diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2016-06-23 11:51:35 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2016-07-12 09:25:28 +0200 |
| commit | c80276b4206d534daaaf87305df5805db1b8db02 (patch) | |
| tree | fa8fc8e0b65d1cc219fc975a18152614a8e4f0a3 | |
| parent | d7b7f526b18dacda8ee559dc18c13d4430a78b68 (diff) | |
input: add trace events for full queues
It isn't unusual to happen, for example during reboot when the guest
doesn't reveice events for a while. So better don't flood stderr
with alarming messages. Turn them into tracepoints instead so they
can be enabled in case they are needed for trouble-shooting.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1466675495-28797-1-git-send-email-kraxel@redhat.com
| -rw-r--r-- | hw/input/hid.c | 3 | ||||
| -rw-r--r-- | hw/input/trace-events | 6 | ||||
| -rw-r--r-- | hw/input/virtio-input.c | 3 |
3 files changed, 10 insertions, 2 deletions
diff --git a/hw/input/hid.c b/hw/input/hid.c index d92c7463ba..5e2850e655 100644 --- a/hw/input/hid.c +++ b/hw/input/hid.c @@ -27,6 +27,7 @@ #include "ui/console.h" #include "qemu/timer.h" #include "hw/input/hid.h" +#include "trace.h" #define HID_USAGE_ERROR_ROLLOVER 0x01 #define HID_USAGE_POSTFAIL 0x02 @@ -234,7 +235,7 @@ static void hid_keyboard_event(DeviceState *dev, QemuConsole *src, key->down, scancodes); if (hs->n + count > QUEUE_LENGTH) { - fprintf(stderr, "usb-kbd: warning: key event queue full\n"); + trace_hid_kbd_queue_full(); return; } for (i = 0; i < count; i++) { diff --git a/hw/input/trace-events b/hw/input/trace-events index 00fcec12b9..f24dff2f8b 100644 --- a/hw/input/trace-events +++ b/hw/input/trace-events @@ -23,3 +23,9 @@ milkymist_softusb_memory_write(uint32_t addr, uint32_t value) "addr %08x value % milkymist_softusb_mevt(uint8_t m) "m %d" milkymist_softusb_kevt(uint8_t m) "m %d" milkymist_softusb_pulse_irq(void) "Pulse IRQ" + +# hw/input/hid.c +hid_kbd_queue_full(void) "queue full" + +# hw/input/virtio +virtio_input_queue_full(void) "queue full" diff --git a/hw/input/virtio-input.c b/hw/input/virtio-input.c index f59749a943..edf69903a6 100644 --- a/hw/input/virtio-input.c +++ b/hw/input/virtio-input.c @@ -7,6 +7,7 @@ #include "qemu/osdep.h" #include "qapi/error.h" #include "qemu/iov.h" +#include "trace.h" #include "hw/qdev.h" #include "hw/virtio/virtio.h" @@ -47,7 +48,7 @@ void virtio_input_send(VirtIOInput *vinput, virtio_input_event *event) virtqueue_get_avail_bytes(vinput->evt, &have, NULL, need, 0); if (have < need) { vinput->qindex = 0; - fprintf(stderr, "%s: ENOSPC in vq, dropping events\n", __func__); + trace_virtio_input_queue_full(); return; } |