| /kernel/linux/linux-5.10/block/ |
| D | blk-mq-tag.c | 4 * fairer distribution of tags between multiple submitters when a shared tag map
36 atomic_inc(&hctx->tags->active_queues); in __blk_mq_tag_busy()
43 * Wakeup all potentially sleeping on tags
45 void blk_mq_tag_wakeup_all(struct blk_mq_tags *tags, bool include_reserve) in blk_mq_tag_wakeup_all() argument
47 sbitmap_queue_wake_all(tags->bitmap_tags); in blk_mq_tag_wakeup_all()
49 sbitmap_queue_wake_all(tags->breserved_tags); in blk_mq_tag_wakeup_all()
58 struct blk_mq_tags *tags = hctx->tags; in __blk_mq_tag_idle() local
70 atomic_dec(&tags->active_queues); in __blk_mq_tag_idle()
73 blk_mq_tag_wakeup_all(tags, false); in __blk_mq_tag_idle()
91 struct blk_mq_tags *tags = blk_mq_tags_from_data(data); in blk_mq_get_tag() local
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| D | blk-mq-tag.h | 34 extern void blk_mq_free_tags(struct blk_mq_tags *tags, unsigned int flags);
41 extern void blk_mq_put_tag(struct blk_mq_tags *tags, struct blk_mq_ctx *ctx,
44 struct blk_mq_tags **tags,
49 extern void blk_mq_tag_wakeup_all(struct blk_mq_tags *tags, bool);
52 void blk_mq_all_tag_iter(struct blk_mq_tags *tags, busy_tag_iter_fn *fn,
88 static inline bool blk_mq_tag_is_reserved(struct blk_mq_tags *tags, in blk_mq_tag_is_reserved() argument
91 return tag < tags->nr_reserved_tags; in blk_mq_tag_is_reserved()
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| D | blk-mq.c | 280 blk_mq_tag_wakeup_all(hctx->tags, true); in blk_mq_wake_waiters()
295 struct blk_mq_tags *tags = blk_mq_tags_from_data(data); in blk_mq_rq_ctx_init() local
296 struct request *rq = tags->static_rqs[tag]; in blk_mq_rq_ctx_init()
380 * dispatch list. Don't include reserved tags in the in __blk_mq_alloc_request()
516 blk_mq_put_tag(hctx->tags, ctx, rq->tag); in __blk_mq_free_request()
876 struct request *blk_mq_tag_to_rq(struct blk_mq_tags *tags, unsigned int tag) in blk_mq_tag_to_rq() argument
878 if (tag < tags->nr_tags) { in blk_mq_tag_to_rq()
879 prefetch(tags->rqs[tag]); in blk_mq_tag_to_rq()
880 return tags->rqs[tag]; in blk_mq_tag_to_rq()
1101 struct sbitmap_queue *bt = rq->mq_hctx->tags->bitmap_tags; in __blk_mq_get_driver_tag()
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| /kernel/linux/linux-5.10/drivers/gpu/drm/nouveau/nvkm/core/ |
| D | memory.c | 34 struct nvkm_tags *tags = *ptags; in nvkm_memory_tags_put() local
35 if (tags) { in nvkm_memory_tags_put()
37 if (refcount_dec_and_test(&tags->refcount)) { in nvkm_memory_tags_put()
38 nvkm_mm_free(&fb->tags, &tags->mn); in nvkm_memory_tags_put()
39 kfree(memory->tags); in nvkm_memory_tags_put()
40 memory->tags = NULL; in nvkm_memory_tags_put()
53 struct nvkm_tags *tags; in nvkm_memory_tags_get() local
56 if ((tags = memory->tags)) { in nvkm_memory_tags_get()
61 if (tags->mn && tags->mn->length != nr) { in nvkm_memory_tags_get()
66 refcount_inc(&tags->refcount); in nvkm_memory_tags_get()
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| /kernel/linux/linux-5.10/fs/erofs/ |
| D | tagptr.h | 29 extern void __compiletime_error("bad tagptr tags")
59 const typeof(_tags) tags = (_tags); \
60 if (__builtin_constant_p(tags) && (tags & ~__tagptr_mask(type))) \
62 tagptr_init(type, (uintptr_t)(ptr) | tags); })
88 #define tagptr_replace_tags(_ptptr, tags) ({ \ argument
90 *ptptr = tagptr_fold(*ptptr, tagptr_unfold_ptr(*ptptr), tags); \
95 const typeof(_tags) tags = (_tags); \
96 if (__builtin_constant_p(tags) && (tags & ~__tagptr_mask(*ptptr))) \
98 ptptr->v |= tags; \
103 const typeof(_tags) tags = (_tags); \
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| /kernel/linux/linux-5.10/arch/arm64/mm/ |
| D | mteswap.c | 14 /* tags granule is 16 bytes, 2 tags stored per byte */ in mte_allocate_tag_storage()
38 if (WARN(xa_is_err(ret), "Failed to store MTE tags")) { in mte_save_tags()
51 void *tags = xa_load(&mte_pages, entry.val); in mte_restore_tags() local
53 if (!tags) in mte_restore_tags()
56 mte_restore_page_tags(page_address(page), tags); in mte_restore_tags()
64 void *tags = xa_erase(&mte_pages, entry.val); in mte_invalidate_tags() local
66 mte_free_tag_storage(tags); in mte_invalidate_tags()
73 void *tags; in mte_invalidate_tags_area() local
78 xas_for_each(&xa_state, tags, last_entry.val - 1) { in mte_invalidate_tags_area()
80 mte_free_tag_storage(tags); in mte_invalidate_tags_area()
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| /kernel/linux/linux-5.10/arch/arm64/lib/ |
| D | mte.S | 27 * Clear the tags in a page
40 * Copy the tags from the source page to the destination one
58 * Read tags from a user buffer (one tag per byte) and set the corresponding
59 * tags at the given kernel address. Used by PTRACE_POKEMTETAGS.
