bitkeeper revision 1.1159.1.312 (41837e24AgGTJo-4Cu3-XiU5i0cX2w)

Some very small time cleanups. Also call cur_timer->init during resume.

linux-2.6.9-xen-sparse/arch/xen/i386/kernel/time.c

@@ -675,21 +675,26 @@ int set_timeout_timer(void)
 
 void time_suspend(void)
 {
+	/* nothing */
 }
 
+/* No locking required. We are only CPU running, and interrupts are off. */
 void time_resume(void)
 {
-    unsigned long flags;
-    write_seqlock_irqsave(&xtime_lock, flags);
-    /* Get timebases for new environment. */ 
-    __get_time_values_from_xen();
-    /* Reset our own concept of passage of system time. */
-    processed_system_time = shadow_system_time;
-    /* Accept a warp in UTC (wall-clock) time. */
-    last_seen_tv.tv_sec = 0;
-    /* Make sure we resync UTC time with Xen on next timer interrupt. */
-    last_update_from_xen = 0;
-    write_sequnlock_irqrestore(&xtime_lock, flags);
+	if (cur_timer->init(NULL) != 0)
+		BUG();
+
+	/* Get timebases for new environment. */ 
+	__get_time_values_from_xen();
+
+	/* Reset our own concept of passage of system time. */
+	processed_system_time = shadow_system_time;
+
+	/* Accept a warp in UTC (wall-clock) time. */
+	last_seen_tv.tv_sec = 0;
+
+	/* Make sure we resync UTC time with Xen on next timer interrupt. */
+	last_update_from_xen = 0;
 }
 
 /*

linux-2.6.9-xen-sparse/arch/xen/i386/kernel/timers/timer_tsc.c

@@ -332,7 +332,6 @@ static inline void cpufreq_delayed_get(void) { return; }
 
 static int __init init_tsc(char* override)
 {
-	unsigned long long alarm;
 	u64 __cpu_khz;
 
 	__cpu_khz = HYPERVISOR_shared_info->cpu_freq;
@@ -353,9 +352,7 @@ static int __init init_tsc(char* override)
 
 	set_cyc2ns_scale(cpu_khz/1000);
 
-	rdtscll(alarm);
-
-	use_tsc=1;
+	use_tsc = 1;
 
 	return 0;
 }