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net: pin system percpu page_pools to the corresponding NUMA nodes

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System page_pools are percpu and one instance can be used only on
one CPU.
%NUMA_NO_NODE is fine for allocating pages, as the PP core always
allocates local pages in this case. But for the struct &page_pool
itself, this node ID means they are allocated on the boot CPU,
which may belong to a different node than the target CPU.
Pin system page_pools to the corresponding nodes when creating,
so that all the allocated data will always be local. Use
cpu_to_mem() to account memless nodes.
Nodes != 0 win some Kpps when testing with xdp-trafficgen.

Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Link: https://lore.kernel.org/r/20240325160635.3215855-1-aleksander.lobakin@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Alexander Lobakin
2024-03-25 17:06:35 +01:00
committed by Jakub Kicinski
parent 6e06312035
commit 341ee1a584
1 changed files with 1 additions and 1 deletions
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net/core/dev.c
+1 -1
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@@ -11762,7 +11762,7 @@ static int net_page_pool_create(int cpuid)
struct page_pool_params page_pool_params = {
.pool_size = SYSTEM_PERCPU_PAGE_POOL_SIZE,
.flags = PP_FLAG_SYSTEM_POOL,
.nid = NUMA_NO_NODE,
.nid = cpu_to_mem(cpuid),
};
struct page_pool *pp_ptr;