Hi all, This patch set tries to introduce a direct mapping mechanism of SRAM memory regions directly into user space. This is a draft of some reaserch work which I am going to continue. Since it is my last day in the office I have publish it as a RFC.
Benefits of having SRAM memory in the user space: - lower latency access - lower power usage - managable scratchpad which could be sharable between processes - could be used toughether with dedicated instructions like dot product calculation Regards, Lukasz Luba Lukasz Luba (2): DT: ARM: exynos: change SRAM device node dirvers & fs: add sram driver and sramfs arch/arm/boot/dts/exynos54xx.dtsi | 12 +- drivers/misc/Kconfig | 7 + drivers/misc/Makefile | 1 + drivers/misc/sram.h | 1 + drivers/misc/sram_direct.c | 863 ++++++++++++++++++++++++++++++ include/uapi/linux/magic.h | 1 + mm/memory.c | 5 +- 7 files changed, 878 insertions(+), 12 deletions(-) create mode 100644 drivers/misc/sram_direct.c -- 2.17.1
