From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>
Subject: [PATCH 00/17] powerpc: alternate queued spinlock implementation
Date: Thu, 28 Jul 2022 16:31:02 +1000 [thread overview]
Message-ID: <20220728063120.2867508-1-npiggin@gmail.com> (raw)
This replaces the generic queued spinlock code (like s390 does) with
our own implementation. There is an extra shim patch 1a here to get the
series to apply.
So far the microbenchmarks look okay, haven't really had time to write
up a good set of results. I hope to get some significant bigger
workloads some testing time in the next week or so so if those turn
out positive I may resubmit with any tweaks and some more details of
numbers.
Thanks,
Nick
Nicholas Piggin (17):
powerpc/qspinlock: powerpc qspinlock implementation
powerpc/qspinlock: add mcs queueing for contended waiters
powerpc/qspinlock: use a half-word store to unlock to avoid larx/stcx.
powerpc/qspinlock: convert atomic operations to assembly
powerpc/qspinlock: allow new waiters to steal the lock before queueing
powerpc/qspinlock: theft prevention to control latency
powerpc/qspinlock: store owner CPU in lock word
powerpc/qspinlock: paravirt yield to lock owner
powerpc/qspinlock: implement option to yield to previous node
powerpc/qspinlock: allow stealing when head of queue yields
powerpc/qspinlock: allow propagation of yield CPU down the queue
powerpc/qspinlock: add ability to prod new queue head CPU
powerpc/qspinlock: trylock and initial lock attempt may steal
powerpc/qspinlock: use spin_begin/end API
powerpc/qspinlock: reduce remote node steal spins
powerpc/qspinlock: allow indefinite spinning on a preempted owner
powerpc/qspinlock: provide accounting and options for sleepy locks
arch/powerpc/Kconfig | 1 -
arch/powerpc/include/asm/qspinlock.h | 130 ++-
arch/powerpc/include/asm/qspinlock_types.h | 70 ++
arch/powerpc/include/asm/spinlock_types.h | 2 +-
arch/powerpc/lib/Makefile | 4 +-
arch/powerpc/lib/qspinlock.c | 1009 ++++++++++++++++++++
6 files changed, 1172 insertions(+), 44 deletions(-)
create mode 100644 arch/powerpc/include/asm/qspinlock_types.h
create mode 100644 arch/powerpc/lib/qspinlock.c
--
2.35.1
next reply other threads:[~2022-07-28 6:32 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-28 6:31 Nicholas Piggin [this message]
2022-07-28 6:31 ` [PATCH 01/17] powerpc/qspinlock: powerpc qspinlock implementation Nicholas Piggin
2022-08-10 1:52 ` Jordan NIethe
2022-08-10 6:48 ` Christophe Leroy
2022-11-10 0:35 ` Jordan Niethe
2022-11-10 6:37 ` Christophe Leroy
2022-11-10 11:44 ` Nicholas Piggin
2022-11-10 9:09 ` Nicholas Piggin
2022-07-28 6:31 ` [PATCH 1a/17] powerpc/qspinlock: Prepare qspinlock code Nicholas Piggin
2022-07-28 6:31 ` [PATCH 02/17] powerpc/qspinlock: add mcs queueing for contended waiters Nicholas Piggin
2022-08-10 2:28 ` Jordan NIethe
2022-11-10 0:36 ` Jordan Niethe
2022-11-10 9:21 ` Nicholas Piggin
2022-07-28 6:31 ` [PATCH 03/17] powerpc/qspinlock: use a half-word store to unlock to avoid larx/stcx Nicholas Piggin
2022-08-10 3:28 ` Jordan Niethe
2022-11-10 0:39 ` Jordan Niethe
2022-11-10 9:25 ` Nicholas Piggin
