diff options
| -rw-r--r-- | kernel/bpf/cpumap.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/kernel/bpf/cpumap.c b/kernel/bpf/cpumap.c index 732d6ced3987..cf727d77c6c6 100644 --- a/kernel/bpf/cpumap.c +++ b/kernel/bpf/cpumap.c @@ -280,6 +280,18 @@ static int cpu_map_kthread_run(void *data) * consume side valid as no-resize allowed of queue. */ n = ptr_ring_consume_batched(rcpu->queue, frames, CPUMAP_BATCH); + + for (i = 0; i < n; i++) { + void *f = frames[i]; + struct page *page = virt_to_page(f); + + /* Bring struct page memory area to curr CPU. Read by + * build_skb_around via page_is_pfmemalloc(), and when + * freed written by page_frag_free call. + */ + prefetchw(page); + } + m = kmem_cache_alloc_bulk(skbuff_head_cache, gfp, n, skbs); if (unlikely(m == 0)) { for (i = 0; i < n; i++) |