Merge branch 'master'

[pandora-kernel.git] / kernel / timer.c

diff --git a/kernel/timer.c b/kernel/timer.c
index f4152fc..6a2e5f8 100644 (file)
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -752,6 +752,15 @@ static void second_overflow(void)
     else
        time_adj += (time_adj >> 2) + (time_adj >> 5);
 #endif
+#if HZ == 250
+    /* Compensate for (HZ==250) != (1 << SHIFT_HZ).
+     * Add 1.5625% and 0.78125% to get 255.85938; => only 0.05% error (p. 14)
+     */
+    if (time_adj < 0)
+       time_adj -= (-time_adj >> 6) + (-time_adj >> 7);
+    else
+       time_adj += (time_adj >> 6) + (time_adj >> 7);
+#endif
 #if HZ == 1000
     /* Compensate for (HZ==1000) != (1 << SHIFT_HZ).
      * Add 1.5625% and 0.78125% to get 1023.4375; => only 0.05% error (p. 14)
@@ -1151,19 +1160,22 @@ fastcall signed long __sched schedule_timeout(signed long timeout)
  out:
        return timeout < 0 ? 0 : timeout;
 }
-
 EXPORT_SYMBOL(schedule_timeout);
 
+/*
+ * We can use __set_current_state() here because schedule_timeout() calls
+ * schedule() unconditionally.
+ */
 signed long __sched schedule_timeout_interruptible(signed long timeout)
 {
-       set_current_state(TASK_INTERRUPTIBLE);
+       __set_current_state(TASK_INTERRUPTIBLE);
        return schedule_timeout(timeout);
 }
 EXPORT_SYMBOL(schedule_timeout_interruptible);
 
 signed long __sched schedule_timeout_uninterruptible(signed long timeout)
 {
-       set_current_state(TASK_UNINTERRUPTIBLE);
+       __set_current_state(TASK_UNINTERRUPTIBLE);
        return schedule_timeout(timeout);
 }
 EXPORT_SYMBOL(schedule_timeout_uninterruptible);