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Stefan Hajnoczi 2da61b671e rfifolock: add recursive FIFO lock 
QemuMutex does not guarantee fairness and cannot be acquired
recursively:

Fairness means each locker gets a turn and the scheduler cannot cause
starvation.

Recursive locking is useful for composition, it allows a sequence of
locking operations to be invoked atomically by acquiring the lock around
them.

This patch adds RFifoLock, a recursive lock that guarantees FIFO order.
Its first user is added in the next patch.

RFifoLock has one additional feature: it can be initialized with an
optional contention callback.  The callback is invoked whenever a thread
must wait for the lock.  For example, it can be used to poke the current
owner so that they release the lock soon.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-03-13 14:42:21 +01:00
audio
Add the ability to vary Spice playback and record rates, to facilitate Opus support.
2014-02-03 11:05:15 +01:00
backends
ui/sdl2 : initial port to SDL 2.0 (v2.0)
2014-03-05 09:52:05 +01:00
block
block: Rewrite the snapshot authorization mechanism for block filters.
2014-03-13 14:23:27 +01:00
bsd-user
*-user: Improve documentation for lock_user function
2013-09-20 20:09:24 +04:00
default-configs
Add Enhanced Three-Speed Ethernet Controller (eTSEC)
2014-03-05 03:06:45 +01:00
disas
libvixl: Fix format strings for several int64_t values
2014-03-10 14:56:29 +00:00
docs
Merge remote-tracking branch 'remotes/kraxel/tags/pull-misc-1' into staging
2014-03-12 15:03:42 +00:00
dtc @ bc895d6d09
…
fpu
softfloat: Support halving the result of muladd operation
2014-02-20 10:35:50 +00:00
fsdev
hw/9pfs: Include virtio-9p-device.o in build
2014-03-04 09:20:49 +05:30
gdb-xml
target-arm: Support fp registers in gdb stub
2013-12-17 19:42:32 +00:00
hw
Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
2014-03-11 19:52:32 +00:00
include
rfifolock: add recursive FIFO lock
2014-03-13 14:42:21 +01:00
libcacard
Add a 'name' parameter to qemu_thread_create
2014-03-09 21:09:38 +02:00
linux-headers
update linux headers to kvm/next
2014-02-27 09:50:45 +01:00
linux-user
Merge remote-tracking branch 'remotes/riku/linux-user-for-upstream' into staging
2014-03-10 16:22:39 +00:00
net
Merge remote-tracking branch 'remotes/stefanha/tags/net-pull-request' into staging
2014-03-12 16:45:25 +00:00
pc-bios
prep: Update ppc_rom.bin
2014-03-12 17:26:40 +01:00
pixman @ 97336fad32
…
po
po: Update all *.po files
2013-08-07 12:48:00 -05:00
qapi
qapi: Add missing null check to opts_start_struct()
2014-03-03 11:17:45 -05:00
qga
qga: Remove unneeded include file
2014-03-03 09:46:27 +04:00
qobject
qdict: Extract non-QDicts in qdict_array_split()
2014-02-21 22:11:23 +01:00
qom
object: add object_get_canonical_path_component()
2014-03-13 14:23:27 +01:00
roms
prep: Update ppc_rom.bin
2014-03-12 17:26:40 +01:00
scripts
qapi script: do not add "_" for every capitalized char in enum
2014-03-11 09:07:42 -04:00
slirp
misc: Spelling and grammar fixes in comments
2013-10-26 13:06:45 +04:00
stubs
stubs: Optimize dependencies for gdbstub.c
2014-03-02 17:13:31 +04:00
sysconfigs/target
…
target-alpha
exec: Make stl_*_phys input an AddressSpace
2014-02-11 22:57:18 +10:00
target-arm
target-arm: Implement WFE as a yield operation
