From 601216e12c65e131453941962f2a8f6e49a2a379 Mon Sep 17 00:00:00 2001 From: Bing Zhao <bzhao@marvell.com> Date: Mon, 5 Nov 2012 16:59:15 -0800 Subject: [PATCH] mwifiex: process RX packets in SDIO IRQ thread directly 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 <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> --- 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 1afcd404a101..9c802ede9c3b 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 0d67333daa20..4fbbd611f630 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); } /* -- 2.20.1