netdev - [PATCH net-next 3/5] ionic: struct reorder for faster access

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Date:   Mon, 31 Aug 2020 16:35:56 -0700
From:   Shannon Nelson <snelson@...sando.io>
To:     netdev@...r.kernel.org, davem@...emloft.net
Cc:     Shannon Nelson <snelson@...sando.io>
Subject: [PATCH net-next 3/5] ionic: struct reorder for faster access

Move a few active struct fields to the front of the struct
for a little better cache use and performance.

Signed-off-by: Shannon Nelson <snelson@...sando.io>
---
 .../net/ethernet/pensando/ionic/ionic_dev.h    | 18 +++++++++---------
 .../net/ethernet/pensando/ionic/ionic_lif.h    | 14 +++++++-------
 2 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.h b/drivers/net/ethernet/pensando/ionic/ionic_dev.h
index 2b2eb5f2a0e5..87debc512755 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_dev.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.h
@@ -199,16 +199,17 @@ struct ionic_desc_info {
 
 struct ionic_queue {
 	struct device *dev;
-	u64 dbell_count;
-	u64 drop;
-	u64 stop;
-	u64 wake;
 	struct ionic_lif *lif;
 	struct ionic_desc_info *info;
-	struct ionic_dev *idev;
 	u16 head_idx;
 	u16 tail_idx;
 	unsigned int index;
+	unsigned int num_descs;
+	u64 dbell_count;
+	u64 stop;
+	u64 wake;
+	u64 drop;
+	struct ionic_dev *idev;
 	unsigned int type;
 	unsigned int hw_index;
 	unsigned int hw_type;
@@ -226,7 +227,6 @@ struct ionic_queue {
 	};
 	dma_addr_t base_pa;
 	dma_addr_t sg_base_pa;
-	unsigned int num_descs;
 	unsigned int desc_size;
 	unsigned int sg_desc_size;
 	unsigned int pid;
@@ -246,8 +246,6 @@ struct ionic_intr_info {
 };
 
 struct ionic_cq {
-	void *base;
-	dma_addr_t base_pa;
 	struct ionic_lif *lif;
 	struct ionic_cq_info *info;
 	struct ionic_queue *bound_q;
@@ -255,8 +253,10 @@ struct ionic_cq {
 	u16 tail_idx;
 	bool done_color;
 	unsigned int num_descs;
-	u64 compl_count;
 	unsigned int desc_size;
+	u64 compl_count;
+	void *base;
+	dma_addr_t base_pa;
 };
 
 struct ionic;
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.h b/drivers/net/ethernet/pensando/ionic/ionic_lif.h
index e1e6ff1a0918..11ea9e0c6a4a 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.h
@@ -16,32 +16,32 @@
 #define IONIC_TX_BUDGET_DEFAULT		256
 
 struct ionic_tx_stats {
-	u64 dma_map_err;
 	u64 pkts;
 	u64 bytes;
-	u64 clean;
-	u64 linearize;
 	u64 csum_none;
 	u64 csum;
-	u64 crc32_csum;
 	u64 tso;
 	u64 tso_bytes;
 	u64 frags;
 	u64 vlan_inserted;
+	u64 clean;
+	u64 linearize;
+	u64 crc32_csum;
 	u64 sg_cntr[IONIC_MAX_NUM_SG_CNTR];
+	u64 dma_map_err;
 };
 
 struct ionic_rx_stats {
-	u64 dma_map_err;
-	u64 alloc_err;
 	u64 pkts;
 	u64 bytes;
 	u64 csum_none;
 	u64 csum_complete;
-	u64 csum_error;
 	u64 buffers_posted;
 	u64 dropped;
 	u64 vlan_stripped;
+	u64 csum_error;
+	u64 dma_map_err;
+	u64 alloc_err;
 };
 
 #define IONIC_QCQ_F_INITED		BIT(0)
-- 
2.17.1