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[RFC,0/4] riscv: Add basic percpu operations

Message ID 20220808080600.3346843-1-guoren@kernel.org (mailing list archive)
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Series riscv: Add basic percpu operations | expand

Message

Guo Ren Aug. 8, 2022, 8:05 a.m. UTC 
From: Guo Ren <guoren@linux.alibaba.com>

The series try to add basic percpu operations for riscv. HAVE_CMPXCHG_LOCAL
would let people confuse with cmpxchg(64)_local, so make the name more
accurate (HAVE_CMPXCHG_PERCPU_BYTE). Last, remove RISC-V's
cmpxchg(64)_local definition because it's no use.

Guo Ren (4):
  vmstat: percpu: Rename HAVE_CMPXCHG_LOCAL to HAVE_CMPXCHG_PERCPU_BYTE
  arm64: percpu: Use generic PERCPU_RW_OPS
  riscv: percpu: Implement this_cpu operations
  riscv: cmpxchg: Remove unused cmpxchg(64)_local

 .../locking/cmpxchg-local/arch-support.txt    |   6 +-
 arch/Kconfig                                  |   2 +-
 arch/arm64/Kconfig                            |   2 +-
 arch/arm64/include/asm/percpu.h               |  33 ------
 arch/riscv/include/asm/cmpxchg.h              |   9 --
 arch/riscv/include/asm/percpu.h               | 104 ++++++++++++++++++
 arch/s390/Kconfig                             |   2 +-
 arch/x86/Kconfig                              |   2 +-
 mm/vmstat.c                                   |   4 +-
 9 files changed, 113 insertions(+), 51 deletions(-)
 create mode 100644 arch/riscv/include/asm/percpu.h