projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 7394daa8 DH |
1 | /* FS-Cache statistics |
| 2 | * | |
| 3 | * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. | |
| 4 | * Written by David Howells (dhowells@redhat.com) | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU General Public License | |
| 8 | * as published by the Free Software Foundation; either version | |
| 9 | * 2 of the License, or (at your option) any later version. | |
| 10 | */ | |
| 11 | ||
| 12 | #define FSCACHE_DEBUG_LEVEL THREAD | |
| 13 | #include <linux/module.h> | |
| 14 | #include <linux/proc_fs.h> | |
| 15 | #include <linux/seq_file.h> | |
| 16 | #include "internal.h" | |
| 17 | ||
| 18 | /* | |
| 19 | * operation counters | |
| 20 | */ | |
| 21 | atomic_t fscache_n_op_pend; | |
| 22 | atomic_t fscache_n_op_run; | |
| 23 | atomic_t fscache_n_op_enqueue; | |
| 24 | atomic_t fscache_n_op_requeue; | |
| 25 | atomic_t fscache_n_op_deferred_release; | |
| 03cdd0e4 | 26 | atomic_t fscache_n_op_initialised; |
| 7394daa8 DH |
27 | atomic_t fscache_n_op_release; |
| 28 | atomic_t fscache_n_op_gc; | |
| 5753c441 | 29 | atomic_t fscache_n_op_cancelled; |
| e3d4d28b | 30 | atomic_t fscache_n_op_rejected; |
| 7394daa8 DH |
31 | |
| 32 | atomic_t fscache_n_attr_changed; | |
| 33 | atomic_t fscache_n_attr_changed_ok; | |
| 34 | atomic_t fscache_n_attr_changed_nobufs; | |
| 35 | atomic_t fscache_n_attr_changed_nomem; | |
| 36 | atomic_t fscache_n_attr_changed_calls; | |
| 37 | ||
| 38 | atomic_t fscache_n_allocs; | |
| 39 | atomic_t fscache_n_allocs_ok; | |
| 40 | atomic_t fscache_n_allocs_wait; | |
| 41 | atomic_t fscache_n_allocs_nobufs; | |
| 5753c441 | 42 | atomic_t fscache_n_allocs_intr; |
| 60d543ca | 43 | atomic_t fscache_n_allocs_object_dead; |
| 7394daa8 DH |
44 | atomic_t fscache_n_alloc_ops; |
| 45 | atomic_t fscache_n_alloc_op_waits; | |
| 46 | ||
| 47 | atomic_t fscache_n_retrievals; | |
| 48 | atomic_t fscache_n_retrievals_ok; | |
| 49 | atomic_t fscache_n_retrievals_wait; | |
| 50 | atomic_t fscache_n_retrievals_nodata; | |
| 51 | atomic_t fscache_n_retrievals_nobufs; | |
| 52 | atomic_t fscache_n_retrievals_intr; | |
| 53 | atomic_t fscache_n_retrievals_nomem; | |
| 60d543ca | 54 | atomic_t fscache_n_retrievals_object_dead; |
| 7394daa8 DH |
55 | atomic_t fscache_n_retrieval_ops; |
| 56 | atomic_t fscache_n_retrieval_op_waits; | |
| 57 | ||
| 58 | atomic_t fscache_n_stores; | |
| 59 | atomic_t fscache_n_stores_ok; | |
| 60 | atomic_t fscache_n_stores_again; | |
| 61 | atomic_t fscache_n_stores_nobufs; | |
| 62 | atomic_t fscache_n_stores_oom; | |
| 63 | atomic_t fscache_n_store_ops; | |
| 64 | atomic_t fscache_n_store_calls; | |
| 1bccf513 DH |
65 | atomic_t fscache_n_store_pages; |
| 66 | atomic_t fscache_n_store_radix_deletes; | |
| 67 | atomic_t fscache_n_store_pages_over_limit; | |
| 7394daa8 | 68 | |
| 201a1542 DH |
