On Wed, Oct 16, 2024 at 03:24:18PM +0300, Mike Rapoport wrote:
From: "Mike Rapoport (Microsoft)" <rppt@xxxxxxxxxx> vmalloc allocations with VM_ALLOW_HUGE_VMAP that do not explicitly specify node ID will use huge pages only if size_per_node is larger than a huge page. Still the actual allocated memory is not distributed between nodes and there is no advantage in such approach. On the contrary, BPF allocates SZ_2M * num_possible_nodes() for each new bpf_prog_pack, while it could do with a single huge page per pack. Don't account for number of nodes for VM_ALLOW_HUGE_VMAP with NUMA_NO_NODE and use huge pages whenever the requested allocation size is larger than a huge page. Signed-off-by: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx> Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Luis Chamberlain <mcgrof@xxxxxxxxxx> Luis
