This reverts commits 225d02cd and c9f7383c. While some parts of
the latter could be saved, I preferred a smooth, complete revert.
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
qemu-timer.c | 66 +++++++++++++++++++++++++++++++--------------------------
1 files changed, 36 insertions(+), 30 deletions(-)
diff --git a/qemu-timer.c b/qemu-timer.c
index 06fa507..4499e0c 100644
--- a/qemu-timer.c
+++ b/qemu-timer.c
@@ -110,9 +110,12 @@ static int64_t cpu_get_clock(void)
}
}
+#ifndef CONFIG_IOTHREAD
static int64_t qemu_icount_delta(void)
{
- if (use_icount == 1) {
+ if (!use_icount) {
+ return 5000 * (int64_t) 1000000;
+ } else if (use_icount == 1) {
/* When not using an adaptive execution frequency
we tend to get badly out of sync with real time,
so just delay for a reasonable amount of time. */
@@ -121,6 +124,7 @@ static int64_t qemu_icount_delta(void)
return cpu_get_icount() - cpu_get_clock();
}
}
+#endif
/* enable cpu_get_ticks() */
void cpu_enable_ticks(void)
@@ -1069,39 +1073,43 @@ void quit_timers(void)
int qemu_calculate_timeout(void)
{
+#ifndef CONFIG_IOTHREAD
int timeout;
- int64_t add;
- int64_t delta;
- /* When using icount, making forward progress with qemu_icount when the
- guest CPU is idle is critical. We only use the static io-thread timeout
- for non icount runs. */
- if (!use_icount || !vm_running) {
- return 5000;
- }
-
- /* Advance virtual time to the next event. */
- delta = qemu_icount_delta();
- if (delta > 0) {
- /* If virtual time is ahead of real time then just
- wait for IO. */
- timeout = (delta + 999999) / 1000000;
- } else {
- /* Wait for either IO to occur or the next
- timer event. */
- add = qemu_next_deadline();
- /* We advance the timer before checking for IO.
- Limit the amount we advance so that early IO
- activity won't get the guest too far ahead. */
- if (add > 10000000)
- add = 10000000;
- delta += add;
- qemu_icount += qemu_icount_round (add);
- timeout = delta / 1000000;
- if (timeout < 0)
- timeout = 0;
+ if (!vm_running) {
+ timeout = 5000;
+ } else {
+ /* XXX: use timeout computed from timers */
+ int64_t add;
+ int64_t delta;
+ /* Advance virtual time to the next event. */
+ delta = qemu_icount_delta();
+ if (delta > 0) {
+ /* If virtual time is ahead of real time then just
+ wait for IO. */
+ timeout = (delta + 999999) / 1000000;
+ } else {
+ /* Wait for either IO to occur or the next
+ timer event. */
+ add = qemu_next_deadline();
+ /* We advance the timer before checking for IO.
+ Limit the amount we advance so that early IO
+ activity won't get the guest too far ahead. */
+ if (add > 10000000) {
+ add = 10000000;
+ }
+ delta += add;
+ qemu_icount += qemu_icount_round(add);
+ timeout = delta / 1000000;
+ if (timeout < 0) {
+ timeout = 0;
+ }
+ }
}
return timeout;
+#else /* CONFIG_IOTHREAD */
+ return 1000;
+#endif
}
--
1.7.4
