linux/arch/arm
Franklin S Cooper Jr 78b02c36e4 ARM: dts: am437xx: Enable NAND dma prefetch by default
Currently the default method of prefetch polled shows the highest
possible read and write speed when minimal non NAND background
activity is being done. But it is also very CPU intensive to reach
these high speeds (CPU load of 99% via mtd performance tests). While
DMA prefetch only uses 50% of the CPU to achieve around 23% less in
top read and write performance.

However, as the non NAND CPU load increases the read and write
performance takes a large hit when using polled prefetch. Therefore,
prefetch dma mode ends up outperforming prefetch polled in general
"system level" test. So switch to using dma prefetch by default since
it is likely what most users would prefer.

Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Acked-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2017-08-14 11:34:24 -07:00
..
boot ARM: dts: am437xx: Enable NAND dma prefetch by default 2017-08-14 11:34:24 -07:00
common arm: implement ->dma_supported instead of ->set_dma_mask 2017-06-28 06:54:49 -07:00
configs This is the big bulk of pin control changes for the v4.13 series: 2017-07-06 11:38:59 -07:00
crypto crypto: arm/crc32 - enable module autoloading based on CPU feature bits 2017-06-01 12:55:42 +08:00
firmware
include Merge branch 'work.uaccess-unaligned' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-07-15 11:17:52 -07:00
kernel pci-v4.13-fixes-1 2017-07-14 12:36:20 -07:00
kvm Merge branch 'kvmarm-master/master' into HEAD 2017-06-15 09:35:15 +01:00
lib
mach-actions ARM: owl: smp: Drop bogus holding pen 2017-07-03 14:31:47 +02:00
mach-alpine
mach-artpec
mach-asm9260
mach-aspeed clocksource/drivers/fttmr010: Merge Moxa into FTTMR010 2017-06-12 10:45:10 +02:00
mach-at91 Fixes for 4.12: 2017-06-18 23:12:36 -07:00
mach-axxia
mach-bcm ARM: SoC platform updates 2017-07-04 14:34:51 -07:00
mach-berlin
mach-clps711x clocksource/drivers: Rename CLKSRC_OF to TIMER_OF 2017-06-14 12:01:03 +02:00
mach-cns3xxx ARM: remove duplicate 'const' annotations' 2017-05-19 10:12:55 +02:00
mach-davinci This is the bulk of GPIO changes for the v4.13 series: 2017-07-07 12:40:27 -07:00
mach-digicolor
mach-dove ARM/PCI: Convert PCI scan API to pci_scan_root_bus_bridge() 2017-06-28 15:13:55 -05:00
mach-ebsa110
mach-efm32
mach-ep93xx
mach-exynos
mach-footbridge
mach-gemini
mach-highbank
mach-hisi
mach-imx ARM: imx6ull: Make suspend/resume work like on 6ul 2017-06-07 11:38:40 +08:00
mach-integrator
mach-iop13xx ARM/PCI: Convert PCI scan API to pci_scan_root_bus_bridge() 2017-06-28 15:13:55 -05:00
mach-iop32x
mach-iop33x
mach-ixp4xx scripts/spelling.txt: add regsiter -> register spelling mistake 2017-05-08 17:15:13 -07:00
mach-keystone
mach-ks8695
mach-lpc18xx
mach-lpc32xx ARM/dmaengine: pl08x: pass reasonable memcpy settings 2017-05-24 09:44:32 +05:30
mach-mediatek clocksource/drivers: Rename clocksource_probe to timer_probe 2017-06-14 11:59:16 +02:00
mach-meson arm: meson: select the clock controller for Meson8 2017-06-09 11:15:36 -07:00
mach-mmp
mach-moxart clocksource/drivers/fttmr010: Merge Moxa into FTTMR010 2017-06-12 10:45:10 +02:00
mach-mv78xx0 ARM/PCI: Convert PCI scan API to pci_scan_root_bus_bridge() 2017-06-28 15:13:55 -05:00
mach-mvebu
mach-mxs ARM: mxs: add support for I2SE Duckbill 2 boards 2017-04-10 21:25:50 +08:00
mach-netx
mach-nomadik
mach-nspire
mach-omap1 ARM: OMAP1: Fix a typo in a comment line 2017-06-06 23:54:13 -07:00
mach-omap2 ARM: SoC platform updates 2017-07-04 14:34:51 -07:00
mach-orion5x ARM/PCI: Convert PCI scan API to pci_scan_root_bus_bridge() 2017-06-28 15:13:55 -05:00
mach-oxnas
mach-picoxcell
mach-prima2 ARM: prima2: remove redundant select CPU_V7 2017-06-18 19:13:47 -07:00
mach-pxa This is the bulk of GPIO changes for the v4.13 series: 2017-07-07 12:40:27 -07:00
mach-qcom
mach-realview
mach-rockchip ARM: SoC platform updates 2017-07-04 14:34:51 -07:00
mach-rpc arm: mach-rpc: ecard: fix build error 2017-06-14 11:54:29 +02:00
mach-s3c24xx clocksource/drivers: Rename CLKSRC_OF to TIMER_OF 2017-06-14 12:01:03 +02:00
mach-s3c64xx dmaengine updates for 4.13-rc1 2017-07-08 12:36:50 -07:00
mach-s5pv210
mach-sa1100 ARM: HP Jornada 7XX: move inline before return type 2017-07-12 16:26:04 -07:00
mach-shmobile ARM: SoC platform updates 2017-07-04 14:34:51 -07:00
mach-socfpga
mach-spear dmaengine updates for 4.13-rc1 2017-07-08 12:36:50 -07:00
mach-sti
mach-stm32 ARM: stm32: Introduce MACH_STM32F469 flag 2017-06-18 20:10:27 -07:00
mach-sunxi clocksource/drivers: Rename clocksource_probe to timer_probe 2017-06-14 11:59:16 +02:00
mach-tango
mach-tegra
mach-u300 clocksource/drivers: Rename clocksource_probe to timer_probe 2017-06-14 11:59:16 +02:00
mach-uniphier
mach-ux500
mach-versatile
mach-vexpress
mach-vt8500
mach-w90x900
mach-zx
mach-zynq clocksource/drivers: Rename clocksource_probe to timer_probe 2017-06-14 11:59:16 +02:00
mm Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 2017-07-08 12:17:25 -07:00
net arm: use set_memory.h header 2017-05-08 17:15:13 -07:00
nwfpe
oprofile
plat-iop
plat-omap
plat-orion
plat-pxa
plat-samsung
plat-versatile
probes arm: Prevent hotplug rwsem recursion 2017-05-26 10:10:46 +02:00
tools
vdso
vfp
xen This is the first pull request for the new dma-mapping subsystem 2017-07-06 19:20:54 -07:00
Kconfig Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 2017-07-08 12:17:25 -07:00
Kconfig-nommu
Kconfig.debug SoC for 4.13: 2017-06-18 22:53:20 -07:00
Makefile ARM: Prepare Actions Semi S500 2017-06-21 18:08:41 +02:00