1#!/usr/bin/env python3 2# Copyright (C) 2020 The Android Open Source Project 3# 4# Licensed under the Apache License, Version 2.0 (the "License"); 5# you may not use this file except in compliance with the License. 6# You may obtain a copy of the License at 7# 8# http://www.apache.org/licenses/LICENSE-2.0 9# 10# Unless required by applicable law or agreed to in writing, software 11# distributed under the License is distributed on an "AS IS" BASIS, 12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13# See the License for the specific language governing permissions and 14# limitations under the License. 15 16from os import sys, path 17 18import synth_common 19 20trace = synth_common.create_trace() 21 22# Add a tracing_started packet which should cause all ftrace 23# events before this ts to be dropped. 24packet = trace.add_packet(ts=100) 25packet.service_event.tracing_started = True 26 27# Everything in this packet should be dropped. 28trace.add_ftrace_packet(cpu=0) 29trace.add_sched(ts=50, prev_pid=1, next_pid=2, prev_comm='t1', next_comm='t2') 30trace.add_sched(ts=60, prev_pid=2, next_pid=1, prev_comm='t2', next_comm='t1') 31trace.add_sched(ts=70, prev_pid=1, next_pid=2, prev_comm='t1', next_comm='t2') 32trace.add_sched( 33 ts=80, prev_pid=2, next_pid=0, prev_comm='t2', next_comm='swapper') 34 35# The first 2 slices here should also be dropped but the last one should be 36# retained. 37trace.add_ftrace_packet(cpu=2) 38trace.add_sched( 39 ts=80, prev_pid=0, next_pid=1, prev_comm='swapper', next_comm='t1') 40trace.add_sched(ts=90, prev_pid=1, next_pid=2, prev_comm='t1', next_comm='t2') 41trace.add_sched(ts=100, prev_pid=2, next_pid=1, prev_comm='t2', next_comm='t1') 42trace.add_sched(ts=110, prev_pid=1, next_pid=2, prev_comm='t1', next_comm='t2') 43 44sys.stdout.buffer.write(trace.trace.SerializeToString()) 45