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authorLai Jiangshan <laijs@cn.fujitsu.com>2009-03-25 16:58:39 +0800
committerIngo Molnar <mingo@elte.hu>2009-03-25 18:32:34 +0100
commit220ba351dfa57eca4bec5ce0098a276446a47958 (patch)
treee0990d566ef8c19a291ad871caaf94fdd3d57008 /kernel
parente6f489013b985b58d096a3091ece0ed579367232 (diff)
trace_stat: keep original order
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>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/trace/trace_stat.c18
1 files changed, 8 insertions, 10 deletions
diff --git a/kernel/trace/trace_stat.c b/kernel/trace/trace_stat.c
index 8c129dd480a..acdebd771a9 100644
--- a/kernel/trace/trace_stat.c
+++ b/kernel/trace/trace_stat.c
@@ -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);