diff mbox series

[v11,8/8] selftests/ftrace: Add funcgraph-retval test case

Message ID 9fedbd25e63f012cade5dad13be21225fec2fb5d.1680954589.git.pengdonglin@sangfor.com.cn (mailing list archive)
State Accepted
Commit 6009177fd9ec7b5ca9b93ecdbadd4bc7e9c48141
Headers show
Series function_graph: Support recording and printing the return value of function | expand

Commit Message

pengdonglin April 8, 2023, 12:42 p.m. UTC 
Add a test case for the funcgraph-retval and funcgraph-retval-hex
trace options.

Signed-off-by: Donglin Peng <pengdonglin@sangfor.com.cn>
---
v11:
 - Fix selftest issues

v10:
 - Fix issues in selftest

v8:
 - Fix issues in selftest
---
 .../ftrace/test.d/ftrace/fgraph-retval.tc     | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 tools/testing/selftests/ftrace/test.d/ftrace/fgraph-retval.tc

Comments

Masami Hiramatsu (Google) April 25, 2023, 3:55 a.m. UTC | #1 
On Sat,  8 Apr 2023 05:42:22 -0700
Donglin Peng <pengdonglin@sangfor.com.cn> wrote:

> Add a test case for the funcgraph-retval and funcgraph-retval-hex
> trace options.
> 

This looks good to me.

Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>

Thank you!

> Signed-off-by: Donglin Peng <pengdonglin@sangfor.com.cn>
> ---
> v11:
>  - Fix selftest issues
> 
> v10:
>  - Fix issues in selftest
> 
> v8:
>  - Fix issues in selftest
> ---
>  .../ftrace/test.d/ftrace/fgraph-retval.tc     | 44 +++++++++++++++++++
>  1 file changed, 44 insertions(+)
>  create mode 100644 tools/testing/selftests/ftrace/test.d/ftrace/fgraph-retval.tc
> 
> diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-retval.tc b/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-retval.tc
> new file mode 100644
> index 000000000000..e34c0bdef3ed
> --- /dev/null
> +++ b/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-retval.tc
> @@ -0,0 +1,44 @@
> +#!/bin/sh
> +# SPDX-License-Identifier: GPL-2.0
> +# description: ftrace - function graph print function return value
> +# requires: options/funcgraph-retval options/funcgraph-retval-hex function_graph:tracer
> +
> +# Make sure that funcgraph-retval works
> +
> +fail() { # msg
> +    echo $1
> +    exit_fail
> +}
> +
> +disable_tracing
> +clear_trace
> +
> +# get self PID, can not use $$, because it is PPID
> +read PID _ < /proc/self/stat
> +
> +[ -f set_ftrace_filter ] && echo proc_reg_write > set_ftrace_filter
> +[ -f set_ftrace_pid ] && echo ${PID} > set_ftrace_pid
> +echo function_graph > current_tracer
> +echo 1 > options/funcgraph-retval
> +
> +set +e
> +enable_tracing
> +echo > /proc/interrupts
> +disable_tracing
> +set -e
> +
> +: "Test printing the error code in signed decimal format"
> +echo 0 > options/funcgraph-retval-hex
> +count=`cat trace | grep 'proc_reg_write' | grep '= -5' | wc -l`
> +if [ $count -eq 0 ]; then
> +    fail "Return value can not be printed in signed decimal format"
> +fi
> +
> +: "Test printing the error code in hexadecimal format"
> +echo 1 > options/funcgraph-retval-hex
> +count=`cat trace | grep 'proc_reg_write' | grep 'fffffffb' | wc -l`
> +if [ $count -eq 0 ]; then
> +    fail "Return value can not be printed in hexadecimal format"
> +fi
> +
> +exit 0
> -- 
> 2.25.1
>
diff mbox series

Patch

diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-retval.tc b/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-retval.tc
new file mode 100644
index 000000000000..e34c0bdef3ed
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-retval.tc
@@ -0,0 +1,44 @@ 
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: ftrace - function graph print function return value
+# requires: options/funcgraph-retval options/funcgraph-retval-hex function_graph:tracer
+
+# Make sure that funcgraph-retval works
+
+fail() { # msg
+    echo $1
+    exit_fail
+}
+
+disable_tracing
+clear_trace
+
+# get self PID, can not use $$, because it is PPID
+read PID _ < /proc/self/stat
+
+[ -f set_ftrace_filter ] && echo proc_reg_write > set_ftrace_filter
+[ -f set_ftrace_pid ] && echo ${PID} > set_ftrace_pid
+echo function_graph > current_tracer
+echo 1 > options/funcgraph-retval
+
+set +e
+enable_tracing
+echo > /proc/interrupts
+disable_tracing
+set -e
+
+: "Test printing the error code in signed decimal format"
+echo 0 > options/funcgraph-retval-hex
+count=`cat trace | grep 'proc_reg_write' | grep '= -5' | wc -l`
+if [ $count -eq 0 ]; then
+    fail "Return value can not be printed in signed decimal format"
+fi
+
+: "Test printing the error code in hexadecimal format"
+echo 1 > options/funcgraph-retval-hex
+count=`cat trace | grep 'proc_reg_write' | grep 'fffffffb' | wc -l`
+if [ $count -eq 0 ]; then
+    fail "Return value can not be printed in hexadecimal format"
+fi
+
+exit 0