69 | atomic_t fscache_n_store_vmscan_not_storing; |
| 70 | atomic_t fscache_n_store_vmscan_gone; | |
| 71 | atomic_t fscache_n_store_vmscan_busy; | |
| 72 | atomic_t fscache_n_store_vmscan_cancelled; | |
| 8c209ce7 | 73 | atomic_t fscache_n_store_vmscan_wait; |
| 201a1542 | 74 | |
| 7394daa8 DH |
75 | atomic_t fscache_n_marks; |
| 76 | atomic_t fscache_n_uncaches; | |
| 77 | ||
| 78 | atomic_t fscache_n_acquires; | |
| 79 | atomic_t fscache_n_acquires_null; | |
| 80 | atomic_t fscache_n_acquires_no_cache; | |
| 81 | atomic_t fscache_n_acquires_ok; | |
| 82 | atomic_t fscache_n_acquires_nobufs; | |
| 83 | atomic_t fscache_n_acquires_oom; | |
| 84 | ||
| ef778e7a DH |
85 | atomic_t fscache_n_invalidates; |
| 86 | atomic_t fscache_n_invalidates_run; | |
| 87 | ||
| 7394daa8 DH |
88 | atomic_t fscache_n_updates; |
| 89 | atomic_t fscache_n_updates_null; | |
| 90 | atomic_t fscache_n_updates_run; | |
| 91 | ||
| 92 | atomic_t fscache_n_relinquishes; | |
| 93 | atomic_t fscache_n_relinquishes_null; | |
| 94 | atomic_t fscache_n_relinquishes_waitcrt; | |
| 2175bb06 | 95 | atomic_t fscache_n_relinquishes_retire; |
| 7394daa8 DH |
96 | |
| 97 | atomic_t fscache_n_cookie_index; | |
| 98 | atomic_t fscache_n_cookie_data; | |
| 99 | atomic_t fscache_n_cookie_special; | |
| 100 | ||
| 101 | atomic_t fscache_n_object_alloc; | |
| 102 | atomic_t fscache_n_object_no_alloc; | |
| 103 | atomic_t fscache_n_object_lookups; | |
| 104 | atomic_t fscache_n_object_lookups_negative; | |
| 105 | atomic_t fscache_n_object_lookups_positive; | |
| fee096de | 106 | atomic_t fscache_n_object_lookups_timed_out; |
| 7394daa8 DH |
107 | atomic_t fscache_n_object_created; |
| 108 | atomic_t fscache_n_object_avail; | |
| 109 | atomic_t fscache_n_object_dead; | |
| 110 | ||
| 111 | atomic_t fscache_n_checkaux_none; | |
| 112 | atomic_t fscache_n_checkaux_okay; | |
| 113 | atomic_t fscache_n_checkaux_update; | |
| 114 | atomic_t fscache_n_checkaux_obsolete; | |
| 115 | ||
| 52bd75fd DH |
116 | atomic_t fscache_n_cop_alloc_object; |
| 117 | atomic_t fscache_n_cop_lookup_object; | |
| 118 | atomic_t fscache_n_cop_lookup_complete; | |
| 119 | atomic_t fscache_n_cop_grab_object; | |
| ef778e7a | 120 | atomic_t fscache_n_cop_invalidate_object; |
| 52bd75fd DH |
121 | atomic_t fscache_n_cop_update_object; |
| 122 | atomic_t fscache_n_cop_drop_object; | |
| 123 | atomic_t fscache_n_cop_put_object; | |
| 124 | atomic_t fscache_n_cop_sync_cache; | |
| 125 | atomic_t fscache_n_cop_attr_changed; | |
| 126 | atomic_t fscache_n_cop_read_or_alloc_page; | |
| 127 | atomic_t fscache_n_cop_read_or_alloc_pages; | |
| 128 | atomic_t fscache_n_cop_allocate_page; | |
| 129 | atomic_t fscache_n_cop_allocate_pages; | |
| 130 | atomic_t fscache_n_cop_write_page; | |
| 131 | atomic_t fscache_n_cop_uncache_page; | |
| 132 | atomic_t fscache_n_cop_dissociate_pages; | |
| 133 | ||
