Some time ago, the last time which did not have dynticks was removed, so now all timers have dynticks.
I also removed a misleading error message for the dynticks timer. If timer_create fails, there is already an error message, and QEMU will use the unix timer which also provides dynamic ticks, therefore dynamic ticks are not disabled. v2: Remove two if statements because they were always true (thanks to Paolo Bonzini for this correction). Signed-off-by: Stefan Weil <s...@weilnetz.de> --- qemu-timer.c | 39 ++++++++------------------------------- 1 files changed, 8 insertions(+), 31 deletions(-) diff --git a/qemu-timer.c b/qemu-timer.c index 73ffe25..8dd8b9f 100644 --- a/qemu-timer.c +++ b/qemu-timer.c @@ -87,11 +87,6 @@ static bool qemu_timer_expired_ns(QEMUTimer *timer_head, int64_t current_time) return timer_head && (timer_head->expire_time <= current_time); } -static inline int alarm_has_dynticks(struct qemu_alarm_timer *t) -{ - return !!t->rearm; -} - static int64_t qemu_next_alarm_deadline(void) { int64_t delta; @@ -124,7 +119,6 @@ static int64_t qemu_next_alarm_deadline(void) static void qemu_rearm_alarm_timer(struct qemu_alarm_timer *t) { int64_t nearest_delta_ns; - assert(alarm_has_dynticks(t)); if (!rt_clock->active_timers && !vm_clock->active_timers && !host_clock->active_timers) { @@ -483,12 +477,9 @@ static void host_alarm_handler(int host_signum) if (!t) return; - if (alarm_has_dynticks(t) || - qemu_next_alarm_deadline () <= 0) { - t->expired = alarm_has_dynticks(t); - t->pending = true; - qemu_notify_event(); - } + t->expired = true; + t->pending = true; + qemu_notify_event(); } #if defined(__linux__) @@ -524,10 +515,6 @@ static int dynticks_start_timer(struct qemu_alarm_timer *t) if (timer_create(CLOCK_REALTIME, &ev, &host_timer)) { perror("timer_create"); - - /* disable dynticks */ - fprintf(stderr, "Dynamic Ticks disabled\n"); - return -1; } @@ -636,17 +623,14 @@ static void CALLBACK mm_alarm_handler(UINT uTimerID, UINT uMsg, if (!t) { return; } - if (alarm_has_dynticks(t) || qemu_next_alarm_deadline() <= 0) { - t->expired = alarm_has_dynticks(t); - t->pending = true; - qemu_notify_event(); - } + t->expired = true; + t->pending = true; + qemu_notify_event(); } static int mm_start_timer(struct qemu_alarm_timer *t) { TIMECAPS tc; - UINT flags; memset(&tc, 0, sizeof(tc)); timeGetDevCaps(&tc, sizeof(tc)); @@ -654,18 +638,11 @@ static int mm_start_timer(struct qemu_alarm_timer *t) mm_period = tc.wPeriodMin; timeBeginPeriod(mm_period); - flags = TIME_CALLBACK_FUNCTION; - if (alarm_has_dynticks(t)) { - flags |= TIME_ONESHOT; - } else { - flags |= TIME_PERIODIC; - } - mm_timer = timeSetEvent(1, /* interval (ms) */ mm_period, /* resolution */ mm_alarm_handler, /* function */ (DWORD_PTR)t, /* parameter */ - flags); + TIME_ONESHOT | TIME_CALLBACK_FUNCTION); if (!mm_timer) { fprintf(stderr, "Failed to initialize win32 alarm timer: %ld\n", @@ -720,7 +697,7 @@ static int win32_start_timer(struct qemu_alarm_timer *t) host_alarm_handler, t, 1, - alarm_has_dynticks(t) ? 3600000 : 1, + 3600000, WT_EXECUTEINTIMERTHREAD); if (!success) { -- 1.7.9