1*4e9f63c9SKalesh Singh#!/bin/sh 2*4e9f63c9SKalesh Singh# SPDX-License-Identifier: GPL-2.0 3*4e9f63c9SKalesh Singh# description: event trigger - test histogram expression parsing 4*4e9f63c9SKalesh Singh# 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*4e9f63c9SKalesh Singh 6*4e9f63c9SKalesh Singh 7*4e9f63c9SKalesh Singhfail() { #msg 8*4e9f63c9SKalesh Singh echo $1 9*4e9f63c9SKalesh Singh exit_fail 10*4e9f63c9SKalesh Singh} 11*4e9f63c9SKalesh Singh 12*4e9f63c9SKalesh Singhtest_hist_expr() { # test_name expression expected_val 13*4e9f63c9SKalesh Singh trigger="events/sched/sched_process_fork/trigger" 14*4e9f63c9SKalesh Singh 15*4e9f63c9SKalesh Singh reset_trigger_file $trigger 16*4e9f63c9SKalesh Singh 17*4e9f63c9SKalesh Singh echo "Test hist trigger expressions - $1" 18*4e9f63c9SKalesh Singh 19*4e9f63c9SKalesh Singh echo "hist:keys=common_pid:x=$2" > $trigger 20*4e9f63c9SKalesh Singh 21*4e9f63c9SKalesh Singh for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done 22*4e9f63c9SKalesh Singh 23*4e9f63c9SKalesh Singh actual=`grep -o 'x=[[:digit:]]*' $trigger | awk -F= '{ print $2 }'` 24*4e9f63c9SKalesh Singh 25*4e9f63c9SKalesh Singh if [ $actual != $3 ]; then 26*4e9f63c9SKalesh Singh fail "Failed hist trigger expression evaluation: Expression: $2 Expected: $3, Actual: $actual" 27*4e9f63c9SKalesh Singh fi 28*4e9f63c9SKalesh Singh 29*4e9f63c9SKalesh Singh reset_trigger_file $trigger 30*4e9f63c9SKalesh Singh} 31*4e9f63c9SKalesh Singh 32*4e9f63c9SKalesh Singhcheck_error() { # test_name command-with-error-pos-by-^ 33*4e9f63c9SKalesh Singh trigger="events/sched/sched_process_fork/trigger" 34*4e9f63c9SKalesh Singh 35*4e9f63c9SKalesh Singh echo "Test hist trigger expressions - $1" 36*4e9f63c9SKalesh Singh ftrace_errlog_check 'hist:sched:sched_process_fork' "$2" $trigger 37*4e9f63c9SKalesh Singh} 38*4e9f63c9SKalesh Singh 39*4e9f63c9SKalesh Singhtest_hist_expr "Variable assignment" "123" "123" 40*4e9f63c9SKalesh Singh 41*4e9f63c9SKalesh Singhtest_hist_expr "Subtraction not associative" "16-8-4-2" "2" 42*4e9f63c9SKalesh Singh 43*4e9f63c9SKalesh Singhtest_hist_expr "Division not associative" "64/8/4/2" "1" 44*4e9f63c9SKalesh Singh 45*4e9f63c9SKalesh Singhtest_hist_expr "Same precedence operators (+,-) evaluated left to right" "16-8+4+2" "14" 46*4e9f63c9SKalesh Singh 47*4e9f63c9SKalesh Singhtest_hist_expr "Same precedence operators (*,/) evaluated left to right" "4*3/2*2" "12" 48*4e9f63c9SKalesh Singh 49*4e9f63c9SKalesh Singhtest_hist_expr "Multiplication evaluated before addition/subtraction" "4+3*2-2" "8" 50*4e9f63c9SKalesh Singh 51*4e9f63c9SKalesh Singhtest_hist_expr "Division evaluated before addition/subtraction" "4+6/2-2" "5" 52*4e9f63c9SKalesh Singh 53*4e9f63c9SKalesh Singh# err pos for "too many subexpressions" is dependent on where 54*4e9f63c9SKalesh Singh# the last subexpression was detected. This can vary depending 55*4e9f63c9SKalesh Singh# on how the expression tree was generated. 56*4e9f63c9SKalesh Singhcheck_error "Too many subexpressions" 'hist:keys=common_pid:x=32+^10*3/20-4' 57*4e9f63c9SKalesh Singhcheck_error "Too many subexpressions" 'hist:keys=common_pid:x=^1+2+3+4+5' 58*4e9f63c9SKalesh Singh 59*4e9f63c9SKalesh Singhcheck_error "Unary minus not supported in subexpression" 'hist:keys=common_pid:x=-(^1)+2' 60*4e9f63c9SKalesh Singh 61*4e9f63c9SKalesh Singhcheck_error "Division by zero" 'hist:keys=common_pid:x=3/^0' 62*4e9f63c9SKalesh Singh 63*4e9f63c9SKalesh Singhexit 0 64