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usb-host: add trace events for iso xfers 

Replace iso transfer fprintf's with trace points.  Also rename existing
tracepoints so they all match usb_host_iso_*.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2012-07-03 15:43:49 +02:00
parent 7c37e6a4c4
commit c32da15188
2 changed files with 10 additions and 6 deletions
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10
hw/usb/host-linux.c
View File

@ -213,7 +213,7 @@ static int is_iso_started(USBHostDevice *s, int pid, int ep)
static void clear_iso_started(USBHostDevice *s, int pid, int ep)
{
trace_usb_host_ep_stop_iso(s->bus_num, s->addr, ep);
trace_usb_host_iso_stop(s->bus_num, s->addr, ep);
get_endp(s, pid, ep)->iso_started = 0;
}
@ -221,7 +221,7 @@ static void set_iso_started(USBHostDevice *s, int pid, int ep)
{
struct endp_data *e = get_endp(s, pid, ep);
trace_usb_host_ep_start_iso(s->bus_num, s->addr, ep);
trace_usb_host_iso_start(s->bus_num, s->addr, ep);
if (!e->iso_started) {
e->iso_started = 1;
e->inflight = 0;
@ -319,7 +319,8 @@ static void async_complete(void *opaque)
if (r < 0) {
if (errno == EAGAIN) {
if (urbs > 2) {
fprintf(stderr, "husb: %d iso urbs finished at once\n", urbs);
/* indicates possible latency issues */
trace_usb_host_iso_many_urbs(s->bus_num, s->addr, urbs);
}
return;
}
@ -352,7 +353,8 @@ static void async_complete(void *opaque)
urbs++;
inflight = change_iso_inflight(s, pid, ep, -1);
if (inflight == 0 && is_iso_started(s, pid, ep)) {
fprintf(stderr, "husb: out of buffers for iso stream\n");
/* can be latency issues, or simply end of stream */
trace_usb_host_iso_out_of_bufs(s->bus_num, s->addr, ep);
}
continue;
}

6
trace-events
View File

@ -368,8 +368,10 @@ usb_host_urb_complete(int bus, int addr, void *aurb, int status, int length, int
usb_host_urb_canceled(int bus, int addr, void *aurb) "dev %d:%d, aurb %p"
usb_host_ep_set_halt(int bus, int addr, int ep) "dev %d:%d, ep %d"
usb_host_ep_clear_halt(int bus, int addr, int ep) "dev %d:%d, ep %d"
usb_host_ep_start_iso(int bus, int addr, int ep) "dev %d:%d, ep %d"
usb_host_ep_stop_iso(int bus, int addr, int ep) "dev %d:%d, ep %d"
usb_host_iso_start(int bus, int addr, int ep) "dev %d:%d, ep %d"
usb_host_iso_stop(int bus, int addr, int ep) "dev %d:%d, ep %d"
usb_host_iso_out_of_bufs(int bus, int addr, int ep) "dev %d:%d, ep %d"
usb_host_iso_many_urbs(int bus, int addr, int count) "dev %d:%d, count %d"
usb_host_reset(int bus, int addr) "dev %d:%d"
usb_host_auto_scan_enabled(void)
usb_host_auto_scan_disabled(void)