include/trace/events/kmem.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #undef TRACE_SYSTEM
   3 #define TRACE_SYSTEM kmem
   4
   5 #if !defined(_TRACE_KMEM_H) || defined(TRACE_HEADER_MULTI_READ)
   6 #define _TRACE_KMEM_H
   7
   8 #include <linux/types.h>
   9 #include <linux/tracepoint.h>
  10 #include <trace/events/mmflags.h>
  11
  12 TRACE_EVENT(kmem_cache_alloc,
  13
  14         TP_PROTO(unsigned long call_site,
  15                  const void *ptr,
  16                  struct kmem_cache *s,
  17                  gfp_t gfp_flags,
  18                  int node),
  19
  20         TP_ARGS(call_site, ptr, s, gfp_flags, node),
  21
  22         TP_STRUCT__entry(
  23                 __field(        unsigned long,  call_site       )
  24                 __field(        const void *,   ptr             )
  25                 __field(        size_t,         bytes_req       )
  26                 __field(        size_t,         bytes_alloc     )
  27                 __field(        unsigned long,  gfp_flags       )
  28                 __field(        int,            node            )
  29                 __field(        bool,           accounted       )
  30         ),
  31
  32         TP_fast_assign(
  33                 __entry->call_site      = call_site;
  34                 __entry->ptr            = ptr;
  35                 __entry->bytes_req      = s->object_size;
  36                 __entry->bytes_alloc    = s->size;
  37                 __entry->gfp_flags      = (__force unsigned long)gfp_flags;
  38                 __entry->node           = node;
  39                 __entry->accounted      = IS_ENABLED(CONFIG_MEMCG_KMEM) ?
  40                                           ((gfp_flags & __GFP_ACCOUNT) ||
  41                                           (s->flags & SLAB_ACCOUNT)) : false;
  42         ),
  43
  44         TP_printk("call_site=%pS ptr=%p bytes_req=%zu bytes_alloc=%zu gfp_flags=%s node=%d accounted=%s",
  45                 (void *)__entry->call_site,
  46                 __entry->ptr,
  47                 __entry->bytes_req,
  48                 __entry->bytes_alloc,
  49                 show_gfp_flags(__entry->gfp_flags),
  50                 __entry->node,
  51                 __entry->accounted ? "true" : "false")
  52 );
  53
  54 TRACE_EVENT(kmalloc,
  55
  56         TP_PROTO(unsigned long call_site,
  57                  const void *ptr,
  58                  size_t bytes_req,
  59                  size_t bytes_alloc,
  60                  gfp_t gfp_flags,
  61                  int node),
  62
  63         TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags, node),
  64
  65         TP_STRUCT__entry(
  66                 __field(        unsigned long,  call_site       )
  67                 __field(        const void *,   ptr             )
  68                 __field(        size_t,         bytes_req       )
  69                 __field(        size_t,         bytes_alloc     )
  70                 __field(        unsigned long,  gfp_flags       )
  71                 __field(        int,            node            )
  72         ),
  73
  74         TP_fast_assign(
  75                 __entry->call_site      = call_site;
  76                 __entry->ptr            = ptr;
  77                 __entry->bytes_req      = bytes_req;
  78                 __entry->bytes_alloc    = bytes_alloc;
  79                 __entry->gfp_flags      = (__force unsigned long)gfp_flags;
  80                 __entry->node           = node;
  81         ),
  82
  83         TP_printk("call_site=%pS ptr=%p bytes_req=%zu bytes_alloc=%zu gfp_flags=%s node=%d accounted=%s",
  84                 (void *)__entry->call_site,
  85                 __entry->ptr,
  86                 __entry->bytes_req,
  87                 __entry->bytes_alloc,
  88                 show_gfp_flags(__entry->gfp_flags),
  89                 __entry->node,
  90                 (IS_ENABLED(CONFIG_MEMCG_KMEM) &&
  91                  (__entry->gfp_flags & (__force unsigned long)__GFP_ACCOUNT)) ? "true" : "false")
  92 );
  93
  94 TRACE_EVENT(kfree,
  95
  96         TP_PROTO(unsigned long call_site, const void *ptr),
  97
  98         TP_ARGS(call_site, ptr),
  99
 100         TP_STRUCT__entry(
 101                 __field(        unsigned long,  call_site       )
 102                 __field(        const void *,   ptr             )
 103         ),
 104
 105         TP_fast_assign(
 106                 __entry->call_site      = call_site;
 107                 __entry->ptr            = ptr;
 108         ),
 109
 110         TP_printk("call_site=%pS ptr=%p",
 111                   (void *)__entry->call_site, __entry->ptr)
 112 );
 113
 114 TRACE_EVENT(kmem_cache_free,
 115
 116         TP_PROTO(unsigned long call_site, const void *ptr, const struct kmem_cache *s),
 117
