perf tests: Add attr tests under builtin test command

The test attr suite is run only if it's run under perf source directory,
or tests are found in installed path.

Otherwise tests are omitted (notification is displayed) and finished as
successful.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1351634526-1516-25-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/tests/builtin-test.c

@@ -1454,6 +1454,10 @@ static struct test {
 		.desc = "Generate and check syscalls:sys_enter_open event fields",
 		.func = test__syscall_open_tp_fields,
 	},
+	{
+		.desc = "struct perf_event_attr setup",
+		.func = test_attr__run,
+	},
 	{
 		.func = NULL,
 	},