62 * x2 - number of tags/bytes (n)
64 * x0 - number of tags read/set
78 2: sub x0, x1, x3 // update the number of tags set
83 * Get the tags from a kernel address range and write the tag values to the
87 * x2 - number of tags/bytes (n)
89 * x0 - number of tags read/set
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| /kernel/linux/linux-5.10/arch/arm64/kernel/ |
| D | mte.c | 43 /* if PG_mte_tagged is set, tags have already been initialised */ in mte_sync_tags()
49 /* ensure the tags are visible before the PTE is set */ in mte_sync_tags()
68 * pages is tagged, set_pte_at() may zero or change the tags of the in memcmp_pages()
209 * Access MTE tags in another process' address space as given in mm. Update
210 * the number of tags copied. Return 0 if any tags copied, error otherwise.
229 unsigned long tags, offset; in __access_remote_tags() local
239 * Only copy tags if the page has been mapped as PROT_MTE in __access_remote_tags()
240 * (PG_mte_tagged set). Otherwise the tags are not valid and in __access_remote_tags()
242 * would cause the existing tags to be cleared if the page in __access_remote_tags()
254 tags = min(len, (PAGE_SIZE - offset) / MTE_GRANULE_SIZE); in __access_remote_tags()
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| /kernel/linux/linux-5.10/Documentation/arm64/ |
| D | memory-tagging-extension.rst | 36 To access the allocation tags, a user process must enable the Tagged
40 ``PROT_MTE`` - Pages allow access to the MTE allocation tags.
44 supported and the allocation tags can be shared between processes.
55 ``MADV_FREE`` may have the allocation tags cleared (set to 0) at any
62 the logical and allocation tags occurs on access, there are three
98 **Note**: There are no *match-all* logical tags available for user
109 Excluding Tags in the ``IRG``, ``ADDG`` and ``SUBG`` instructions
112 The architecture allows excluding certain tags to be randomly generated
114 excludes all tags other than 0. A user thread can enable specific tags
116 flags, 0, 0, 0)`` system call where ``flags`` contains the tags bitmap
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| D | tagged-pointers.rst | 38 Using non-zero address tags in any of these locations when the
44 passing non-zero address tags to the kernel via system calls is
49 address tags may suffer impaired or inaccurate debug and profiling
53 Preserving tags
56 Non-zero tags are not preserved when delivering signals. This means that
57 signal handlers in applications making use of tags cannot rely on the
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| /kernel/linux/linux-5.10/arch/arm/kernel/ |
| D | atags_parse.c | 11 * of variable-sized tags to the kernel. The first tag must be a ATAG_CORE
158 * Parse all tags in the list, checking both the global and architecture
179 struct tag *tags = (struct tag *)&default_tags; in setup_machine_tags() local
199 tags = atags_vaddr; in setup_machine_tags()
201 tags = (void *)(PAGE_OFFSET + mdesc->atag_offset); in setup_machine_tags()
208 if (tags->hdr.tag != ATAG_CORE) in setup_machine_tags()
209 convert_to_tag_list(tags); in setup_machine_tags()
211 if (tags->hdr.tag != ATAG_CORE) { in setup_machine_tags()
213 tags = (struct tag *)&default_tags; in setup_machine_tags()
217 mdesc->fixup(tags, &from); in setup_machine_tags()
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| /kernel/linux/linux-5.10/arch/sparc/kernel/ |
| D | adi_64.c | 17 /* Each page of storage for ADI tags can accommodate tags for 128
21 * store tags for four SWAPFILE_CLUSTER pages to reduce need for
100 /* Some of the code to support swapping ADI tags is written in mdesc_adi_init()
101 * assumption that two ADI tags can fit inside one byte. If in mdesc_adi_init()
160 unsigned char *tags; in alloc_tag_store() local
231 * store tags for as many pages in this vma as possible but not in alloc_tag_store()
233 * two ADI tags since each ADI tag is 4 bits. Each ADI tag in alloc_tag_store()
261 * only one page for storing ADI tags in alloc_tag_store()
284 tags = kzalloc(size, GFP_NOWAIT|__GFP_NOWARN); in alloc_tag_store()
285 if (tags == NULL) { in alloc_tag_store()
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| /kernel/linux/linux-5.10/Documentation/sparc/ |
| D | adi.rst | 6 ADI allows a task to set version tags on any subset of its address
7 space. Once ADI is enabled and version tags are set for ranges of
26 be repeated for entire page to set tags for entire page.
