storaged: monitor per-uid IO usage (bcd6e3b9) · Commits · e / os / android_system_core

storaged/Android.mk

+3 −1

Original line number	Diff line number	Diff line
		@@ -2,14 +2,16 @@

		LOCAL_PATH := $(call my-dir)

		LIBSTORAGED_SHARED_LIBRARIES := libbinder libbase libutils libcutils liblog libsysutils libcap
		LIBSTORAGED_SHARED_LIBRARIES := libbinder libbase libutils libcutils liblog libsysutils libcap libpackagelistparser

		include $(CLEAR_VARS)

		LOCAL_SRC_FILES := storaged.cpp \
		storaged_service.cpp \
		storaged_utils.cpp \
		storaged_uid_monitor.cpp \
		EventLogTags.logtags

		LOCAL_MODULE := libstoraged
		LOCAL_CFLAGS := -Werror
		LOCAL_C_INCLUDES := $(LOCAL_PATH)/include external/googletest/googletest/include

storaged/EventLogTags.logtags

+2 −0

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		@@ -37,3 +37,5 @@
		2732 storaged_disk_stats (type\|3),(start_time\|2\|3),(end_time\|2\|3),(read_ios\|2\|1),(read_merges\|2\|1),(read_sectors\|2\|1),(read_ticks\|2\|3),(write_ios\|2\|1),(write_merges\|2\|1),(write_sectors\|2\|1),(write_ticks\|2\|3),(o_in_flight\|2\|1),(io_ticks\|2\|3),(io_in_queue\|2\|1)

		2733 storaged_emmc_info (mmc_ver\|3),(eol\|1),(lifetime_a\|1),(lifetime_b\|1)

		2734 storaged_uid_io_alert (name\|3),(read\|2),(write\|2),(interval\|2)
		No newline at end of file

storaged/include/storaged.h

+19 −1

Original line number	Diff line number	Diff line
		@@ -17,13 +17,17 @@
		#ifndef _STORAGED_H_
		#define _STORAGED_H_

		#include <queue>
		#include <semaphore.h>
		#include <stdint.h>
		#include <time.h>

		#include <queue>
		#include <string>
		#include <unordered_map>
		#include <vector>

		#include "storaged_uid_monitor.h"

		#define FRIEND_TEST(test_case_name, test_name) \
		friend class test_case_name##_##test_name##_Test

		@@ -165,6 +169,8 @@ public:
		#define MMC_DISK_STATS_PATH "/sys/block/mmcblk0/stat"
		#define SDA_DISK_STATS_PATH "/sys/block/sda/stat"
		#define EMMC_ECSD_PATH "/d/mmc0/mmc0:0001/ext_csd"
		#define UID_IO_STATS_PATH "/proc/uid_io/stats"

		class disk_stats_monitor {
		private:
		FRIEND_TEST(storaged_test, disk_stats_monitor);
		@@ -260,12 +266,15 @@ public:
		#define DEFAULT_PERIODIC_CHORES_INTERVAL_UNIT ( 60 )
		#define DEFAULT_PERIODIC_CHORES_INTERVAL_DISK_STATS_PUBLISH ( 3600 )
		#define DEFAULT_PERIODIC_CHORES_INTERVAL_EMMC_INFO_PUBLISH ( 86400 )
		#define DEFAULT_PERIODIC_CHORES_INTERVAL_UID_IO_ALERT ( 3600 )

