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 v3 00/11] Introduce cmpxchg128() -- aka. the demise of cmpxchg_double()
Date: Mon, 15 May 2023 09:56:59 +0200 [thread overview]
Message-ID: <20230515075659.118447996@infradead.org> (raw)
Hi!
I seem to have forgotten to post this series last release; so here goes. I'm
really hoping to merge it and forget about it.
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 6.4.0-rc2.
Available here:
git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git core/wip-u128
Since v2:
- reworked this_cpu_cmpxchg() to not implicity do u128 but provide explicit
this_cpu_cmpxchg128() (arnd)
- added try_cmpxchg12_local() (per the addition of the try_cmpxchg*_local()
family of functions)
- slight cleanup of the SLUB conversion (due to rebase and having to touch it)
- added a 'cleanup' patch for SLUB, since I was staring at that anyway
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 | 30 +++--
arch/s390/include/asm/cmpxchg.h | 32 +----
arch/s390/include/asm/cpu_mf.h | 2 +-
arch/s390/include/asm/percpu.h | 34 +++--
arch/s390/kernel/perf_cpum_sf.c | 16 +--
arch/x86/include/asm/cmpxchg.h | 25 ----
arch/x86/include/asm/cmpxchg_32.h | 2 +-
arch/x86/include/asm/cmpxchg_64.h | 63 ++++++++-
arch/x86/include/asm/percpu.h | 100 +++++++++------
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 | 66 ++--------
include/crypto/b128ops.h | 14 +-
include/linux/atomic/atomic-arch-fallback.h | 95 +++++++++++++-
include/linux/atomic/atomic-instrumented.h | 93 ++++++++++++--
include/linux/dmar.h | 125 +++++++++---------
include/linux/percpu-defs.h | 38 ------
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 | 49 ++++++-
mm/slub.c | 191 ++++++++++++++--------------
scripts/atomic/gen-atomic-fallback.sh | 4 +-
scripts/atomic/gen-atomic-instrumented.sh | 19 +--
31 files changed, 667 insertions(+), 528 deletions(-)
next reply other threads:[~2023-05-15 8:07 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-15 7:56 Peter Zijlstra [this message]
2023-05-15 7:57 ` [PATCH v3 01/11] cyrpto/b128ops: Remove struct u128 Peter Zijlstra
2023-05-20 10:49 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2023-05-22 10:27 ` tip-bot2 for Peter Zijlstra
2023-05-15 7:57 ` [PATCH v3 02/11] types: Introduce [us]128 Peter Zijlstra
2023-05-20 10:49 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2023-05-22 10:27 ` tip-bot2 for Peter Zijlstra
2023-05-15 7:57 ` [PATCH v3 03/11] arch: Introduce arch_{,try_}_cmpxchg128{,_local}() Peter Zijlstra
2023-05-20 10:49 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2023-05-22 10:27 ` tip-bot2 for Peter Zijlstra
2023-05-15 7:57 ` [PATCH v3 04/11] instrumentation: Wire up cmpxchg128() Peter Zijlstra
2023-05-20 10:49 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2023-05-22 10:27 ` tip-bot2 for Peter Zijlstra
2023-05-15 7:57 ` [PATCH v3 05/11] percpu: Wire up cmpxchg128 Peter Zijlstra
2023-05-20 10:49 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2023-05-22 10:27 ` tip-bot2 for Peter Zijlstra
2023-05-25 12:49 ` [PATCH v3 05/11] " Peter Zijlstra
2023-05-25 22:59 ` Petr Tesařík
2023-05-15 7:57 ` [PATCH v3 06/11] x86,amd_iommu: Replace cmpxchg_double() Peter Zijlstra
2023-05-20 10:49 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2023-05-22 10:27 ` tip-bot2 for Peter Zijlstra
2023-05-15 7:57 ` [PATCH v3 07/11] x86,intel_iommu: " Peter Zijlstra
2023-05-20 10:49 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2023-05-22 10:27 ` tip-bot2 for Peter Zijlstra
2023-05-15 7:57 ` [PATCH v3 08/11] slub: " Peter Zijlstra
2023-05-20 10:49 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2023-05-22 10:27 ` tip-bot2 for Peter Zijlstra
2023-05-24 9:32 ` [PATCH v3 08/11] " Peter Zijlstra
2023-05-24 10:13 ` Vlastimil Babka
2023-05-25 10:29 ` Peter Zijlstra
2023-05-25 10:52 ` Arnd Bergmann
2023-05-25 13:10 ` Peter Zijlstra
2023-05-30 14:22 ` Peter Zijlstra
2023-05-30 19:32 ` Peter Zijlstra
2023-05-15 7:57 ` [PATCH v3 09/11] mm/slub: Fold slab_update_freelist() Peter Zijlstra
2023-05-24 11:58 ` Vlastimil Babka
2023-05-15 7:57 ` [PATCH v3 10/11] arch: Remove cmpxchg_double Peter Zijlstra
2023-05-15 8:52 ` Heiko Carstens
2023-05-20 10:49 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2023-05-22 10:27 ` tip-bot2 for Peter Zijlstra
2023-05-15 7:57 ` [PATCH v3 11/11] s390/cpum_sf: Convert to cmpxchg128() Peter Zijlstra
2023-05-20 10:49 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2023-05-22 10:27 ` tip-bot2 for Peter Zijlstra
2023-05-15 9:42 ` [PATCH v3 00/11] Introduce cmpxchg128() -- aka. the demise of cmpxchg_double() Arnd Bergmann
2023-05-24 9:39 ` Peter Zijlstra
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