 118         TP_ARGS(call_site, ptr, s),
 119
 120         TP_STRUCT__entry(
 121                 __field(        unsigned long,  call_site       )
 122                 __field(        const void *,   ptr             )
 123                 __string(       name,           s->name         )
 124         ),
 125
 126         TP_fast_assign(
 127                 __entry->call_site      = call_site;
 128                 __entry->ptr            = ptr;
 129                 __assign_str(name, s->name);
 130         ),
 131
 132         TP_printk("call_site=%pS ptr=%p name=%s",
 133                   (void *)__entry->call_site, __entry->ptr, __get_str(name))
 134 );
 135
 136 TRACE_EVENT(mm_page_free,
 137
 138         TP_PROTO(struct page *page, unsigned int order),
 139
 140         TP_ARGS(page, order),
 141
 142         TP_STRUCT__entry(
 143                 __field(        unsigned long,  pfn             )
 144                 __field(        unsigned int,   order           )
 145         ),
 146
 147         TP_fast_assign(
 148                 __entry->pfn            = page_to_pfn(page);
 149                 __entry->order          = order;
 150         ),
 151
 152         TP_printk("page=%p pfn=0x%lx order=%d",
 153                         pfn_to_page(__entry->pfn),
 154                         __entry->pfn,
 155                         __entry->order)
 156 );
 157
 158 TRACE_EVENT(mm_page_free_batched,
 159
 160         TP_PROTO(struct page *page),
 161
 162         TP_ARGS(page),
 163
 164         TP_STRUCT__entry(
 165                 __field(        unsigned long,  pfn             )
 166         ),
 167
 168         TP_fast_assign(
 169                 __entry->pfn            = page_to_pfn(page);
 170         ),
 171
 172         TP_printk("page=%p pfn=0x%lx order=0",
 173                         pfn_to_page(__entry->pfn),
 174                         __entry->pfn)
 175 );
 176
 177 TRACE_EVENT(mm_page_alloc,
 178
 179         TP_PROTO(struct page *page, unsigned int order,
 180                         gfp_t gfp_flags, int migratetype),
 181
 182         TP_ARGS(page, order, gfp_flags, migratetype),
 183
 184         TP_STRUCT__entry(
 185                 __field(        unsigned long,  pfn             )
 186                 __field(        unsigned int,   order           )
 187                 __field(        unsigned long,  gfp_flags       )
 188                 __field(        int,            migratetype     )
 189         ),
 190
 191         TP_fast_assign(
 192                 __entry->pfn            = page ? page_to_pfn(page) : -1UL;
 193                 __entry->order          = order;
 194                 __entry->gfp_flags      = (__force unsigned long)gfp_flags;
 195                 __entry->migratetype    = migratetype;
 196         ),
 197
 198         TP_printk("page=%p pfn=0x%lx order=%d migratetype=%d gfp_flags=%s",
 199                 __entry->pfn != -1UL ? pfn_to_page(__entry->pfn) : NULL,
 200                 __entry->pfn != -1UL ? __entry->pfn : 0,
 201                 __entry->order,
 202                 __entry->migratetype,
 203                 show_gfp_flags(__entry->gfp_flags))
 204 );
 205
 206 DECLARE_EVENT_CLASS(mm_page,
 207
 208         TP_PROTO(struct page *page, unsigned int order, int migratetype,
 209                  int percpu_refill),
 210
 211         TP_ARGS(page, order, migratetype, percpu_refill),
 212
 213         TP_STRUCT__entry(
 214                 __field(        unsigned long,  pfn             )
 215                 __field(        unsigned int,   order           )
 216                 __field(        int,            migratetype     )
 217                 __field(        int,            percpu_refill   )
 218         ),
 219
 220         TP_fast_assign(
 221                 __entry->pfn            = page ? page_to_pfn(page) : -1UL;
 222                 __entry->order          = order;
 223                 __entry->migratetype    = migratetype;
 224                 __entry->percpu_refill  = percpu_refill;
 225         ),
 226
 227         TP_printk("page=%p pfn=0x%lx order=%u migratetype=%d percpu_refill=%d",
 228                 __entry->pfn != -1UL ? pfn_to_page(__entry->pfn) : NULL,
 229                 __entry->pfn != -1UL ? __entry->pfn : 0,
 230                 __entry->order,
 231                 __entry->migratetype,
 232                 __entry->percpu_refill)
 233 );
 234
 235 DEFINE_EVENT(mm_page, mm_page_alloc_zone_locked,
 236
 237         TP_PROTO(struct page *page, unsigned int order, int migratetype,
 238                  int percpu_refill),
 239
 240         TP_ARGS(page, order, migratetype, percpu_refill)
 241 );
 242
 243 TRACE_EVENT(mm_page_pcpu_drain,
 244
 245         TP_PROTO(struct page *page, unsigned int order, int migratetype),
 246
 247         TP_ARGS(page, order, migratetype),
 248
 249         TP_STRUCT__entry(
