ceph/src/seastar/dpdk/examples/performance-thread/common/lthread_diag.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2015 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <rte_log.h>
  35 #include <rte_common.h>
  36
  37 #include "lthread_diag.h"
  38 #include "lthread_queue.h"
  39 #include "lthread_pool.h"
  40 #include "lthread_objcache.h"
  41 #include "lthread_sched.h"
  42 #include "lthread_diag_api.h"
  43
  44
  45 /* dummy ref value of default diagnostic callback */
  46 static uint64_t dummy_ref;
  47
  48 #define DIAG_SCHED_STATS_FORMAT \
  49 "core %d\n%33s %12s %12s %12s %12s\n"
  50
  51 #define DIAG_CACHE_STATS_FORMAT \
  52 "%20s %12lu %12lu %12lu %12lu %12lu\n"
  53
  54 #define DIAG_QUEUE_STATS_FORMAT \
  55 "%20s %12lu %12lu %12lu\n"
  56
  57
  58 /*
  59  * texts used in diagnostic events,
  60  * corresponding diagnostic mask bit positions are given as comment
  61  */
  62 const char *diag_event_text[] = {
  63         "LTHREAD_CREATE     ",  /* 00 */
  64         "LTHREAD_EXIT       ",  /* 01 */
  65         "LTHREAD_JOIN       ",  /* 02 */
  66         "LTHREAD_CANCEL     ",  /* 03 */
  67         "LTHREAD_DETACH     ",  /* 04 */
  68         "LTHREAD_FREE       ",  /* 05 */
  69         "LTHREAD_SUSPENDED  ",  /* 06 */
  70         "LTHREAD_YIELD      ",  /* 07 */
  71         "LTHREAD_RESCHEDULED",  /* 08 */
  72         "LTHREAD_SLEEP      ",  /* 09 */
  73         "LTHREAD_RESUMED    ",  /* 10 */
  74         "LTHREAD_AFFINITY   ",  /* 11 */
  75         "LTHREAD_TMR_START  ",  /* 12 */
  76         "LTHREAD_TMR_DELETE ",  /* 13 */
  77         "LTHREAD_TMR_EXPIRED",  /* 14 */
  78         "COND_CREATE        ",  /* 15 */
  79         "COND_DESTROY       ",  /* 16 */
  80         "COND_WAIT          ",  /* 17 */
  81         "COND_SIGNAL        ",  /* 18 */
  82         "COND_BROADCAST     ",  /* 19 */
  83         "MUTEX_CREATE       ",  /* 20 */
  84         "MUTEX_DESTROY      ",  /* 21 */
  85         "MUTEX_LOCK         ",  /* 22 */
  86         "MUTEX_TRYLOCK      ",  /* 23 */
  87         "MUTEX_BLOCKED      ",  /* 24 */
  88         "MUTEX_UNLOCKED     ",  /* 25 */
  89         "SCHED_CREATE       ",  /* 26 */
  90         "SCHED_SHUTDOWN     "   /* 27 */
  91 };
  92
  93
  94 /*
  95  * set diagnostic ,ask
  96  */
  97 void lthread_diagnostic_set_mask(DIAG_USED uint64_t mask)
  98 {
  99 #if LTHREAD_DIAG
 100         diag_mask = mask;
 101 #else
 102         RTE_LOG(INFO, LTHREAD,
 103                 "LTHREAD_DIAG is not set, see lthread_diag_api.h\n");
 104 #endif
 105 }
 106
 107
 108 /*
 109  * Check consistency of the scheduler stats
 110  * Only sensible run after the schedulers are stopped
 111  * Count the number of objects lying in caches and queues
 112  * and available in the qnode pool.
 113  * This should be equal to the total capacity of all
 114  * qnode pools.
 115  */
 116 void
 117 _sched_stats_consistency_check(void);
 118 void
 119 _sched_stats_consistency_check(void)
 120 {
 121 #if LTHREAD_DIAG
 122         int i;
 123         struct lthread_sched *sched;
 124         uint64_t count = 0;
 125         uint64_t capacity = 0;
 126
 127         for (i = 0; i < LTHREAD_MAX_LCORES; i++) {
 128                 sched = schedcore[i];
 129                 if (sched == NULL)
 130                         continue;
 131
 132                 /* each of these queues consumes a stub node */
 133                 count += 8;
 134                 count += DIAG_COUNT(sched->ready, size);
 135                 count += DIAG_COUNT(sched->pready, size);
 136                 count += DIAG_COUNT(sched->lthread_cache, available);
 137                 count += DIAG_COUNT(sched->stack_cache, available);
 138                 count += DIAG_COUNT(sched->tls_cache, available);
 139                 count += DIAG_COUNT(sched->per_lthread_cache, available);
 140                 count += DIAG_COUNT(sched->cond_cache, available);
 141                 count += DIAG_COUNT(sched->mutex_cache, available);
 142
 143                 /* the node pool does not consume a stub node */
 144                 if (sched->qnode_pool->fast_alloc != NULL)
 145                         count++;
 146                 count += DIAG_COUNT(sched->qnode_pool, available);
 147
 148                 capacity += DIAG_COUNT(sched->qnode_pool, capacity);
 149         }
 150         if (count != capacity) {
 151                 RTE_LOG(CRIT, LTHREAD,
 152                         "Scheduler caches are inconsistent\n");
 153         } else {
 154                 RTE_LOG(INFO, LTHREAD,
 155                         "Scheduler caches are ok\n");
 156         }
 157 #endif
 158 }
 159
 160
 161 #if LTHREAD_DIAG
 162 /*
 163  * Display node pool stats
 164  */
 165 static inline void
 166 _qnode_pool_display(DIAG_USED struct qnode_pool *p)
 167 {
 168
 169         printf(DIAG_CACHE_STATS_FORMAT,
 170                         p->name,
