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[Qemu-block] [PATCH for-2.9 00/10] aio_context_acquire/release pushdown,
From: |
Paolo Bonzini |
Subject: |
[Qemu-block] [PATCH for-2.9 00/10] aio_context_acquire/release pushdown, part 1 |
Date: |
Tue, 29 Nov 2016 12:46:57 +0100 |
This is the first step of pushing down the AioContext lock. Bottom halves
are already protected by their own lock, use it also for walking_bh
and for the handlers list (including walking_handlers). The (lock,
walking_foo) pair is wrapped into the QemuLockCnt primitive.
Paolo
Paolo Bonzini (10):
aio: rename bh_lock to list_lock
qemu-thread: introduce QemuLockCnt
aio: make ctx->list_lock a QemuLockCnt, subsuming ctx->walking_bh
qemu-thread: optimize QemuLockCnt with futexes on Linux
aio: tweak walking in dispatch phase
aio-posix: remove walking_handlers, protecting AioHandler list with list_lock
aio-win32: remove walking_handlers, protecting AioHandler list with list_lock
aio: document locking
aio: push aio_context_acquire/release down to dispatching
async: optimize aio_bh_poll
aio-posix.c | 81 ++++-----
aio-win32.c | 107 ++++++------
async.c | 47 +++---
docs/lockcnt.txt | 342 ++++++++++++++++++++++++++++++++++++++
docs/multiple-iothreads.txt | 5 +-
include/block/aio.h | 38 ++---
include/qemu/futex.h | 36 ++++
include/qemu/thread.h | 19 +++
util/Makefile.objs | 1 +
util/lockcnt.c | 395 ++++++++++++++++++++++++++++++++++++++++++++
util/qemu-thread-posix.c | 25 +--
util/trace-events | 10 ++
12 files changed, 955 insertions(+), 151 deletions(-)
create mode 100644 docs/lockcnt.txt
create mode 100644 include/qemu/futex.h
create mode 100644 util/lockcnt.c
--
2.9.3
- [Qemu-block] [PATCH for-2.9 00/10] aio_context_acquire/release pushdown, part 1,
Paolo Bonzini <=
- [Qemu-block] [PATCH 01/10] aio: rename bh_lock to list_lock, Paolo Bonzini, 2016/11/29
- [Qemu-block] [PATCH 03/10] aio: make ctx->list_lock a QemuLockCnt, subsuming ctx->walking_bh, Paolo Bonzini, 2016/11/29
- [Qemu-block] [PATCH 02/10] qemu-thread: introduce QemuLockCnt, Paolo Bonzini, 2016/11/29
- [Qemu-block] [PATCH 08/10] aio: document locking, Paolo Bonzini, 2016/11/29
- [Qemu-block] [PATCH 09/10] aio: push aio_context_acquire/release down to dispatching, Paolo Bonzini, 2016/11/29