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/linux/drivers/gpu/drm/nouveau/nvkm/core/
H A Dmemory.c34 struct nvkm_tags *tags = *ptags; in nvkm_memory_tags_put() local
35 if (tags) { in nvkm_memory_tags_put()
36 mutex_lock(&fb->tags.mutex); in nvkm_memory_tags_put()
37 if (refcount_dec_and_test(&tags->refcount)) { in nvkm_memory_tags_put()
38 nvkm_mm_free(&fb->tags.mm, &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()
42 mutex_unlock(&fb->tags.mutex); in nvkm_memory_tags_put()
53 struct nvkm_tags *tags; in nvkm_memory_tags_get() local
55 mutex_lock(&fb->tags.mutex); in nvkm_memory_tags_get()
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/linux/tools/testing/selftests/alloc_tag/
H A Dallocinfo_ioctl_test.c86 const struct allocinfo_tag_data_vec *tags, in match_entries() argument
92 if (procfs_entries->count != tags->count) { in match_entries()
94 tags->count, procfs_entries->count); in match_entries()
98 if (!match_entry(&procfs_entries->tag[i], &tags->tag[i], in match_entries()
184 static enum ioctl_ret get_filtered_ioctl_entries(struct allocinfo_tag_data_vec *tags, in get_filtered_ioctl_entries() argument
213 memset(tags, 0, sizeof(*tags)); in get_filtered_ioctl_entries()
222 memcpy(&tags->tag[tags->count++], &get_at_params.data, sizeof(get_at_params.data)); in get_filtered_ioctl_entries()
224 while (tags->count < VEC_MAX_ENTRIES && in get_filtered_ioctl_entries()
225 __allocinfo_get_next(fd, &tags->tag[tags->count]) == 0) in get_filtered_ioctl_entries()
226 tags->count++; in get_filtered_ioctl_entries()
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/linux/Documentation/arch/arm64/
H A Dmemory-tagging-extension.rst36 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
108 **Note**: There are no *match-all* logical tags available for user
119 Excluding Tags in the ``IRG``, ``ADDG`` and ``SUBG`` instructions
122 The architecture allows excluding certain tags to be randomly generated
124 excludes all tags other than 0. A user thread can enable specific tags
126 flags, 0, 0, 0)`` system call where ``flags`` contains the tags bitmap
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H A Dtagged-pointers.rst38 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 When delivering signals, non-zero tags are not preserved in
59 that signal handlers in applications making use of tags cannot rely
74 Non-zero tags are never preserved in sigcontext.fault_address
/linux/arch/arm64/lib/
H A Dmte.S27 * Clear the tags in a page
40 * Zero the page and tags at the same time
66 * Copy the tags from the source page to the destination one
84 * Read tags from a user buffer (one tag per byte) and set the corresponding
85 * tags at the given kernel address. Used by PTRACE_POKEMTETAGS.
88 * x2 - number of tags/bytes (n)
90 * x0 - number of tags read/set
104 2: sub x0, x1, x3 // update the number of tags set
109 * Get the tags from a kernel address range and write the tag values to the
113 * x2 - number of tags/bytes (n)
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/linux/arch/arm/kernel/
H A Datags_parse.c11 * 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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/linux/Documentation/arch/sparc/
H A Dadi.rst6 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 for 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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/linux/security/apparmor/
H A Dpolicy_unpack.c702 static bool verify_tags(struct aa_tags_struct *tags, const char **info) in verify_tags() argument
704 if ((tags->hdrs.size && !tags->hdrs.table) || in verify_tags()
705 (!tags->hdrs.size && tags->hdrs.table)) { in verify_tags()
709 if ((tags->sets.size && !tags->sets.table) || in verify_tags()
710 (!tags->sets.size && tags->sets.table)) { in verify_tags()
714 if ((tags->strs.size && !tags->strs.table) || in verify_tags()
715 (!tags->strs.size && tags->strs.table)) { in verify_tags()
716 *info = "failed verification tags->strs disagree"; in verify_tags()
720 if (!tags->sets.size && !tags->hdrs.size && !tags->strs.size) { in verify_tags()
722 } else if (!(tags->sets.size && tags->hdrs.size && tags->strs.size)) { in verify_tags()
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/linux/arch/arm64/kernel/
H A Dmte.c55 /* ensure the tags are visible before the PTE is set */ in mte_sync_tags()
61 /* if PG_mte_tagged is set, tags have already been initialised */ in mte_sync_tags()
69 /* ensure the tags are visible before the PTE is set */ in mte_sync_tags()
88 * pages is tagged, __set_ptes() may zero or change the tags of the in memcmp_pages()
440 * Access MTE tags in another process' address space as given in mm. Update
441 * the number of tags copied. Return 0 if any tags copied, error otherwise.
