linux-kernel - [PATCH v3 0/5] arch,locking/atomic: add arch_cmpxchg[64]

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Message-Id: <20231121142347.241356-1-wuqiang.matt@bytedance.com>
Date:   Tue, 21 Nov 2023 22:23:42 +0800
From:   "wuqiang.matt" <wuqiang.matt@...edance.com>
To:     ubizjak@...il.com, mark.rutland@....com, vgupta@...nel.org,
        bcain@...cinc.com, jonas@...thpole.se,
        stefan.kristiansson@...nalahti.fi, shorne@...il.com,
        chris@...kel.net, jcmvbkbc@...il.com, geert@...ux-m68k.org,
        andi.shyti@...ux.intel.com, mingo@...nel.org, palmer@...osinc.com,
        andrzej.hajda@...el.com, arnd@...db.de, peterz@...radead.org,
        mhiramat@...nel.org
Cc:     linux-arch@...r.kernel.org, linux-snps-arc@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-hexagon@...r.kernel.org,
        linux-openrisc@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
        mattwu@....com, linux@...ck-us.net,
        "wuqiang.matt" <wuqiang.matt@...edance.com>
Subject: [PATCH v3 0/5] arch,locking/atomic: add arch_cmpxchg[64]_local

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(-)

-- 
2.40.1