Marek Vasut 02b0e1a36c usb: ehci-hcd: Keep async schedule running ... Profiling the EHCI driver shows a significant performance problem in ehci_submit_async(). Specifically, this function keeps enabling and disabling async schedule back and forth for every single transaction. However, enabling/disabling the async schedule does not take effect immediatelly, but instead may take up to 1 mS (8 uFrames) to complete. This impacts USB storage significantly, esp. since the recent reduction of maximum transfer size to support more USB storage devices. This in turn results in sharp increase in the number of ehci_submit_async() calls. Since one USB storage BBB transfer does three such calls and the maximum transfer size is 120 kiB, the overhead is 6 mS per 120 kiB, which is unacceptable. However, this overhead can be removed simply by keeping the async schedule running. Specifically, the first transfer starts the async schedule and then each and every subsequent transfer only adds a new QH into that schedule, waits until the QH is completed and does NOT disable the async schedule. The async schedule is stopped only by shutting down the controller, which must happen before moving out of U-Boot, otherwise the controller will corrupt memory. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Bin Meng <bmeng.cn@gmail.com> Cc: Simon Glass <sjg@chromium.org>		2019-10-31 12:13:40 +01:00
..
adc	adc: stm32: Fix warnings when compiling with W=1	2019-07-12 11:50:55 +02:00
ata	ata: ahci: Don't forget to clear upper address regs.	2019-10-11 10:10:19 -04:00
axi	drivers: cosmetic: Convert SPDX license tags to Linux Kernel style	2018-10-28 09:26:39 -04:00
bios_emulator	bios_emulator: remove stray break	2019-08-09 22:24:02 +08:00
block	dm: core: Add device_foreach_child()	2019-10-08 13:57:39 +08:00
board	board: gazerbeam: Fix SC detection	2019-05-21 08:03:38 +02:00
bootcount	env: Drop environment.h header file where not needed	2019-08-11 16:43:41 -04:00
cache	dm: cache: add v5l2 cache controller driver	2019-09-03 09:31:03 +08:00
clk	Merge tag 'u-boot-clk-23Oct2019' of https://gitlab.denx.de/u-boot/custodians/u-boot-clk	2019-10-30 13:13:46 -04:00
core	drivers: clk: Fix using assigned-clocks in the node of the clock it sets up	2019-10-22 16:14:05 +02:00
cpu	imx8: move i.MX8 cpu desc code to drivers/cpu/imx8_cpu.c	2019-10-08 16:35:59 +02:00
crypto	drivers: crypto: rsa_mod_exp: Add manual relocation for ops->mod_exp()	2019-10-24 13:37:02 +02:00
ddr	ddr: imx8m: Fix the ddr init hang on imx8mq	2019-10-08 16:36:37 +02:00
demo	SPDX: Convert all of our single license tags to Linux Kernel style	2018-05-07 09:34:12 -04:00
dfu	dfu: add callback for flush and initiated operation	2019-10-31 12:12:31 +01:00
dma	CONFIG_SPL_SYS_[DI]CACHE_OFF: add	2019-05-18 08:15:35 -04:00
fastboot	env: Move env_get() to env.h	2019-08-11 16:43:41 -04:00
firmware	firmware: zynqmp: Clean up zynqmp_power_probe	2019-10-24 13:37:01 +02:00
fpga	arm64: zynqmp: Convert invoke_smc() to xilinx_pm_request()	2019-10-24 13:37:01 +02:00
gpio	gpio: zynq: Add gpio driver support for PMC gpio	2019-10-24 13:37:01 +02:00
hwspinlock	hwspinlock: add stm32 hardware spinlock support	2018-12-06 23:26:33 -05:00
i2c	i2c: imx_lpi2c: add ipg clk	2019-10-14 09:31:41 +02:00
input	env: Move env_get() to env.h	2019-08-11 16:43:41 -04:00
