diff mbox

[11/17] sfc: Set PERIODIC_NOEVENT flag for MC_CMD_MAC_STATS

Message ID 1272482972.2549.27.camel@achroite.uk.solarflarecom.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Ben Hutchings April 28, 2010, 7:29 p.m. UTC 
From: Steve Hodgson <shodgson@solarflare.com>

When set, an event is not sent whenever periodic MAC statistics are
raised.  This avoids unnecessary wake-ups.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/sfc/mcdi_mac.c |   25 +++++++++----------------
 1 files changed, 9 insertions(+), 16 deletions(-)

Comments

David Miller April 28, 2010, 7:46 p.m. UTC | #1 
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Wed, 28 Apr 2010 20:29:32 +0100

> From: Steve Hodgson <shodgson@solarflare.com>
> 
> When set, an event is not sent whenever periodic MAC statistics are
> raised.  This avoids unnecessary wake-ups.
> 
> Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

Applied.
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diff mbox

Patch

diff --git a/drivers/net/sfc/mcdi_mac.c b/drivers/net/sfc/mcdi_mac.c
index 06d24a1..3918263 100644
--- a/drivers/net/sfc/mcdi_mac.c
+++ b/drivers/net/sfc/mcdi_mac.c
@@ -80,7 +80,7 @@  int efx_mcdi_mac_stats(struct efx_nic *efx, dma_addr_t dma_addr,
 	u8 inbuf[MC_CMD_MAC_STATS_IN_LEN];
 	int rc;
 	efx_dword_t *cmd_ptr;
-	int period = 1000;
+	int period = enable ? 1000 : 0;
 	u32 addr_hi;
 	u32 addr_lo;
 
@@ -92,21 +92,14 @@  int efx_mcdi_mac_stats(struct efx_nic *efx, dma_addr_t dma_addr,
 	MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_ADDR_LO, addr_lo);
 	MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_ADDR_HI, addr_hi);
 	cmd_ptr = (efx_dword_t *)MCDI_PTR(inbuf, MAC_STATS_IN_CMD);
-	if (enable)
-		EFX_POPULATE_DWORD_6(*cmd_ptr,
-				     MC_CMD_MAC_STATS_CMD_DMA, 1,
-				     MC_CMD_MAC_STATS_CMD_CLEAR, clear,
-				     MC_CMD_MAC_STATS_CMD_PERIODIC_CHANGE, 1,
-				     MC_CMD_MAC_STATS_CMD_PERIODIC_ENABLE, 1,
-				     MC_CMD_MAC_STATS_CMD_PERIODIC_CLEAR, 0,
-				     MC_CMD_MAC_STATS_CMD_PERIOD_MS, period);
-	else
-		EFX_POPULATE_DWORD_5(*cmd_ptr,
-				     MC_CMD_MAC_STATS_CMD_DMA, 0,
-				     MC_CMD_MAC_STATS_CMD_CLEAR, clear,
-				     MC_CMD_MAC_STATS_CMD_PERIODIC_CHANGE, 1,
-				     MC_CMD_MAC_STATS_CMD_PERIODIC_ENABLE, 0,
-				     MC_CMD_MAC_STATS_CMD_PERIODIC_CLEAR, 0);
+	EFX_POPULATE_DWORD_7(*cmd_ptr,
+			     MC_CMD_MAC_STATS_CMD_DMA, !!enable,
+			     MC_CMD_MAC_STATS_CMD_CLEAR, clear,
+			     MC_CMD_MAC_STATS_CMD_PERIODIC_CHANGE, 1,
+			     MC_CMD_MAC_STATS_CMD_PERIODIC_ENABLE, !!enable,
+			     MC_CMD_MAC_STATS_CMD_PERIODIC_CLEAR, 0,
+			     MC_CMD_MAC_STATS_CMD_PERIODIC_NOEVENT, 1,
+			     MC_CMD_MAC_STATS_CMD_PERIOD_MS, period);
 	MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len);
 
 	rc = efx_mcdi_rpc(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf),