summaryrefslogtreecommitdiffstats
blob: 5df018581b0f29489594d285365d123955bc56bd (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
/*
 * 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.
 */

#define LOG_TAG "storaged"

#include <dirent.h>
#include <fcntl.h>
#include <linux/time.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <time.h>
#include <unistd.h>

#include <iomanip>
#include <sstream>
#include <string>
#include <unordered_map>

#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/stringprintf.h>
#include <android-base/strings.h>
#include <log/log_event_list.h>

#include <storaged.h>
#include <storaged_utils.h>

bool parse_disk_stats(const char* disk_stats_path, struct disk_stats* stats) {
    // Get time
    struct timespec ts;
    // Use monotonic to exclude suspend time so that we measure IO bytes/sec
    // when system is running.
    int ret = clock_gettime(CLOCK_MONOTONIC, &ts);
    if (ret < 0) {
        PLOG_TO(SYSTEM, ERROR) << "clock_gettime() failed";
        return false;
    }

    std::string buffer;
    if (!android::base::ReadFileToString(disk_stats_path, &buffer)) {
        PLOG_TO(SYSTEM, ERROR) << disk_stats_path << ": ReadFileToString failed.";
        return false;
    }

    // Regular diskstats entries
    std::stringstream ss(buffer);
    for (uint i = 0; i < DISK_STATS_SIZE; ++i) {
        ss >> *((uint64_t*)stats + i);
    }
    // Other entries
    stats->start_time = 0;
    stats->end_time = (uint64_t)ts.tv_sec * SEC_TO_MSEC +
        ts.tv_nsec / (MSEC_TO_USEC * USEC_TO_NSEC);
    stats->counter = 1;
    stats->io_avg = (double)stats->io_in_flight;
    return true;
}

struct disk_perf get_disk_perf(struct disk_stats* stats) {
    struct disk_perf perf;
    memset(&perf, 0, sizeof(struct disk_perf));  // initialize

    if (stats->io_ticks) {
        if (stats->read_ticks) {
            unsigned long long divisor = stats->read_ticks * stats->io_ticks;
            perf.read_perf = ((unsigned long long)SECTOR_SIZE *
                                        stats->read_sectors *
                                        stats->io_in_queue +
                                        (divisor >> 1)) /
                                            divisor;
            perf.read_ios = ((unsigned long long)SEC_TO_MSEC *
                                        stats->read_ios *
                                        stats->io_in_queue +
                                        (divisor >> 1)) /
                                            divisor;
        }
        if (stats->write_ticks) {
            unsigned long long divisor = stats->write_ticks * stats->io_ticks;
                        perf.write_perf = ((unsigned long long)SECTOR_SIZE *
                                                    stats->write_sectors *
                                                    stats->io_in_queue +
                                                    (divisor >> 1)) /
                                                        divisor;
                        perf.write_ios = ((unsigned long long)SEC_TO_MSEC *
                                                    stats->write_ios *
                                                    stats->io_in_queue +
                                                    (divisor >> 1)) /
                                                        divisor;
        }
        perf.queue = (stats->io_in_queue + (stats->io_ticks >> 1)) /
                                stats->io_ticks;
    }
    return perf;
}

struct disk_stats get_inc_disk_stats(struct disk_stats* prev, struct disk_stats* curr) {
    struct disk_stats inc;
    for (uint i = 0; i < DISK_STATS_SIZE; ++i) {
        if (i == DISK_STATS_IO_IN_FLIGHT_IDX) {
            continue;
        }

        *((uint64_t*)&inc + i) =
                *((uint64_t*)curr + i) - *((uint64_t*)prev + i);
    }
    // io_in_flight is exception
    inc.io_in_flight = curr->io_in_flight;

    inc.start_time = prev->end_time;
    inc.end_time = curr->end_time;
    inc.io_avg = curr->io_avg;
    inc.counter = 1;

    return inc;
}

// Add src to dst
void add_disk_stats(struct disk_stats* src, struct disk_stats* dst) {
    if (dst->end_time != 0 && dst->end_time != src->start_time) {
        LOG_TO(SYSTEM, WARNING) << "Two dis-continuous periods of diskstats"
            << " are added. dst end with " << dst->end_time
            << ", src start with " << src->start_time;
    }

    for (uint i = 0; i < DISK_STATS_SIZE; ++i) {
        if (i == DISK_STATS_IO_IN_FLIGHT_IDX) {
            continue;
        }

