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Date: Sat, 29 Jan 2022 15:38:54 -0800 From: Joe Damato <jdamato@...tly.com> To: netdev@...r.kernel.org, kuba@...nel.org, ilias.apalodimas@...aro.org, davem@...emloft.net, hawk@...nel.org Cc: Joe Damato <jdamato@...tly.com> Subject: [net-next v2 04/10] page_pool: Add stat tracking fast path allocations Add a counter to track successful fast-path allocations. Signed-off-by: Joe Damato <jdamato@...tly.com> --- include/net/page_pool.h | 3 +++ net/core/page_pool.c | 1 + 2 files changed, 4 insertions(+) diff --git a/include/net/page_pool.h b/include/net/page_pool.h index dae65f2..96949ad 100644 --- a/include/net/page_pool.h +++ b/include/net/page_pool.h @@ -142,6 +142,9 @@ struct page_pool { * stats for tracking page_pool events. */ struct page_pool_stats { + struct { + u64 fast; /* fast path allocations */ + } alloc; }; DECLARE_PER_CPU_ALIGNED(struct page_pool_stats, page_pool_stats); diff --git a/net/core/page_pool.c b/net/core/page_pool.c index b1a2599..6f692d9 100644 --- a/net/core/page_pool.c +++ b/net/core/page_pool.c @@ -180,6 +180,7 @@ static struct page *__page_pool_get_cached(struct page_pool *pool) if (likely(pool->alloc.count)) { /* Fast-path */ page = pool->alloc.cache[--pool->alloc.count]; + page_pool_stat_alloc_inc(fast); } else { page = page_pool_refill_alloc_cache(pool); } -- 2.7.4
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