linux-kernel - [PATCH AUTOSEL for 4.15 167/189] selftests/ftrace: Add some missing glob checks

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Date:   Mon, 9 Apr 2018 00:19:01 +0000
From:   Sasha Levin <Alexander.Levin@...rosoft.com>
To:     "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     "Steven Rostedt (VMware)" <rostedt@...dmis.org>,
        Shuah Khan <shuah@...nel.org>,
        Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL for 4.15 167/189] selftests/ftrace: Add some missing
 glob checks

From: "Steven Rostedt (VMware)" <rostedt@...dmis.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@...nel.org>
Acked-by: Masami Hiramatsu <mhiramat@...nel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.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