led	led: bcm6858: allow to use this driver on ARCH_963158	2019-04-23 17:57:22 -04:00
mailbox	mailbox: zynqmp: ipi mailbox driver	2019-10-08 09:55:11 +02:00
memory	SPDX: Convert all of our single license tags to Linux Kernel style	2018-05-07 09:34:12 -04:00
misc	misc: microchip_flexcom: introduce microchip_flexcom driver	2019-10-24 13:01:57 +03:00
mmc	mmc: fsl_esdhc: drop i.MX DDR support code	2019-10-29 10:09:22 +08:00
mtd	Merge tag 'u-boot-clk-23Oct2019' of https://gitlab.denx.de/u-boot/custodians/u-boot-clk	2019-10-30 13:13:46 -04:00
net	net: mt7628-eth: add support to isolate LAN/WAN ports	2019-10-25 17:20:44 +02:00
nvme	nvme: add accessor to namespace id and eui64	2019-10-06 16:02:37 +02:00
pch	x86: Allow the PCH and LPC uclasses to work with of-platdata	2019-10-08 13:57:48 +08:00
pci	Merge https://gitlab.denx.de/u-boot/custodians/u-boot-x86	2019-10-12 10:52:48 -04:00
pci_endpoint	pci_ep: Fix Coverity warning	2019-08-07 15:31:04 -04:00
phy	- bmips: add BCRM NAND support for BCM6368, BCM6328, BCM6362 and BCM63268 SoCs	2019-10-25 20:07:24 -04:00
pinctrl	pinctrl: add support for MediaTek MT7628	2019-10-25 17:20:44 +02:00
power	power: domain: add Amlogic Everything-Else power domain driver	2019-10-18 14:33:21 +02:00
pwm	pwm: imx: add DM_PWM support	2019-07-19 20:14:50 +02:00
qe	env: Drop environment.h header file where not needed	2019-08-11 16:43:41 -04:00
ram	ram: k3-j721e: Add support for J721E DDR controller	2019-10-25 17:33:21 -04:00
remoteproc	remoteproc: k3_arm64: Enable DM_FLAG_DEFAULT_PD_CTRL_OFF	2019-10-15 08:40:03 -06:00
reset	reset: add reset controller driver for MediaTek MIPS platform	2019-10-25 17:20:44 +02:00
rtc	rtc: ds3231/ds3232: fix coding style	2019-09-19 12:18:53 -04:00
scsi	scsi: Add dma direction member to command structure	2019-10-23 20:47:12 -04:00
serial	serial: serial_mtk: add non-DM version for SPL	2019-10-25 17:20:43 +02:00
smem	drivers: smem: sandbox	2018-07-19 16:31:38 -04:00
soc	soc: ti: k3-navss-ringacc: fix k3_nav_ringacc_ring_reset_dma	2019-09-13 11:56:08 -04:00
sound	sound: tegra: Add a sound driver	2019-05-24 10:14:10 -07:00
spi	Merge https://gitlab.denx.de/u-boot/custodians/u-boot-sunxi	2019-10-30 09:04:52 -04:00
spmi	SPDX: Convert all of our single license tags to Linux Kernel style	2018-05-07 09:34:12 -04:00
sysreset	x86: Move acpi_s3.h to a common location	2019-10-08 13:57:46 +08:00
tee	env: Drop the ACTION typedef	2019-08-11 16:43:41 -04:00
thermal	thermal: add i.MX8 thermal driver	2019-07-19 15:17:05 +02:00
timer	dm: timer: Skip device that does not have a valid ofnode in pre_probe()	2019-07-24 12:54:08 -07:00
tpm	tpm2: Don't assume active low reset value	2019-10-15 08:40:02 -06:00
ufs	ufs: Add glue layer driver for TI J721E devices	2019-10-23 20:47:12 -04:00
usb	usb: ehci-hcd: Keep async schedule running	2019-10-31 12:13:40 +01:00
video	video: meson: add compatible for Amlogic G12A	2019-10-18 11:45:36 +02:00
virtio	virtio: Add a Sandbox transport driver	2018-11-14 09:16:28 -08:00
w1	w1: Add driver for i.MX bus master controller	2019-01-01 14:12:18 +01:00
w1-eeprom	w1-eeprom: Add support for Maxim DS2502 add only memory	2018-11-16 16:51:55 -05:00
watchdog	watchdog: move WATCHDOG_TIMEOUT_MSECS to Kconfig	2019-10-08 07:46:38 +02:00
Kconfig	ufs: Add Initial Support for UFS subsystem	2019-10-23 20:47:12 -04:00
Makefile	ufs: Add Initial Support for UFS subsystem	2019-10-23 20:47:12 -04:00