| 182d919b DH |
134 | atomic_t fscache_n_cache_no_space_reject; |
| 135 | atomic_t fscache_n_cache_stale_objects; | |
| 136 | atomic_t fscache_n_cache_retired_objects; | |
| 137 | atomic_t fscache_n_cache_culled_objects; | |
| 138 | ||
| 7394daa8 DH |
139 | /* |
| 140 | * display the general statistics | |
| 141 | */ | |
| 142 | static int fscache_stats_show(struct seq_file *m, void *v) | |
| 143 | { | |
| 144 | seq_puts(m, "FS-Cache statistics\n"); | |
| 145 | ||
| 146 | seq_printf(m, "Cookies: idx=%u dat=%u spc=%u\n", | |
| 147 | atomic_read(&fscache_n_cookie_index), | |
| 148 | atomic_read(&fscache_n_cookie_data), | |
| 149 | atomic_read(&fscache_n_cookie_special)); | |
| 150 | ||
| 151 | seq_printf(m, "Objects: alc=%u nal=%u avl=%u ded=%u\n", | |
| 152 | atomic_read(&fscache_n_object_alloc), | |
| 153 | atomic_read(&fscache_n_object_no_alloc), | |
| 154 | atomic_read(&fscache_n_object_avail), | |
| 155 | atomic_read(&fscache_n_object_dead)); | |
| 156 | seq_printf(m, "ChkAux : non=%u ok=%u upd=%u obs=%u\n", | |
| 157 | atomic_read(&fscache_n_checkaux_none), | |
| 158 | atomic_read(&fscache_n_checkaux_okay), | |
| 159 | atomic_read(&fscache_n_checkaux_update), | |
| 160 | atomic_read(&fscache_n_checkaux_obsolete)); | |
| 161 | ||
| 162 | seq_printf(m, "Pages : mrk=%u unc=%u\n", | |
| 163 | atomic_read(&fscache_n_marks), | |
| 164 | atomic_read(&fscache_n_uncaches)); | |
| 165 | ||
| 166 | seq_printf(m, "Acquire: n=%u nul=%u noc=%u ok=%u nbf=%u" | |
| 167 | " oom=%u\n", | |
| 168 | atomic_read(&fscache_n_acquires), | |
| 169 | atomic_read(&fscache_n_acquires_null), | |
| 170 | atomic_read(&fscache_n_acquires_no_cache), | |
| 171 | atomic_read(&fscache_n_acquires_ok), | |
| 172 | atomic_read(&fscache_n_acquires_nobufs), | |
| 173 | atomic_read(&fscache_n_acquires_oom)); | |
| 174 | ||
| fee096de | 175 | seq_printf(m, "Lookups: n=%u neg=%u pos=%u crt=%u tmo=%u\n", |
| 7394daa8 DH |
176 | atomic_read(&fscache_n_object_lookups), |
| 177 | atomic_read(&fscache_n_object_lookups_negative), | |
| 178 | atomic_read(&fscache_n_object_lookups_positive), | |
| cc4fc29e DH |
179 | atomic_read(&fscache_n_object_created), |
| 180 | atomic_read(&fscache_n_object_lookups_timed_out)); | |
| 7394daa8 | 181 | |
| ef778e7a DH |
182 | seq_printf(m, "Invals : n=%u run=%u\n", |
| 183 | atomic_read(&fscache_n_invalidates), | |
| 184 | atomic_read(&fscache_n_invalidates_run)); | |
| 185 | ||
| 7394daa8 DH |
186 | seq_printf(m, "Updates: n=%u nul=%u run=%u\n", |
| 187 | atomic_read(&fscache_n_updates), | |
| 188 | atomic_read(&fscache_n_updates_null), | |
| 189 | atomic_read(&fscache_n_updates_run)); | |
| 190 | ||
| 2175bb06 | 191 | seq_printf(m, "Relinqs: n=%u nul=%u wcr=%u rtr=%u\n", |
| 7394daa8 DH |
192 | atomic_read(&fscache_n_relinquishes), |
| 193 | atomic_read(&fscache_n_relinquishes_null), | |
| 2175bb06 DH |
194 | atomic_read(&fscache_n_relinquishes_waitcrt), |