2022-07-28 6:31 ` [PATCH 04/17] powerpc/qspinlock: convert atomic operations to assembly Nicholas Piggin
2022-08-10 3:54 ` Jordan Niethe
2022-11-10 0:39 ` Jordan Niethe
2022-11-10 8:36 ` Christophe Leroy
2022-11-10 11:48 ` Nicholas Piggin
2022-11-10 9:40 ` Nicholas Piggin
2022-07-28 6:31 ` [PATCH 05/17] powerpc/qspinlock: allow new waiters to steal the lock before queueing Nicholas Piggin
2022-08-10 4:31 ` Jordan Niethe
2022-11-10 0:40 ` Jordan Niethe
2022-11-10 10:54 ` Nicholas Piggin
2022-07-28 6:31 ` [PATCH 06/17] powerpc/qspinlock: theft prevention to control latency Nicholas Piggin
2022-08-10 5:51 ` Jordan Niethe
2022-11-10 0:40 ` Jordan Niethe
2022-11-10 10:57 ` Nicholas Piggin
2022-07-28 6:31 ` [PATCH 07/17] powerpc/qspinlock: store owner CPU in lock word Nicholas Piggin
2022-08-12 0:50 ` Jordan Niethe
2022-11-10 0:40 ` Jordan Niethe
2022-11-10 10:59 ` Nicholas Piggin
2022-07-28 6:31 ` [PATCH 08/17] powerpc/qspinlock: paravirt yield to lock owner Nicholas Piggin
2022-08-12 2:01 ` Jordan Niethe
2022-11-10 0:41 ` Jordan Niethe
2022-11-10 11:13 ` Nicholas Piggin
2022-07-28 6:31 ` [PATCH 09/17] powerpc/qspinlock: implement option to yield to previous node Nicholas Piggin
2022-08-12 2:07 ` Jordan Niethe
2022-11-10 0:41 ` Jordan Niethe
2022-11-10 11:14 ` Nicholas Piggin
2022-07-28 6:31 ` [PATCH 10/17] powerpc/qspinlock: allow stealing when head of queue yields Nicholas Piggin
2022-08-12 4:06 ` Jordan Niethe
2022-11-10 0:42 ` Jordan Niethe
2022-11-10 11:22 ` Nicholas Piggin
2022-07-28 6:31 ` [PATCH 11/17] powerpc/qspinlock: allow propagation of yield CPU down the queue Nicholas Piggin
2022-08-12 4:17 ` Jordan Niethe
2022-10-06 17:27 ` Laurent Dufour
2022-11-10 0:42 ` Jordan Niethe
2022-11-10 11:25 ` Nicholas Piggin
2022-07-28 6:31 ` [PATCH 12/17] powerpc/qspinlock: add ability to prod new queue head CPU Nicholas Piggin
2022-08-12 4:22 ` Jordan Niethe
2022-11-10 0:42 ` Jordan Niethe
2022-11-10 11:32 ` Nicholas Piggin
2022-07-28 6:31 ` [PATCH 13/17] powerpc/qspinlock: trylock and initial lock attempt may steal Nicholas Piggin
2022-08-12 4:32 ` Jordan Niethe
2022-11-10 0:43 ` Jordan Niethe
2022-11-10 11:35 ` Nicholas Piggin
2022-07-28 6:31 ` [PATCH 14/17] powerpc/qspinlock: use spin_begin/end API Nicholas Piggin
2022-08-12 4:36 ` Jordan Niethe
2022-11-10 0:43 ` Jordan Niethe
2022-11-10 11:36 ` Nicholas Piggin
2022-07-28 6:31 ` [PATCH 15/17] powerpc/qspinlock: reduce remote node steal spins Nicholas Piggin
2022-08-12 4:43 ` Jordan Niethe
2022-11-10 0:43 ` Jordan Niethe
2022-11-10 11:37 ` Nicholas Piggin
2022-07-28 6:31 ` [PATCH 16/17] powerpc/qspinlock: allow indefinite spinning on a preempted owner Nicholas Piggin
2022-08-12 4:49 ` Jordan Niethe
2022-09-22 15:02 ` Laurent Dufour
2022-09-23 8:16 ` Nicholas Piggin
2022-11-10 0:44 ` Jordan Niethe
2022-11-10 11:38 ` Nicholas Piggin
2022-07-28 6:31 ` [PATCH 17/17] powerpc/qspinlock: provide accounting and options for sleepy locks Nicholas Piggin
2022-08-15 1:11 ` Jordan Niethe
2022-11-10 0:44 ` Jordan Niethe
2022-11-10 11:41 ` Nicholas Piggin
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