On Wed, May 15, 2019 at 12:00 PM Anup Patel <anup.pa...@wdc.com> wrote: > > 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 <anup.pa...@wdc.com> > --- > 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 2fd3461e50ab..f254c352ec57 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 1a911ed8e772..d5449ef805a3 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 > -- > 2.17.1 >
Hi All, Any comments on this one? @Palmer, It would be nice to have this in Linux-5.2 Regards, Anup
