target/linux/generic/patches-3.10/030-timer_list_fix.patch

   1 Patch by: Nathan Zimmer <nzimmer@sgi.com>
   2
   3 Fixes a regression in the commit
   4 "timer_list: Convert timer list to be a proper seq_file" which causes
   5 /proc/timer_list to return an infinite amount of data
   6
   7
   8 --- a/kernel/time/timer_list.c
   9 +++ b/kernel/time/timer_list.c
  10 @@ -305,24 +305,26 @@ static void *timer_list_start(struct seq
  11         if (!*offset) {
  12                 iter->cpu = -1;
  13                 iter->now = ktime_to_ns(ktime_get());
  14 -       } else if (iter->cpu >= nr_cpu_ids) {
  15 +       } else {
  16 +               iter->cpu = cpumask_next(iter->cpu, cpu_online_mask);
  17 +               if (iter->cpu >= nr_cpu_ids) {
  18  #ifdef CONFIG_GENERIC_CLOCKEVENTS
  19 -               if (!iter->second_pass) {
  20 -                       iter->cpu = -1;
  21 -                       iter->second_pass = true;
  22 -               } else
  23 -                       return NULL;
  24 +                       if (!iter->second_pass) {
  25 +                               iter->cpu = -1;
  26 +                               iter->second_pass = true;
  27 +                       } else
  28 +                               return NULL;
  29  #else
  30 -               return NULL;
  31 +                       return NULL;
  32  #endif
  33 +               }
  34         }
  35 +
  36         return iter;
  37  }
  38
  39  static void *timer_list_next(struct seq_file *file, void *v, loff_t *offset)
  40  {
  41 -       struct timer_list_iter *iter = file->private;
  42 -       iter->cpu = cpumask_next(iter->cpu, cpu_online_mask);
  43         ++*offset;
  44         return timer_list_start(file, offset);
  45  }