From 6dd91e0eacff0a5c822ca37565d6b5740c4d2a80 Mon Sep 17 00:00:00 2001 From: Anup Patel Date: Wed, 15 May 2019 06:30:39 +0000 Subject: [PATCH] RISC-V: defconfig: Enable NO_HZ_IDLE and HIGH_RES_TIMERS This patch enables NO_HZ_IDLE (idle dynamic ticks) and HIGH_RES_TIMERS (hrtimers) in RV32 and RV64 defconfigs. Both of the above options are enabled by default for architectures such as x86, ARM, and ARM64. The idle dynamic ticks helps use save power by stopping timer ticks when the system is idle whereas hrtimers is a much improved timer subsystem compared to the old "timer wheel" based system. This patch is tested on SiFive Unleashed board and QEMU Virt machine. Signed-off-by: Anup Patel Reviewed-by: Palmer Dabbelt Signed-off-by: Paul Walmsley --- arch/riscv/configs/defconfig | 2 ++ arch/riscv/configs/rv32_defconfig | 2 ++ 2 files changed, 4 insertions(+) diff --git a/arch/riscv/configs/defconfig b/arch/riscv/configs/defconfig index 04944fb..87cb6d1 100644 --- a/arch/riscv/configs/defconfig +++ b/arch/riscv/configs/defconfig @@ -1,5 +1,7 @@ CONFIG_SYSVIPC=y CONFIG_POSIX_MQUEUE=y +CONFIG_NO_HZ_IDLE=y +CONFIG_HIGH_RES_TIMERS=y CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_CGROUPS=y diff --git a/arch/riscv/configs/rv32_defconfig b/arch/riscv/configs/rv32_defconfig index 1a911ed..d5449ef 100644 --- a/arch/riscv/configs/rv32_defconfig +++ b/arch/riscv/configs/rv32_defconfig @@ -1,5 +1,7 @@ CONFIG_SYSVIPC=y CONFIG_POSIX_MQUEUE=y +CONFIG_NO_HZ_IDLE=y +CONFIG_HIGH_RES_TIMERS=y CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_CGROUPS=y -- 2.7.4