From: Nicholas Piggin <npiggin@gmail.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Nicholas Piggin <npiggin@gmail.com>,
Ingo Molnar <mingo@redhat.com>, Will Deacon <will@kernel.org>,
Waiman Long <longman@redhat.com>,
Boqun Feng <boqun.feng@gmail.com>,
"linux-kernel @ vger . kernel . org"
<linux-kernel@vger.kernel.org>
Subject: [PATCH v2 00/12] locking/qspinlock: simplify code generation
Date: Wed, 13 Jul 2022 17:06:52 +1000 [thread overview]
Message-ID: <20220713070704.308394-1-npiggin@gmail.com> (raw)
This accounts for comments from last post. Thanks for the feedback.
Thanks,
Nick
v2:
- Remove BUILD_BUG_ON contradiction
- Add Longman's for pending bit for !paravirt case
- Make queued_spin_lock_mcs_queue __always_inline
- Drop cmpxchg_acquire->trylock patch that changed generated
code slightly (and had wild indenting).
- Fix dropped acquire memory ordering in pv_wait_node cleanup
(and renamed it to pv_wait_node_acquire).
Nicholas Piggin (12):
locking/qspinlock: remove pv_node abstraction
locking/qspinlock: inline mcs_spinlock functions into qspinlock
locking/qspinlock: split common mcs queueing code into its own
function
locking/qspinlock: move pv lock word helpers into qspinlock.c
locking/qspinlock: be less clever with the preprocessor
locking/qspinlock: merge qspinlock_paravirt.h into qspinlock.c
locking/qspinlock: remove arch qspinlock_paravirt.h includes
locking/qspinlock: stop renaming queued_spin_lock_slowpath to
native_queued_spin_lock_slowpath
locking/qspinlock: rename __pv_init_lock_hash to pv_spinlocks_init
locking/qspinlock: paravirt use simple trylock in case idx overflows
locking/qspinlock: separate pv_wait_node from the non-paravirt path
locking/qspinlock: simplify pv_wait_head_or_lock calling scheme
arch/alpha/include/asm/Kbuild | 1 -
arch/arc/include/asm/Kbuild | 1 -
arch/arm/include/asm/mcs_spinlock.h | 24 -
arch/arm64/include/asm/Kbuild | 1 -
arch/hexagon/include/asm/Kbuild | 1 -
arch/ia64/include/asm/Kbuild | 1 -
arch/m68k/include/asm/Kbuild | 1 -
arch/microblaze/include/asm/Kbuild | 1 -
arch/mips/include/asm/Kbuild | 1 -
arch/nios2/include/asm/Kbuild | 1 -
arch/parisc/include/asm/Kbuild | 1 -
arch/powerpc/include/asm/Kbuild | 1 -
arch/powerpc/include/asm/qspinlock.h | 45 +-
arch/powerpc/include/asm/qspinlock_paravirt.h | 7 -
arch/powerpc/include/asm/spinlock.h | 2 +-
arch/s390/include/asm/Kbuild | 1 -
arch/sh/include/asm/Kbuild | 1 -
arch/sparc/include/asm/Kbuild | 1 -
arch/um/include/asm/Kbuild | 1 -
arch/x86/hyperv/hv_spinlock.c | 2 +-
arch/x86/include/asm/Kbuild | 1 -
arch/x86/include/asm/qspinlock.h | 19 +-
arch/x86/include/asm/qspinlock_paravirt.h | 72 --
arch/x86/kernel/kvm.c | 2 +-
arch/x86/kernel/paravirt-spinlocks.c | 71 ++
arch/x86/kernel/paravirt.c | 2 +-
arch/x86/xen/spinlock.c | 2 +-
arch/xtensa/include/asm/Kbuild | 1 -
include/asm-generic/mcs_spinlock.h | 13 -
include/asm-generic/qspinlock.h | 6 +
kernel/locking/mcs_spinlock.h | 121 ---
kernel/locking/qspinlock.c | 835 ++++++++++++++----
kernel/locking/qspinlock_paravirt.h | 562 ------------
33 files changed, 764 insertions(+), 1038 deletions(-)
delete mode 100644 arch/arm/include/asm/mcs_spinlock.h
delete mode 100644 arch/powerpc/include/asm/qspinlock_paravirt.h
delete mode 100644 arch/x86/include/asm/qspinlock_paravirt.h
delete mode 100644 include/asm-generic/mcs_spinlock.h
delete mode 100644 kernel/locking/mcs_spinlock.h
delete mode 100644 kernel/locking/qspinlock_paravirt.h
--
2.35.1
next reply other threads:[~2022-07-13 7:07 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-13 7:06 Nicholas Piggin [this message]
2022-07-13 7:06 ` [PATCH v2 01/12] locking/qspinlock: remove pv_node abstraction Nicholas Piggin
2022-07-13 7:06 ` [PATCH v2 02/12] locking/qspinlock: inline mcs_spinlock functions into qspinlock Nicholas Piggin
2022-07-13 7:06 ` [PATCH v2 03/12] locking/qspinlock: split common mcs queueing code into its own function Nicholas Piggin
2022-07-13 7:06 ` [PATCH v2 04/12] locking/qspinlock: move pv lock word helpers into qspinlock.c Nicholas Piggin
2022-07-13 7:06 ` [PATCH v2 05/12] locking/qspinlock: be less clever with the preprocessor Nicholas Piggin
2022-07-13 7:06 ` [PATCH v2 06/12] locking/qspinlock: merge qspinlock_paravirt.h into qspinlock.c Nicholas Piggin
2022-07-14 14:16 ` kernel test robot
2022-07-29 3:49 ` Nicholas Piggin
2022-07-14 16:42 ` kernel test robot
2022-07-14 20:28 ` kernel test robot
2022-07-13 7:06 ` [PATCH v2 07/12] locking/qspinlock: remove arch qspinlock_paravirt.h includes Nicholas Piggin
2022-07-14 13:14 ` kernel test robot
2022-07-14 16:21 ` kernel test robot
2022-07-13 7:07 ` [PATCH v2 08/12] locking/qspinlock: stop renaming queued_spin_lock_slowpath to native_queued_spin_lock_slowpath Nicholas Piggin
2022-07-13 7:07 ` [PATCH v2 09/12] locking/qspinlock: rename __pv_init_lock_hash to pv_spinlocks_init Nicholas Piggin
2022-07-13 7:07 ` [PATCH v2 10/12] locking/qspinlock: paravirt use simple trylock in case idx overflows Nicholas Piggin
2022-07-13 7:07 ` [PATCH v2 11/12] locking/qspinlock: separate pv_wait_node from the non-paravirt path Nicholas Piggin
2022-07-13 7:07 ` [PATCH v2 12/12] locking/qspinlock: simplify pv_wait_head_or_lock calling scheme Nicholas Piggin
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