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vdpa: add trace events for vhost_vdpa_net_load_cmd

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For better debuggability and observability.

Message-Id: <1707910082-10243-9-git-send-email-si-wei.liu@oracle.com>
Reviewed-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Si-Wei Liu 2024-02-14 03:27:58 -08:00 committed by Michael S. Tsirkin
parent 19a060bce1
commit faed74468f
2 changed files with 4 additions and 0 deletions
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2
net/trace-events
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@ -26,3 +26,5 @@ colo_filter_rewriter_conn_offset(uint32_t offset) ": offset=%u"
# vhost-vdpa.c # vhost-vdpa.c
vhost_vdpa_set_address_space_id(void *v, unsigned vq_group, unsigned asid_num) "vhost_vdpa: %p vq_group: %u asid: %u" vhost_vdpa_set_address_space_id(void *v, unsigned vq_group, unsigned asid_num) "vhost_vdpa: %p vq_group: %u asid: %u"
vhost_vdpa_net_load_cmd(void *s, uint8_t class, uint8_t cmd, int data_num, int data_size) "vdpa state: %p class: %u cmd: %u sg_num: %d size: %d"
vhost_vdpa_net_load_cmd_retval(void *s, uint8_t class, uint8_t cmd, int r) "vdpa state: %p class: %u cmd: %u retval: %d"

2
net/vhost-vdpa.c
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@ -715,6 +715,7 @@ static ssize_t vhost_vdpa_net_load_cmd(VhostVDPAState *s,
assert(data_size < vhost_vdpa_net_cvq_cmd_page_len() - sizeof(ctrl)); assert(data_size < vhost_vdpa_net_cvq_cmd_page_len() - sizeof(ctrl));
cmd_size = sizeof(ctrl) + data_size; cmd_size = sizeof(ctrl) + data_size;
trace_vhost_vdpa_net_load_cmd(s, class, cmd, data_num, data_size);
if (vhost_svq_available_slots(svq) < 2 || if (vhost_svq_available_slots(svq) < 2 ||
iov_size(out_cursor, 1) < cmd_size) { iov_size(out_cursor, 1) < cmd_size) {
/* /*
@ -746,6 +747,7 @@ static ssize_t vhost_vdpa_net_load_cmd(VhostVDPAState *s,
r = vhost_vdpa_net_cvq_add(s, &out, 1, &in, 1); r = vhost_vdpa_net_cvq_add(s, &out, 1, &in, 1);
if (unlikely(r < 0)) { if (unlikely(r < 0)) {
trace_vhost_vdpa_net_load_cmd_retval(s, class, cmd, r);
return r; return r;
} }