[PATCH V18 8/9] perf: test: Remove empty lines from branch filter test output

[Anshuman Khandual <anshuman.khandual@arm.com>]

From: James Clark <james.clark@arm.com>

In the perf script command, spaces are turned into newlines. But when
there is a double space this results in empty lines which fail the
following inverse grep test, so strip the empty lines.

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: linux-perf-users@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: James Clark <james.clark@arm.com>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
 tools/perf/tests/shell/test_brstack.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/tests/shell/test_brstack.sh b/tools/perf/tests/shell/test_brstack.sh
index 5ea64d0c4a6f..928790f35747 100755
--- a/tools/perf/tests/shell/test_brstack.sh
+++ b/tools/perf/tests/shell/test_brstack.sh
@@ -68,7 +68,7 @@ test_filter() {
 	echo "Testing branch stack filtering permutation ($test_filter_filter,$test_filter_expect)"
 
 	perf record -o $TMPDIR/perf.data --branch-filter $test_filter_filter,save_type,u -- ${TESTPROG} > /dev/null 2>&1
-	perf script -i $TMPDIR/perf.data --fields brstack | tr ' ' '\n' > $TMPDIR/perf.script
+	perf script -i $TMPDIR/perf.data --fields brstack | tr ' ' '\n' | sed '/^[[:space:]]*$/d' > $TMPDIR/perf.script
 
 	# fail if we find any branch type that doesn't match any of the expected ones
 	# also consider UNKNOWN branch types (-)
-- 
2.25.1