2.4.19-rc5

 kernel

diff -Naur -X /home/marcelo/lib/dontdiff linux.orig/kernel/timer.c linux/kernel/timer.c
--- linux.orig/kernel/timer.c   2001-10-08 17:41:41.000000000 +0000
+++ linux/kernel/timer.c   2002-08-01 06:42:37.000000000 +0000
@@ -101,6 +101,8 @@
    (struct timer_vec *)&tv1, &tv2, &tv3, &tv4, &tv5
 };
 
+static struct list_head * run_timer_list_running;
+
 #define NOOF_TVECS (sizeof(tvecs) / sizeof(tvecs[0]))
 
 void init_timervecs (void)
@@ -128,7 +130,9 @@
    unsigned long idx = expires - timer_jiffies;
    struct list_head * vec;
 
-   if (idx < TVR_SIZE) {
+   if (run_timer_list_running)
+      vec = run_timer_list_running;
+   else if (idx < TVR_SIZE) {
       int i = expires & TVR_MASK;
       vec = tv1.vec + i;
    } else if (idx < 1 << (TVR_BITS + TVN_BITS)) {
@@ -289,6 +293,7 @@
 {
    spin_lock_irq(&timerlist_lock);
    while ((long)(jiffies - timer_jiffies) >= 0) {
+      LIST_HEAD(queued);
       struct list_head *head, *curr;
       if (!tv1.index) {
          int n = 1;
@@ -296,6 +301,7 @@
             cascade_timers(tvecs[n]);
          } while (tvecs[n]->index == 1 && ++n < NOOF_TVECS);
       }
+      run_timer_list_running = &queued;
 repeat:
       head = tv1.vec + tv1.index;
       curr = head->next;
@@ -317,8 +323,18 @@
          timer_exit();
          goto repeat;
       }
+      run_timer_list_running = NULL;
       ++timer_jiffies; 
       tv1.index = (tv1.index + 1) & TVR_MASK;
+
+      curr = queued.next;
+      while (curr != &queued) {
+         struct timer_list *timer;
+
+         timer = list_entry(curr, struct timer_list, list);
+         curr = curr->next;
+         internal_add_timer(timer);
+      }         
    }
    spin_unlock_irq(&timerlist_lock);
 }