Patchwork [net-next,05/10] tg3: Reorg tg3_napi members

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Submitter Matt Carlson
Date Nov. 24, 2010, 6:31 p.m.
Message ID <1290623514-18193-6-git-send-email-mcarlson@broadcom.com>
Download mbox | patch
Permalink /patch/72937/
State Accepted
Delegated to: David Miller
Headers show

Comments

Matt Carlson - Nov. 24, 2010, 6:31 p.m.
This patch reorders and realigns the tg3_napi members for a ~3-4%
performance improvement on small packet performance tests.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
---
 drivers/net/tg3.h |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)

Patch

diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index 4107036..2938d18 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -2715,17 +2715,17 @@  struct tg3_napi {
 	u32				last_irq_tag;
 	u32				int_mbox;
 	u32				coal_now;
-	u32				tx_prod;
-	u32				tx_cons;
-	u32				tx_pending;
-	u32				prodmbox;
 
-	u32				consmbox;
+	u32				consmbox ____cacheline_aligned;
 	u32				rx_rcb_ptr;
 	u16				*rx_rcb_prod_idx;
 	struct tg3_rx_prodring_set	prodring;
-
 	struct tg3_rx_buffer_desc	*rx_rcb;
+
+	u32				tx_prod	____cacheline_aligned;
+	u32				tx_cons;
+	u32				tx_pending;
+	u32				prodmbox;
 	struct tg3_tx_buffer_desc	*tx_ring;
 	struct ring_info		*tx_buffers;