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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

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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

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

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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

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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

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

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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

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Changelog

Use qemu-project.org domain name

2013-10-11 09:34:56 -07:00

CODING_STYLE

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configure

Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

2014-03-11 19:52:32 +00:00

COPYING

…

COPYING.LIB

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coroutine-gthread.c

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coroutine-sigaltstack.c

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coroutine-ucontext.c

…

coroutine-win32.c

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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

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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

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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

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qemu-bridge-helper.c

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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

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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

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qemu-options.h

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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

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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

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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

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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

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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