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trace: Trace virtqueue operations

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This patch adds trace events for virtqueue operations including
adding/removing buffers, notifying the guest, and receiving a notify
from the guest.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
This commit is contained in:
Stefan Hajnoczi 2010-05-24 13:19:21 +01:00 • committed by Anthony Liguori
parent 6d519a5f95
commit 64979a4d61
2 changed files with 16 additions and 0 deletions
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8
trace-events
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@ -38,6 +38,14 @@ disable qemu_memalign(size_t alignment, size_t size, void *ptr) "alignment %zu s
disable qemu_valloc(size_t size, void *ptr) "size %zu ptr %p"
disable qemu_vfree(void *ptr) "ptr %p"
# hw/virtio.c
disable virtqueue_fill(void *vq, const void *elem, unsigned int len, unsigned int idx) "vq %p elem %p len %u idx %u"
disable virtqueue_flush(void *vq, unsigned int count) "vq %p count %u"
disable virtqueue_pop(void *vq, void *elem, unsigned int in_num, unsigned int out_num) "vq %p elem %p in_num %u out_num %u"
disable virtio_queue_notify(void *vdev, int n, void *vq) "vdev %p n %d vq %p"
disable virtio_irq(void *vq) "vq %p"
disable virtio_notify(void *vdev, void *vq) "vdev %p vq %p"
# block.c
disable multiwrite_cb(void *mcb, int ret) "mcb %p ret %d"
disable bdrv_aio_multiwrite(void *mcb, int num_callbacks, int num_reqs) "mcb %p num_callbacks %d num_reqs %d"