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trace_stat: keep original order

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Impact: make trace_stat files show items with the original order

trace_stat tracer reverse the items, it makes the output
looks a little ugly.

Example, when we read trace_stat/workqueues, we get cpu#7's stat.
at first, and then cpu#6... cpu#0.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Acked-by: Steven Rostedt <srostedt@redhat.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <49C9F23F.5040307@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Lai Jiangshan 2009-03-25 16:58:39 +08:00 committed by Ingo Molnar
parent e6f489013b
commit 220ba351df
1 changed files with 8 additions and 10 deletions
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18
kernel/trace/trace_stat.c
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@ -125,23 +125,21 @@ static int stat_seq_init(struct tracer_stat_session *session)
INIT_LIST_HEAD(&new_entry->list);
new_entry->stat = stat;
list_for_each_entry(iter_entry, &session->stat_list, list) {
list_for_each_entry_reverse(iter_entry, &session->stat_list,
list) {
/* Insertion with a descendent sorting */
if (ts->stat_cmp(new_entry->stat,
iter_entry->stat) > 0) {
if (ts->stat_cmp(iter_entry->stat,
new_entry->stat) >= 0) {
list_add_tail(&new_entry->list,
&iter_entry->list);
break;
/* The current smaller value */
} else if (list_is_last(&iter_entry->list,
&session->stat_list)) {
list_add(&new_entry->list, &iter_entry->list);
break;
}
}
/* The current larger value */
if (list_empty(&new_entry->list))
list_add(&new_entry->list, &session->stat_list);
}
exit:
mutex_unlock(&session->stat_mutex);