[ARM] 4066/1: correct a comment about PXA's sched_clock range

[linux-2.6] / arch / arm / mach-pxa / generic.c

diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
index 6ae605857ca9bfb6764bfbe68761ff960ba35ddb..9de1278d234f86d655880c6f587e10b785cb843a 100644 (file)
--- a/arch/arm/mach-pxa/generic.c
+++ b/arch/arm/mach-pxa/generic.c
@@ -76,7 +76,9 @@ unsigned long long sched_clock(void)
        /*
         * 96-bit math to perform tick * NSEC_PER_SEC / CLOCK_TICK_RATE for
         * any value of CLOCK_TICK_RATE. Max value is in the 80 thousand
-        * years range which is nice, but with higher computation cost.
+        * years range and truncation to unsigned long long limits it to
+        * sched_clock's max range of ~584 years.  This is nice but with
+        * higher computation cost.
         */
        {
                union {