460 unsigned long tags, offset; in __access_remote_tags() local
472 * Only copy tags if the page has been mapped as PROT_MTE in __access_remote_tags()
473 * (PG_mte_tagged set). Otherwise the tags are not valid and in __access_remote_tags()
475 * would cause the existing tags to be cleared if the page in __access_remote_tags()
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/linux/drivers/gpu/drm/nouveau/nvkm/subdev/fb/
H A Dnv20.c47 u32 tags = round_up(tiles / fb->ram->parts, 0x40); in nv20_fb_tile_comp() local
48 if (!nvkm_mm_head(&fb->tags.mm, 0, 1, tags, tags, 1, &tile->tag)) { in nv20_fb_tile_comp()
66 nvkm_mm_free(&fb->tags.mm, &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,
H A Dnv35.c34 u32 tags = round_up(tiles / fb->ram->parts, 0x40); in nv35_fb_tile_comp() local
35 if (!nvkm_mm_head(&fb->tags.mm, 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,
H A Dnv36.c34 u32 tags = round_up(tiles / fb->ram->parts, 0x40); in nv36_fb_tile_comp() local
35 if (!nvkm_mm_head(&fb->tags.mm, 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,
H A Dnv40.c34 u32 tags = round_up(tiles / fb->ram->parts, 0x100); in nv40_fb_tile_comp() local
36 !nvkm_mm_head(&fb->tags.mm, 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,
H A Dbase.c109 u32 tags = 0; in nvkm_fb_oneinit() local
129 if (fb->func->tags) { in nvkm_fb_oneinit()
130 tags = fb->func->tags(fb); in nvkm_fb_oneinit()
131 nvkm_debug(subdev, "%d comptags\n", tags); in nvkm_fb_oneinit()
134 return nvkm_mm_init(&fb->tags.mm, 0, 0, tags, 1); in nvkm_fb_oneinit()
243 nvkm_mm_fini(&fb->tags.mm); in nvkm_fb_dtor()
244 mutex_destroy(&fb->tags.mutex); in nvkm_fb_dtor()
279 mutex_init(&fb->tags.mutex); in nvkm_fb_ctor()
H A Dnv25.c34 u32 tags = round_up(tiles / fb->ram->parts, 0x40); in nv25_fb_tile_comp() local
35 if (!nvkm_mm_head(&fb->tags.mm, 0, 1, tags, tags, 1, &tile->tag)) { in nv25_fb_tile_comp()
47 .tags = nv20_fb_tags,
H A Dnv30.c53 u32 tags = round_up(tiles / fb->ram->parts, 0x40); in nv30_fb_tile_comp() local
54 if (!nvkm_mm_head(&fb->tags.mm, 0, 1, tags, tags, 1, &tile->tag)) { in nv30_fb_tile_comp()
58 tile->zcomp |= ((tile->tag->offset + tags - 1) >> 6) << 12; in nv30_fb_tile_comp()
119 .tags = nv20_fb_tags,
/linux/block/
H A Dblk-mq.h50 struct elevator_tags *tags,
63 void blk_mq_free_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
65 void blk_mq_free_rq_map(struct blk_mq_tag_set *set, struct blk_mq_tags *tags);
69 struct blk_mq_tags *tags,
168 /* allocate multiple requests/tags in one go */
179 void blk_mq_free_tags(struct blk_mq_tag_set *set, struct blk_mq_tags *tags);
184 void blk_mq_put_tag(struct blk_mq_tags *tags, struct blk_mq_ctx *ctx,
186 void blk_mq_put_tags(struct blk_mq_tags *tags, int *tag_array, int nr_tags);
192 void blk_mq_tag_wakeup_all(struct blk_mq_tags *tags, bool);
195 void blk_mq_all_tag_iter(struct blk_mq_tags *tags, busy_tag_iter_fn *fn,
[all …]
H A Dblk-mq.c370 blk_mq_tag_wakeup_all(hctx->tags, true); in blk_mq_wake_waiters()
411 struct blk_mq_tags *tags, unsigned int tag) in blk_mq_rq_ctx_init() argument
416 struct request *rq = tags->static_rqs[tag]; in blk_mq_rq_ctx_init()
457 struct blk_mq_tags *tags; in blk_mq_rq_ctx_init()
469 tags = blk_mq_tags_from_data(data); in __blk_mq_alloc_requests_batch()
474 prefetch(tags->static_rqs[tag]); in __blk_mq_alloc_requests_batch()
476 rq = blk_mq_rq_ctx_init(data, tags, tag); in __blk_mq_alloc_requests_batch()
508 * All requests use scheduler tags when an I/O scheduler is in blk_mq_limit_depth()
825 blk_mq_put_tag(hctx->tags, ctx, rq->tag); in blk_mq_free_request()
1175 blk_mq_put_tags(hctx->tags, tag_arra in blk_mq_end_request_batch()
467 struct blk_mq_tags *tags; __blk_mq_alloc_requests_batch() local
1168 int tags[TAG_COMP_BATCH], nr_tags = 0; blk_mq_end_request_batch() local
3438 blk_mq_clear_rq_mapping(struct blk_mq_tags * drv_tags,struct blk_mq_tags * tags) blk_mq_clear_rq_mapping() argument
3466 blk_mq_free_rqs(struct blk_mq_tag_set * set,struct blk_mq_tags * tags,unsigned int hctx_idx) blk_mq_free_rqs() argument
3499 blk_mq_free_rq_map(struct blk_mq_tag_set * set,struct blk_mq_tags * tags) blk_mq_free_rq_map() argument
