lkml.org 
[lkml]   [2023]   [Aug]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/2] selftests/ftrace: Add a basic testcase for snapshot
Date
This testcase is constrived to reproduce a problem that the cpu buffers
become unavailable which is due to 'record_disabled' of array_buffer and
max_buffer being messed up.

Local test result after bugfix:
# ./ftracetest test.d/00basic/snapshot1.tc
=== Ftrace unit tests ===
[1] Snapshot and tracing_cpumask [PASS]
[2] (instance) Snapshot and tracing_cpumask [PASS]

# of passed: 2
# of failed: 0
# of unresolved: 0
# of untested: 0
# of unsupported: 0
# of xfailed: 0
# of undefined(test bug): 0

Signed-off-by: Zheng Yejian <zhengyejian1@huawei.com>
---
.../ftrace/test.d/00basic/snapshot1.tc | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
create mode 100644 tools/testing/selftests/ftrace/test.d/00basic/snapshot1.tc

diff --git a/tools/testing/selftests/ftrace/test.d/00basic/snapshot1.tc b/tools/testing/selftests/ftrace/test.d/00basic/snapshot1.tc
new file mode 100644
index 000000000000..0d9b84b3adc3
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/00basic/snapshot1.tc
@@ -0,0 +1,17 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: Snapshot and tracing_cpumask
+# requires: trace_marker tracing_cpumask snapshot
+# flags: instance
+
+# This testcase is constrived to reproduce a problem that the cpu buffers
+# become unavailable which is due to 'record_disabled' of array_buffer and
+# max_buffer being messed up.
+
+ORIG_CPUMASK=`cat tracing_cpumask`
+echo 0 > tracing_cpumask
+echo 1 > snapshot
+echo ${ORIG_CPUMASK} > tracing_cpumask
+echo "test input 1" > trace_marker
+grep -q "test input 1" trace
+exit 0
--
2.25.1
\
 
 \ /
  Last update: 2023-08-04 14:47    [W:0.102 / U:0.308 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site