netdev - [net-next v4 04/11] page_pool: Add macro for incrementing alloc stats

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Date:   Thu,  3 Feb 2022 16:09:26 -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,
        saeed@...nel.org, ttoukan.linux@...il.com, brouer@...hat.com
Cc:     Joe Damato <jdamato@...tly.com>
Subject: [net-next v4 04/11] page_pool: Add macro for incrementing alloc stats

Add macro incrementing per pool per cpu stats.

Signed-off-by: Joe Damato <jdamato@...tly.com>
---
 net/core/page_pool.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/net/core/page_pool.c b/net/core/page_pool.c
index 5f822b0..180e48b 100644
--- a/net/core/page_pool.c
+++ b/net/core/page_pool.c
@@ -26,6 +26,19 @@
 
 #define BIAS_MAX	LONG_MAX
 
+#ifdef CONFIG_PAGE_POOL_STATS
+/*
+ * this_cpu_inc_alloc_stat is intended to be used in softirq context
+ */
+#define this_cpu_inc_alloc_stat(pool, __stat)				\
+	do {								\
+		struct page_pool_stats __percpu *s = pool->stats;	\
+		__this_cpu_inc(s->alloc.__stat);			\
+	} while (0)
+#else
+#define this_cpu_inc_alloc_stat(pool, __stat)
+#endif
+
 static int page_pool_init(struct page_pool *pool,
 			  const struct page_pool_params *params)
 {
-- 
2.7.4