[0/2] riscv: Rewrite percpu operations and support cmpxchg-local feature

Message

Wenyao Hai Oct. 26, 2022, 10:40 a.m. UTC

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