2014-03-10 14:56:30 +00:00
target-cris
cris: Add interrupt signals to the CPU device
2014-02-03 14:03:59 +00:00
target-i386
Merge remote-tracking branch 'remotes/qmp-unstable/queue/qmp' into staging
2014-03-12 10:47:07 +00:00
target-lm32
target-lm32: stop VM on illegal or unknown instruction
2014-02-04 19:47:39 +01:00
target-m68k
Merge remote-tracking branch 'rth/tcg-pull' into staging
2013-10-11 09:36:52 -07:00
target-microblaze
Microblaze: Convert Microblaze-pic handling to GPIOs
2014-01-14 11:08:36 +10:00
target-mips
target-mips: add user-mode FR switch support for MIPS32r5
2014-02-10 16:46:38 +01:00
target-moxie
cpu: Drop cpu_model_str from CPU_COMMON
2013-10-07 11:48:47 +02:00
target-openrisc
target-openrisc: Use new qemu_ld/st opcodes
2014-02-12 08:47:57 +08:00
target-ppc
target-ppc: spapr: e500: fix to use cpu_dt_id
2014-03-05 03:07:04 +01:00
target-s390x
s390x/virtio-ccw: Adapter interrupt support.
2014-03-05 09:42:05 +01:00
target-sh4
target-sh4: Use new qemu_ld/st opcodes
2013-12-21 16:42:15 +01:00
target-sparc
target-sparc: Add and use CPU_FEATURE_CASA
2014-03-12 00:22:01 +00:00
target-unicore32
exec: Make ldl_*_phys input an AddressSpace
2014-02-11 22:56:54 +10:00
target-xtensa
target-xtensa: provide HW confg ID registers
2014-02-24 04:47:02 +04:00
tcg
tcg-aarch64: Remove nop from qemu_st slow path
2014-03-08 21:23:25 -08:00
tests
rfifolock: add recursive FIFO lock
2014-03-13 14:42:21 +01:00
trace
trace: Fix build warnings for Win32 build
2014-03-12 14:19:58 +01:00
ui
Merge remote-tracking branch 'remotes/spice/tags/pull-spice-4' into staging
2014-03-11 13:03:22 +00:00
util
rfifolock: add recursive FIFO lock
2014-03-13 14:42:21 +01:00
.exrc
…
.gitignore
Merge remote-tracking branch 'remotes/bonzini/configure' into staging
2014-02-24 15:38:00 +00:00
.gitmodules
Add OpenHack'Ware submodule
2014-03-12 17:26:32 +01:00
.mailmap
Update mailmap
2013-09-05 09:40:31 -05:00
.travis.yml
.travis.yml: Add aarch64-* targets
2014-01-08 19:07:20 +00:00
aio-posix.c
aio: make aio_poll(ctx, true) block with no fds
2013-12-06 16:53:51 +01:00
aio-win32.c
aio: make aio_poll(ctx, true) block with no fds
2013-12-06 16:53:51 +01:00
arch_init.c
XBZRLE: Fix qemu crash when resize the xbzrle cache
2014-03-08 22:22:34 +01:00
async.c
aio / timers: aio_ctx_prepare sets timeout from AioContext timers
2013-08-22 19:10:28 +02:00
balloon.c
…
block-migration.c
block: per caller dirty bitmap
2013-11-29 13:40:33 +01:00
block.c
block: Rewrite the snapshot authorization mechanism for block filters.
2014-03-13 14:23:27 +01:00
blockdev-nbd.c
nbd: use BlockDriverState refcnt
2013-09-06 15:25:08 +02:00
blockdev.c
blockdev: Fix NULL pointer dereference in blockdev-add
2014-03-06 17:27:28 +01:00
blockjob.c
Use error_is_set() only when necessary
2014-02-17 11:57:23 -05:00
bt-host.c
…
bt-vhci.c
…
Changelog
Use qemu-project.org domain name
2013-10-11 09:34:56 -07:00
CODING_STYLE
…
configure
Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
2014-03-11 19:52:32 +00:00
COPYING
…
COPYING.LIB
…
coroutine-gthread.c
…
coroutine-sigaltstack.c
…
coroutine-ucontext.c
…
coroutine-win32.c
…
cpu-exec.c
target-arm: Store AIF bits in env->pstate for AArch32
2014-02-26 17:20:06 +00:00
cpus.c
Add a 'name' parameter to qemu_thread_create
2014-03-09 21:09:38 +02:00
cputlb.c
