bpf: Align struct bpf_prog_stats

Do not risk spanning these small structures on two cache lines.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20191011181140.2898-1-edumazet@google.com

diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index 5b9d2233860654512da6ff5ec8bf56f2343ed722..282e28bf41ec627cad63c6b5bc3f439dc5f58f56 100644 (file)
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -363,7 +363,7 @@ struct bpf_prog_stats {
        u64 cnt;
        u64 nsecs;
        struct u64_stats_sync syncp;
-};
+} __aligned(2 * sizeof(u64));
 
 struct bpf_prog_aux {
        atomic_t refcnt;