Paolo Bonzini 51dee5e465 qemu-thread: introduce QemuLockCnt ... A QemuLockCnt comprises a counter and a mutex, with primitives to increment and decrement the counter, and to take and release the mutex. It can be used to do lock-free visits to a data structure whenever mutexes would be too heavy-weight and the critical section is too long for RCU. This could be implemented simply by protecting the counter with the mutex, but QemuLockCnt is harder to misuse and more efficient. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20170112180800.21085-3-pbonzini@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>		2017-01-16 13:25:17 +00:00
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specs	vhost-user: Add MTU protocol feature and op	2017-01-10 07:02:53 +02:00
aio_notify_accept.promela	AioContext: optimize clearing the EventNotifier	2015-07-22 12:41:40 +01:00
aio_notify_bug.promela	AioContext: fix broken placement of event_notifier_test_and_clear	2015-07-22 12:41:40 +01:00
aio_notify.promela	AioContext: fix broken ctx->dispatching optimization	2015-07-22 12:41:40 +01:00
atomics.txt	atomic: base mb_read/mb_set on load-acquire and store-release	2016-10-24 15:27:15 +02:00
bitmaps.md	docs: update bitmaps.md	2015-11-17 18:35:56 +08:00
blkdebug.txt	blkdebug: Merge hand-rolled and qapi BlkdebugEvent enum	2015-12-17 08:21:27 +01:00
blkverify.txt	blkverify: Add block driver for verifying I/O	2010-09-21 17:00:53 +02:00
block-replication.txt	docs: block replication's description	2016-09-13 11:00:56 +01:00
bootindex.txt	Typo, spelling and grammatical fixes	2013-04-12 14:33:20 +02:00
build-system.txt	docs: Add text for tests/docker in build-system.txt	2016-06-01 17:27:35 +08:00
ccid.txt	libcacard: improve documentation	2014-06-10 07:44:01 +02:00
COLO-FT.txt	docs: fix COLO architecture diagram	2016-11-15 15:36:21 +08:00
colo-proxy.txt	docs: Add documentation for COLO-proxy	2016-09-27 17:54:22 +08:00
generic-loader.txt	docs/generic-loader: Update the document	2016-10-17 19:22:16 +01:00
ich9-ehci-uhci.cfg	usb: update documentation	2011-07-08 11:25:56 +02:00
igd-assign.txt	vfio/pci: Add IGD documentation	2016-05-26 11:12:05 -06:00
image-fuzzer.txt	docs: List all image elements currently supported by the fuzzer	2014-09-22 11:39:35 +01:00
live-block-ops.txt	docs: Document how to stream to an intermediate layer	2016-10-31 16:52:38 +01:00
lockcnt.txt	qemu-thread: introduce QemuLockCnt	2017-01-16 13:25:17 +00:00
memory-hotplug.txt	docs: update documentation for memory hot unplug	2015-04-27 21:07:38 +02:00
memory.txt	memory: Provide memory_region_init_rom()	2016-07-04 13:06:35 +01:00
migration.txt	migration: convert post-copy to use QIOChannelBuffer	2016-05-26 11:31:34 +05:30
multi-thread-compression.txt	docs/multi-thread-compression: Fix wrong command string	2016-06-07 18:19:24 +03:00
multiple-iothreads.txt	iothread: release AioContext around aio_poll	2016-10-28 21:50:18 +08:00
multiseat.txt	maint: remove / fix many doubled words	2015-09-11 10:21:38 +03:00
pci_expander_bridge.txt	pxb: cleanup	2016-03-11 16:59:12 +02:00
pcie.txt	doc/pcie: correct command line examples	2017-01-10 07:02:52 +02:00
q35-chipset.cfg	q35: Add PCIe switch to example q35 configuration	2013-08-21 12:39:15 +03:00
qapi-code-gen.txt	qapi: rename QmpOutputVisitor to QObjectOutputVisitor	2016-10-25 16:25:54 +02:00
qcow2-cache.txt	docs: Specify that cache-clean-interval is only supported in Linux	2016-11-25 13:51:31 +01:00
qdev-device-use.txt	docs: Fix qdev-device-use.txt typo in -chardev serial, path=COM<NUM>	2011-09-09 09:43:17 +01:00
qemupciserial.inf	Docs: Introduce multiport serial support in qemupciserial.inf.	2014-03-12 10:33:23 +01:00
qmp-commands.txt	monitor: fix qmp/hmp query-memdev not reporting IDs of memory backends	2017-01-12 15:35:06 -02:00
qmp-events.txt	block: Add qdev ID to DEVICE_TRAY_MOVED	2016-10-07 13:34:22 +02:00
qmp-intro.txt	docs: Move files from docs/qmp/ to docs/	2015-10-12 18:44:53 +02:00
qmp-spec.txt	qapi: Update docs to match recent generator changes	2016-03-05 10:41:16 +01:00
rcu.txt	docs/rcu.txt: Fix minor typo	2016-11-02 09:28:57 +01:00
rdma.txt	rdma: Fix incorrect description in comments	2014-09-20 17:55:53 +04:00
replay.txt	record/replay: add network support	2017-01-06 10:38:00 +08:00
spice-port-fqdn.txt	docs: add spice-port-fqdn.txt	2012-12-17 14:01:41 +01:00
tcg-exclusive.promela	cpus-common: lock-free fast path for cpu_exec_start/end	2016-09-27 11:57:30 +02:00
throttle.txt	docs: Fix description of the leaky bucket algorithm in throttle.txt	2016-09-13 18:12:34 +03:00
tracing.txt	docs/tracing.txt: Update documentation of default backend	2016-11-08 18:16:48 +00:00
usb2.txt	usb: update docs for bus name change	2013-04-03 11:39:43 +02:00
usb-storage.txt	usb: add storage hotplug documentation	2016-07-12 10:25:30 +02:00
virtio-balloon-stats.txt	virtio-balloon: return empty data when no stats are available	2014-05-25 12:46:58 +03:00
virtio-migration.txt	virtio: Update migration docs	2016-07-21 20:44:20 +03:00
vnc-ledstate-Pseudo-encoding.txt	doc: document the Pseudo-encoding of LED state	2013-04-29 08:28:51 -05:00
win32-qemu-event.promela	qemu-thread: add a fast path to the Win32 QemuEvent	2015-09-24 20:52:28 +02:00
writing-qmp-commands.txt	docs: Belatedly update for move of QMP/* to docs/	2016-10-07 19:22:11 +02:00
xbzrle.txt	docs/xbzrle: correction	2016-10-13 17:23:53 +02:00
xen-save-devices-state.txt	docs: Belatedly update for move of qmp-commands.txt	2016-10-07 19:22:11 +02:00