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kernel: merge a proposed fix from LKML for fixing infinite data returned by /proc/timer_list 

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 37484
owl
Felix Fietkau 2013-07-20 18:35:54 +00:00
parent a0129dfd8e
commit bb141e06a2
1 changed files with 45 additions and 0 deletions
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45
target/linux/generic/patches-3.10/030-timer_list_fix.patch Normal file
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@ -0,0 +1,45 @@
Patch by: Nathan Zimmer <nzimmer@sgi.com>
Fixes a regression in the commit
"timer_list: Convert timer list to be a proper seq_file" which causes
/proc/timer_list to return an infinite amount of data
--- a/kernel/time/timer_list.c
+++ b/kernel/time/timer_list.c
@@ -305,24 +305,26 @@ static void *timer_list_start(struct seq
if (!*offset) {
iter->cpu = -1;
iter->now = ktime_to_ns(ktime_get());
- } else if (iter->cpu >= nr_cpu_ids) {
+ } else {
+ iter->cpu = cpumask_next(iter->cpu, cpu_online_mask);
+ if (iter->cpu >= nr_cpu_ids) {
#ifdef CONFIG_GENERIC_CLOCKEVENTS
- if (!iter->second_pass) {
- iter->cpu = -1;
- iter->second_pass = true;
- } else
- return NULL;
+ if (!iter->second_pass) {
+ iter->cpu = -1;
+ iter->second_pass = true;
+ } else
+ return NULL;
#else
- return NULL;
+ return NULL;
#endif
+ }
}
+
return iter;
}
static void *timer_list_next(struct seq_file *file, void *v, loff_t *offset)
{
- struct timer_list_iter *iter = file->private;
- iter->cpu = cpumask_next(iter->cpu, cpu_online_mask);
++*offset;
return timer_list_start(file, offset);
}