diff mbox

[6/7] vxge: independent interrupt moderation

Message ID 1292025782-16372-6-git-send-email-jon.mason@exar.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Jon Mason Dec. 11, 2010, 12:03 a.m. UTC 
Configure the workload clock register and TIM register for independent
interrupt moderation based on the individual vpath utilization instead
of common link utilization.  This greatly improves latency.

Signed-off-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: Ram Vepa <ram.vepa@exar.com>
---
 drivers/net/vxge/vxge-config.c |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

Comments

David Miller Dec. 11, 2010, 12:09 a.m. UTC | #1 
From: Jon Mason <jon.mason@exar.com>
Date: Fri, 10 Dec 2010 18:03:01 -0600

> Configure the workload clock register and TIM register for independent
> interrupt moderation based on the individual vpath utilization instead
> of common link utilization.  This greatly improves latency.
> 
> Signed-off-by: Jon Mason <jon.mason@exar.com>
> Signed-off-by: Ram Vepa <ram.vepa@exar.com>

Applied.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
diff mbox

Patch

diff --git a/drivers/net/vxge/vxge-config.c b/drivers/net/vxge/vxge-config.c
index 1169aa3..01c05f5 100644
--- a/drivers/net/vxge/vxge-config.c
+++ b/drivers/net/vxge/vxge-config.c
@@ -4422,8 +4422,7 @@  __vxge_hw_vpath_tim_configure(struct __vxge_hw_device *hldev, u32 vp_id)
 
 		if (config->tti.util_sel != VXGE_HW_USE_FLASH_DEFAULT) {
 			val64 &= ~VXGE_HW_TIM_CFG3_INT_NUM_UTIL_SEL(0x3f);
-			val64 |= VXGE_HW_TIM_CFG3_INT_NUM_UTIL_SEL(
-					config->tti.util_sel);
+			val64 |= VXGE_HW_TIM_CFG3_INT_NUM_UTIL_SEL(vp_id);
 		}
 
 		if (config->tti.ltimer_val != VXGE_HW_USE_FLASH_DEFAULT) {
@@ -4527,8 +4526,7 @@  __vxge_hw_vpath_tim_configure(struct __vxge_hw_device *hldev, u32 vp_id)
 
 		if (config->rti.util_sel != VXGE_HW_USE_FLASH_DEFAULT) {
 			val64 &= ~VXGE_HW_TIM_CFG3_INT_NUM_UTIL_SEL(0x3f);
-			val64 |= VXGE_HW_TIM_CFG3_INT_NUM_UTIL_SEL(
-					config->rti.util_sel);
+			val64 |= VXGE_HW_TIM_CFG3_INT_NUM_UTIL_SEL(vp_id);
 		}
 
 		if (config->rti.ltimer_val != VXGE_HW_USE_FLASH_DEFAULT) {
@@ -4549,6 +4547,11 @@  __vxge_hw_vpath_tim_configure(struct __vxge_hw_device *hldev, u32 vp_id)
 	writeq(val64, &vp_reg->tim_cfg2_int_num[VXGE_HW_VPATH_INTR_BMAP]);
 	writeq(val64, &vp_reg->tim_cfg3_int_num[VXGE_HW_VPATH_INTR_BMAP]);
 
+	val64 = VXGE_HW_TIM_WRKLD_CLC_WRKLD_EVAL_PRD(150);
+	val64 |= VXGE_HW_TIM_WRKLD_CLC_WRKLD_EVAL_DIV(0);
+	val64 |= VXGE_HW_TIM_WRKLD_CLC_CNT_RX_TX(3);
+	writeq(val64, &vp_reg->tim_wrkld_clc);
+
 	return status;
 }