34 SPARC M7 processor, MMU uses bits 63-60 for version tags and ADI block
41 kernel sets the PSTATE.mcde bit fot the task. Version tags for memory
61 - Version tags are set on virtual addresses from userspace even though
62 tags are stored in physical memory. Tags are set on a physical page
66 - When a task frees a memory page it had set version tags on, the page
69 version tags as well for the page. If a page allocated to a task is
70 freed and allocated back to the same task, old version tags set by the
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| /kernel/linux/linux-5.10/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ |
| D | nv20.c | 47 u32 tags = round_up(tiles / fb->ram->parts, 0x40); in nv20_fb_tile_comp() local
48 if (!nvkm_mm_head(&fb->tags, 0, 1, tags, tags, 1, &tile->tag)) { in nv20_fb_tile_comp()
66 nvkm_mm_free(&fb->tags, &tile->tag); in nv20_fb_tile_fini()
83 const u32 tags = nvkm_rd32(fb->subdev.device, 0x100320); in nv20_fb_tags() local
84 return tags ? tags + 1 : 0; in nv20_fb_tags()
89 .tags = nv20_fb_tags,
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| D | nv36.c | 34 u32 tags = round_up(tiles / fb->ram->parts, 0x40); in nv36_fb_tile_comp() local
35 if (!nvkm_mm_head(&fb->tags, 0, 1, tags, tags, 1, &tile->tag)) { in nv36_fb_tile_comp()
39 tile->zcomp |= ((tile->tag->offset + tags - 1) >> 6) << 14; in nv36_fb_tile_comp()
48 .tags = nv20_fb_tags,
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| D | nv35.c | 34 u32 tags = round_up(tiles / fb->ram->parts, 0x40); in nv35_fb_tile_comp() local
35 if (!nvkm_mm_head(&fb->tags, 0, 1, tags, tags, 1, &tile->tag)) { in nv35_fb_tile_comp()
39 tile->zcomp |= ((tile->tag->offset + tags - 1) >> 6) << 13; in nv35_fb_tile_comp()
48 .tags = nv20_fb_tags,
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| D | nv40.c | 34 u32 tags = round_up(tiles / fb->ram->parts, 0x100); in nv40_fb_tile_comp() local
36 !nvkm_mm_head(&fb->tags, 0, 1, tags, tags, 1, &tile->tag)) { in nv40_fb_tile_comp()
39 tile->zcomp |= ((tile->tag->offset + tags - 1) >> 8) << 13; in nv40_fb_tile_comp()
54 .tags = nv20_fb_tags,
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| D | nv25.c | 34 u32 tags = round_up(tiles / fb->ram->parts, 0x40); in nv25_fb_tile_comp() local
35 if (!nvkm_mm_head(&fb->tags, 0, 1, tags, tags, 1, &tile->tag)) { in nv25_fb_tile_comp()
47 .tags = nv20_fb_tags,
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| /kernel/linux/linux-5.10/tools/perf/ |
| D | Makefile | 64 # (Except for tags and TAGS targets. The reason is that the
65 # Makefile does not treat tags/TAGS as targets but as files
68 all tags TAGS: target
112 .PHONY: tags TAGS FORCE Makefile
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| /kernel/linux/linux-5.10/include/linux/ |
| D | radix-tree.h | 74 /* The top bits of xa_flags are used to store the root tags */
94 * @tags: bit-mask for tag-iterating
107 unsigned long tags; member
121 * - any function _modifying_ the tree or tags (inserting or deleting
122 * items, setting or clearing tags) must exclude other modifications, and
124 * - any function _reading_ the tree or tags (looking up items or tags,
153 * if only the RCU read lock is held. Functions to set/clear tags and to
282 * Leave iter->tags uninitialized. radix_tree_next_chunk() will fill it in radix_tree_iter_init()
284 * unsuccessful or non-tagged then nobody cares about ->tags. in radix_tree_iter_init()
305 * its end (next_index), and constructs a bit mask for tagged iterating (tags).
