X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=kernel%2Ftime%2Ftimekeeping.c;h=a3fa587c350c598063a17c903beeee99fe0f47e0;hb=cc7feea39bed2951cc29af3ad642f39a99dfe8d3;hp=ab46ae8c062b0b971aaae2fc28071d0cc01260ed;hpb=2d94dfc8c38edf63e91e48fd55c3a8822b6a9ced;p=linux-2.6

diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index ab46ae8c06..a3fa587c35 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -47,7 +47,7 @@ struct timespec wall_to_monotonic __attribute__ ((aligned (16)));
 static unsigned long total_sleep_time;		/* seconds */
 
 static struct timespec xtime_cache __attribute__ ((aligned (16)));
-static inline void update_xtime_cache(u64 nsec)
+void update_xtime_cache(u64 nsec)
 {
 	xtime_cache = xtime;
 	timespec_add_ns(&xtime_cache, nsec);
@@ -82,13 +82,12 @@ static inline s64 __get_nsec_offset(void)
 }
 
 /**
- * __get_realtime_clock_ts - Returns the time of day in a timespec
+ * getnstimeofday - Returns the time of day in a timespec
  * @ts:		pointer to the timespec to be set
  *
- * Returns the time of day in a timespec. Used by
- * do_gettimeofday() and get_realtime_clock_ts().
+ * Returns the time of day in a timespec.
  */
-static inline void __get_realtime_clock_ts(struct timespec *ts)
+void getnstimeofday(struct timespec *ts)
 {
 	unsigned long seq;
 	s64 nsecs;
@@ -104,30 +103,19 @@ static inline void __get_realtime_clock_ts(struct timespec *ts)
 	timespec_add_ns(ts, nsecs);
 }
 
-/**
- * getnstimeofday - Returns the time of day in a timespec
- * @ts:		pointer to the timespec to be set
- *
- * Returns the time of day in a timespec.
- */
-void getnstimeofday(struct timespec *ts)
-{
-	__get_realtime_clock_ts(ts);
-}
-
 EXPORT_SYMBOL(getnstimeofday);
 
 /**
  * do_gettimeofday - Returns the time of day in a timeval
  * @tv:		pointer to the timeval to be set
  *
- * NOTE: Users should be converted to using get_realtime_clock_ts()
+ * NOTE: Users should be converted to using getnstimeofday()
  */
 void do_gettimeofday(struct timeval *tv)
 {
 	struct timespec now;
 
-	__get_realtime_clock_ts(&now);
+	getnstimeofday(&now);
 	tv->tv_sec = now.tv_sec;
 	tv->tv_usec = now.tv_nsec/1000;
 }
@@ -157,6 +145,7 @@ int do_settimeofday(struct timespec *tv)
 
 	set_normalized_timespec(&xtime, sec, nsec);
 	set_normalized_timespec(&wall_to_monotonic, wtm_sec, wtm_nsec);
+	update_xtime_cache(0);
 
 	clock->error = 0;
 	ntp_clear();
@@ -202,8 +191,12 @@ static void change_clocksource(void)
 
 	tick_clock_notify();
 
+	/*
+	 * We're holding xtime lock and waking up klogd would deadlock
+	 * us on enqueue.  So no printing!
 	printk(KERN_INFO "Time: %s clocksource has been installed.\n",
 	       clock->name);
+	 */
 }
 #else
 static inline void change_clocksource(void) { }
@@ -211,9 +204,9 @@ static inline s64 __get_nsec_offset(void) { return 0; }
 #endif
 
 /**
- * timekeeping_is_continuous - check to see if timekeeping is free running
+ * timekeeping_valid_for_hres - Check if timekeeping is suitable for hres
  */
-int timekeeping_is_continuous(void)
+int timekeeping_valid_for_hres(void)
 {
 	unsigned long seq;
 	int ret;
@@ -262,8 +255,8 @@ void __init timekeeping_init(void)
 	xtime.tv_nsec = 0;
 	set_normalized_timespec(&wall_to_monotonic,
 		-xtime.tv_sec, -xtime.tv_nsec);
+	update_xtime_cache(0);
 	total_sleep_time = 0;
-
 	write_sequnlock_irqrestore(&xtime_lock, flags);
 }
 
@@ -300,6 +293,7 @@ static int timekeeping_resume(struct sys_device *dev)
 	}
 	/* Make sure that we have the correct xtime reference */
 	timespec_add_ns(&xtime, timekeeping_suspend_nsecs);
+	update_xtime_cache(0);
 	/* re-base the last cycle value */
 	clock->cycle_last = clocksource_read(clock);
 	clock->error = 0;
@@ -372,7 +366,7 @@ static __always_inline int clocksource_bigadjust(s64 error, s64 *interval,
 	 * with losing too many ticks, otherwise we would overadjust and
 	 * produce an even larger error.  The smaller the adjustment the
 	 * faster we try to adjust for it, as lost ticks can do less harm
-	 * here.  This is tuned so that an error of about 1 msec is adusted
+	 * here.  This is tuned so that an error of about 1 msec is adjusted
 	 * within about 1 sec (or 2^20 nsec in 2^SHIFT_HZ ticks).
 	 */
 	error2 = clock->error >> (TICK_LENGTH_SHIFT + 22 - 2 * SHIFT_HZ);