[v3,0/5] arch,locking/atomic: add arch_cmpxchg[64]_local

Message

wuqiang.matt Nov. 21, 2023, 2:23 p.m. UTC

Archtectures arc, openrisc and hexagon haven't arch_cmpxchg_local()
defined, so the usecase of try_cmpxchg_local() in lib/objpool.c can
not pass kernel building by the kernel test robot.

Patch 1 improves the data size checking logic for arc; Patches 2/3/4
implement arch_cmpxchg[64]_local for arc/openrisc/hexagon. Patch 5
defines arch_cmpxchg_local as existing __cmpxchg_local rather the
generic variant.

wuqiang.matt (5):
  arch,locking/atomic: arc: arch_cmpxchg should check data size
  arch,locking/atomic: arc: add arch_cmpxchg[64]_local
  arch,locking/atomic: openrisc: add arch_cmpxchg[64]_local
  arch,locking/atomic: hexagon: add arch_cmpxchg[64]_local
  arch,locking/atomic: xtensa: define arch_cmpxchg_local as
    __cmpxchg_local

 arch/arc/include/asm/cmpxchg.h      | 40 ++++++++++++++++++----
 arch/hexagon/include/asm/cmpxchg.h  | 51 ++++++++++++++++++++++++++++-
 arch/openrisc/include/asm/cmpxchg.h |  6 ++++
 arch/xtensa/include/asm/cmpxchg.h   |  2 +-
 4 files changed, 91 insertions(+), 8 deletions(-)