[PATCH AUTOSEL for 4.14 141/161] selftests/ftrace: Add some missing glob checks

Sasha Levin
2018-04-09T00:26:18Z

From: "Steven Rostedt (VMware)" <rostedt@goodmis.org>

[ Upstream commit 97fe22adf33f06519bfdf7dad33bcd562e366c8f ]

Al Viro discovered a bug in the glob ftrace filtering code where "*a*b" is
treated the same as "a*b", and functions that would be selected by "*a*b"
but not "a*b" are not selected with "*a*b".

Add tests for patterns "*a*b" and "a*b*" to the glob selftest.

Link: http://lkml.kernel.org/r/20180127170748.GF13338@ZenIV.linux.org.uk

Cc: Shuah Khan <shuah@kernel.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc
index 589d52b211b7..27a54a17da65 100644
--- a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc
+++ b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc
@@ -29,6 +29,12 @@ ftrace_filter_check '*schedule*' '^.*schedule.*$'
# filter by *, end match
ftrace_filter_check 'schedule*' '^schedule.*$'

+# filter by *mid*end
+ftrace_filter_check '*aw*lock' '.*aw.*lock$'
+
+# filter by start*mid*
+ftrace_filter_check 'mutex*try*' '^mutex.*try.*'
+
# Advanced full-glob matching feature is recently supported.
# Skip the tests if we are sure the kernel does not support it.
if grep -q 'accepts: .* glob-matching-pattern' README ; then
--
2.15.1