1#!/usr/bin/python 2# Copyright (C) 2019 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 16# This synthetic trace tests handling of the mm_id field in the rss_stat 17# event. 18 19from os import sys, path 20 21sys.path.append(path.dirname(path.dirname(path.abspath(__file__)))) 22import synth_common 23 24trace = synth_common.create_trace() 25 26trace.add_packet(ts=1) 27trace.add_process(10, 0, "process") 28 29trace.add_ftrace_packet(0) 30 31# Create a new child process (treated internally as a thread) of kthreadd. 32trace.add_newtask(ts=50, tid=2, new_tid=3, new_comm="kthread_child", flags=0) 33 34# Add an event on tid 3 which affects its own rss. 35trace.add_rss_stat(ts=90, tid=3, member=0, size=9, mm_id=4321, curr=True) 36 37# Try to add an event for tid 10. However, as we've not seen an event 38# with curr == True for tid == 10, this event will be dropped. 39trace.add_rss_stat(ts=91, tid=3, member=0, size=900, mm_id=1234, curr=False) 40 41# Add an event for tid 3 from tid 10. This emulates e.g. direct reclaim 42# where a process reaches into another process' mm struct. 43trace.add_rss_stat(ts=99, tid=10, member=0, size=10, mm_id=4321, curr=False) 44 45# Add an event on tid 10 which affects its own rss. 46trace.add_rss_stat(ts=100, tid=10, member=0, size=1000, mm_id=1234, curr=True) 47 48# Add an event on tid 10 from tid 3. This emlates e.g. background reclaim 49# where kthreadd is cleaning up the mm struct of another process. 50trace.add_rss_stat(ts=101, tid=3, member=0, size=900, mm_id=1234, curr=False) 51 52print(trace.trace.SerializeToString()) 53