From: Ikjoon Jang Date: Wed, 6 Nov 2019 18:04:45 +0000 (+0200) Subject: ath10k: disable cpuidle during downloading firmware X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=3b58d6a599ba8c42cb4a3df8080f459ce7edcaa7;p=linux.git ath10k: disable cpuidle during downloading firmware Downloading ath10k firmware needs a large number of IOs and cpuidle's miss predictions make it worse. In the worst case, resume time can be three times longer than the average on sdio. This patch disables cpuidle during firmware downloading by applying PM_QOS_CPU_DMA_LATENCY in ath10k_download_fw(). Tested-on: QCA9880 Tested-on: QCA6174 hw3.2 SDIO WLAN.RMH.4.4.1-00029 Signed-off-by: Ikjoon Jang Signed-off-by: Kalle Valo --- diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c index 36c62d66c19e5..4f76ba5d78a98 100644 --- a/drivers/net/wireless/ath/ath10k/core.c +++ b/drivers/net/wireless/ath/ath10k/core.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include "core.h" @@ -1027,6 +1028,7 @@ static int ath10k_download_fw(struct ath10k *ar) u32 address, data_len; const void *data; int ret; + struct pm_qos_request latency_qos; address = ar->hw_params.patch_load_addr; @@ -1060,8 +1062,14 @@ static int ath10k_download_fw(struct ath10k *ar) ret); } - return ath10k_bmi_fast_download(ar, address, - data, data_len); + memset(&latency_qos, 0, sizeof(latency_qos)); + pm_qos_add_request(&latency_qos, PM_QOS_CPU_DMA_LATENCY, 0); + + ret = ath10k_bmi_fast_download(ar, address, data, data_len); + + pm_qos_remove_request(&latency_qos); + + return ret; } void ath10k_core_free_board_files(struct ath10k *ar)