| /linux-5.10/drivers/staging/gasket/ |
| D | gasket_sysfs.c | 17 * The device bound to this mapping. If this is NULL, then this mapping
34 /* Tracks active users of this mapping. */
50 /* Callback when a mapping's refcount goes to zero. */
56 /* Look up mapping information for the given device. */
71 dev_dbg(device, "%s: Mapping to device %s not found\n", in get_mapping()
76 /* Put a reference to a mapping. */
77 static void put_mapping(struct gasket_sysfs_mapping *mapping) in put_mapping() argument
84 if (!mapping) { in put_mapping()
85 pr_debug("%s: Mapping should not be NULL\n", __func__); in put_mapping()
89 mutex_lock(&mapping->mutex); in put_mapping()
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| /linux-5.10/mm/ |
| D | truncate.c | 34 static inline void __clear_shadow_entry(struct address_space *mapping, in __clear_shadow_entry() argument
37 XA_STATE(xas, &mapping->i_pages, index); in __clear_shadow_entry()
43 mapping->nrexceptional--; in __clear_shadow_entry()
46 static void clear_shadow_entry(struct address_space *mapping, pgoff_t index, in clear_shadow_entry() argument
49 xa_lock_irq(&mapping->i_pages); in clear_shadow_entry()
50 __clear_shadow_entry(mapping, index, entry); in clear_shadow_entry()
51 xa_unlock_irq(&mapping->i_pages); in clear_shadow_entry()
59 static void truncate_exceptional_pvec_entries(struct address_space *mapping, in truncate_exceptional_pvec_entries() argument
67 if (shmem_mapping(mapping)) in truncate_exceptional_pvec_entries()
77 dax = dax_mapping(mapping); in truncate_exceptional_pvec_entries()
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| D | filemap.c | 120 static void page_cache_delete(struct address_space *mapping, in page_cache_delete() argument
123 XA_STATE(xas, &mapping->i_pages, page->index); in page_cache_delete()
126 mapping_set_update(&xas, mapping); in page_cache_delete()
141 page->mapping = NULL; in page_cache_delete()
145 mapping->nrexceptional += nr; in page_cache_delete()
154 mapping->nrpages -= nr; in page_cache_delete()
157 static void unaccount_page_cache_page(struct address_space *mapping, in unaccount_page_cache_page() argument
170 cleancache_invalidate_page(mapping, page); in unaccount_page_cache_page()
184 if (mapping_exiting(mapping) && in unaccount_page_cache_page()
210 filemap_nr_thps_dec(mapping); in unaccount_page_cache_page()
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| D | readahead.c | 34 file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping) in file_ra_state_init() argument
36 ra->ra_pages = inode_to_bdi(mapping->host)->ra_pages; in file_ra_state_init()
48 static void read_cache_pages_invalidate_page(struct address_space *mapping, in read_cache_pages_invalidate_page() argument
54 page->mapping = mapping; in read_cache_pages_invalidate_page()
56 page->mapping = NULL; in read_cache_pages_invalidate_page()
65 static void read_cache_pages_invalidate_pages(struct address_space *mapping, in read_cache_pages_invalidate_pages() argument
73 read_cache_pages_invalidate_page(mapping, victim); in read_cache_pages_invalidate_pages()
79 * @mapping: the address_space
89 int read_cache_pages(struct address_space *mapping, struct list_head *pages, in read_cache_pages() argument
98 if (add_to_page_cache_lru(page, mapping, page->index, in read_cache_pages()
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| /linux-5.10/drivers/gpu/drm/panfrost/ |
| D | panfrost_gem.c | 7 #include <linux/dma-mapping.h>
59 struct panfrost_gem_mapping *iter, *mapping = NULL; in panfrost_gem_mapping_get() local
65 mapping = iter; in panfrost_gem_mapping_get()
71 return mapping; in panfrost_gem_mapping_get()
75 panfrost_gem_teardown_mapping(struct panfrost_gem_mapping *mapping) in panfrost_gem_teardown_mapping() argument
79 if (mapping->active) in panfrost_gem_teardown_mapping()
80 panfrost_mmu_unmap(mapping); in panfrost_gem_teardown_mapping()
82 priv = container_of(mapping->mmu, struct panfrost_file_priv, mmu); in panfrost_gem_teardown_mapping()
84 if (drm_mm_node_allocated(&mapping->mmnode)) in panfrost_gem_teardown_mapping()
85 drm_mm_remove_node(&mapping->mmnode); in panfrost_gem_teardown_mapping()
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| /linux-5.10/include/linux/ |
| D | pagemap.h | 22 * Bits in mapping->flags.
