[PATCH v2] mwifiex: process RX packets in SDIO IRQ thread directly
From: Bing Zhao <hidden>
Date: 2012-11-06 00:59:24
Subsystem:
networking drivers (wireless), the rest · Maintainers:
Johannes Berg, Linus Torvalds
ksdioirqd has higher priority than kworker. Process RX packets
in SDIO IRQ thread (ksdioirqd/mmcX) directly instead of deferring
the work to kworker to avoid the extra latency.
This improves TCP throughput 15~20% on an ARM platform with SDIO
2.0 controller.
Signed-off-by: Bing Zhao <redacted>
---
v2: modify the comment to accompany the change
(Mukesh Agrawal [off-list ref])
drivers/net/wireless/mwifiex/main.c | 1 +
drivers/net/wireless/mwifiex/sdio.c | 6 +++---
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/mwifiex/main.c b/drivers/net/wireless/mwifiex/main.c
index 1df767b..51a13f8 100644
--- a/drivers/net/wireless/mwifiex/main.c
+++ b/drivers/net/wireless/mwifiex/main.c@@ -282,6 +282,7 @@ exit_main_proc: mwifiex_shutdown_drv(adapter); return ret; } +EXPORT_SYMBOL_GPL(mwifiex_main_process); /* * This function frees the adapter structure.
diff --git a/drivers/net/wireless/mwifiex/sdio.c b/drivers/net/wireless/mwifiex/sdio.c
index fc8a9bf..011c816 100644
--- a/drivers/net/wireless/mwifiex/sdio.c
+++ b/drivers/net/wireless/mwifiex/sdio.c@@ -905,8 +905,8 @@ static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter) /* * SDIO interrupt handler. * - * This function reads the interrupt status from firmware and assigns - * the main process in workqueue which will handle the interrupt. + * This function reads the interrupt status from firmware and handles + * the interrupt in current thread (ksdioirqd) right away. */ static void mwifiex_sdio_interrupt(struct sdio_func *func)
@@ -929,7 +929,7 @@ mwifiex_sdio_interrupt(struct sdio_func *func) adapter->ps_state = PS_STATE_AWAKE; mwifiex_interrupt_status(adapter); - queue_work(adapter->workqueue, &adapter->main_work); + mwifiex_main_process(adapter); } /*
--
1.7.0.2