[ARM] 4066/1: correct a comment about PXA's sched_clock range
authorNicolas Pitre <nico@cam.org>
Fri, 22 Dec 2006 17:52:56 +0000 (18:52 +0100)
committerRussell King <rmk+kernel@arm.linux.org.uk>
Sat, 30 Dec 2006 17:05:07 +0000 (17:05 +0000)
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
arch/arm/mach-pxa/generic.c

index 6ae605857ca9bfb6764bfbe68761ff960ba35ddb..9de1278d234f86d655880c6f587e10b785cb843a 100644 (file)
@@ -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 {