Commit 4554341d authored by Shannon Nelson's avatar Shannon Nelson Committed by David S. Miller
Browse files

ionic: rearrange ionic_queue for better layout 



A simple change to the struct ionic_queue layout removes some
unnecessary padding and saves us a cacheline in the struct
ionic_qcq layout.

    struct ionic_queue {
	Before: /* size: 256, cachelines: 4, members: 29 */
	After:  /* size: 192, cachelines: 3, members: 29 */

    struct ionic_qcq {
	Before: /* size: 2112, cachelines: 33, members: 23 */
	After:  /* size: 2048, cachelines: 32, members: 23 */

Reviewed-by: default avatarBrett Creeley <brett.creeley@amd.com>
Signed-off-by: default avatarShannon Nelson <shannon.nelson@amd.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 453538c5

drivers/net/ethernet/pensando/ionic/ionic_dev.h

+2 −2
Original line number Diff line number Diff line
@@ -239,10 +239,10 @@ struct ionic_queue { 
	unsigned int num_descs;

	unsigned int max_sg_elems;

	u64 features;

	u64 drop;

	unsigned int type;

	unsigned int hw_index;

	unsigned int hw_type;

	bool xdp_flush;

	union {

		void *base;

		struct ionic_txq_desc *txq;
@@ -262,10 +262,10 @@ struct ionic_queue { 
	};

	struct xdp_rxq_info *xdp_rxq_info;

	struct ionic_queue *partner;

	bool xdp_flush;

	dma_addr_t base_pa;

	dma_addr_t cmb_base_pa;

	dma_addr_t sg_base_pa;

	u64 drop;

	unsigned int desc_size;

	unsigned int sg_desc_size;

	unsigned int pid;