From 4554341dd0ebd2590f8bf9229f5bec261b51c3f6 Mon Sep 17 00:00:00 2001
From: Shannon Nelson <shannon.nelson@amd.com>
Date: Wed, 6 Mar 2024 15:29:56 -0800
Subject: [PATCH] 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: Brett Creeley <brett.creeley@amd.com>
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/pensando/ionic/ionic_dev.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.h b/drivers/net/ethernet/pensando/ionic/ionic_dev.h
index 2a386e75571e3..f30eee4a5a80e 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_dev.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.h
@@ -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;
--
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