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Commit d38e1d5a authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Linus Torvalds
Browse files

lockstat: better class name representation



optionally add class->name_version and class->subclass to the class name

Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 96645678
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+23 −1
Original line number Diff line number Diff line
@@ -421,8 +421,30 @@ static void seq_stats(struct seq_file *m, struct lock_stat_data *data)
	class = data->class;
	stats = &data->stats;

	snprintf(name, 38, "%s", class->name);
	namelen = 38;
	if (class->name_version > 1)
		namelen -= 2; /* XXX truncates versions > 9 */
	if (class->subclass)
		namelen -= 2;

	if (!class->name) {
		char str[KSYM_NAME_LEN];
		const char *key_name;

		key_name = __get_key_name(class->key, str);
		snprintf(name, namelen, "%s", key_name);
	} else {
		snprintf(name, namelen, "%s", class->name);
	}
	namelen = strlen(name);
	if (class->name_version > 1) {
		snprintf(name+namelen, 3, "#%d", class->name_version);
		namelen += 2;
	}
	if (class->subclass) {
		snprintf(name+namelen, 3, "/%d", class->subclass);
		namelen += 2;
	}

	if (stats->write_holdtime.nr) {
		if (stats->read_holdtime.nr)