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Re: [Qemu-devel] [PATCH v6 0/7] dataplane: switch to N:M devices-per-thr
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [PATCH v6 0/7] dataplane: switch to N:M devices-per-thread model |
Date: |
Tue, 11 Mar 2014 19:27:28 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Mon, Mar 03, 2014 at 11:30:01AM +0100, Stefan Hajnoczi wrote:
> v6:
> * Rename to object_get_canonical_path_component() [Andreas]
> * Add g_assert(obj) in object_get_canonical_path_component() [Andreas]
>
> v5:
> * Use Igor's get_pointer() malloc string patch [Igor]
> * Add object_get_canonical_basename() and use it for iothread_get_id() [Igor]
>
> v4:
> * Rename qdev property to virtio-blk-pci,x-iothread= since we will switch to
> QOM links once object_property_add_link() is fixed [bonzini]
>
> v3:
> * Fixed "Reliquinish" typo [fam]
> * Rebased onto qemu.git/master which now has Igor's -object improvements
>
> 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]
>
> 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,x-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.
>
> Igor Mammedov (1):
> qdev: make get_pointer() handle temporary strings
>
> Stefan Hajnoczi (6):
> object: add object_get_canonical_path_component()
> rfifolock: add recursive FIFO lock
> aio: add aio_context_acquire() and aio_context_release()
> iothread: add I/O thread object
> 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 | 70 ++++++++++++++++++++---
> include/block/aio.h | 18 ++++++
> include/hw/qdev-properties.h | 3 +
> include/hw/virtio/virtio-blk.h | 8 ++-
> include/qemu/rfifolock.h | 54 ++++++++++++++++++
> include/qom/object.h | 8 +++
> include/sysemu/iothread.h | 30 ++++++++++
> iothread.c | 119
> +++++++++++++++++++++++++++++++++++++++
> qom/object.c | 54 ++++++++++--------
> tests/Makefile | 2 +
> tests/test-aio.c | 58 +++++++++++++++++++
> tests/test-rfifolock.c | 90 +++++++++++++++++++++++++++++
> util/Makefile.objs | 1 +
> util/rfifolock.c | 78 +++++++++++++++++++++++++
> 17 files changed, 634 insertions(+), 74 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
Applied to my block tree:
https://github.com/stefanha/qemu/commits/block
Stefan
- [Qemu-devel] [PATCH v6 1/7] object: add object_get_canonical_path_component(), (continued)
- [Qemu-devel] [PATCH v6 1/7] object: add object_get_canonical_path_component(), Stefan Hajnoczi, 2014/03/03
- [Qemu-devel] [PATCH v6 2/7] rfifolock: add recursive FIFO lock, Stefan Hajnoczi, 2014/03/03
- [Qemu-devel] [PATCH v6 4/7] iothread: add I/O thread object, Stefan Hajnoczi, 2014/03/03
- [Qemu-devel] [PATCH v6 3/7] aio: add aio_context_acquire() and aio_context_release(), Stefan Hajnoczi, 2014/03/03
- [Qemu-devel] [PATCH v6 5/7] qdev: make get_pointer() handle temporary strings, Stefan Hajnoczi, 2014/03/03
- [Qemu-devel] [PATCH v6 6/7] iothread: add "iothread" qdev property type, Stefan Hajnoczi, 2014/03/03
- [Qemu-devel] [PATCH v6 7/7] dataplane: replace internal thread with IOThread, Stefan Hajnoczi, 2014/03/03
- Re: [Qemu-devel] [PATCH v6 0/7] dataplane: switch to N:M devices-per-thread model,
Stefan Hajnoczi <=