7045003d0d
It implements logging of following atoms: -- LMK_STATE_CHANGED -- LMK_KILL_OCCURRED We would like to gather memory metrics of the process killed by LMKD because by gathering this info we would be able to analyze and improve system health by potentially reducing memory footprint of the process. This feature would be available on production builds. To know more about this see: http://go/android-p-memory-metrics Bug: 65738734 Test: Tested manually Change-Id: I064e0cdcb47c3b4c95d8b8d5654050c9812008d8
45 lines
1.5 KiB
C
45 lines
1.5 KiB
C
/*
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* Copyright 2018 Google, Inc
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*
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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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*/
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#pragma once
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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/*
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* The single event tag id for all stats logs.
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* Keep this in sync with system/core/logcat/event.logtags
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*/
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const static int kStatsEventTag = 1937006964;
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/**
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* Logs the change in LMKD state which is used as start/stop boundaries for logging
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* LMK_KILL_OCCURRED event.
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* Code: LMK_STATE_CHANGED = 54
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*/
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int
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stats_write_lmk_state_changed(android_log_context ctx, int32_t code, int32_t state);
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/**
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* Logs the event when LMKD kills a process to reduce memory pressure.
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* Code: LMK_KILL_OCCURRED = 51
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*/
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int
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stats_write_lmk_kill_occurred(android_log_context ctx, int32_t code, int32_t uid,
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char const* process_name, int32_t oom_score, int64_t pgfault,
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int64_t pgmajfault, int64_t rss_in_bytes, int64_t cache_in_bytes,
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int64_t swap_in_bytes);
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__END_DECLS
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