v2:
* Based off Igor's "-object/object-add support custom location and 2nd stage
initialization" series
* Dropped dedicated -iothread option in favor of -object
* Avoid re-acquiring rfifo in iothread_run() [mdroth]
v3:
* Fixed "Reliquinish" typo [fam]
* Rebased onto qemu.git/master which now has Igor's -object improvements
This series moves the event loop thread out of dataplane code. It makes
-object iothread,id=foo a separate concept so several devices can be bound to
same iothread.
Syntax:
qemu -object iothread,id=iothread0 \
-device virtio-blk-pci,iothread=iothread0,x-data-plane=on,...
For backwards-compatibility the iothread= parameter can be omitted. A
per-device IOThread will be created behind the scenes (just like the old 1:1
threading model).
This series includes the aio_context_acquire/release API which makes it easy to
synchronize access to AioContext across threads.
After this series I will send separate patches for a "query-iothreads" command
that returns thread IDs similar to "query-cpus". This will allow binding
dataplane threads to host CPUs.
Stefan Hajnoczi (6):
rfifolock: add recursive FIFO lock
aio: add aio_context_acquire() and aio_context_release()
iothread: add I/O thread object
qdev: add get_pointer_and_free() for temporary strings
iothread: add "iothread" qdev property type
dataplane: replace internal thread with IOThread
Makefile.objs | 1 +
async.c | 18 ++++++
hw/block/dataplane/virtio-blk.c | 96 +++++++++++++++++-------------
hw/core/qdev-properties-system.c | 65 +++++++++++++++++++++
include/block/aio.h | 18 ++++++
include/hw/qdev-properties.h | 3 +
include/hw/virtio/virtio-blk.h | 8 ++-
include/qemu/rfifolock.h | 54 +++++++++++++++++
include/sysemu/iothread.h | 30 ++++++++++
iothread.c | 123 +++++++++++++++++++++++++++++++++++++++
tests/Makefile | 2 +
tests/test-aio.c | 58 ++++++++++++++++++
tests/test-rfifolock.c | 90 ++++++++++++++++++++++++++++
util/Makefile.objs | 1 +
util/rfifolock.c | 78 +++++++++++++++++++++++++
15 files changed, 601 insertions(+), 44 deletions(-)
create mode 100644 include/qemu/rfifolock.h
create mode 100644 include/sysemu/iothread.h
create mode 100644 iothread.c
create mode 100644 tests/test-rfifolock.c
create mode 100644 util/rfifolock.c
--
1.8.5.3