        *((uint64_t*)dst + i) += *((uint64_t*)src + i);
    }

    dst->io_in_flight = src->io_in_flight;
    if (dst->counter + src->counter) {
        dst->io_avg = ((dst->io_avg * dst->counter) + (src->io_avg * src->counter)) /
                        (dst->counter + src->counter);
    }
    dst->counter += src->counter;
    dst->end_time = src->end_time;
    if (dst->start_time == 0) {
        dst->start_time = src->start_time;
    }
}

bool parse_emmc_ecsd(int ext_csd_fd, struct emmc_info* info) {
    CHECK(ext_csd_fd >= 0);
    struct hex {
        char str[2];
    };
    // List of interesting offsets
    static const size_t EXT_CSD_REV_IDX = 192 * sizeof(hex);
    static const size_t EXT_PRE_EOL_INFO_IDX = 267 * sizeof(hex);
    static const size_t EXT_DEVICE_LIFE_TIME_EST_A_IDX = 268 * sizeof(hex);
    static const size_t EXT_DEVICE_LIFE_TIME_EST_B_IDX = 269 * sizeof(hex);

    // Read file
    CHECK(lseek(ext_csd_fd, 0, SEEK_SET) == 0);
    std::string buffer;
    if (!android::base::ReadFdToString(ext_csd_fd, &buffer)) {
        PLOG_TO(SYSTEM, ERROR) << "ReadFdToString failed.";
        return false;
    }

    if (buffer.length() < EXT_CSD_FILE_MIN_SIZE) {
        LOG_TO(SYSTEM, ERROR) << "EMMC ext csd file has truncated content. "
            << "File length: " << buffer.length();
        return false;
    }

    std::string sub;
    std::stringstream ss;
    // Parse EXT_CSD_REV
    int ext_csd_rev = -1;
    sub = buffer.substr(EXT_CSD_REV_IDX, sizeof(hex));
    ss << sub;
    ss >> std::hex >> ext_csd_rev;
    if (ext_csd_rev < 0) {
        LOG_TO(SYSTEM, ERROR) << "Failure on parsing EXT_CSD_REV.";
        return false;
    }
    ss.clear();

    static const char* ver_str[] = {
        "4.0", "4.1", "4.2", "4.3", "Obsolete", "4.41", "4.5", "5.0"
    };

    strlcpy(info->mmc_ver,
            (ext_csd_rev < (int)(sizeof(ver_str) / sizeof(ver_str[0]))) ?
                           ver_str[ext_csd_rev] :
                           "Unknown",
            MMC_VER_STR_LEN);

    if (ext_csd_rev < 7) {
        return 0;
    }

    // Parse EXT_PRE_EOL_INFO
    info->eol = -1;
    sub = buffer.substr(EXT_PRE_EOL_INFO_IDX, sizeof(hex));
    ss << sub;
    ss >> std::hex >> info->eol;
    if (info->eol < 0) {
        LOG_TO(SYSTEM, ERROR) << "Failure on parsing EXT_PRE_EOL_INFO.";
        return false;
    }
    ss.clear();

    // Parse DEVICE_LIFE_TIME_EST
    info->lifetime_a = -1;
    sub = buffer.substr(EXT_DEVICE_LIFE_TIME_EST_A_IDX, sizeof(hex));
    ss << sub;
    ss >> std::hex >> info->lifetime_a;
    if (info->lifetime_a < 0) {
        LOG_TO(SYSTEM, ERROR) << "Failure on parsing EXT_DEVICE_LIFE_TIME_EST_TYP_A.";
        return false;
    }
    ss.clear();

    info->lifetime_b = -1;
    sub = buffer.substr(EXT_DEVICE_LIFE_TIME_EST_B_IDX, sizeof(hex));
    ss << sub;
    ss >> std::hex >> info->lifetime_b;
    if (info->lifetime_b < 0) {
        LOG_TO(SYSTEM, ERROR) << "Failure on parsing EXT_DEVICE_LIFE_TIME_EST_TYP_B.";
        return false;
    }
    ss.clear();

    return true;
}

static bool cmp_uid_info(struct uid_info l, struct uid_info r) {
    // Compare background I/O first.
    for (int i = UID_STATS - 1; i >= 0; i--) {
        uint64_t l_bytes = l.io[i].read_bytes + l.io[i].write_bytes;
        uint64_t r_bytes = r.io[i].read_bytes + r.io[i].write_bytes;
        uint64_t l_chars = l.io[i].rchar + l.io[i].wchar;
        uint64_t r_chars = r.io[i].rchar + r.io[i].wchar;

        if (l_bytes != r_bytes) {
            return l_bytes > r_bytes;
        }
        if (l_chars != r_chars) {
            return l_chars > r_chars;
        }
    }

    return l.name < r.name;
}

void sort_running_uids_info(std::vector<struct uid_info> &uids) {
    std::sort(uids.begin(), uids.end(), cmp_uid_info);
}

