blob: e34c0bdef3ed3d4d69a17cf5337ae2836ab25cd9 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
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
|
