The series try to use riscv amo instructions to optimise some percpu operations and select HAVE_CMPXCHG_LOCAL to support cmpxchg-local feature. Wen Yao (2): riscv: percpu:Add riscv percpu operations riscv:kconfig:select HAVE_CMPXCHG_LOCAL arch/riscv/Kconfig | 1 + arch/riscv/include/asm/percpu.h | 101 ++++++++++++++++++++++++++++++++ 2 files changed, 102 insertions(+) create mode 100644 arch/riscv/include/asm/percpu.h -- 2.25.1