From: Peter Zijlstra <peterz@infradead.org>
To: torvalds@linux-foundation.org
Cc: corbet@lwn.net, will@kernel.org, peterz@infradead.org,
boqun.feng@gmail.com, mark.rutland@arm.com,
catalin.marinas@arm.com, dennis@kernel.org, tj@kernel.org,
cl@linux.com, hca@linux.ibm.com, gor@linux.ibm.com,
agordeev@linux.ibm.com, borntraeger@linux.ibm.com,
svens@linux.ibm.com, tglx@linutronix.de, mingo@redhat.com,
bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org,
hpa@zytor.com, joro@8bytes.org, suravee.suthikulpanit@amd.com,
robin.murphy@arm.com, dwmw2@infradead.org,
baolu.lu@linux.intel.com, Arnd Bergmann <arnd@arndb.de>,
Herbert Xu <herbert@gondor.apana.org.au>,
davem@davemloft.net, penberg@kernel.org, rientjes@google.com,
iamjoonsoo.kim@lge.com, Andrew Morton <akpm@linux-foundation.org>,
vbabka@suse.cz, roman.gushchin@linux.dev, 42.hyeyoo@gmail.com,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, linux-s390@vger.kernel.org,
iommu@lists.linux.dev, linux-arch@vger.kernel.org,
linux-crypto@vger.kernel.org
Subject: [PATCH v2 00/10] Introduce cmpxchg128() -- aka. the demise of cmpxchg_double()
Date: Thu, 02 Feb 2023 15:50:30 +0100 [thread overview]
Message-ID: <20230202145030.223740842@infradead.org> (raw)
Hi!
Since Linus hated on cmpxchg_double(), a few patches to get rid of it, as
proposed here:
https://lkml.kernel.org/r/Y2U3WdU61FvYlpUh@hirez.programming.kicks-ass.net
These patches are based on 6.2.0-rc6 + cryptodev-2.6, but also apply to next/master.
Available here:
git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git core/wip-u128
New since v1:
- rebaed on Eric's ghash cleanups (hence the cryptodev-2.6 dependency)
- rebased on Heiko's s390/cpum_sf CDSG patch
- fixed up a bunch of arch code
- fixed up the inline asm to use 'u128 *' mem argument so the compiler knows
how wide the modification is.
- reworked the percpu thing to use union based type-punning instead of
_Generic() based casts.
---
Documentation/core-api/this_cpu_ops.rst | 2 -
arch/arm64/include/asm/atomic_ll_sc.h | 56 ++++++-----
arch/arm64/include/asm/atomic_lse.h | 39 ++++----
arch/arm64/include/asm/cmpxchg.h | 48 +++-------
arch/arm64/include/asm/percpu.h | 31 ++++--
arch/s390/include/asm/cmpxchg.h | 32 ++-----
arch/s390/include/asm/cpu_mf.h | 2 +-
arch/s390/include/asm/percpu.h | 35 ++++---
arch/s390/kernel/perf_cpum_sf.c | 22 ++---
arch/x86/include/asm/cmpxchg.h | 25 -----
arch/x86/include/asm/cmpxchg_32.h | 2 +-
arch/x86/include/asm/cmpxchg_64.h | 54 ++++++++++-
arch/x86/include/asm/percpu.h | 97 +++++++++++--------
drivers/iommu/amd/amd_iommu_types.h | 9 +-
drivers/iommu/amd/iommu.c | 10 +-
drivers/iommu/intel/irq_remapping.c | 8 +-
include/asm-generic/percpu.h | 62 ++----------
include/crypto/b128ops.h | 14 +--
include/linux/atomic/atomic-arch-fallback.h | 95 ++++++++++++++++++-
include/linux/atomic/atomic-instrumented.h | 88 ++++++++++++++---
include/linux/dmar.h | 125 ++++++++++++------------
include/linux/percpu-defs.h | 46 +++------
include/linux/slub_def.h | 12 ++-
include/linux/types.h | 5 +
include/uapi/linux/types.h | 4 +
lib/crypto/curve25519-hacl64.c | 2 -
lib/crypto/poly1305-donna64.c | 2 -
mm/slab.h | 45 ++++++++-
mm/slub.c | 142 +++++++++++++++++-----------
scripts/atomic/gen-atomic-fallback.sh | 4 +-
scripts/atomic/gen-atomic-instrumented.sh | 21 ++--
31 files changed, 645 insertions(+), 494 deletions(-)
next reply other threads:[~2023-02-02 15:29 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-02 14:50 Peter Zijlstra [this message]
2023-02-02 14:50 ` [PATCH v2 01/10] cyrpto/b128ops: Remove struct u128 Peter Zijlstra
2023-02-02 20:21 ` H. Peter Anvin
2023-02-02 14:50 ` [PATCH v2 02/10] types: Introduce [us]128 Peter Zijlstra
2023-02-02 14:50 ` [PATCH v2 03/10] arch: Introduce arch_{,try_}_cmpxchg128{,_local}() Peter Zijlstra
2023-02-02 17:04 ` Heiko Carstens
2023-02-03 16:52 ` Mark Rutland
2023-02-02 14:50 ` [PATCH v2 04/10] instrumentation: Wire up cmpxchg128() Peter Zijlstra
2023-02-03 16:55 ` Mark Rutland
2023-02-02 14:50 ` [PATCH v2 05/10] percpu: Wire up cmpxchg128 Peter Zijlstra
2023-02-02 17:05 ` Heiko Carstens
2023-02-03 17:02 ` Mark Rutland
2023-02-03 17:25 ` Arnd Bergmann
2023-02-06 11:24 ` Peter Zijlstra
2023-02-06 12:14 ` Peter Zijlstra
2023-02-06 12:48 ` Peter Zijlstra
2023-02-06 13:20 ` Arnd Bergmann
2023-02-06 12:19 ` Arnd Bergmann
2023-02-02 14:50 ` [PATCH v2 06/10] x86,amd_iommu: Replace cmpxchg_double() Peter Zijlstra
2023-02-02 14:50 ` [PATCH v2 07/10] x86,intel_iommu: " Peter Zijlstra
2023-02-03 2:51 ` Baolu Lu
2023-02-02 14:50 ` [PATCH v2 08/10] slub: " Peter Zijlstra
2023-02-08 13:31 ` Hyeonggon Yoo
2023-02-02 14:50 ` [PATCH v2 09/10] arch: Remove cmpxchg_double Peter Zijlstra
2023-02-08 13:44 ` Hyeonggon Yoo
2023-02-02 14:50 ` [PATCH v2 10/10] s390/cpum_sf: Convert to cmpxchg128() Peter Zijlstra
2023-02-02 17:05 ` Heiko Carstens
2023-02-02 19:39 ` [PATCH v2 00/10] Introduce cmpxchg128() -- aka. the demise of cmpxchg_double() Linus Torvalds
2023-02-02 22:45 ` David Laight
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