// Logging functions
void log_console_running_uids_info(std::vector<struct uid_info> uids) {
// Sample Output:
//                                       Application        FG Read       FG Write        FG Read       FG Write        BG Read       BG Write        BG Read       BG Write
//                                          NAME/UID     Characters     Characters          Bytes          Bytes     Characters     Characters          Bytes          Bytes
//                                        ----------     ----------     ----------     ----------     ----------     ----------     ----------     ----------     ----------
//                      com.google.android.gsf.login              0              0              0              0       57195097        5137089      176386048        6512640
//           com.google.android.googlequicksearchbox              0              0              0              0        4196821       12123468       34295808       13225984
//                                              1037           4572            537              0              0         131352        5145643       34263040        5144576
//                        com.google.android.youtube           2182             70              0              0       63969383         482939       38731776         466944

    // Title
    printf("Per-UID I/O stats\n");
    printf("                                       Application        FG Read       FG Write        FG Read       FG Write        BG Read       BG Write        BG Read       BG Write       FG fsync       BG fsync\n"
           "                                          NAME/UID     Characters     Characters          Bytes          Bytes     Characters     Characters          Bytes          Bytes                              \n"
           "                                        ----------     ----------     ----------     ----------     ----------     ----------     ----------     ----------     ----------     ----------     ----------\n");

    for (const auto& uid : uids) {
        printf("%50s%15ju%15ju%15ju%15ju%15ju%15ju%15ju%15ju%15ju%15ju\n", uid.name.c_str(),
            uid.io[0].rchar, uid.io[0].wchar, uid.io[0].read_bytes, uid.io[0].write_bytes,
            uid.io[1].rchar, uid.io[1].wchar, uid.io[1].read_bytes, uid.io[1].write_bytes,
            uid.io[0].fsync, uid.io[1].fsync);
    }
    fflush(stdout);
}

#if DEBUG
void log_debug_disk_perf(struct disk_perf* perf, const char* type) {
    // skip if the input structure are all zeros
    if (perf == NULL) return;
    struct disk_perf zero_cmp;
    memset(&zero_cmp, 0, sizeof(zero_cmp));
    if (memcmp(&zero_cmp, perf, sizeof(struct disk_perf)) == 0) return;

    LOG_TO(SYSTEM, INFO) << "perf(ios) " << type
              << " rd:" << perf->read_perf << "KB/s(" << perf->read_ios << "/s)"
              << " wr:" << perf->write_perf << "KB/s(" << perf->write_ios << "/s)"
              << " q:" << perf->queue;
}
#else
void log_debug_disk_perf(struct disk_perf* /* perf */, const char* /* type */) {}
#endif

void log_event_disk_stats(struct disk_stats* stats, const char* type) {
    // skip if the input structure are all zeros
    if (stats == NULL) return;
    struct disk_stats zero_cmp;
    memset(&zero_cmp, 0, sizeof(zero_cmp));
    // skip event logging diskstats when it is zero increment (all first 11 entries are zero)
    if (memcmp(&zero_cmp, stats, sizeof(uint64_t) * DISK_STATS_SIZE) == 0) return;

    android_log_event_list(EVENTLOGTAG_DISKSTATS)
        << type << stats->start_time << stats->end_time
        << stats->read_ios << stats->read_merges
        << stats->read_sectors << stats->read_ticks
        << stats->write_ios << stats->write_merges
        << stats->write_sectors << stats->write_ticks
        << (uint64_t)stats->io_avg << stats->io_ticks << stats->io_in_queue
        << LOG_ID_EVENTS;
}

void log_event_emmc_info(struct emmc_info* info) {
    // skip if the input structure are all zeros
    if (info == NULL) return;
    struct emmc_info zero_cmp;
    memset(&zero_cmp, 0, sizeof(zero_cmp));
    if (memcmp(&zero_cmp, info, sizeof(struct emmc_info)) == 0) return;

    android_log_event_list(EVENTLOGTAG_EMMCINFO)
        << info->mmc_ver << info->eol << info->lifetime_a << info->lifetime_b
        << LOG_ID_EVENTS;
}