From: Antti Kantee <pooka@iki.fi>
Date: Tue, 13 Jan 2015 00:42:27 +0000 (+0100)
Subject: Use 64bit values for minios sched sleeps
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=1e71553faec32af113f1d91c8331341eed320ea5;p=rumpuser-xen.git

Use 64bit values for minios sched sleeps

fixes issues when current _wall_ time in msecs cannot be held in
32bit uint (well, uptime too, but that didn't happen quite a quickly)
---

diff --git a/lib/_lwp.c b/lib/_lwp.c
index 9bf185f..2f7671c 100644
--- a/lib/_lwp.c
+++ b/lib/_lwp.c
@@ -177,7 +177,7 @@ ___lwp_park60(clockid_t clock_id, int flags, const struct timespec *ts,
 		_lwp_unpark(unpark, unparkhint);
 
 	if (ts) {
-		uint32_t msecs = ts->tv_sec*1000 + ts->tv_nsec/(1000*1000);
+		uint64_t msecs = ts->tv_sec*1000 + ts->tv_nsec/(1000*1000);
 		
 		if (flags & TIMER_ABSTIME) {
 			rv = minios_absmsleep(msecs);
diff --git a/xen/include/mini-os/sched.h b/xen/include/mini-os/sched.h
index 3038364..4436cc8 100644
--- a/xen/include/mini-os/sched.h
+++ b/xen/include/mini-os/sched.h
@@ -52,7 +52,7 @@ void minios_schedule(void);
 
 void minios_wake(struct thread *thread);
 void minios_block(struct thread *thread);
-int minios_msleep(uint32_t millisecs);
-int minios_absmsleep(uint32_t millisecs);
+int minios_msleep(uint64_t millisecs);
+int minios_absmsleep(uint64_t millisecs);
 
 #endif /* __MINIOS_SCHED_H__ */
diff --git a/xen/sched.c b/xen/sched.c
index 9d2dfd7..5293ec2 100644
--- a/xen/sched.c
+++ b/xen/sched.c
@@ -262,16 +262,22 @@ dosleep(s_time_t wakeuptime)
     return rv;
 }
 
-int minios_msleep(uint32_t millisecs)
+int minios_msleep(uint64_t millisecs)
 {
 
     return dosleep(NOW() + MILLISECS(millisecs));
 }
 
-int minios_absmsleep(uint32_t millisecs)
+int minios_absmsleep(uint64_t millisecs)
 {
+    uint32_t secs;
+    uint64_t nsecs;
 
-    return dosleep(MILLISECS(millisecs));
+    /* oh the silliness! */
+    minios_clock_wall(&secs, &nsecs);
+    millisecs -= 1000ULL*(uint64_t)secs + nsecs/(1000ULL*1000);
+
+    return dosleep(MILLISECS(millisecs) + NOW());
 }
 
 void minios_wake(struct thread *thread)