linux-kernel - [PATCH v2 31/32] selftests/ftrace: Add output format testcase

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Date:   Fri, 17 Aug 2018 01:43:49 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     Shuah Khan <shuah@...nel.org>, Steven Rostedt <rostedt@...dmis.org>
Cc:     Ingo Molnar <mingo@...hat.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 31/32] selftests/ftrace: Add output format testcase

Add a testcase for tracing output format using trace_marker.
This tests raw, hex and bin format output.

Signed-off-by: Masami Hiramatsu <mhiramat@...nel.org>
---
 .../ftrace/test.d/00basic/print_format.tc          |   51 ++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 tools/testing/selftests/ftrace/test.d/00basic/print_format.tc

diff --git a/tools/testing/selftests/ftrace/test.d/00basic/print_format.tc b/tools/testing/selftests/ftrace/test.d/00basic/print_format.tc
new file mode 100644
index 000000000000..55feb542e83e
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/00basic/print_format.tc
@@ -0,0 +1,51 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL2.0
+# description: Change print trace format
+
+if [ ! -f trace_marker ]; then
+  echo "trace_marker is not supported, can not continue testing"
+  exit_unresolved
+fi
+
+do_reset() {
+  if [ `cat options/bin` -eq 1 ]; then
+    grep -v "^#" trace | od -h | cut -f 2- -d " " | xargs echo
+  fi
+  echo 0 > options/hex
+  echo 0 > options/raw
+  echo 0 > options/bin
+  cat trace
+  exit 1
+}
+
+echo > trace
+echo "abcdefgh" > trace_marker
+echo 0 > tracing_on
+
+: "Get the pid and cpu#"
+IDS=`grep -v "^#" trace | sed -e 's/[[:space:]]*.*-\([[:digit:]]*\)[[:space:]]*\[\([[:digit:]]*\)\].*/\1 \2/'`
+
+read_pid_cpu() {
+  _PID=$1
+  _CPU=`printf "%d" $2`
+}
+
+read_pid_cpu $IDS
+
+: "Test raw output format"
+echo 1 > options/raw
+grep -v "^#" trace | grep "^$_PID $_CPU" || do_reset
+echo 0 > options/raw
+
+: "Test hex output format"
+echo 1 > options/hex
+PAT=`printf "%08x %08x" $_PID $_CPU`
+grep -v "^#" trace | grep "^$PAT" || do_reset
+echo 0 > options/hex
+
+: "Test bin output format"
+echo 1 > options/bin
+PAT=`printf "%04x [[:xdigit:]]* [[:xdigit:]]*%02x" $_PID $_CPU`
+# Make a stream of hexdump
+grep -v "^#" trace | od -h | cut -f 2- -d " " | xargs echo | grep "$PAT" || do_reset
+echo 0 > options/bin