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input: limit kbd queue depth 

input: don't queue delay if paused
 input: Add trace event for empty keyboard queue
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Merge remote-tracking branch 'kraxel/tags/pull-input-20170504-1' into staging

input: limit kbd queue depth
input: don't queue delay if paused
input: Add trace event for empty keyboard queue

# gpg: Signature made Thu 04 May 2017 06:48:37 AM BST
# gpg:                using RSA key 0x4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* kraxel/tags/pull-input-20170504-1:
  input: Add trace event for empty keyboard queue
  input: don't queue delay if paused
  input: limit kbd queue depth

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2017-05-05 16:30:59 +01:00
parent 317134bb54 2222e0a633
commit dd76c10f9f
3 changed files with 20 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
hw/input/hid.c
View File

@ -256,6 +256,10 @@ static void hid_keyboard_process_keycode(HIDState *hs)
slot = hs->head & QUEUE_MASK; QUEUE_INCR(hs->head); hs->n--;
keycode = hs->kbd.keycodes[slot];
if (!hs->n) {
trace_hid_kbd_queue_empty();
}
key = keycode & 0x7f;
index = key | ((hs->kbd.modifiers & (1 << 8)) >> 1);
hid_code = hid_usage_keys[index];

1
hw/input/trace-events
View File

@ -24,6 +24,7 @@ milkymist_softusb_pulse_irq(void) "Pulse IRQ"
# hw/input/hid.c
hid_kbd_queue_full(void) "queue full"
hid_kbd_queue_empty(void) "queue empty"
# hw/input/virtio
virtio_input_queue_full(void) "queue full"

18
ui/input.c
View File

@ -41,6 +41,8 @@ static QTAILQ_HEAD(QemuInputEventQueueHead, QemuInputEventQueue) kbd_queue =
QTAILQ_HEAD_INITIALIZER(kbd_queue);
static QEMUTimer *kbd_timer;
static uint32_t kbd_default_delay_ms = 10;
static uint32_t queue_count;
static uint32_t queue_limit = 1024;
QemuInputHandlerState *qemu_input_handler_register(DeviceState *dev,
QemuInputHandler *handler)
@ -268,6 +270,7 @@ static void qemu_input_queue_process(void *opaque)
break;
}
QTAILQ_REMOVE(queue, item, node);
queue_count--;
g_free(item);
}
}
@ -282,6 +285,7 @@ static void qemu_input_queue_delay(struct QemuInputEventQueueHead *queue,
item->delay_ms = delay_ms;
item->timer = timer;
QTAILQ_INSERT_TAIL(queue, item, node);
queue_count++;
if (start_timer) {
timer_mod(item->timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL)
@ -298,6 +302,7 @@ static void qemu_input_queue_event(struct QemuInputEventQueueHead *queue,
item->src = src;
item->evt = evt;
QTAILQ_INSERT_TAIL(queue, item, node);
queue_count++;
}
static void qemu_input_queue_sync(struct QemuInputEventQueueHead *queue)
@ -306,6 +311,7 @@ static void qemu_input_queue_sync(struct QemuInputEventQueueHead *queue)
item->type = QEMU_INPUT_QUEUE_SYNC;
QTAILQ_INSERT_TAIL(queue, item, node);
queue_count++;
}
void qemu_input_event_send_impl(QemuConsole *src, InputEvent *evt)
@ -381,7 +387,7 @@ void qemu_input_event_send_key(QemuConsole *src, KeyValue *key, bool down)
qemu_input_event_send(src, evt);
qemu_input_event_sync();
qapi_free_InputEvent(evt);
} else {
} else if (queue_count < queue_limit) {
qemu_input_queue_event(&kbd_queue, src, evt);
qemu_input_queue_sync(&kbd_queue);
}
@ -405,12 +411,18 @@ void qemu_input_event_send_key_qcode(QemuConsole *src, QKeyCode q, bool down)
void qemu_input_event_send_key_delay(uint32_t delay_ms)
{
if (!runstate_is_running() && !runstate_check(RUN_STATE_SUSPENDED)) {
return;
}
if (!kbd_timer) {
kbd_timer = timer_new_ms(QEMU_CLOCK_VIRTUAL, qemu_input_queue_process,
&kbd_queue);
}
qemu_input_queue_delay(&kbd_queue, kbd_timer,
delay_ms ? delay_ms : kbd_default_delay_ms);
if (queue_count < queue_limit) {
qemu_input_queue_delay(&kbd_queue, kbd_timer,
delay_ms ? delay_ms : kbd_default_delay_ms);
}
}
InputEvent *qemu_input_event_new_btn(InputButton btn, bool down)