[PATCH] perf tests shell: Skip trace+probe_vfs_getname.sh if built without trace support

[Tommi Rantala <tt.rantala@gmail.com>]

From: Tommi Rantala <tommi.t.rantala@nokia.com>

If perf was built without trace support, trace+probe_vfs_getname.sh
fails:

  # perf trace -h
  perf: 'trace' is not a perf-command. See 'perf --help'

  # perf test 64
  64: Check open filename arg using perf trace + vfs_getname: FAILED!

Check trace support, so that we'll skip the test:

  # perf test 64
  64: Check open filename arg using perf trace + vfs_getname: Skip

Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
---
 tools/perf/tests/shell/lib/probe.sh               | 5 +++++
 tools/perf/tests/shell/trace+probe_vfs_getname.sh | 1 +
 2 files changed, 6 insertions(+)

diff --git a/tools/perf/tests/shell/lib/probe.sh b/tools/perf/tests/shell/lib/probe.sh
index 6293cc660947..e37787be672b 100644
--- a/tools/perf/tests/shell/lib/probe.sh
+++ b/tools/perf/tests/shell/lib/probe.sh
@@ -4,3 +4,8 @@ skip_if_no_perf_probe() {
 	perf probe 2>&1 | grep -q 'is not a perf-command' && return 2
 	return 0
 }
+
+skip_if_no_perf_trace() {
+	perf trace -h 2>&1 | grep -q -e 'is not a perf-command' -e 'trace command not available' && return 2
+	return 0
+}
diff --git a/tools/perf/tests/shell/trace+probe_vfs_getname.sh b/tools/perf/tests/shell/trace+probe_vfs_getname.sh
index 50109f27ca07..147efeb6b195 100755
--- a/tools/perf/tests/shell/trace+probe_vfs_getname.sh
+++ b/tools/perf/tests/shell/trace+probe_vfs_getname.sh
@@ -12,6 +12,7 @@
 . $(dirname $0)/lib/probe.sh
 
 skip_if_no_perf_probe || exit 2
+skip_if_no_perf_trace || exit 2
 
 . $(dirname $0)/lib/probe_vfs_getname.sh
 
-- 
2.20.1