vhost-user: make trace events more readable
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru> Reviewed-by: Raphael Norwitz <raphael.s.norwitz@gmail.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Message-Id: <20260420200339.708640-21-vsementsov@yandex-team.ru>
Vladimir Sementsov-Ogievskiy committed
Apr 20, 2026 at 23:03 UTC
6fdb2219f46e39df9f4182e53e0f7f3e277e92f1
2 files changed
+63
-4
hw/virtio/trace-events
+2
-2
@@ -25,8 +25,8 @@ vhost_user_set_mem_table_withfd(int index, const char *name, uint64_t memory_siz
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vhost_user_postcopy_waker(const char *rb, uint64_t rb_offset) "%s + 0x%"PRIx64
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vhost_user_postcopy_waker_found(uint64_t client_addr) "0x%"PRIx64
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vhost_user_postcopy_waker_nomatch(const char *rb, uint64_t rb_offset) "%s + 0x%"PRIx64
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-vhost_user_read(uint32_t req, uint32_t flags) "req:%d flags:0x%"PRIx32""
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-vhost_user_write(uint32_t req, uint32_t flags) "req:%d flags:0x%"PRIx32""
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+vhost_user_read(uint32_t req, const char *req_name, uint32_t flags) "req:%d (%s) flags:0x%"PRIx32""
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+vhost_user_write(uint32_t req, const char *req_name, uint32_t flags) "req:%d (%s) flags:0x%"PRIx32""
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vhost_user_create_notifier(int idx, void *n) "idx:%d n:%p"
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# vhost-vdpa.c
hw/virtio/vhost-user.c
+61
-2
@@ -114,6 +114,63 @@ typedef enum VhostUserBackendRequest {
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VHOST_USER_BACKEND_MAX
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} VhostUserBackendRequest;
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+#define VHOST_USER_CASE(name) \
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+ case VHOST_USER_##name: \
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+ return #name;
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+
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+static const char *vhost_req_name(VhostUserRequest req)
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+{
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+ switch (req) {
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+ VHOST_USER_CASE(NONE)
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+ VHOST_USER_CASE(GET_FEATURES)
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+ VHOST_USER_CASE(SET_FEATURES)
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+ VHOST_USER_CASE(SET_OWNER)
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+ VHOST_USER_CASE(RESET_OWNER)
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+ VHOST_USER_CASE(SET_MEM_TABLE)
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+ VHOST_USER_CASE(SET_LOG_BASE)
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+ VHOST_USER_CASE(SET_LOG_FD)
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+ VHOST_USER_CASE(SET_VRING_NUM)
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+ VHOST_USER_CASE(SET_VRING_ADDR)
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+ VHOST_USER_CASE(SET_VRING_BASE)
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+ VHOST_USER_CASE(GET_VRING_BASE)
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+ VHOST_USER_CASE(SET_VRING_KICK)
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+ VHOST_USER_CASE(SET_VRING_CALL)
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+ VHOST_USER_CASE(SET_VRING_ERR)
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+ VHOST_USER_CASE(GET_PROTOCOL_FEATURES)
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+ VHOST_USER_CASE(SET_PROTOCOL_FEATURES)
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+ VHOST_USER_CASE(GET_QUEUE_NUM)
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+ VHOST_USER_CASE(SET_VRING_ENABLE)
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+ VHOST_USER_CASE(SEND_RARP)
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+ VHOST_USER_CASE(NET_SET_MTU)
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+ VHOST_USER_CASE(SET_BACKEND_REQ_FD)
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+ VHOST_USER_CASE(IOTLB_MSG)
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+ VHOST_USER_CASE(SET_VRING_ENDIAN)
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+ VHOST_USER_CASE(GET_CONFIG)
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+ VHOST_USER_CASE(SET_CONFIG)
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+ VHOST_USER_CASE(CREATE_CRYPTO_SESSION)
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+ VHOST_USER_CASE(CLOSE_CRYPTO_SESSION)
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+ VHOST_USER_CASE(POSTCOPY_ADVISE)
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+ VHOST_USER_CASE(POSTCOPY_LISTEN)
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+ VHOST_USER_CASE(POSTCOPY_END)
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+ VHOST_USER_CASE(GET_INFLIGHT_FD)
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+ VHOST_USER_CASE(SET_INFLIGHT_FD)
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+ VHOST_USER_CASE(GPU_SET_SOCKET)
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+ VHOST_USER_CASE(RESET_DEVICE)
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+ VHOST_USER_CASE(GET_MAX_MEM_SLOTS)
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+ VHOST_USER_CASE(ADD_MEM_REG)
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+ VHOST_USER_CASE(REM_MEM_REG)
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+ VHOST_USER_CASE(SET_STATUS)
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+ VHOST_USER_CASE(GET_STATUS)
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+ VHOST_USER_CASE(GET_SHARED_OBJECT)
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+ VHOST_USER_CASE(SET_DEVICE_STATE_FD)
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+ VHOST_USER_CASE(CHECK_DEVICE_STATE)
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+ default:
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+ return "<unknown>";
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+ }
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+}
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+
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+#undef VHOST_USER_CASE
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+
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typedef struct VhostUserMemoryRegion {
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uint64_t guest_phys_addr;
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uint64_t memory_size;
@@ -308,7 +365,8 @@ static int vhost_user_read_header(struct vhost_dev *dev, VhostUserMsg *msg)
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return -EPROTO;
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}
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- trace_vhost_user_read(msg->hdr.request, msg->hdr.flags);
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+ trace_vhost_user_read(msg->hdr.request,
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+ vhost_req_name(msg->hdr.request), msg->hdr.flags);
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return 0;
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}
@@ -428,7 +486,8 @@ static int vhost_user_write(struct vhost_dev *dev, VhostUserMsg *msg,
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return ret < 0 ? -saved_errno : -EIO;
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}
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- trace_vhost_user_write(msg->hdr.request, msg->hdr.flags);
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+ trace_vhost_user_write(msg->hdr.request, vhost_req_name(msg->hdr.request),
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+ msg->hdr.flags);
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return 0;
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}