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| author | Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> | 2010-05-22 18:15:08 +0100 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2010-09-09 16:22:45 -0500 |
| commit | 6d519a5f95960176039baf0af8799fa289915534 (patch) | |
| tree | c3ede0800ba02c527e99b40382881803fa3305a8 /hw/virtio-blk.c | |
| parent | cd245a19329edfcd968b00d05ad92de7a0e2daa1 (diff) | |
| download | qemu-6d519a5f95960176039baf0af8799fa289915534.zip qemu-6d519a5f95960176039baf0af8799fa289915534.tar.gz qemu-6d519a5f95960176039baf0af8799fa289915534.tar.bz2 | |
trace: Trace virtio-blk, multiwrite, and paio_submit
This patch adds trace events that make it possible to observe
virtio-blk.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Diffstat (limited to 'hw/virtio-blk.c')
| -rw-r--r-- | hw/virtio-blk.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c index 395eb9a..bd6bbe6 100644 --- a/hw/virtio-blk.c +++ b/hw/virtio-blk.c @@ -13,6 +13,7 @@ #include <qemu-common.h> #include "qemu-error.h" +#include "trace.h" #include "blockdev.h" #include "virtio-blk.h" #ifdef __linux__ @@ -52,6 +53,8 @@ static void virtio_blk_req_complete(VirtIOBlockReq *req, int status) { VirtIOBlock *s = req->dev; + trace_virtio_blk_req_complete(req, status); + req->in->status = status; virtqueue_push(s->vq, &req->elem, req->qiov.size + sizeof(*req->in)); virtio_notify(&s->vdev, s->vq); @@ -88,6 +91,8 @@ static void virtio_blk_rw_complete(void *opaque, int ret) { VirtIOBlockReq *req = opaque; + trace_virtio_blk_rw_complete(req, ret); + if (ret) { int is_read = !(req->out->type & VIRTIO_BLK_T_OUT); if (virtio_blk_handle_rw_error(req, -ret, is_read)) @@ -270,6 +275,8 @@ static void virtio_blk_handle_write(VirtIOBlockReq *req, MultiReqBuffer *mrb) { BlockRequest *blkreq; + trace_virtio_blk_handle_write(req, req->out->sector, req->qiov.size / 512); + if (req->out->sector & req->dev->sector_mask) { virtio_blk_rw_complete(req, -EIO); return; |