3542 struct blk_mq_tags *tags; blk_mq_alloc_rq_map() local
3588 blk_mq_alloc_rqs(struct blk_mq_tag_set * set,struct blk_mq_tags * tags,unsigned int hctx_idx,unsigned int depth) blk_mq_alloc_rqs() argument
3679 struct blk_mq_tags *tags = hctx->sched_tags ? blk_mq_hctx_has_requests() local
3918 blk_mq_clear_flush_rq_mapping(struct blk_mq_tags * tags,unsigned int queue_depth,struct request * flush_rq) blk_mq_clear_flush_rq_mapping() argument
4112 struct blk_mq_tags *tags; blk_mq_alloc_map_and_rqs() local
4144 blk_mq_free_map_and_rqs(struct blk_mq_tag_set * set,struct blk_mq_tags * tags,unsigned int hctx_idx) blk_mq_free_map_and_rqs() argument
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H A Dblk-mq-sched.c420 /* Shared tags are stored at index 0 in @tags. */ in blk_mq_free_sched_tags()
422 blk_mq_free_map_and_rqs(set, et->tags[0], BLK_MQ_NO_HCTX_IDX); in blk_mq_free_sched_tags()
425 blk_mq_free_map_and_rqs(set, et->tags[i], i); in blk_mq_free_sched_tags()
517 et = kmalloc_flex(*et, tags, nr_tags, gfp); in blk_mq_alloc_sched_tags()
525 /* Shared tags are stored at index 0 in @tags. */ in blk_mq_alloc_sched_tags()
526 et->tags[0] = blk_mq_alloc_map_and_rqs(set, BLK_MQ_NO_HCTX_IDX, in blk_mq_alloc_sched_tags()
528 if (!et->tags[0]) in blk_mq_alloc_sched_tags()
532 et->tags[i] = blk_mq_alloc_map_and_rqs(set, i, in blk_mq_alloc_sched_tags()
534 if (!et->tags[i]) in blk_mq_alloc_sched_tags()
542 blk_mq_free_map_and_rqs(set, et->tags[i], i); in blk_mq_alloc_sched_tags()
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/linux/tools/perf/
H A DMakefile70 # (Except for tags and TAGS targets. The reason is that the
71 # Makefile does not treat tags/TAGS as targets but as files
74 all tags TAGS: target
124 .PHONY: tags TAGS FORCE Makefile build-test build-test-tarball check-headers
/linux/drivers/gpu/drm/nouveau/nvkm/subdev/volt/
H A Dgpio.c30 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()
/linux/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/
H A Dgf100.c163 /* 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.mm); in gf100_ltc_oneinit_tag_ram()
204 return nvkm_mm_init(&fb->tags.mm, 0, 0, ltc->num_tags, 1); in gf100_ltc_oneinit_tag_ram()
/linux/tools/tracing/rtla/
H A DMakefile.rtla52 .PHONY: tags
53 tags:
56 .PHONY: TAGS
57 TAGS:
62 $(RM) tags TAGS
/linux/tools/testing/selftests/arm64/mte/
H A Dmte_common_util.c169 bool tags, int fd) in __mte_allocate_memory_range() argument
207 if (tags) in __mte_allocate_memory_range()
219 void *mte_allocate_memory(size_t size, int mem_type, int mapping, bool tags) in mte_allocate_memory() argument
221 return __mte_allocate_memory_range(size, mem_type, mapping, 0, 0, tags, -1); in mte_allocate_memory()
224 void *mte_allocate_file_memory(size_t size, int mem_type, int mapping, bool tags, int fd) in mte_allocate_file_memory() argument
246 return __mte_allocate_memory_range(size, mem_type, mapping, 0, 0, tags, fd); in mte_allocate_file_memory()
277 size_t range_before, size_t range_after, bool tags) in __mte_free_memory_range() argument
285 if (tags) in __mte_free_memory_range()
301 void mte_free_memory(void *ptr, size_t size, int mem_type, bool tags) in mte_free_memory() argument
303 __mte_free_memory_range(ptr, size, mem_type, 0, 0, tags); in mte_free_memory()
/linux/drivers/block/
H A Dps3vram.c64 struct ps3vram_tag *tags; member
313 if (!(cache->tags[entry].flags & CACHE_PAGE_DIRTY)) in ps3vram_cache_evict()
317 cache->tags[entry].address); in ps3vram_cache_evict()
319 cache->tags[entry].address, DMA_PAGE_SIZE, in ps3vram_cache_evict()
323 entry * cache->page_size, cache->tags[entry].address, in ps3vram_cache_evict()
326 cache->tags[entry].flags &= ~CACHE_PAGE_DIRTY; in ps3vram_cache_evict()
345 cache->tags[entry].address = address; in ps3vram_cache_load()
346 cache->tags[entry].flags |= CACHE_PAGE_PRESENT; in ps3vram_cache_load()
359 cache->tags[i].flags = 0; in ps3vram_cache_flush()
378 if ((cache->tags[i].flags & CACHE_PAGE_PRESENT) && in ps3vram_cache_match()
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