#!/bin/bash# SPDX-License-Identifier: GPL-2.0source tests/engine.shtest_begin set_timeout 2mtimerlat_sample_event='/sys/kernel/tracing/events/osnoise/timerlat_sample' if ldd $RTLA | grep libbpf >/dev/null && [ -d "$timerlat_sample_event" ]then	# rtla build with BPF and system supports BPF mode	no_bpf_options='0 1'else	no_bpf_options='1'fi # Do every test with and without BPFfor option in $no_bpf_optionsdoexport RTLA_NO_BPF=$option # Basic testscheck "verify help page" \	"timerlat --help" 129 "timerlat version"check_top_hist "verify help page" \	"timerlat TOOL --help" 129 "rtla timerlat"check_top_hist "verify -s/--stack" \	"timerlat TOOL -s 3 -T 10 -t" 2 "Blocking thread stack trace"check_top_hist "test in nanoseconds" \	"timerlat TOOL -i 2 -c 0 -n -d 10s" 2 "ns"check_top_hist "set the automatic trace mode" \	"timerlat TOOL -a 5" 2 "analyzing it"check_top_hist "dump tasks" \	"timerlat TOOL -a 5 --dump-tasks" 2 "Printing CPU tasks"check "verify --aa-only stop on threshold" \	"timerlat top --aa-only 5" 2 "analyzing it" "Timer Latency"check "verify --aa-only max latency" \	"timerlat top --aa-only 2000000 -d 1s" 0 "^  Max latency was" "Timer Latency"check_top_hist "disable auto-analysis" \	"timerlat TOOL -s 3 -T 10 -t --no-aa" 2 "" "analyzing it" # Thread testscheck_top_hist "verify -P/--priority" \	"timerlat TOOL -P F:1 -c 0 -d 10s -T 1 --on-threshold shell,command=\"$testdir/scripts/check-priority.sh SCHED_FIFO 1\"" \	2 "Priorities are set correctly"check_top_hist "verify -C/--cgroup" \	"timerlat TOOL -k -C -c 0 -d 10s -T 1 --on-threshold shell,command=\"$testdir/scripts/check-cgroup-match.sh\"" \	2 "cgroup matches for all workload PIDs"check_top_q_hist "verify -c/--cpus" \	"timerlat TOOL -c 0 -d 10s -T 1 --on-threshold shell,command=$testdir/scripts/check-cpus.sh" 2 "^Affinity of threads: 0$"check_top_q_hist "verify -H/--house-keeping" \	"timerlat TOOL -H 0 -d 10s -T 1 --on-threshold shell,command=$testdir/scripts/check-housekeeping-cpus.sh" 2 "^Affinity of threads: 0$"check_top_q_hist "verify -k/--kernel-threads" \	"timerlat TOOL -k -c 0 -d 10s -T 1 --on-threshold shell,command=$testdir/scripts/check-user-kernel-threads.sh" 2 "1 kernel threads, 0 user threads"check_top_q_hist "verify -u/--user-threads" \	"timerlat TOOL -u -c 0 -d 10s -T 1 --on-threshold shell,command=$testdir/scripts/check-user-kernel-threads.sh" 2 "0 kernel threads, 1 user threads" # Tracer option tests - verify that rtla correctly sets tracefs options# Default tests: poison tracefs with wrong values, verify rtla resets to defaultscheck_with_osnoise_options "apply default timerlat_period_us" \	"timerlat top -q -T 1 --on-threshold shell,command=\"$testdir/scripts/check-tracefs-value.sh osnoise/timerlat_period_us\"" \	2 "^osnoise/timerlat_period_us=1000$" osnoise/timerlat_period_us=999999check_with_osnoise_options "apply default print_stack" \	"timerlat top -q -T 1 --on-threshold shell,command=\"$testdir/scripts/check-tracefs-value.sh osnoise/print_stack\"" \	2 "^osnoise/print_stack=0$" osnoise/print_stack=999999check_with_osnoise_options "apply default stop_tracing_us" \	"timerlat top -q -T 1 --on-threshold shell,command=\"$testdir/scripts/check-tracefs-value.sh osnoise/stop_tracing_us\"" \	2 "^osnoise/stop_tracing_us=0$" osnoise/stop_tracing_us=999999check_with_osnoise_options "apply default stop_tracing_total_us" \	"timerlat top -q -i 1 --on-threshold shell,command=\"$testdir/scripts/check-tracefs-value.sh osnoise/stop_tracing_total_us\"" \	2 "^osnoise/stop_tracing_total_us=0$" osnoise/stop_tracing_total_us=999999 # Non-default tracer option tests: verify CLI options correctly set tracefs valuescheck_top_q_hist "verify -p sets timerlat_period_us" \	"timerlat TOOL -p 2000 -T 1 --on-threshold shell,command=\"$testdir/scripts/check-tracefs-value.sh osnoise/timerlat_period_us\"" \	2 "^osnoise/timerlat_period_us=2000$"check_top_q_hist "verify -s sets print_stack" \	"timerlat TOOL -s 5 -T 1 --on-threshold shell,command=\"$testdir/scripts/check-tracefs-value.sh osnoise/print_stack\"" \	2 "^osnoise/print_stack=5$"check_top_q_hist "verify -i sets stop_tracing_us" \	"timerlat TOOL -i 2 --on-threshold shell,command=\"$testdir/scripts/check-tracefs-value.sh osnoise/stop_tracing_us\"" \	2 "^osnoise/stop_tracing_us=2$"check_top_q_hist "verify -T sets stop_tracing_total_us" \	"timerlat TOOL -T 2 --on-threshold shell,command=\"$testdir/scripts/check-tracefs-value.sh osnoise/stop_tracing_total_us\"" \	2 "^osnoise/stop_tracing_total_us=2$"check_with_osnoise_options "apply default TIMERLAT_ALIGN" \	"timerlat top -q -T 1 --on-threshold shell,command=\"$testdir/scripts/check-osnoise-option.sh TIMERLAT_ALIGN\"" \	2 "^TIMERLAT_ALIGN=disabled$" osnoise/options=TIMERLAT_ALIGNcheck_top_q_hist "verify -A sets TIMERLAT_ALIGN" \	"timerlat TOOL -A 100 -T 1 --on-threshold shell,command=\"$testdir/scripts/check-osnoise-option.sh TIMERLAT_ALIGN\"" \	2 "^TIMERLAT_ALIGN=enabled$"check_top_q_hist "verify -A sets timerlat_align_us" \	"timerlat TOOL -A 100 -T 1 --on-threshold shell,command=\"$testdir/scripts/check-tracefs-value.sh osnoise/timerlat_align_us\"" \	2 "^osnoise/timerlat_align_us=100$" # Histogram testscheck "hist with -b/--bucket-size" \	"timerlat hist -b 1 -d 1s"check "hist with -E/--entries" \	"timerlat hist -E 10 -d 1s"check "hist with -E/--entries out of range" \	"timerlat hist -E 1 -d 1s" 129 "out of range \[10, 9999999\]"check "hist with --no-header" \	"timerlat hist --no-header -d 1s" 0 "" "RTLA timerlat histogram"check "hist with --with-zeros" \	"timerlat hist --with-zeros -b 100000 -E 21 -d 1s" 0 '^2000000\s+0\s+'check "hist with --no-index" \	"timerlat hist --no-index --with-zeros -d 1s" 0 "" "^count:"check "hist with --no-summary" \	"timerlat hist --no-summary -d 1s" 0 "" "^ALL:"check "hist with --no-irq" \	"timerlat hist --no-irq -d 1s" 0 "" "IRQ-"check "hist with --no-thread" \	"timerlat hist --no-thread -d 1s" 0 "" "Thr-" # Actions testscheck_top_q_hist "trace output through -t" \	"timerlat TOOL -T 2 -t" 2 "^  Saving trace to timerlat_trace.txt$"check_top_q_hist "trace output through -t with custom filename" \	"timerlat TOOL -T 2 -t custom_filename.txt" 2 "^  Saving trace to custom_filename.txt$"check_top_q_hist "trace output through --on-threshold trace" \	"timerlat TOOL -T 2 --on-threshold trace" 2 "^  Saving trace to timerlat_trace.txt$"check_top_q_hist "trace output through --on-threshold trace with custom filename" \	"timerlat TOOL -T 2 --on-threshold trace,file=custom_filename.txt" 2 "^  Saving trace to custom_filename.txt$"check_top_q_hist "exec command" \	"timerlat TOOL -T 2 --on-threshold shell,command='echo TestOutput'" 2 "^TestOutput$"check_top_q_hist "multiple actions" \	"timerlat TOOL -T 2 --on-threshold shell,command='echo -n 1' --on-threshold shell,command='echo 2'" 2 "^12$"check "hist stop at failed action" \	"timerlat hist -T 2 --on-threshold shell,command='echo -n 1; false' --on-threshold shell,command='echo -n 2'" 2 "^1# RTLA timerlat histogram$"check "top stop at failed action" \	"timerlat top -T 2 --on-threshold shell,command='echo -n abc; false' --on-threshold shell,command='echo -n defgh'" 2 "^abc" "defgh"check_top_q_hist "with continue" \	"timerlat TOOL -T 2 -d 5s --on-threshold shell,command='echo TestOutput' --on-threshold continue" 0 "^TestOutput$"check_top_q_hist "with conditional continue" \	"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$" "^2$"check_top_hist "with trace output at end" \	"timerlat TOOL -d 1s --on-end trace" 0 "^  Saving trace to timerlat_trace.txt$" # BPF action program testsif [ "$option" -eq 0 ]then	# Test BPF action program properly in BPF mode	[ -z "$BPFTOOL" ] && BPFTOOL=bpftool	check_top_q_hist "with BPF action program (BPF mode)" \		"timerlat TOOL -T 2 --bpf-action $testdir/bpf/bpf_action_map.o --on-threshold shell,command='$BPFTOOL map dump name rtla_test_map'" \		2 '"value": 42'else	# Test BPF action program failure in non-BPF mode	check_top_q_hist "with BPF action program (non-BPF mode)" \		"timerlat TOOL -T 2 --bpf-action $testdir/bpf/bpf_action_map.o" \		1 "BPF actions are not supported in tracefs-only mode"fidone test_end