Re: [PATCH v10 19/21] mm: Add vmalloc_huge_node()

[Andrew Morton]

On Wed, 12 Mar 2025 16:16:32 +0100 Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx> wrote:

> From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> 
> To enable node specific hash-tables.

"... using huge pages if possible"?

> --- a/mm/vmalloc.c
> +++ b/mm/vmalloc.c
> @@ -3966,6 +3966,13 @@ void *vmalloc_huge_noprof(unsigned long size, gfp_t gfp_mask)
>  }
>  EXPORT_SYMBOL_GPL(vmalloc_huge_noprof);
>  
> +void *vmalloc_huge_node_noprof(unsigned long size, gfp_t gfp_mask, int node)
> +{
> +	return __vmalloc_node_range_noprof(size, 1, VMALLOC_START, VMALLOC_END,
> +					   gfp_mask, PAGE_KERNEL, VM_ALLOW_HUGE_VMAP,
> +					   node, __builtin_return_address(0));
> +}
> +

kerneldoc please?


I suppose we can now simplify vmalloc_huge_noprof() to use this:

static inline void *vmalloc_huge_noprof(unsigned long size, gfp_t gfp_mask)
{
	return vmalloc_huge_node_noprof(size, gfp_mask, NUMA_NO_NODE);
}