[dpdk-dev] [PATCH v2 4/4] cache/slow-path: reduce cache align requirement for 128-byte cache targets

[Jerin Jacob <jerin.jacob@caviumnetworks.com>]

slow-path data structures need not be 128-byte cache aligned.
Reduce the alignment to 64-byte to save the memory.

No behavior change for 64-byte cache aligned systems as minimum
cache line size as 64.

Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
---
 lib/librte_ether/rte_ethdev.h    | 4 ++--
 lib/librte_mempool/rte_mempool.h | 2 +-
 lib/librte_ring/rte_ring.h       | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index bada8ad..4dbf73b 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -863,7 +863,7 @@ struct rte_eth_rxq_info {
 	struct rte_eth_rxconf conf; /**< queue config parameters. */
 	uint8_t scattered_rx;       /**< scattered packets RX supported. */
 	uint16_t nb_desc;           /**< configured number of RXDs. */
-} __rte_cache_aligned;
+} __rte_cache_min_aligned;
 
 /**
  * Ethernet device TX queue information structure.
@@ -872,7 +872,7 @@ struct rte_eth_rxq_info {
 struct rte_eth_txq_info {
 	struct rte_eth_txconf conf; /**< queue config parameters. */
 	uint16_t nb_desc;           /**< configured number of TXDs. */
-} __rte_cache_aligned;
+} __rte_cache_min_aligned;
 
 /** Maximum name length for extended statistics counters */
 #define RTE_ETH_XSTATS_NAME_SIZE 64
diff --git a/lib/librte_mempool/rte_mempool.h b/lib/librte_mempool/rte_mempool.h
index 6e2390a..8e5d10c 100644
--- a/lib/librte_mempool/rte_mempool.h
+++ b/lib/librte_mempool/rte_mempool.h
@@ -92,7 +92,7 @@ struct rte_mempool_debug_stats {
 	uint64_t get_success_objs; /**< Objects successfully allocated. */
 	uint64_t get_fail_bulk;    /**< Failed allocation number. */
 	uint64_t get_fail_objs;    /**< Objects that failed to be allocated. */
-} __rte_cache_aligned;
+} __rte_cache_min_aligned;
 #endif
 
 #if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
diff --git a/lib/librte_ring/rte_ring.h b/lib/librte_ring/rte_ring.h
index de036ce..33166aa 100644
--- a/lib/librte_ring/rte_ring.h
+++ b/lib/librte_ring/rte_ring.h
@@ -123,7 +123,7 @@ struct rte_ring_debug_stats {
 	uint64_t deq_success_objs; /**< Objects successfully dequeued. */
 	uint64_t deq_fail_bulk;    /**< Failed dequeues number. */
 	uint64_t deq_fail_objs;    /**< Objects that failed to be dequeued. */
-} __rte_cache_aligned;
+} __rte_cache_min_aligned;
 #endif
 
 #define RTE_RING_NAMESIZE 32 /**< The maximum length of a ring name. */
-- 
2.1.0