 171                         DIAG_COUNT(p, rd),
 172                         DIAG_COUNT(p, wr),
 173                         DIAG_COUNT(p, available),
 174                         DIAG_COUNT(p, prealloc),
 175                         DIAG_COUNT(p, capacity));
 176         fflush(stdout);
 177 }
 178 #endif
 179
 180
 181 #if LTHREAD_DIAG
 182 /*
 183  * Display queue stats
 184  */
 185 static inline void
 186 _lthread_queue_display(DIAG_USED struct lthread_queue *q)
 187 {
 188 #if DISPLAY_OBJCACHE_QUEUES
 189         printf(DIAG_QUEUE_STATS_FORMAT,
 190                         q->name,
 191                         DIAG_COUNT(q, rd),
 192                         DIAG_COUNT(q, wr),
 193                         DIAG_COUNT(q, size));
 194         fflush(stdout);
 195 #else
 196         printf("%s: queue stats disabled\n",
 197                         q->name);
 198
 199 #endif
 200 }
 201 #endif
 202
 203 #if LTHREAD_DIAG
 204 /*
 205  * Display objcache stats
 206  */
 207 static inline void
 208 _objcache_display(DIAG_USED struct lthread_objcache *c)
 209 {
 210
 211         printf(DIAG_CACHE_STATS_FORMAT,
 212                         c->name,
 213                         DIAG_COUNT(c, rd),
 214                         DIAG_COUNT(c, wr),
 215                         DIAG_COUNT(c, available),
 216                         DIAG_COUNT(c, prealloc),
 217                         DIAG_COUNT(c, capacity));
 218         _lthread_queue_display(c->q);
 219         fflush(stdout);
 220 }
 221 #endif
 222
 223 /*
 224  * Display sched stats
 225  */
 226 void
 227 lthread_sched_stats_display(void)
 228 {
 229 #if LTHREAD_DIAG
 230         int i;
 231         struct lthread_sched *sched;
 232
 233         for (i = 0; i < LTHREAD_MAX_LCORES; i++) {
 234                 sched = schedcore[i];
 235                 if (sched != NULL) {
 236                         printf(DIAG_SCHED_STATS_FORMAT,
 237                                         sched->lcore_id,
 238                                         "rd",
 239                                         "wr",
 240                                         "present",
 241                                         "nb preallocs",
 242                                         "capacity");
 243                         _lthread_queue_display(sched->ready);
 244                         _lthread_queue_display(sched->pready);
 245                         _qnode_pool_display(sched->qnode_pool);
 246                         _objcache_display(sched->lthread_cache);
 247                         _objcache_display(sched->stack_cache);
 248                         _objcache_display(sched->tls_cache);
 249                         _objcache_display(sched->per_lthread_cache);
 250                         _objcache_display(sched->cond_cache);
 251                         _objcache_display(sched->mutex_cache);
 252                 fflush(stdout);
 253                 }
 254         }
 255         _sched_stats_consistency_check();
 256 #else
 257         RTE_LOG(INFO, LTHREAD,
 258                 "lthread diagnostics disabled\n"
 259                 "hint - set LTHREAD_DIAG in lthread_diag_api.h\n");
 260 #endif
 261 }
 262
 263 /*
 264  * Defafult diagnostic callback
 265  */
 266 static uint64_t
 267 _lthread_diag_default_cb(uint64_t time, struct lthread *lt, int diag_event,
 268                 uint64_t diag_ref, const char *text, uint64_t p1, uint64_t p2)
 269 {
 270         uint64_t _p2;
 271         int lcore = (int) rte_lcore_id();
 272
 273         switch (diag_event) {
 274         case LT_DIAG_LTHREAD_CREATE:
 275         case LT_DIAG_MUTEX_CREATE:
 276         case LT_DIAG_COND_CREATE:
 277                 _p2 = dummy_ref;
 278                 break;
 279         default:
 280                 _p2 = p2;
 281                 break;
 282         }
 283
 284         printf("%"PRIu64" %d %8.8lx %8.8lx %s %8.8lx %8.8lx\n",
 285                 time,
 286                 lcore,
 287                 (uint64_t) lt,
 288                 diag_ref,
 289                 text,
 290                 p1,
 291                 _p2);
 292
 293         return dummy_ref++;
 294 }
 295
 296 /*
 297  * plug in default diag callback with mask off
 298  */
 299 void _lthread_diag_ctor(void)__attribute__((constructor));
 300 void _lthread_diag_ctor(void)
 301 {
 302         diag_cb = _lthread_diag_default_cb;
 303         diag_mask = 0;
 304 }
 305
 306
 307 /*
 308  * enable diagnostics
 309  */
 310 void lthread_diagnostic_enable(DIAG_USED diag_callback cb,
 311                                 DIAG_USED uint64_t mask)
 312 {
 313 #if LTHREAD_DIAG
 314         if (cb == NULL)
 315                 diag_cb = _lthread_diag_default_cb;
 316         else
 317                 diag_cb = cb;
 318         diag_mask = mask;
 319 #else
 320         RTE_LOG(INFO, LTHREAD,
 321                 "LTHREAD_DIAG is not set, see lthread_diag_api.h\n");
 322 #endif
 323 }