| 195 | atomic_read(&fscache_n_relinquishes_retire)); | |
| 7394daa8 DH |
196 | |
| 197 | seq_printf(m, "AttrChg: n=%u ok=%u nbf=%u oom=%u run=%u\n", | |
| 198 | atomic_read(&fscache_n_attr_changed), | |
| 199 | atomic_read(&fscache_n_attr_changed_ok), | |
| 200 | atomic_read(&fscache_n_attr_changed_nobufs), | |
| 201 | atomic_read(&fscache_n_attr_changed_nomem), | |
| 202 | atomic_read(&fscache_n_attr_changed_calls)); | |
| 203 | ||
| 5753c441 | 204 | seq_printf(m, "Allocs : n=%u ok=%u wt=%u nbf=%u int=%u\n", |
| 7394daa8 DH |
205 | atomic_read(&fscache_n_allocs), |
| 206 | atomic_read(&fscache_n_allocs_ok), | |
| 207 | atomic_read(&fscache_n_allocs_wait), | |
| 5753c441 DH |
208 | atomic_read(&fscache_n_allocs_nobufs), |
| 209 | atomic_read(&fscache_n_allocs_intr)); | |
| 60d543ca | 210 | seq_printf(m, "Allocs : ops=%u owt=%u abt=%u\n", |
| 7394daa8 | 211 | atomic_read(&fscache_n_alloc_ops), |
| 60d543ca DH |
212 | atomic_read(&fscache_n_alloc_op_waits), |
| 213 | atomic_read(&fscache_n_allocs_object_dead)); | |
| 7394daa8 DH |
214 | |
| 215 | seq_printf(m, "Retrvls: n=%u ok=%u wt=%u nod=%u nbf=%u" | |
| 216 | " int=%u oom=%u\n", | |
| 217 | atomic_read(&fscache_n_retrievals), | |
| 218 | atomic_read(&fscache_n_retrievals_ok), | |
| 219 | atomic_read(&fscache_n_retrievals_wait), | |
| 220 | atomic_read(&fscache_n_retrievals_nodata), | |
| 221 | atomic_read(&fscache_n_retrievals_nobufs), | |
| 222 | atomic_read(&fscache_n_retrievals_intr), | |
| 223 | atomic_read(&fscache_n_retrievals_nomem)); | |
| 60d543ca | 224 | seq_printf(m, "Retrvls: ops=%u owt=%u abt=%u\n", |
| 7394daa8 | 225 | atomic_read(&fscache_n_retrieval_ops), |
| 60d543ca DH |
226 | atomic_read(&fscache_n_retrieval_op_waits), |
| 227 | atomic_read(&fscache_n_retrievals_object_dead)); | |
| 7394daa8 DH |
228 | |
| 229 | seq_printf(m, "Stores : n=%u ok=%u agn=%u nbf=%u oom=%u\n", | |
| 230 | atomic_read(&fscache_n_stores), | |
| 231 | atomic_read(&fscache_n_stores_ok), | |
| 232 | atomic_read(&fscache_n_stores_again), | |
| 233 | atomic_read(&fscache_n_stores_nobufs), | |
| 234 | atomic_read(&fscache_n_stores_oom)); | |
| 1bccf513 | 235 | seq_printf(m, "Stores : ops=%u run=%u pgs=%u rxd=%u olm=%u\n", |
| 7394daa8 | 236 | atomic_read(&fscache_n_store_ops), |
| 1bccf513 DH |
237 | atomic_read(&fscache_n_store_calls), |
| 238 | atomic_read(&fscache_n_store_pages), | |
| 239 | atomic_read(&fscache_n_store_radix_deletes), | |
| 240 | atomic_read(&fscache_n_store_pages_over_limit)); | |
| 7394daa8 | 241 | |
| 8c209ce7 | 242 | seq_printf(m, "VmScan : nos=%u gon=%u bsy=%u can=%u wt=%u\n", |
| 201a1542 DH |
243 | atomic_read(&fscache_n_store_vmscan_not_storing), |
| 244 | atomic_read(&fscache_n_store_vmscan_gone), | |
| 245 | atomic_read(&fscache_n_store_vmscan_busy), | |
| 8c209ce7 DH |
246 | atomic_read(&fscache_n_store_vmscan_cancelled), |
