mirror of
https://github.com/openharmony/ark_runtime_core.git
synced 2026-07-18 18:24:30 -04:00
Ilya Trubachev
114 lines
2.6 KiB
Bash
Executable File
114 lines
2.6 KiB
Bash
Executable File
#!/bin/bash
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# Copyright (c) 2021-2022 Huawei Device Co., Ltd.
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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set -e
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TRACKING_PATH=/sys/kernel/debug/tracing
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OUTPUT=$1
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print_usage() {
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echo "Usage: $0 <trace_output> <tracing_time> <trace_buffer_size_kb>"
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}
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# Set write permission for all users on trace_marker
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setup_permissions() {
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chmod +rx $(dirname $TRACKING_PATH)
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chmod +rx $TRACKING_PATH
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chmod o+w $TRACKING_PATH/trace_marker
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}
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clear_trace() {
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echo > $TRACKING_PATH/trace
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}
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category_enable() {
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echo 1 > $TRACKING_PATH/events/sched/sched_switch/enable
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echo 1 > $TRACKING_PATH/events/sched/sched_wakeup/enable
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}
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category_disable() {
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echo 0 > $TRACKING_PATH/events/sched/sched_switch/enable
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echo 0 > $TRACKING_PATH/events/sched/sched_wakeup/enable
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}
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start_trace() {
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echo "Warning: If the PandaVM aborted while writing trace, try to enlarge the trace buffer size here."
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echo $BUFF_SIZE > $TRACKING_PATH/buffer_size_kb
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echo 'global' > $TRACKING_PATH/trace_clock
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echo 'nop' > $TRACKING_PATH/current_tracer
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echo 0 > $TRACKING_PATH/options/overwrite
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category_enable
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clear_trace
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echo 1 > $TRACKING_PATH/tracing_on
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}
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dump_trace() {
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cat $TRACKING_PATH/trace > $OUTPUT
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chmod o+w $OUTPUT
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clear_trace
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}
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stop_trace() {
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echo 0 > $TRACKING_PATH/tracing_on
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category_disable
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dump_trace
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echo 4 > $TRACKING_PATH/buffer_size_kb
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}
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sigint_handler() {
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stop_trace
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echo
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echo "Stopped"
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exit 0
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}
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# main
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if [ $(id -u) != 0 ] ; then
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echo 'Run this script as root or use sudo';
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exit 1;
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fi;
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if [ -z "$OUTPUT" ] || [ ! -z "$4" ]; then
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print_usage
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exit 1
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fi;
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TIME_TO_WAIT=$2
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if [ -z "$2" ]; then
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echo "Warning: tracing time is not specified, set to 60 seconds"
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TIME_TO_WAIT=60
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fi;
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BUFF_SIZE=$3
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if [ -z "$3" ]; then
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echo "Warning: trace buffer size is not specified, set to 8 MB"
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BUFF_SIZE=8192
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fi;
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setup_permissions
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trap sigint_handler INT # Tracing will be interrupted on SIGINT
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start_trace
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echo "Tracing has started. Press ^C to finish"
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sleep $TIME_TO_WAIT
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stop_trace
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echo "Stopped by timeout"
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