 250                 __field(        unsigned long,  pfn             )
 251                 __field(        unsigned int,   order           )
 252                 __field(        int,            migratetype     )
 253         ),
 254
 255         TP_fast_assign(
 256                 __entry->pfn            = page ? page_to_pfn(page) : -1UL;
 257                 __entry->order          = order;
 258                 __entry->migratetype    = migratetype;
 259         ),
 260
 261         TP_printk("page=%p pfn=0x%lx order=%d migratetype=%d",
 262                 pfn_to_page(__entry->pfn), __entry->pfn,
 263                 __entry->order, __entry->migratetype)
 264 );
 265
 266 TRACE_EVENT(mm_page_alloc_extfrag,
 267
 268         TP_PROTO(struct page *page,
 269                 int alloc_order, int fallback_order,
 270                 int alloc_migratetype, int fallback_migratetype),
 271
 272         TP_ARGS(page,
 273                 alloc_order, fallback_order,
 274                 alloc_migratetype, fallback_migratetype),
 275
 276         TP_STRUCT__entry(
 277                 __field(        unsigned long,  pfn                     )
 278                 __field(        int,            alloc_order             )
 279                 __field(        int,            fallback_order          )
 280                 __field(        int,            alloc_migratetype       )
 281                 __field(        int,            fallback_migratetype    )
 282                 __field(        int,            change_ownership        )
 283         ),
 284
 285         TP_fast_assign(
 286                 __entry->pfn                    = page_to_pfn(page);
 287                 __entry->alloc_order            = alloc_order;
 288                 __entry->fallback_order         = fallback_order;
 289                 __entry->alloc_migratetype      = alloc_migratetype;
 290                 __entry->fallback_migratetype   = fallback_migratetype;
 291                 __entry->change_ownership       = (alloc_migratetype ==
 292                                         get_pageblock_migratetype(page));
 293         ),
 294
 295         TP_printk("page=%p pfn=0x%lx alloc_order=%d fallback_order=%d pageblock_order=%d alloc_migratetype=%d fallback_migratetype=%d fragmenting=%d change_ownership=%d",
 296                 pfn_to_page(__entry->pfn),
 297                 __entry->pfn,
 298                 __entry->alloc_order,
 299                 __entry->fallback_order,
 300                 pageblock_order,
 301                 __entry->alloc_migratetype,
 302                 __entry->fallback_migratetype,
 303                 __entry->fallback_order < pageblock_order,
 304                 __entry->change_ownership)
 305 );
 306
 307 /*
 308  * Required for uniquely and securely identifying mm in rss_stat tracepoint.
 309  */
 310 #ifndef __PTR_TO_HASHVAL
 311 static unsigned int __maybe_unused mm_ptr_to_hash(const void *ptr)
 312 {
 313         int ret;
 314         unsigned long hashval;
 315
 316         ret = ptr_to_hashval(ptr, &hashval);
 317         if (ret)
 318                 return 0;
 319
 320         /* The hashed value is only 32-bit */
 321         return (unsigned int)hashval;
 322 }
 323 #define __PTR_TO_HASHVAL
 324 #endif
 325
 326 #define TRACE_MM_PAGES          \
 327         EM(MM_FILEPAGES)        \
 328         EM(MM_ANONPAGES)        \
 329         EM(MM_SWAPENTS)         \
 330         EMe(MM_SHMEMPAGES)
 331
 332 #undef EM
 333 #undef EMe
 334
 335 #define EM(a)   TRACE_DEFINE_ENUM(a);
 336 #define EMe(a)  TRACE_DEFINE_ENUM(a);
 337
 338 TRACE_MM_PAGES
 339
 340 #undef EM
 341 #undef EMe
 342
 343 #define EM(a)   { a, #a },
 344 #define EMe(a)  { a, #a }
 345
 346 TRACE_EVENT(rss_stat,
 347
 348         TP_PROTO(struct mm_struct *mm,
 349                 int member),
 350
 351         TP_ARGS(mm, member),
 352
 353         TP_STRUCT__entry(
 354                 __field(unsigned int, mm_id)
 355                 __field(unsigned int, curr)
 356                 __field(int, member)
 357                 __field(long, size)
 358         ),
 359
 360         TP_fast_assign(
 361                 __entry->mm_id = mm_ptr_to_hash(mm);
 362                 __entry->curr = !!(current->mm == mm);
 363                 __entry->member = member;
 364                 __entry->size = (percpu_counter_sum_positive(&mm->rss_stat[member])
 365                                                             << PAGE_SHIFT);
 366         ),
 367
 368         TP_printk("mm_id=%u curr=%d type=%s size=%ldB",
 369                 __entry->mm_id,
 370                 __entry->curr,
 371                 __print_symbolic(__entry->member, TRACE_MM_PAGES),
 372                 __entry->size)
 373         );
 374 #endif /* _TRACE_KMEM_H */
 375
 376 /* This part must be outside protection */
 377 #include <trace/define_trace.h>