfp_t flags) __alloc_size(1, 2);
>  #define __vmalloc_array(...)	alloc_hooks(__vmalloc_array_noprof(__VA_ARGS__))
>  
> --- a/mm/vmalloc.c
> +++ b/mm/vmalloc.c
> @@ -3948,6 +3948,13 @@ void *vmalloc_huge_noprof(unsigned long
>  }
>  EXPORT_SYMBOL_GPL(vmalloc_huge_noprof);
>  
> +void *vmalloc_huge_node_noprof(unsigned long size, gfp_t gfp_mask, int node)
> +{
> +	return __vmalloc_node_range(size, 1, VMALLOC_START, VMALLOC_END,
> +				    gfp_mask, PAGE_KERNEL, VM_ALLOW_HUGE_VMAP,
> +				    node, __builtin_return_address(0));
> +}
> +
>  /**
>   * vzalloc - allocate virtually contiguous memory with zero fill
>   * @size:    allocation size
> 
> 
Reviewed-by: Uladzislau Rezki (Sony) <urezki@...il.com>

--
Uladzislau Rezki