From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
To: qemu-devel@nongnu.org
Cc: pbonzini@redhat.com, xen-devel@lists.xensource.com,
jan.kiszka@siemens.com, avi@redhat.com,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: [PATCH v6 4/5] qemu_next_alarm_deadline: check the expire time of a clock only if it is enabled
Date: Fri, 13 Apr 2012 19:35:03 +0100 [thread overview]
Message-ID: <1334342104-30546-4-git-send-email-stefano.stabellini@eu.citrix.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1204131918380.26786@kaball-desktop>
Also delta in qemu_next_alarm_deadline is a 64 bit value so set the
default to INT64_MAX instead of INT32_MAX.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
qemu-timer.c | 10 ++++------
1 files changed, 4 insertions(+), 6 deletions(-)
diff --git a/qemu-timer.c b/qemu-timer.c
index fe4cd6f..1166beb 100644
--- a/qemu-timer.c
+++ b/qemu-timer.c
@@ -106,23 +106,21 @@ static inline int alarm_has_dynticks(struct qemu_alarm_timer *t)
static int64_t qemu_next_alarm_deadline(void)
{
- int64_t delta;
+ int64_t delta = INT64_MAX;
int64_t rtdelta;
- if (!use_icount && vm_clock->active_timers) {
+ if (!use_icount && vm_clock->enabled && vm_clock->active_timers) {
delta = vm_clock->active_timers->expire_time -
qemu_get_clock_ns(vm_clock);
- } else {
- delta = INT32_MAX;
}
- if (host_clock->active_timers) {
+ if (host_clock->enabled && host_clock->active_timers) {
int64_t hdelta = host_clock->active_timers->expire_time -
qemu_get_clock_ns(host_clock);
if (hdelta < delta) {
delta = hdelta;
}
}
- if (rt_clock->active_timers) {
+ if (rt_clock->enabled && rt_clock->active_timers) {
rtdelta = (rt_clock->active_timers->expire_time -
qemu_get_clock_ns(rt_clock));
if (rtdelta < delta) {
--
1.7.2.5
next prev parent reply other threads:[~2012-04-13 18:35 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-13 18:33 [PATCH v6 0/5] prevent QEMU from waking up needlessly Stefano Stabellini
2012-04-13 18:35 ` [PATCH v6 1/5] xen: do not initialize the interval timer and PCSPK emulator Stefano Stabellini
2012-04-13 18:35 ` [PATCH v6 2/5] xen: disable rtc_clock Stefano Stabellini
2012-04-13 18:35 ` [PATCH v6 3/5] timers: the rearm function should be able to handle delta = INT64_MAX Stefano Stabellini
2012-04-13 18:35 ` Stefano Stabellini [this message]
2012-04-13 18:35 ` [PATCH v6 5/5] main_loop_wait: block indefinitely Stefano Stabellini
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