Pull video into test branch

[linux-drm-fsl-dcu.git] / arch / arm / kernel / time.c

diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index f7d5165796ef2e337ea6a8473c4db562535efb1c..3c8cdcfe8d4a9f72c9ffb3762a72b260be85d73c 100644 (file)
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -27,6 +27,9 @@
 #include <linux/profile.h>
 #include <linux/sysdev.h>
 #include <linux/timer.h>
+#include <linux/irq.h>
+
+#include <linux/mc146818rtc.h>
 
 #include <asm/leds.h>
 #include <asm/thread_info.h>
@@ -37,8 +40,6 @@
  */
 struct sys_timer *system_timer;
 
-extern unsigned long wall_jiffies;
-
 /* this needs a better home */
 DEFINE_SPINLOCK(rtc_lock);
 
@@ -86,6 +87,17 @@ unsigned long long __attribute__((weak)) sched_clock(void)
        return (unsigned long long)jiffies * (1000000000 / HZ);
 }
 
+/*
+ * An implementation of printk_clock() independent from
+ * sched_clock().  This avoids non-bootable kernels when
+ * printk_clock is enabled.
+ */
+unsigned long long printk_clock(void)
+{
+       return (unsigned long long)(jiffies - INITIAL_JIFFIES) *
+                       (1000000000 / HZ);
+}
+
 static unsigned long next_rtc_update;
 
 /*
@@ -221,10 +233,10 @@ EXPORT_SYMBOL(leds_event);
 #ifdef CONFIG_LEDS_TIMER
 static inline void do_leds(void)
 {
-       static unsigned int count = 50;
+       static unsigned int count = HZ/2;
 
        if (--count == 0) {
-               count = 50;
+               count = HZ/2;
                leds_event(led_timer);
        }
 }
@@ -237,16 +249,11 @@ void do_gettimeofday(struct timeval *tv)
 {
        unsigned long flags;
        unsigned long seq;
-       unsigned long usec, sec, lost;
+       unsigned long usec, sec;
 
        do {
                seq = read_seqbegin_irqsave(&xtime_lock, flags);
                usec = system_timer->offset();
-
-               lost = jiffies - wall_jiffies;
-               if (lost)
-                       usec += lost * USECS_PER_JIFFY;
-
                sec = xtime.tv_sec;
                usec += xtime.tv_nsec / 1000;
        } while (read_seqretry_irqrestore(&xtime_lock, seq, flags));
@@ -279,7 +286,6 @@ int do_settimeofday(struct timespec *tv)
         * done, and then undo it!
         */
        nsec -= system_timer->offset() * NSEC_PER_USEC;
-       nsec -= (jiffies - wall_jiffies) * TICK_NSEC;
 
        wtm_sec  = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec);
        wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec);
@@ -332,14 +338,14 @@ EXPORT_SYMBOL(restore_time_delta);
 /*
  * Kernel system timer support.
  */
-void timer_tick(struct pt_regs *regs)
+void timer_tick(void)
 {
-       profile_tick(CPU_PROFILING, regs);
+       profile_tick(CPU_PROFILING);
        do_leds();
        do_set_rtc();
        do_timer(1);
 #ifndef CONFIG_SMP
-       update_process_times(user_mode(regs));
+       update_process_times(user_mode(get_irq_regs()));
 #endif
 }