[PATCH] mempool: add cache guard to per-lcore debug statistics

[Morten Brørup]

The per-lcore debug statistics, if enabled, are frequently written by
their individual lcores, so add a cache guard to prevent CPU cache
thrashing.

Depends-on: series-29415 ("clarify purpose of empty cache lines")

Signed-off-by: Morten Brørup <mb at smartsharesystems.com>
---
 lib/mempool/rte_mempool.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/mempool/rte_mempool.h b/lib/mempool/rte_mempool.h
index a05b25d5b9..f70bf36080 100644
--- a/lib/mempool/rte_mempool.h
+++ b/lib/mempool/rte_mempool.h
@@ -78,6 +78,7 @@ struct rte_mempool_debug_stats {
 	uint64_t get_fail_objs;        /**< Objects that failed to be allocated. */
 	uint64_t get_success_blks;     /**< Successful allocation number of contiguous blocks. */
 	uint64_t get_fail_blks;        /**< Failed allocation number of contiguous blocks. */
+	RTE_CACHE_GUARD;
 } __rte_cache_aligned;
 #endif
 
-- 
2.17.1