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a80db1f857
The -P option is used to set priority of osnoise and timerlat threads. Extend the test for -P with --on-threshold calling a script that looks for running timerlat threads and checks if their priority is set correctly. As --on-threshold is only supported by timerlat at the moment, this is only implemented there so far. Cc: John Kacur <jkacur@redhat.com> Cc: Luis Goncalves <lgoncalv@redhat.com> Cc: Chang Yin <cyin@redhat.com> Cc: Costa Shulyupin <costa.shul@redhat.com> Link: https://lore.kernel.org/20250725133817.59237-3-tglozar@redhat.com Signed-off-by: Tomas Glozar <tglozar@redhat.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
131 lines
3.2 KiB
Bash
131 lines
3.2 KiB
Bash
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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test_begin() {
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# Count tests to allow the test harness to double-check if all were
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# included correctly.
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ctr=0
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[ -z "$RTLA" ] && RTLA="./rtla"
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[ -n "$TEST_COUNT" ] && echo "1..$TEST_COUNT"
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}
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reset_osnoise() {
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# Reset osnoise options to default and remove any dangling instances created
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# by improperly exited rtla runs.
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pushd /sys/kernel/tracing >/dev/null || return 1
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# Remove dangling instances created by previous rtla run
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echo 0 > tracing_thresh
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cd instances
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for i in osnoise_top osnoise_hist timerlat_top timerlat_hist
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do
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[ ! -d "$i" ] && continue
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rmdir "$i"
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done
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# Reset options to default
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# Note: those are copied from the default values of osnoise_data
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# in kernel/trace/trace_osnoise.c
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cd ../osnoise
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echo all > cpus
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echo DEFAULTS > options
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echo 1000000 > period_us
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echo 0 > print_stack
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echo 1000000 > runtime_us
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echo 0 > stop_tracing_total_us
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echo 0 > stop_tracing_us
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echo 1000 > timerlat_period_us
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popd >/dev/null
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}
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check() {
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test_name=$0
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tested_command=$1
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expected_exitcode=${3:-0}
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expected_output=$4
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# Simple check: run rtla with given arguments and test exit code.
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# If TEST_COUNT is set, run the test. Otherwise, just count.
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ctr=$(($ctr + 1))
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if [ -n "$TEST_COUNT" ]
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then
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# Reset osnoise options before running test.
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[ "$NO_RESET_OSNOISE" == 1 ] || reset_osnoise
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# Run rtla; in case of failure, include its output as comment
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# in the test results.
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result=$(eval stdbuf -oL $TIMEOUT "$RTLA" $2 2>&1); exitcode=$?
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# Test if the results matches if requested
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if [ -n "$expected_output" ]
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then
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grep -E "$expected_output" <<< "$result" > /dev/null; grep_result=$?
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else
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grep_result=0
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fi
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if [ $exitcode -eq $expected_exitcode ] && [ $grep_result -eq 0 ]
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then
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echo "ok $ctr - $1"
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else
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echo "not ok $ctr - $1"
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# Add rtla output and exit code as comments in case of failure
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echo "$result" | col -b | while read line; do echo "# $line"; done
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printf "#\n# exit code %s\n" $exitcode
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[ -n "$expected_output" ] && [ $grep_result -ne 0 ] && \
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printf "# Output match failed: \"%s\"\n" "$expected_output"
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fi
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fi
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}
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check_with_osnoise_options() {
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# Do the same as "check", but with pre-set osnoise options.
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# Note: rtla should reset the osnoise options, this is used to test
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# if it indeed does so.
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# Save original arguments
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arg1=$1
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arg2=$2
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arg3=$3
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# Apply osnoise options (if not dry run)
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if [ -n "$TEST_COUNT" ]
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then
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[ "$NO_RESET_OSNOISE" == 1 ] || reset_osnoise
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shift
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shift
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while shift
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do
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[ "$1" == "" ] && continue
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option=$(echo $1 | cut -d '=' -f 1)
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value=$(echo $1 | cut -d '=' -f 2)
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echo "option: $option, value: $value"
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echo "$value" > "/sys/kernel/tracing/osnoise/$option" || return 1
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done
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fi
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NO_RESET_OSNOISE=1 check "$arg1" "$arg2" "$arg3"
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}
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set_timeout() {
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TIMEOUT="timeout -v -k 15s $1"
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}
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unset_timeout() {
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unset TIMEOUT
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}
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set_no_reset_osnoise() {
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NO_RESET_OSNOISE=1
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}
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unset_no_reset_osnoise() {
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unset NO_RESET_OSNOISE
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}
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test_end() {
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# If running without TEST_COUNT, tests are not actually run, just
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# counted. In that case, re-run the test with the correct count.
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[ -z "$TEST_COUNT" ] && TEST_COUNT=$ctr exec bash $0 || true
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}
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# Avoid any environmental discrepancies
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export LC_ALL=C
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unset_timeout
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