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| /kernel/linux/linux-5.10/Documentation/admin-guide/device-mapper/ |
| D | dm-integrity.rst | 6 per-sector tags that can be used for storing integrity information.
8 A general problem with storing integrity tags with every sector is that
13 writes sector data and integrity tags into a journal, commits the journal
14 and then copies the data and integrity tags to their respective location.
30 region's data and integrity tags are not synchronized - if the machine
68 not used and data sectors and integrity tags are written
72 data and integrity tags are written to the
126 integrity tags from the upper target, but it will automatically
127 generate and verify the integrity tags.
135 When this argument is not used, the integrity tags are accepted
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| /kernel/linux/linux-5.10/drivers/gpu/drm/nouveau/nvkm/subdev/volt/ |
| D | gpio.c | 30 static const u8 tags[] = { variable
42 for (i = 0; i < ARRAY_SIZE(tags); i++) { in nvkm_voltgpio_get()
44 int ret = nvkm_gpio_get(gpio, 0, tags[i], 0xff); in nvkm_voltgpio_get()
60 for (i = 0; i < ARRAY_SIZE(tags); i++, vid >>= 1) { in nvkm_voltgpio_set()
62 int ret = nvkm_gpio_set(gpio, 0, tags[i], 0xff, vid & 1); in nvkm_voltgpio_set()
85 for (i = 0; i < ARRAY_SIZE(tags); i++) { in nvkm_voltgpio_init()
87 int ret = nvkm_gpio_find(gpio, 0, tags[i], 0xff, &func); in nvkm_voltgpio_init()
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| /kernel/linux/linux-5.10/drivers/i2c/busses/ |
| D | i2c-qup.c | 97 /* QUP tags */
105 /* QUP v2 tags */
144 * Max tags length (start, stop and maximum 2 bytes address) for each QUP
148 /* Max data length for each DATARD tags */
177 * cur_tx_tags: pointer to tell cur position in tags
184 * tags: contains tx tag bytes for current QUP transfer
209 u8 tags[6]; member
276 /* function to write tags in tx fifo for i2c read transfer */
520 static int qup_i2c_set_tags_smb(u16 addr, u8 *tags, struct qup_i2c_dev *qup, in qup_i2c_set_tags_smb() argument
526 tags[len++] = QUP_TAG_V2_DATARD_STOP; in qup_i2c_set_tags_smb()
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| /kernel/linux/linux-5.10/tools/testing/selftests/arm64/mte/ |
| D | mte_common_util.c | 121 bool tags, int fd) in __mte_allocate_memory_range() argument
156 if (tags) in __mte_allocate_memory_range()
168 void *mte_allocate_memory(size_t size, int mem_type, int mapping, bool tags) in mte_allocate_memory() argument
170 return __mte_allocate_memory_range(size, mem_type, mapping, 0, 0, tags, -1); in mte_allocate_memory()
173 void *mte_allocate_file_memory(size_t size, int mem_type, int mapping, bool tags, int fd) in mte_allocate_file_memory() argument
188 return __mte_allocate_memory_range(size, mem_type, mapping, 0, 0, tags, fd); in mte_allocate_file_memory()
213 size_t range_before, size_t range_after, bool tags) in __mte_free_memory_range() argument
221 if (tags) in __mte_free_memory_range()
237 void mte_free_memory(void *ptr, size_t size, int mem_type, bool tags) in mte_free_memory() argument
239 __mte_free_memory_range(ptr, size, mem_type, 0, 0, tags); in mte_free_memory()
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| /kernel/linux/linux-5.10/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/ |
| D | gf100.c | 163 /* No VRAM, no tags for now. */ in gf100_ltc_oneinit_tag_ram()
169 /* tags for 1/4 of VRAM should be enough (8192/4 per GiB of VRAM) */ in gf100_ltc_oneinit_tag_ram()
178 /* 4 part 4 sub: 0x2000 bytes for 56 tags */ in gf100_ltc_oneinit_tag_ram()
179 /* 3 part 4 sub: 0x6000 bytes for 168 tags */ in gf100_ltc_oneinit_tag_ram()
182 * 0x4980 bytes for 64 tags, and round up to 0x6000 bytes for 64 tags. in gf100_ltc_oneinit_tag_ram()
184 * For 4 GiB of memory we'll have 8192 tags which makes 3 MiB, < 0.1 %. in gf100_ltc_oneinit_tag_ram()
203 nvkm_mm_fini(&fb->tags); in gf100_ltc_oneinit_tag_ram()
204 return nvkm_mm_init(&fb->tags, 0, 0, ltc->num_tags, 1); in gf100_ltc_oneinit_tag_ram()
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