linux-kernel - [PATCH 00/18] locking/atomic: atomic64 type cleanup

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Message-Id: <20190522132250.26499-1-mark.rutland@arm.com>
Date:   Wed, 22 May 2019 14:22:32 +0100
From:   Mark Rutland <mark.rutland@....com>
To:     linux-kernel@...r.kernel.org, peterz@...radead.org,
        will.deacon@....com
Cc:     aou@...s.berkeley.edu, arnd@...db.de, bp@...en8.de,
        catalin.marinas@....com, davem@...emloft.net, fenghua.yu@...el.com,
        heiko.carstens@...ibm.com, herbert@...dor.apana.org.au,
        ink@...assic.park.msu.ru, jhogan@...nel.org, linux@...linux.org.uk,
        mark.rutland@....com, mattst88@...il.com, mingo@...nel.org,
        mpe@...erman.id.au, palmer@...ive.com, paul.burton@...s.com,
        paulus@...ba.org, ralf@...ux-mips.org, rth@...ddle.net,
        stable@...r.kernel.org, tglx@...utronix.de, tony.luck@...el.com,
        vgupta@...opsys.com
Subject: [PATCH 00/18] locking/atomic: atomic64 type cleanup

Currently architectures return inconsistent types for atomic64 ops. Some return
long (e..g. powerpc), some return long long (e.g. arc), and some return s64
(e.g. x86).

This is a bit messy, and causes unnecessary pain (e.g. as values must be cast
before they can be printed [1]).

This series reworks all the atomic64 implementations to use s64 as the base
type for atomic64_t (as discussed [2]), and to ensure that this type is
consistently used for parameters and return values in the API, avoiding further
problems in this area.

This series (based on v5.1-rc1) can also be found in my atomics/type-cleanup
branch [3] on kernel.org.

Thanks,
Mark.

[1] https://lkml.kernel.org/r/20190310183051.87303-1-cai@lca.pw
[2] https://lkml.kernel.org/r/20190313091844.GA24390@hirez.programming.kicks-ass.net
[3] git://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git atomics/type-cleanup

Mark Rutland (18):
  locking/atomic: crypto: nx: prepare for atomic64_read() conversion
  locking/atomic: s390/pci: prepare for atomic64_read() conversion
  locking/atomic: generic: use s64 for atomic64
  locking/atomic: alpha: use s64 for atomic64
  locking/atomic: arc: use s64 for atomic64
  locking/atomic: arm: use s64 for atomic64
  locking/atomic: arm64: use s64 for atomic64
  locking/atomic: ia64: use s64 for atomic64
  locking/atomic: mips: use s64 for atomic64
  locking/atomic: powerpc: use s64 for atomic64
  locking/atomic: riscv: fix atomic64_sub_if_positive() offset argument
  locking/atomic: riscv: use s64 for atomic64
  locking/atomic: s390: use s64 for atomic64
  locking/atomic: sparc: use s64 for atomic64
  locking/atomic: x86: use s64 for atomic64
  locking/atomic: use s64 for atomic64_t on 64-bit
  locking/atomic: crypto: nx: remove redundant casts
  locking/atomic: s390/pci: remove redundant casts

 arch/alpha/include/asm/atomic.h       | 20 +++++------
 arch/arc/include/asm/atomic.h         | 41 +++++++++++-----------
 arch/arm/include/asm/atomic.h         | 50 +++++++++++++-------------
 arch/arm64/include/asm/atomic_ll_sc.h | 20 +++++------
 arch/arm64/include/asm/atomic_lse.h   | 34 +++++++++---------
 arch/ia64/include/asm/atomic.h        | 20 +++++------
 arch/mips/include/asm/atomic.h        | 22 ++++++------
 arch/powerpc/include/asm/atomic.h     | 44 +++++++++++------------
 arch/riscv/include/asm/atomic.h       | 44 ++++++++++++-----------
 arch/s390/include/asm/atomic.h        | 38 ++++++++++----------
 arch/s390/pci/pci_debug.c             |  2 +-
 arch/sparc/include/asm/atomic_64.h    |  8 ++---
 arch/x86/include/asm/atomic64_32.h    | 66 +++++++++++++++++------------------
 arch/x86/include/asm/atomic64_64.h    | 38 ++++++++++----------
 drivers/crypto/nx/nx-842-pseries.c    |  6 ++--
 include/asm-generic/atomic64.h        | 20 +++++------
 include/linux/types.h                 |  2 +-
 lib/atomic64.c                        | 32 ++++++++---------
 18 files changed, 252 insertions(+), 255 deletions(-)

-- 
2.11.0