ahci: improve and limit spurious interrupt messages, take#3

[powerpc.git] / kernel / timer.c

diff --git a/kernel/timer.c b/kernel/timer.c
index 0256ab4..c2a8ccf 100644 (file)
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1146,11 +1146,15 @@ static inline void calc_load(unsigned long ticks)
        unsigned long active_tasks; /* fixed-point */
        static int count = LOAD_FREQ;
 
-       active_tasks = count_active_tasks();
-       for (count -= ticks; count < 0; count += LOAD_FREQ) {
-               CALC_LOAD(avenrun[0], EXP_1, active_tasks);
-               CALC_LOAD(avenrun[1], EXP_5, active_tasks);
-               CALC_LOAD(avenrun[2], EXP_15, active_tasks);
+       count -= ticks;
+       if (unlikely(count < 0)) {
+               active_tasks = count_active_tasks();
+               do {
+                       CALC_LOAD(avenrun[0], EXP_1, active_tasks);
+                       CALC_LOAD(avenrun[1], EXP_5, active_tasks);
+                       CALC_LOAD(avenrun[2], EXP_15, active_tasks);
+                       count += LOAD_FREQ;
+               } while (count < 0);
        }
 }
 
@@ -1340,11 +1344,10 @@ fastcall signed long __sched schedule_timeout(signed long timeout)
                 * should never happens anyway). You just have the printk()
                 * that will tell you if something is gone wrong and where.
                 */
-               if (timeout < 0)
-               {
+               if (timeout < 0) {
                        printk(KERN_ERR "schedule_timeout: wrong timeout "
-                               "value %lx from %p\n", timeout,
-                               __builtin_return_address(0));
+                               "value %lx\n", timeout);
+                       dump_stack();
                        current->state = TASK_RUNNING;
                        goto out;
                }