[PATCH] perf vendor events: fix processing for xfs

[John Garry <john.garry@huawei.com>]

In the recently introduced support for vendor subdirectory,
the checking for directory entries under xfs (or any other fs
which does not support dirent.d_type) is missing the check
for links for current and parent directory. This can result
in a broken pmu_events.c being generated.

Fix this by adding the appropriate check in is_leaf_dir().

Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Signed-off-by: John Garry <john.garry@huawei.com>

diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index 1c01844..db3a594 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -873,7 +873,10 @@ static int is_leaf_dir(const char *fpath)
 		return 0;
 
 	while ((dir = readdir(d)) != NULL) {
-		if (dir->d_type == DT_DIR && dir->d_name[0] != '.') {
+		if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
+			continue;
+
+		if (dir->d_type == DT_DIR) {
 			res = 0;
 			break;
 		} else if (dir->d_type == DT_UNKNOWN) {
-- 
1.9.1