cpu: Add per-cpu address space
2014-02-11 22:56:37 +10:00
device_tree.c
device_tree: qemu_fdt_setprop: Rename val_array arg
2013-12-20 01:58:12 +01:00
device-hotplug.c
…
disas.c
disas: Implement disassembly output for A64
2014-02-08 14:50:48 +00:00
dma-helpers.c
aio / timers: Untangle include files
2013-08-22 19:10:27 +02:00
dump.c
dump: add 'query-dump-guest-memory-capability' command
2014-02-28 11:52:03 -05:00
exec.c
Merge remote-tracking branch 'remotes/kvm/uq/master' into staging
2014-03-11 19:39:17 +00:00
gdbstub.c
vl: allow "cont" from panicked state
2013-11-04 15:39:41 +02:00
HACKING
…
hmp-commands.hx
block: update block commit documentation regarding image truncation
2014-01-24 16:12:49 +01:00
hmp.c
dump: make kdump-compressed format available for 'dump-guest-memory'
2014-02-28 11:52:03 -05:00
hmp.h
monitor: add object-add (QMP) and object_add (HMP) command
2014-01-06 13:45:47 -05:00
iohandler.c
…
ioport.c
portio: Allow to mark portio lists as coalesced MMIO flushing
2013-10-17 17:24:15 +02:00
kvm-all.c
Merge remote-tracking branch 'remotes/kvm/uq/master' into staging
2014-03-11 19:39:17 +00:00
kvm-stub.c
kvm: Add a new machine option kvm-type
2014-03-05 03:06:24 +01:00
LICENSE
LICENSE: clarify
2013-08-12 09:15:12 -05:00
main-loop.c
slirp: set mainloop timeout with more precise value
2013-09-17 12:26:05 +02:00
MAINTAINERS
Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
2014-03-10 19:14:11 +00:00
Makefile
build: Fix installation of target-dependent files
2014-03-08 12:08:11 +00:00
Makefile.objs
hw/9pfs: Include virtio-9p-device.o in build
2014-03-04 09:20:49 +05:30
Makefile.target
build: softmmu targets do not have a "main.o" file
2014-02-20 13:14:18 +01:00
memory_mapping.c
cpu: Use QTAILQ for CPU list
2013-09-03 12:25:55 +02:00
memory.c
memory_region_present: return false if address is not found in child MemoryRegion
2014-03-09 21:09:37 +02:00
migration-exec.c
aio / timers: Untangle include files
2013-08-22 19:10:27 +02:00
migration-fd.c
aio / timers: Untangle include files
2013-08-22 19:10:27 +02:00
migration-rdma.c
rdma: rename 'x-rdma' => 'rdma'
2014-02-25 14:30:28 +01:00
migration-tcp.c
aio / timers: Untangle include files
2013-08-22 19:10:27 +02:00
migration-unix.c
aio / timers: Untangle include files
2013-08-22 19:10:27 +02:00
migration.c
Add a 'name' parameter to qemu_thread_create
2014-03-09 21:09:38 +02:00
module-common.c
module: implement module loading
2014-02-20 13:14:18 +01:00
monitor.c
input: mouse: switch monitor to new core
2014-03-05 09:52:03 +01:00
nbd.c
nbd: move socket wrappers to qemu-nbd
2014-02-21 21:02:23 +01:00
os-posix.c
util: Split out exec_dir from os_find_datadir
2014-02-20 13:12:54 +01:00
os-win32.c
util: Split out exec_dir from os_find_datadir
2014-02-20 13:12:54 +01:00
page_cache.c
Fix two XBZRLE corruption issues
2014-02-25 14:30:28 +01:00
qapi-schema.json
qapi: convert BlockdevOptions to use enum discriminator
2014-03-11 09:07:42 -04:00
qdev-monitor.c
qdev-monitor: set DeviceState opts before calling realize
2014-02-26 10:32:40 -07:00
qdict-test-data.txt
…
qemu-bridge-helper.c
…
qemu-char.c
qmp: expose list of supported character device backends
2014-02-17 11:57:23 -05:00
qemu-coroutine-io.c
aio / timers: Untangle include files
2013-08-22 19:10:27 +02:00
qemu-coroutine-lock.c
