diff options
| -rw-r--r-- | include/linux/slab.h | 102 |
1 files changed, 46 insertions, 56 deletions
diff --git a/include/linux/slab.h b/include/linux/slab.h index c2bba248fa63..1e2f4fe12773 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h | |||
| @@ -388,10 +388,55 @@ static __always_inline void *kmalloc_large(size_t size, gfp_t flags) | |||
| 388 | /** | 388 | /** |
| 389 | * kmalloc - allocate memory | 389 | * kmalloc - allocate memory |
| 390 | * @size: how many bytes of memory are required. | 390 | * @size: how many bytes of memory are required. |
| 391 | * @flags: the type of memory to allocate (see kcalloc). | 391 | * @flags: the type of memory to allocate. |
| 392 | * | 392 | * |
| 393 | * kmalloc is the normal method of allocating memory | 393 | * kmalloc is the normal method of allocating memory |
| 394 | * for objects smaller than page size in the kernel. | 394 | * for objects smaller than page size in the kernel. |
| 395 | * | ||
| 396 | * The @flags argument may be one of: | ||
| 397 | * | ||
| 398 | * %GFP_USER - Allocate memory on behalf of user. May sleep. | ||
| 399 | * | ||
| 400 | * %GFP_KERNEL - Allocate normal kernel ram. May sleep. | ||
| 401 | * | ||
| 402 | * %GFP_ATOMIC - Allocation will not sleep. May use emergency pools. | ||
| 403 | * For example, use this inside interrupt handlers. | ||
| 404 | * | ||
| 405 | * %GFP_HIGHUSER - Allocate pages from high memory. | ||
| 406 | * | ||
| 407 | * %GFP_NOIO - Do not do any I/O at all while trying to get memory. | ||
| 408 | * | ||
| 409 | * %GFP_NOFS - Do not make any fs calls while trying to get memory. | ||
| 410 | * | ||
| 411 | * %GFP_NOWAIT - Allocation will not sleep. | ||
| 412 | * | ||
| 413 | * %GFP_THISNODE - Allocate node-local memory only. | ||
| 414 | * | ||
| 415 | * %GFP_DMA - Allocation suitable for DMA. | ||
| 416 | * Should only be used for kmalloc() caches. Otherwise, use a | ||
| 417 | * slab created with SLAB_DMA. | ||
| 418 | * | ||
| 419 | * Also it is possible to set different flags by OR'ing | ||
| 420 | * in one or more of the following additional @flags: | ||
| 421 | * | ||
| 422 | * %__GFP_COLD - Request cache-cold pages instead of | ||
| 423 | * trying to return cache-warm pages. | ||
| 424 | * | ||
| 425 | * %__GFP_HIGH - This allocation has high priority and may use emergency pools. | ||
| 426 | * | ||
| 427 | * %__GFP_NOFAIL - Indicate that this allocation is in no way allowed to fail | ||
| 428 | * (think twice before using). | ||
| 429 | * | ||
| 430 | * %__GFP_NORETRY - If memory is not immediately available, | ||
| 431 | * then give up at once. | ||
| 432 | * | ||
| 433 | * %__GFP_NOWARN - If allocation fails, don't issue any warnings. | ||
| 434 | * | ||
| 435 | * %__GFP_REPEAT - If allocation fails initially, try once more before failing. | ||
| 436 | * | ||
| 437 | * There are other flags available as well, but these are not intended | ||
| 438 | * for general use, and so are not documented here. For a full list of | ||
| 439 | * potential flags, always refer to linux/gfp.h. | ||
| 395 | */ | 440 | */ |
| 396 | static __always_inline void *kmalloc(size_t size, gfp_t flags) | 441 | static __always_inline void *kmalloc(size_t size, gfp_t flags) |
| 397 | { | 442 | { |
| @@ -502,61 +547,6 @@ int cache_show(struct kmem_cache *s, struct seq_file *m); | |||
| 502 | void print_slabinfo_header(struct seq_file *m); | 547 | void print_slabinfo_header(struct seq_file *m); |
| 503 | 548 | ||
| 504 | /** | 549 | /** |
| 505 | * kmalloc - allocate memory | ||
| 506 | * @size: how many bytes of memory are required. | ||
| 507 | * @flags: the type of memory to allocate. | ||
| 508 | * | ||
| 509 | * The @flags argument may be one of: | ||
| 510 | * | ||
| 511 | * %GFP_USER - Allocate memory on behalf of user. May sleep. | ||
| 512 | * | ||
| 513 | * %GFP_KERNEL - Allocate normal kernel ram. May sleep. | ||
| 514 | * | ||
| 515 | * %GFP_ATOMIC - Allocation will not sleep. May use emergency pools. | ||
| 516 | * For example, use this inside interrupt handlers. | ||
| 517 | * | ||
| 518 | * %GFP_HIGHUSER - Allocate pages from high memory. | ||
| 519 | * | ||
| 520 | * %GFP_NOIO - Do not do any I/O at all while trying to get memory. | ||
| 521 | * | ||
| 522 | * %GFP_NOFS - Do not make any fs calls while trying to get memory. | ||
| 523 | * | ||
| 524 | * %GFP_NOWAIT - Allocation will not sleep. | ||
| 525 | * | ||
| 526 | * %GFP_THISNODE - Allocate node-local memory only. | ||
| 527 | * | ||
| 528 | * %GFP_DMA - Allocation suitable for DMA. | ||
| 529 | * Should only be used for kmalloc() caches. Otherwise, use a | ||
| 530 | * slab created with SLAB_DMA. | ||
| 531 | * | ||
| 532 | * Also it is possible to set different flags by OR'ing | ||
| 533 | * in one or more of the following additional @flags: | ||
| 534 | * | ||
| 535 | * %__GFP_COLD - Request cache-cold pages instead of | ||
| 536 | * trying to return cache-warm pages. | ||
| 537 | * | ||
| 538 | * %__GFP_HIGH - This allocation has high priority and may use emergency pools. | ||
| 539 | * | ||
| 540 | * %__GFP_NOFAIL - Indicate that this allocation is in no way allowed to fail | ||
| 541 | * (think twice before using). | ||
| 542 | * | ||
| 543 | * %__GFP_NORETRY - If memory is not immediately available, | ||
| 544 | * then give up at once. | ||
| 545 | * | ||
| 546 | * %__GFP_NOWARN - If allocation fails, don't issue any warnings. | ||
| 547 | * | ||
| 548 | * %__GFP_REPEAT - If allocation fails initially, try once more before failing. | ||
| 549 | * | ||
| 550 | * There are other flags available as well, but these are not intended | ||
| 551 | * for general use, and so are not documented here. For a full list of | ||
| 552 | * potential flags, always refer to linux/gfp.h. | ||
| 553 | * | ||
| 554 | * kmalloc is the normal method of allocating memory | ||
| 555 | * in the kernel. | ||
| 556 | */ | ||
| 557 | static __always_inline void *kmalloc(size_t size, gfp_t flags); | ||
| 558 | |||
| 559 | /** | ||
| 560 | * kmalloc_array - allocate memory for an array. | 550 | * kmalloc_array - allocate memory for an array. |
| 561 | * @n: number of elements. | 551 | * @n: number of elements. |
| 562 | * @size: element size. | 552 | * @size: element size. |