		struct storaged_config {
		int periodic_chores_interval_unit;
		int periodic_chores_interval_disk_stats_publish;
		int periodic_chores_interval_emmc_info_publish;
		int periodic_chores_interval_uid_io;
		bool proc_taskio_readable; // are /proc/[pid]/{io, comm, cmdline, stat} all readable
		bool proc_uid_io_available; // whether uid_io is accessible
		bool emmc_available; // whether eMMC est_csd file is readable
		bool diskstats_available; // whether diskstats is accessible
		};
		@@ -278,6 +287,7 @@ private:
		disk_stats_monitor mDsm;
		emmc_info_t mEmmcInfo;
		tasks_t mTasks;
		uid_monitor mUidm;
		time_t mStarttime;
		public:
		storaged_t(void);
		@@ -295,6 +305,9 @@ public:
		void set_emmc_interval(int emmc_info) {
		mConfig.periodic_chores_interval_emmc_info_publish = emmc_info;
		}
		void set_uid_io_interval(int uid_io) {
		mUidm.set_periodic_chores_interval(uid_io);
		}
		std::vector<struct task_info> get_tasks(void) {
		// There could be a race when get_tasks() and the main thread is updating at the same time
		// While update_running_tasks() is updating the critical sections at the end of the function
		@@ -312,11 +325,16 @@ public:
		time_t get_starttime(void) {
		return mStarttime;
		}

		std::unordered_map<uint32_t, struct uid_info> get_uids(void) {
		return mUidm.get_uids();
		}
		};

		// Eventlog tag
		// The content must match the definition in EventLogTags.logtags
		#define EVENTLOGTAG_DISKSTATS ( 2732 )
		#define EVENTLOGTAG_EMMCINFO ( 2733 )
		#define EVENTLOGTAG_UID_IO_ALERT ( 2734 )

		#endif /* _STORAGED_H_ */

storaged/include/storaged_service.h

+4 −0

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		@@ -31,9 +31,11 @@ class IStoraged : public IInterface {
		public:
		enum {
		DUMPTASKS = IBinder::FIRST_CALL_TRANSACTION,
		DUMPUIDS = IBinder::FIRST_CALL_TRANSACTION + 1,
		};
		// Request the service to run the test function
		virtual std::vector<struct task_info> dump_tasks(const char* option) = 0;
		virtual std::vector<struct uid_info> dump_uids(const char* option) = 0;

		DECLARE_META_INTERFACE(Storaged);
		};
		@@ -43,6 +45,7 @@ class BpStoraged : public BpInterface<IStoraged> {
		public:
		BpStoraged(const sp<IBinder>& impl) : BpInterface<IStoraged>(impl){};
		virtual std::vector<struct task_info> dump_tasks(const char* option);
		virtual std::vector<struct uid_info> dump_uids(const char* option);
		};

		// Server
		@@ -52,6 +55,7 @@ class BnStoraged : public BnInterface<IStoraged> {

		class Storaged : public BnStoraged {
		virtual std::vector<struct task_info> dump_tasks(const char* option);
		virtual std::vector<struct uid_info> dump_uids(const char* option);
		};

		sp<IStoraged> get_storaged_service();

storaged/include/storaged_uid_monitor.h

0 → 100644

+59 −0

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		/*
		* Copyright (C) 2016 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		#ifndef _STORAGED_UID_MONITOR_H_
		#define _STORAGED_UID_MONITOR_H_

		#include <stdint.h>

		#include <string>
		#include <unordered_map>

		enum {
		UID_FOREGROUND = 0,
		UID_BACKGROUND = 1,
		UID_STATS_SIZE = 2
		};

		struct uid_io_stats {
		uint64_t rchar; // characters read
		uint64_t wchar; // characters written
		uint64_t read_bytes; // bytes read (from storage layer)
		uint64_t write_bytes; // bytes written (to storage layer)
		};

		struct uid_info {
		uint32_t uid; // user id
		std::string name; // package name
		struct uid_io_stats io[UID_STATS_SIZE]; // [0]:foreground [1]:background

		};

		class uid_monitor {
		private:
		std::unordered_map<uint32_t, struct uid_info> last_uids;
		void set_last_uids(std::unordered_map<uint32_t, struct uid_info>&& uids, uint64_t ts);
		int interval; // monitor interval in seconds
		uint64_t last_report_ts; // timestamp of last report in nsec
		public:
		uid_monitor();
		void set_periodic_chores_interval(int t) { interval = t; }
		int get_periodic_chores_interval() { return interval; }
		std::unordered_map<uint32_t, struct uid_info> get_uids();
		void report();
		};

		#endif /* _STORAGED_UID_MONITOR_H_ */