1 #!/bin/sh 1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0 2 # SPDX-License-Identifier: GPL-2.0
3 # description: event trigger - test histogram 3 # description: event trigger - test histogram expression parsing
4 # requires: set_event events/sched/sched_proce 4 # requires: set_event events/sched/sched_process_fork/trigger events/sched/sched_process_fork/hist error_log "<var1>=<field|var_ref|numeric_literal>":README
5 5
6 6
7 fail() { #msg 7 fail() { #msg
8 echo $1 8 echo $1
9 exit_fail 9 exit_fail
10 } 10 }
11 11
12 test_hist_expr() { # test_name expression expe 12 test_hist_expr() { # test_name expression expected_val
13 trigger="events/sched/sched_process_fork/t 13 trigger="events/sched/sched_process_fork/trigger"
14 14
15 reset_trigger_file $trigger 15 reset_trigger_file $trigger
16 16
17 echo "Test hist trigger expressions - $1" 17 echo "Test hist trigger expressions - $1"
18 18
19 echo "hist:keys=common_pid:x=$2" > $trigge 19 echo "hist:keys=common_pid:x=$2" > $trigger
20 20
21 for i in `seq 1 10` ; do ( echo "forked" > 21 for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
22 22
23 actual=`grep -o 'x=[[:digit:]]*' $trigger 23 actual=`grep -o 'x=[[:digit:]]*' $trigger | awk -F= '{ print $2 }'`
24 24
25 if [ $actual != $3 ]; then 25 if [ $actual != $3 ]; then
26 fail "Failed hist trigger expression e 26 fail "Failed hist trigger expression evaluation: Expression: $2 Expected: $3, Actual: $actual"
27 fi 27 fi
28 28
29 reset_trigger_file $trigger 29 reset_trigger_file $trigger
30 } 30 }
31 31
32 check_error() { # test_name command-with-error 32 check_error() { # test_name command-with-error-pos-by-^
33 trigger="events/sched/sched_process_fork/t 33 trigger="events/sched/sched_process_fork/trigger"
34 34
35 echo "Test hist trigger expressions - $1" 35 echo "Test hist trigger expressions - $1"
36 ftrace_errlog_check 'hist:sched:sched_proc 36 ftrace_errlog_check 'hist:sched:sched_process_fork' "$2" $trigger
37 } 37 }
38 38
39 test_hist_expr "Variable assignment" "123" "12 39 test_hist_expr "Variable assignment" "123" "123"
40 40
41 test_hist_expr "Subtraction not associative" " 41 test_hist_expr "Subtraction not associative" "16-8-4-2" "2"
42 42
43 test_hist_expr "Division not associative" "64/ 43 test_hist_expr "Division not associative" "64/8/4/2" "1"
44 44
45 test_hist_expr "Same precedence operators (+,- 45 test_hist_expr "Same precedence operators (+,-) evaluated left to right" "16-8+4+2" "14"
46 46
47 test_hist_expr "Same precedence operators (*,/ 47 test_hist_expr "Same precedence operators (*,/) evaluated left to right" "4*3/2*2" "12"
48 48
49 test_hist_expr "Multiplication evaluated befor 49 test_hist_expr "Multiplication evaluated before addition/subtraction" "4+3*2-2" "8"
50 50
51 test_hist_expr "Division evaluated before addi 51 test_hist_expr "Division evaluated before addition/subtraction" "4+6/2-2" "5"
52 52
53 # err pos for "too many subexpressions" is dep 53 # err pos for "too many subexpressions" is dependent on where
54 # the last subexpression was detected. This ca 54 # the last subexpression was detected. This can vary depending
55 # on how the expression tree was generated. 55 # on how the expression tree was generated.
56 check_error "Too many subexpressions" 'hist:ke 56 check_error "Too many subexpressions" 'hist:keys=common_pid:x=32+^10*3/20-4'
57 check_error "Too many subexpressions" 'hist:ke 57 check_error "Too many subexpressions" 'hist:keys=common_pid:x=^1+2+3+4+5'
58 58
59 check_error "Unary minus not supported in sube 59 check_error "Unary minus not supported in subexpression" 'hist:keys=common_pid:x=-(^1)+2'
60 60
61 check_error "Division by zero" 'hist:keys=comm 61 check_error "Division by zero" 'hist:keys=common_pid:x=3/^0'
62 62
63 exit 0 63 exit 0
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