1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3source tests/engine.sh 4test_begin 5 6set_timeout 2m 7timerlat_sample_event='/sys/kernel/tracing/events/osnoise/timerlat_sample' 8 9if ldd $RTLA | grep libbpf >/dev/null && [ -d "$timerlat_sample_event" ] 10then 11 # rtla build with BPF and system supports BPF mode 12 no_bpf_options='0 1' 13else 14 no_bpf_options='1' 15fi 16 17# Do every test with and without BPF 18for option in $no_bpf_options 19do 20export RTLA_NO_BPF=$option 21 22# Basic tests 23check "verify help page" \ 24 "timerlat --help" 129 "timerlat version" 25check_top_hist "verify help page" \ 26 "timerlat TOOL --help" 129 "rtla timerlat" 27check_top_hist "verify -s/--stack" \ 28 "timerlat TOOL -s 3 -T 10 -t" 2 "Blocking thread stack trace" 29check_top_hist "test in nanoseconds" \ 30 "timerlat TOOL -i 2 -c 0 -n -d 10s" 2 "ns" 31check_top_hist "set the automatic trace mode" \ 32 "timerlat TOOL -a 5" 2 "analyzing it" 33check_top_hist "dump tasks" \ 34 "timerlat TOOL -a 5 --dump-tasks" 2 "Printing CPU tasks" 35check "verify --aa-only stop on threshold" \ 36 "timerlat top --aa-only 5" 2 "analyzing it" "Timer Latency" 37check "verify --aa-only max latency" \ 38 "timerlat top --aa-only 2000000 -d 1s" 0 "^ Max latency was" "Timer Latency" 39check_top_hist "disable auto-analysis" \ 40 "timerlat TOOL -s 3 -T 10 -t --no-aa" 2 "" "analyzing it" 41 42# Thread tests 43check_top_hist "verify -P/--priority" \ 44 "timerlat TOOL -P F:1 -c 0 -d 10s -T 1 --on-threshold shell,command=\"$testdir/scripts/check-priority.sh SCHED_FIFO 1\"" \ 45 2 "Priorities are set correctly" 46check_top_hist "verify -C/--cgroup" \ 47 "timerlat TOOL -k -C -c 0 -d 10s -T 1 --on-threshold shell,command=\"$testdir/scripts/check-cgroup-match.sh\"" \ 48 2 "cgroup matches for all workload PIDs" 49check_top_q_hist "verify -c/--cpus" \ 50 "timerlat TOOL -c 0 -d 10s -T 1 --on-threshold shell,command=$testdir/scripts/check-cpus.sh" 2 "^Affinity of threads: 0$" 51check_top_q_hist "verify -H/--house-keeping" \ 52 "timerlat TOOL -H 0 -d 10s -T 1 --on-threshold shell,command=$testdir/scripts/check-housekeeping-cpus.sh" 2 "^Affinity of threads: 0$" 53check_top_q_hist "verify -k/--kernel-threads" \ 54 "timerlat TOOL -k -c 0 -d 10s -T 1 --on-threshold shell,command=$testdir/scripts/check-user-kernel-threads.sh" 2 "1 kernel threads, 0 user threads" 55check_top_q_hist "verify -u/--user-threads" \ 56 "timerlat TOOL -u -c 0 -d 10s -T 1 --on-threshold shell,command=$testdir/scripts/check-user-kernel-threads.sh" 2 "0 kernel threads, 1 user threads" 57 58# Histogram tests 59check "hist with -b/--bucket-size" \ 60 "timerlat hist -b 1 -d 1s" 61check "hist with -E/--entries" \ 62 "timerlat hist -E 10 -d 1s" 63check "hist with -E/--entries out of range" \ 64 "timerlat hist -E 1 -d 1s" 1 "^Entries must be > 10 and < 10000000$" 65check "hist with --no-header" \ 66 "timerlat hist --no-header -d 1s" 0 "" "RTLA timerlat histogram" 67check "hist with --with-zeros" \ 68 "timerlat hist --with-zeros -b 100000 -E 21 -d 1s" 0 '^2000000\s+0\s+' 69check "hist with --no-index" \ 70 "timerlat hist --no-index --with-zeros -d 1s" 0 "" "^count:" 71check "hist with --no-summary" \ 72 "timerlat hist --no-summary -d 1s" 0 "" "^ALL:" 73check "hist with --no-irq" \ 74 "timerlat hist --no-irq -d 1s" 0 "" "IRQ-" 75check "hist with --no-thread" \ 76 "timerlat hist --no-thread -d 1s" 0 "" "Thr-" 77 78# Actions tests 79check_top_q_hist "trace output through -t" \ 80 "timerlat TOOL -T 2 -t" 2 "^ Saving trace to timerlat_trace.txt$" 81check_top_q_hist "trace output through -t with custom filename" \ 82 "timerlat TOOL -T 2 -t custom_filename.txt" 2 "^ Saving trace to custom_filename.txt$" 83check_top_q_hist "trace output through --on-threshold trace" \ 84 "timerlat TOOL -T 2 --on-threshold trace" 2 "^ Saving trace to timerlat_trace.txt$" 85check_top_q_hist "trace output through --on-threshold trace with custom filename" \ 86 "timerlat TOOL -T 2 --on-threshold trace,file=custom_filename.txt" 2 "^ Saving trace to custom_filename.txt$" 87check_top_q_hist "exec command" \ 88 "timerlat TOOL -T 2 --on-threshold shell,command='echo TestOutput'" 2 "^TestOutput$" 89check_top_q_hist "multiple actions" \ 90 "timerlat TOOL -T 2 --on-threshold shell,command='echo -n 1' --on-threshold shell,command='echo 2'" 2 "^12$" 91check "hist stop at failed action" \ 92 "timerlat hist -T 2 --on-threshold shell,command='echo -n 1; false' --on-threshold shell,command='echo -n 2'" 2 "^1# RTLA timerlat histogram$" 93check "top stop at failed action" \ 94 "timerlat top -T 2 --on-threshold shell,command='echo -n abc; false' --on-threshold shell,command='echo -n defgh'" 2 "^abc" "defgh" 95check_top_q_hist "with continue" \ 96 "timerlat TOOL -T 2 -d 5s --on-threshold shell,command='echo TestOutput' --on-threshold continue" 0 "^TestOutput$" 97check_top_q_hist "with conditional continue" \ 98 "timerlat TOOL -T 2 --on-threshold shell,command='if [ -f a ]; then echo 2; exit 1; else echo -n 1; touch a; fi' --on-threshold continue" 2 "^12$" "^2$" 99check_top_hist "with trace output at end" \ 100 "timerlat TOOL -d 1s --on-end trace" 0 "^ Saving trace to timerlat_trace.txt$" 101 102# BPF action program tests 103if [ "$option" -eq 0 ] 104then 105 # Test BPF action program properly in BPF mode 106 [ -z "$BPFTOOL" ] && BPFTOOL=bpftool 107 check_top_q_hist "with BPF action program (BPF mode)" \ 108 "timerlat TOOL -T 2 --bpf-action $testdir/bpf/bpf_action_map.o --on-threshold shell,command='$BPFTOOL map dump name rtla_test_map'" \ 109 2 '"value": 42' 110else 111 # Test BPF action program failure in non-BPF mode 112 check_top_q_hist "with BPF action program (non-BPF mode)" \ 113 "timerlat TOOL -T 2 --bpf-action $testdir/bpf/bpf_action_map.o" \ 114 1 "BPF actions are not supported in tracefs-only mode" 115fi 116done 117 118test_end 119