coroutine: remove qemu_co_queue_wait_insert_head
2013-12-02 17:11:49 +01:00
qemu-coroutine-sleep.c
coroutine: add co_aio_sleep_ns() to allow sleep in block drivers
2013-10-30 12:22:09 +01:00
qemu-coroutine.c
coroutine: add ./configure --disable-coroutine-pool
2013-09-12 10:12:48 +02:00
qemu-doc.texi
Describe flaws in qcow/qcow2 encryption in the docs
2014-01-31 22:05:03 +01:00
qemu-file.c
qemu_file: Fix mismerge of "use fwrite() correctly"
2014-03-08 22:22:34 +01:00
qemu-img-cmds.hx
qemu-img: add -l for snapshot in convert
2013-12-04 15:19:00 +01:00
qemu-img.c
qemu-img convert: Fix progress output
2014-03-05 15:58:32 +01:00
qemu-img.texi
Describe flaws in qcow/qcow2 encryption in the docs
2014-01-31 22:05:03 +01:00
qemu-io-cmds.c
qemu-io: New command 'sleep'
2014-01-24 17:40:03 +01:00
qemu-io.c
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
2014-02-25 10:50:11 +00:00
qemu-log.c
…
qemu-nbd.c
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
2014-02-25 10:50:11 +00:00
qemu-nbd.texi
qemu-nbd: add doc for option -f
2013-12-04 15:19:00 +01:00
qemu-options-wrapper.h
…
qemu-options.h
…
qemu-options.hx
Add 'debug-threads' suboption to --name
2014-03-09 21:09:37 +02:00
qemu-seccomp.c
seccomp: add some basic shared memory syscalls to the whitelist
2014-01-20 11:19:34 -02:00
qemu-tech.texi
…
qemu-timer.c
timer: add timer_mod_anticipate and timer_mod_anticipate_ns
2013-10-17 17:31:00 +02:00
qemu.nsi
nsis: Improved support for parallel installation of 32 and 64 bit code
2013-11-07 07:02:44 +01:00
qemu.sasl
…
qmp-commands.hx
dump: add 'query-dump-guest-memory-capability' command
2014-02-28 11:52:03 -05:00
qmp.c
object: Report type in error when not user creatable.
2014-03-02 17:12:41 +04:00
qtest.c
kvm: Add a new machine option kvm-type
2014-03-05 03:06:24 +01:00
README
Use qemu-project.org domain name
2013-10-11 09:34:56 -07:00
rules.mak
module: implement module loading
2014-02-20 13:14:18 +01:00
savevm.c
migration: extend section_start/end traces
2014-03-08 22:22:34 +01:00
spice-qemu-char.c
spice: hook qemu_chr_fe_set_open() event to ports
2014-02-03 11:05:15 +01:00
tcg-runtime.c
…
tci.c
misc: Use new rotate functions
2013-09-25 21:23:05 +02:00
thread-pool.c
Add a 'name' parameter to qemu_thread_create
2014-03-09 21:09:38 +02:00
thunk.c
…
tpm.c
Use error_is_set() only when necessary
2014-02-17 11:57:23 -05:00
trace-events
migration: extend section_start/end traces
2014-03-08 22:22:34 +01:00
translate-all.c
exec: Make tb_invalidate_phys_addr input an AS
2014-02-11 22:55:55 +10:00
translate-all.h
split definitions for exec.c and translate-all.c radix trees
2013-12-10 12:29:56 +02:00
user-exec.c
…
VERSION
Open 2.0 development tree
2013-11-27 14:02:45 -08:00
version.rc
Use qemu-project.org domain name
2013-10-11 09:34:56 -07:00
vl.c
Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
2014-03-10 19:14:11 +00:00
vmstate.c
Fix vmstate_info_int32_le comparison/assign
2014-02-25 14:30:28 +01:00
xbzrle.c
…
xen-all.c
kvm: Add a new machine option kvm-type
2014-03-05 03:06:24 +01:00
xen-mapcache.c
…
xen-stub.c
kvm: Add a new machine option kvm-type
2014-03-05 03:06:24 +01:00

README 

Read the documentation in qemu-doc.html or on http://wiki.qemu-project.org

- QEMU team
Description
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