| 247 | atomic_read(&fscache_n_store_vmscan_wait)); | |
| 201a1542 | 248 | |
| e3d4d28b | 249 | seq_printf(m, "Ops : pend=%u run=%u enq=%u can=%u rej=%u\n", |
| 7394daa8 DH |
250 | atomic_read(&fscache_n_op_pend), |
| 251 | atomic_read(&fscache_n_op_run), | |
| 5753c441 | 252 | atomic_read(&fscache_n_op_enqueue), |
| e3d4d28b DH |
253 | atomic_read(&fscache_n_op_cancelled), |
| 254 | atomic_read(&fscache_n_op_rejected)); | |
| 03cdd0e4 DH |
255 | seq_printf(m, "Ops : ini=%u dfr=%u rel=%u gc=%u\n", |
| 256 | atomic_read(&fscache_n_op_initialised), | |
| 7394daa8 DH |
257 | atomic_read(&fscache_n_op_deferred_release), |
| 258 | atomic_read(&fscache_n_op_release), | |
| 259 | atomic_read(&fscache_n_op_gc)); | |
| 52bd75fd DH |
260 | |
| 261 | seq_printf(m, "CacheOp: alo=%d luo=%d luc=%d gro=%d\n", | |
| 262 | atomic_read(&fscache_n_cop_alloc_object), | |
| 263 | atomic_read(&fscache_n_cop_lookup_object), | |
| 264 | atomic_read(&fscache_n_cop_lookup_complete), | |
| 265 | atomic_read(&fscache_n_cop_grab_object)); | |
| ef778e7a DH |
266 | seq_printf(m, "CacheOp: inv=%d upo=%d dro=%d pto=%d atc=%d syn=%d\n", |
| 267 | atomic_read(&fscache_n_cop_invalidate_object), | |
| 52bd75fd DH |
268 | atomic_read(&fscache_n_cop_update_object), |
| 269 | atomic_read(&fscache_n_cop_drop_object), | |
| 270 | atomic_read(&fscache_n_cop_put_object), | |
| 271 | atomic_read(&fscache_n_cop_attr_changed), | |
| 272 | atomic_read(&fscache_n_cop_sync_cache)); | |
| 273 | seq_printf(m, "CacheOp: rap=%d ras=%d alp=%d als=%d wrp=%d ucp=%d dsp=%d\n", | |
| 274 | atomic_read(&fscache_n_cop_read_or_alloc_page), | |
| 275 | atomic_read(&fscache_n_cop_read_or_alloc_pages), | |
| 276 | atomic_read(&fscache_n_cop_allocate_page), | |
| 277 | atomic_read(&fscache_n_cop_allocate_pages), | |
| 278 | atomic_read(&fscache_n_cop_write_page), | |
| 279 | atomic_read(&fscache_n_cop_uncache_page), | |
| 280 | atomic_read(&fscache_n_cop_dissociate_pages)); | |
| 182d919b DH |
281 | seq_printf(m, "CacheEv: nsp=%d stl=%d rtr=%d cul=%d\n", |
| 282 | atomic_read(&fscache_n_cache_no_space_reject), | |
| 283 | atomic_read(&fscache_n_cache_stale_objects), | |
| 284 | atomic_read(&fscache_n_cache_retired_objects), | |
| 285 | atomic_read(&fscache_n_cache_culled_objects)); | |
| 7394daa8 DH |
286 | return 0; |
| 287 | } | |
| 288 | ||
| 289 | /* | |
| 290 | * open "/proc/fs/fscache/stats" allowing provision of a statistical summary | |
| 291 | */ | |
| 292 | static int fscache_stats_open(struct inode *inode, struct file *file) | |
| 293 | { | |
| 294 | return single_open(file, fscache_stats_show, NULL); | |
| 295 | } | |
| 296 | ||
| 297 | const struct file_operations fscache_stats_fops = { | |
| 7394daa8 DH |
298 | .open = fscache_stats_open, |
| 299 | .read = seq_read, | |
| 300 | .llseek = seq_lseek, | |
| ec686c92 | 301 | .release = single_release, |
| 7394daa8 | 302 | }; |