Dump the data one time per boot.

[linux-2.6.git] / linux-2.6-630-sched-fix.patch

diff --git a/linux-2.6-630-sched-fix.patch b/linux-2.6-630-sched-fix.patch
index 150a12c..7ebfc53 100644 (file)
--- a/linux-2.6-630-sched-fix.patch
+++ b/linux-2.6-630-sched-fix.patch
@@ -1,17 +1,19 @@
---- linux-2.6.22-630/kernel/sched.c.orig       2008-04-23 17:09:21.000000000 -0400
-+++ linux-2.6.22-630/kernel/sched.c    2008-04-23 17:10:23.000000000 -0400
-@@ -3656,6 +3656,10 @@
- /* CHOPSTIX */
+diff -Nurp linux-2.6.22-620/kernel/sched.c linux-2.6.22-630/kernel/sched.c
+--- linux-2.6.22-620/kernel/sched.c    2008-06-23 17:20:25.000000000 -0400
++++ linux-2.6.22-630/kernel/sched.c    2008-06-24 11:28:41.000000000 -0400
+@@ -3635,6 +3635,11 @@ struct event_spec {
+ };
  #endif
  
 +/* Bypass the vx_unhold infinite loop */
 +unsigned int merry;
++static int debug_630_dumped = 0;
 +EXPORT_SYMBOL(merry);
 +
  asmlinkage void __sched schedule(void)
  {
        struct task_struct *prev, *next;
-@@ -3740,14 +3744,22 @@
+@@ -3722,14 +3727,42 @@ need_resched_nonpreemptible:
  
        cpu = smp_processor_id();
        vx_set_rq_time(rq, jiffies);
@@ -28,8 +30,28 @@
 +                      merry++;
                        goto try_unhold;
 +              }
-+              else if (merry==10) {
-+                      BUG();
++              else if (merry==10 && !debug_630_dumped) {
++                      debug_630_dumped = 1;
++                      printk(KERN_EMERG "merry==10!\n");
++                      if (list_empty(&rq->hold_queue))
++                              printk(KERN_EMERG "hold queue is empty\n");
++                      else {
++                              struct list_head *l, *n;
++                              printk(KERN_EMERG "rq->norm_time = %lu, rq->idle_time = %lu, rq->idle_skip = %d\n",
++                                      rq->norm_time, rq->idle_time, rq->idle_skip);
++                              list_for_each_safe(l, n, &rq->hold_queue) {
++                                      struct task_struct *p;
++                                      struct _vx_sched_pc *sched_pc;
++                                      struct vx_info *vxi;
++
++                                      p = list_entry(l, struct task_struct, run_list);
++                                      vxi = p->vx_info;
++                                      sched_pc = &vx_per_cpu(vxi, sched_pc, cpu);
++
++                                      printk(KERN_EMERG "%u: sched_pc->norm_time = %lu, sched_pc->idle_time = %lu\n", vxi->vx_id,
++                                              sched_pc->norm_time, sched_pc->idle_time);
++                              }
++                      }
 +              }
 +