From: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> To: <qemu-devel@nongnu.org> Cc: <kvm@vger.kernel.org>, Anthony Liguori <aliguori@us.ibm.com>, Kevin Wolf <kwolf@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, Asias He <asias@redhat.com>, Khoa Huynh <khoa@us.ibm.com>, Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Subject: [RFC v9 16/27] virtio-blk: Kick data plane thread using event notifier set Date: Wed, 18 Jul 2012 16:07:43 +0100 [thread overview] Message-ID: <1342624074-24650-17-git-send-email-stefanha@linux.vnet.ibm.com> (raw) In-Reply-To: <1342624074-24650-1-git-send-email-stefanha@linux.vnet.ibm.com> --- hw/virtio-blk.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c index 1616be5..d75c187 100644 --- a/hw/virtio-blk.c +++ b/hw/virtio-blk.c @@ -339,8 +339,7 @@ static void virtio_blk_handle_output(VirtIODevice *vdev, VirtQueue *vq) virtio_blk_set_status(vdev, VIRTIO_CONFIG_S_DRIVER_OK); /* start the thread */ /* Now kick the thread */ - uint64_t dummy = 1; - ssize_t unused __attribute__((unused)) = write(event_notifier_get_fd(virtio_queue_get_host_notifier(s->vq)), &dummy, sizeof dummy); + event_notifier_set(virtio_queue_get_host_notifier(s->vq)); } /* coalesce internal state, copy to pci i/o region 0 -- 1.7.10.4
WARNING: multiple messages have this Message-ID (diff)
From: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> To: qemu-devel@nongnu.org Cc: Kevin Wolf <kwolf@redhat.com>, Anthony Liguori <aliguori@us.ibm.com>, Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>, kvm@vger.kernel.org, "Michael S. Tsirkin" <mst@redhat.com>, Khoa Huynh <khoa@us.ibm.com>, Paolo Bonzini <pbonzini@redhat.com>, Asias He <asias@redhat.com> Subject: [Qemu-devel] [RFC v9 16/27] virtio-blk: Kick data plane thread using event notifier set Date: Wed, 18 Jul 2012 16:07:43 +0100 [thread overview] Message-ID: <1342624074-24650-17-git-send-email-stefanha@linux.vnet.ibm.com> (raw) In-Reply-To: <1342624074-24650-1-git-send-email-stefanha@linux.vnet.ibm.com> --- hw/virtio-blk.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c index 1616be5..d75c187 100644 --- a/hw/virtio-blk.c +++ b/hw/virtio-blk.c @@ -339,8 +339,7 @@ static void virtio_blk_handle_output(VirtIODevice *vdev, VirtQueue *vq) virtio_blk_set_status(vdev, VIRTIO_CONFIG_S_DRIVER_OK); /* start the thread */ /* Now kick the thread */ - uint64_t dummy = 1; - ssize_t unused __attribute__((unused)) = write(event_notifier_get_fd(virtio_queue_get_host_notifier(s->vq)), &dummy, sizeof dummy); + event_notifier_set(virtio_queue_get_host_notifier(s->vq)); } /* coalesce internal state, copy to pci i/o region 0 -- 1.7.10.4
next prev parent reply other threads:[~2012-07-18 15:08 UTC|newest] Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-07-18 15:07 [RFC v9 00/27] virtio: virtio-blk data plane Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 01/27] virtio-blk: Remove virtqueue request handling code Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 02/27] virtio-blk: Set up host notifier for data plane Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 03/27] virtio-blk: Data plane thread event loop Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 04/27] virtio-blk: Map vring Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 05/27] virtio-blk: Do cheapest possible memory mapping Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 06/27] virtio-blk: Take PCI memory range into account Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 18:29 ` Michael S. Tsirkin 2012-07-18 18:29 ` [Qemu-devel] " Michael S. Tsirkin 2012-07-19 9:14 ` Stefan Hajnoczi 2012-07-19 9:14 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-19 9:16 ` Stefan Hajnoczi 2012-07-19 9:16 ` Stefan Hajnoczi 2012-07-19 9:29 ` Avi Kivity 2012-07-19 9:29 ` Avi Kivity 2012-07-18 15:07 ` [RFC v9 07/27] virtio-blk: Put dataplane code into its own directory Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 08/27] virtio-blk: Read requests from the vring Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 09/27] virtio-blk: Add Linux AIO queue Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 10/27] virtio-blk: Stop data plane thread cleanly Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 11/27] virtio-blk: Indirect vring and flush support Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 18:28 ` Michael S. Tsirkin 2012-07-18 18:28 ` [Qemu-devel] " Michael S. Tsirkin 2012-07-18 19:02 ` Michael S. Tsirkin 2012-07-18 19:02 ` [Qemu-devel] " Michael S. Tsirkin 2012-07-18 15:07 ` [RFC v9 12/27] virtio-blk: Add workaround for BUG_ON() dependency in virtio_ring.h Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 19:03 ` Michael S. Tsirkin 2012-07-18 19:03 ` [Qemu-devel] " Michael S. Tsirkin 2012-07-18 15:07 ` [RFC v9 13/27] virtio-blk: Increase max requests for indirect vring Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 14/27] virtio-blk: Use pthreads instead of qemu-thread Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 15/27] notifier: Add a function to set the notifier Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` Stefan Hajnoczi [this message] 2012-07-18 15:07 ` [Qemu-devel] [RFC v9 16/27] virtio-blk: Kick data plane thread using event notifier set Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 17/27] virtio-blk: Use guest notifier to raise interrupts Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 18/27] virtio-blk: Call ioctl() directly instead of irqfd Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:40 ` Michael S. Tsirkin 2012-07-18 15:40 ` [Qemu-devel] " Michael S. Tsirkin 2012-07-19 9:11 ` Stefan Hajnoczi 2012-07-19 9:11 ` Stefan Hajnoczi 2012-07-19 9:19 ` Michael S. Tsirkin 2012-07-19 9:19 ` Michael S. Tsirkin 2012-07-18 15:07 ` [RFC v9 19/27] virtio-blk: Disable guest->host notifies while processing vring Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 20/27] virtio-blk: Add ioscheduler to detect mergable requests Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 21/27] virtio-blk: Add basic request merging Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 22/27] virtio-blk: Fix " Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 19:04 ` Michael S. Tsirkin 2012-07-18 19:04 ` [Qemu-devel] " Michael S. Tsirkin 2012-07-18 15:07 ` [RFC v9 23/27] virtio-blk: Stub out SCSI commands Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 19:05 ` Michael S. Tsirkin 2012-07-18 19:05 ` [Qemu-devel] " Michael S. Tsirkin 2012-07-18 15:07 ` [RFC v9 24/27] virtio-blk: fix incorrect length Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 25/27] msix: fix irqchip breakage in msix_try_notify_from_thread() Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 26/27] msix: use upstream kvm_irqchip_set_irq() Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:07 ` [RFC v9 27/27] virtio-blk: add EVENT_IDX support to dataplane Stefan Hajnoczi 2012-07-18 15:07 ` [Qemu-devel] " Stefan Hajnoczi 2012-07-18 15:43 ` [RFC v9 00/27] virtio: virtio-blk data plane Michael S. Tsirkin 2012-07-18 15:43 ` [Qemu-devel] " Michael S. Tsirkin 2012-07-18 16:18 ` Khoa Huynh 2012-07-18 16:18 ` [Qemu-devel] " Khoa Huynh 2012-07-18 16:41 ` Khoa Huynh 2012-07-18 16:41 ` [Qemu-devel] " Khoa Huynh 2012-07-18 15:49 ` Michael S. Tsirkin 2012-07-18 15:49 ` [Qemu-devel] " Michael S. Tsirkin 2012-07-19 9:48 ` Stefan Hajnoczi 2012-07-19 9:48 ` Stefan Hajnoczi
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