1 #!/bin/bash 2 # 3 # SPDX-License-Identifier: Apache-2.0 4 # 5 # Copyright (C) 2015, ARM Limited and contributors. 6 # 7 # Licensed under the Apache License, Version 2.0 (the "License"); you may 8 # not use this file except in compliance with the License. 9 # You may obtain a copy of the License at 10 # 11 # http://www.apache.org/licenses/LICENSE-2.0 12 # 13 # Unless required by applicable law or agreed to in writing, software 14 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 15 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 # See the License for the specific language governing permissions and 17 # limitations under the License. 18 # 19 20 FREQS=$(cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq) 21 CPU=0; for F in $FREQS; do 22 echo "cpu_frequency: state=$F cpu_id=$CPU" > /sys/kernel/debug/tracing/trace_marker 23 let CPU++ 24 done 25 26
