1 #!/bin/sh 1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0 2 # SPDX-License-Identifier: GPL-2.0
3 # description: Test ftrace direct functions ag 3 # description: Test ftrace direct functions against tracers
4 4
5 rmmod ftrace-direct ||: 5 rmmod ftrace-direct ||:
6 if ! modprobe ftrace-direct ; then 6 if ! modprobe ftrace-direct ; then
7 echo "No ftrace-direct sample module - pleas 7 echo "No ftrace-direct sample module - please make CONFIG_SAMPLE_FTRACE_DIRECT=m"
8 exit_unresolved; 8 exit_unresolved;
9 fi 9 fi
10 10
11 echo "Let the module run a little" 11 echo "Let the module run a little"
12 sleep 1 12 sleep 1
13 13
14 grep -q "my_direct_func: waking up" trace 14 grep -q "my_direct_func: waking up" trace
15 15
16 rmmod ftrace-direct 16 rmmod ftrace-direct
17 17
18 test_tracer() { 18 test_tracer() {
19 tracer=$1 19 tracer=$1
20 20
21 # tracer -> direct -> no direct > no t 21 # tracer -> direct -> no direct > no tracer
22 echo $tracer > current_tracer 22 echo $tracer > current_tracer
23 modprobe ftrace-direct 23 modprobe ftrace-direct
24 rmmod ftrace-direct 24 rmmod ftrace-direct
25 echo nop > current_tracer 25 echo nop > current_tracer
26 26
27 # tracer -> direct -> no tracer > no d 27 # tracer -> direct -> no tracer > no direct
28 echo $tracer > current_tracer 28 echo $tracer > current_tracer
29 modprobe ftrace-direct 29 modprobe ftrace-direct
30 echo nop > current_tracer 30 echo nop > current_tracer
31 rmmod ftrace-direct 31 rmmod ftrace-direct
32 32
33 # direct -> tracer -> no tracer > no d 33 # direct -> tracer -> no tracer > no direct
34 modprobe ftrace-direct 34 modprobe ftrace-direct
35 echo $tracer > current_tracer 35 echo $tracer > current_tracer
36 echo nop > current_tracer 36 echo nop > current_tracer
37 rmmod ftrace-direct 37 rmmod ftrace-direct
38 38
39 # direct -> tracer -> no direct > no n 39 # direct -> tracer -> no direct > no notracer
40 modprobe ftrace-direct 40 modprobe ftrace-direct
41 echo $tracer > current_tracer 41 echo $tracer > current_tracer
42 rmmod ftrace-direct 42 rmmod ftrace-direct
43 echo nop > current_tracer 43 echo nop > current_tracer
44 } 44 }
45 45
46 for t in `cat available_tracers`; do 46 for t in `cat available_tracers`; do
47 if [ "$t" != "nop" ]; then 47 if [ "$t" != "nop" ]; then
48 test_tracer $t 48 test_tracer $t
49 fi 49 fi
50 done 50 done
51 51
52 echo nop > current_tracer 52 echo nop > current_tracer
53 rmmod ftrace-direct ||: 53 rmmod ftrace-direct ||:
54 54
55 # Now do the same thing with another direct fu 55 # Now do the same thing with another direct function registered
56 echo "Running with another ftrace direct funct 56 echo "Running with another ftrace direct function"
57 57
58 rmmod ftrace-direct-too ||: 58 rmmod ftrace-direct-too ||:
59 modprobe ftrace-direct-too 59 modprobe ftrace-direct-too
60 60
61 for t in `cat available_tracers`; do 61 for t in `cat available_tracers`; do
62 if [ "$t" != "nop" ]; then 62 if [ "$t" != "nop" ]; then
63 test_tracer $t 63 test_tracer $t
64 fi 64 fi
65 done 65 done
66 66
67 echo nop > current_tracer 67 echo nop > current_tracer
68 rmmod ftrace-direct ||: 68 rmmod ftrace-direct ||:
69 rmmod ftrace-direct-too ||: 69 rmmod ftrace-direct-too ||:
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