Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/tools/perf/util/vdso.c b/tools/perf/util/vdso.c
index 741af20..ba4b439 100644
--- a/tools/perf/util/vdso.c
+++ b/tools/perf/util/vdso.c
@@ -10,18 +10,21 @@
 #include <linux/kernel.h>
 
 #include "vdso.h"
-#include "util.h"
+#include "dso.h"
+#include <internal/lib.h>
+#include "map.h"
 #include "symbol.h"
 #include "machine.h"
 #include "thread.h"
 #include "linux/string.h"
+#include <linux/zalloc.h>
 #include "debug.h"
 
 /*
- * Include definition of find_vdso_map() also used in perf-read-vdso.c for
+ * Include definition of find_map() also used in perf-read-vdso.c for
  * building perf-read-vdso32 and perf-read-vdsox32.
  */
-#include "find-vdso-map.c"
+#include "find-map.c"
 
 #define VDSO__TEMP_FILE_NAME "/tmp/perf-vdso.so-XXXXXX"
 
@@ -76,7 +79,7 @@
 	if (vdso_file->found)
 		return vdso_file->temp_file_name;
 
-	if (vdso_file->error || find_vdso_map(&start, &end))
+	if (vdso_file->error || find_map(&start, &end, VDSO__MAP_NAME))
 		return NULL;
 
 	size = end - start;