[lttng-dev] [PATCH lttng-tools] Fix: tests: skip UST perf tests if not root

[Mathieu Desnoyers]

Some distributions like Debian (e.g. Debian kernel 4.1.0-2-amd64) have
some grsecurity options enabled, such as CONFIG_GRKERNSEC_PERF_HARDEN.

Unfortunately, this option makes it impossible to use the SW page-fault
perf event as a normal user. It only leaves some HW events. However, we
can only use SW events within virtual machines.

Therefore, only run this test as root for now until we find a better
approach.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers at efficios.com>
---
 tests/regression/ust/test_event_perf | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/tests/regression/ust/test_event_perf b/tests/regression/ust/test_event_perf
index 7fb37ed..7dc2168 100755
--- a/tests/regression/ust/test_event_perf
+++ b/tests/regression/ust/test_event_perf
@@ -90,8 +90,17 @@ plan_tests $NUM_TESTS
 
 print_test_banner "$TEST_DESC"
 
-start_lttng_sessiond
+if [ "$(id -u)" == "0" ]; then
+        isroot=1
+else
+        isroot=0
+fi
+
+skip $isroot "Root access is needed. Skipping UST perf tests." ${NUM_TESTS} ||
+{
+	start_lttng_sessiond
 
-test_event_basic
+	test_event_basic
 
-stop_lttng_sessiond
+	stop_lttng_sessiond
+}
-- 
2.1.4