From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40366) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WKQ8q-00043a-Tq for qemu-devel@nongnu.org; Mon, 03 Mar 2014 05:30:42 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WKQ8k-0000Kt-Gx for qemu-devel@nongnu.org; Mon, 03 Mar 2014 05:30:36 -0500 Received: from mx1.redhat.com ([209.132.183.28]:30207) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WKQ8k-0000Ki-5N for qemu-devel@nongnu.org; Mon, 03 Mar 2014 05:30:30 -0500 From: Stefan Hajnoczi Date: Mon, 3 Mar 2014 11:30:01 +0100 Message-Id: <1393842608-17795-1-git-send-email-stefanha@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PATCH v6 0/7] dataplane: switch to N:M devices-per-thread model List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Kevin Wolf , Fam Zheng , "Shergill, Gurinder" , Michael Roth , Paolo Bonzini , "Vinod, Chegu" , Andreas Faerber 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 -- 1.8.5.3