37 * @mapping: the mapping in which an error should be set
38 * @error: the error to set in the mapping
46 * mapping_set_error to record the error in the mapping so that it can be
49 static inline void mapping_set_error(struct address_space *mapping, int error) in mapping_set_error() argument
55 __filemap_set_wb_err(mapping, error); in mapping_set_error()
58 if (mapping->host) in mapping_set_error()
59 errseq_set(&mapping->host->i_sb->s_wb_err, error); in mapping_set_error()
63 set_bit(AS_ENOSPC, &mapping->flags); in mapping_set_error()
65 set_bit(AS_EIO, &mapping->flags); in mapping_set_error()
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| D | io-mapping.h | 17 * The io_mapping mechanism provides an abstraction for mapping
20 * See Documentation/driver-api/io-mapping.rst
35 * For small address space machines, mapping large objects
58 io_mapping_fini(struct io_mapping *mapping) in io_mapping_fini() argument
60 iomap_free(mapping->base, mapping->size); in io_mapping_fini()
65 io_mapping_map_atomic_wc(struct io_mapping *mapping, in io_mapping_map_atomic_wc() argument
70 BUG_ON(offset >= mapping->size); in io_mapping_map_atomic_wc()
71 phys_addr = mapping->base + offset; in io_mapping_map_atomic_wc()
72 return iomap_atomic_prot_pfn(PHYS_PFN(phys_addr), mapping->prot); in io_mapping_map_atomic_wc()
82 io_mapping_map_wc(struct io_mapping *mapping, in io_mapping_map_wc() argument
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| D | tpm_eventlog.h | 166 void *mapping = NULL; in __calc_tpm2_event_size() local
186 mapping = TPM_MEMREMAP((unsigned long)marker_start, in __calc_tpm2_event_size()
188 if (!mapping) { in __calc_tpm2_event_size()
193 mapping = marker_start; in __calc_tpm2_event_size()
196 event = (struct tcg_pcr_event2_head *)mapping; in __calc_tpm2_event_size()
233 TPM_MEMUNMAP(mapping, mapping_size); in __calc_tpm2_event_size()
235 mapping = TPM_MEMREMAP((unsigned long)marker, in __calc_tpm2_event_size()
237 if (!mapping) { in __calc_tpm2_event_size()
242 mapping = marker; in __calc_tpm2_event_size()
245 memcpy(&halg, mapping, halg_size); in __calc_tpm2_event_size()
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| /linux-5.10/Documentation/admin-guide/mm/ |
| D | nommu-mmap.rst | 2 No-MMU memory mapping support
5 The kernel has limited support for memory mapping under no-MMU conditions, such
7 mapping is made use of in conjunction with the mmap() system call, the shmat()
9 mapping is actually performed by the binfmt drivers, which call back into the
12 Memory mapping behaviour also involves the way fork(), vfork(), clone() and
19 (#) Anonymous mapping, MAP_PRIVATE
27 (#) Anonymous mapping, MAP_SHARED
37 the underlying file are reflected in the mapping; copied across fork.
41 - If one exists, the kernel will re-use an existing mapping to the
45 - If possible, the file mapping will be directly on the backing device
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| /linux-5.10/drivers/gpu/drm/exynos/ |
| D | exynos_drm_dma.c | 35 * drm_iommu_attach_device- attach device to iommu mapping
41 * mapping.
58 * Keep the original DMA mapping of the sub-device and in drm_iommu_attach_device()
67 ret = arm_iommu_attach_device(subdrv_dev, priv->mapping); in drm_iommu_attach_device()
69 ret = iommu_attach_device(priv->mapping, subdrv_dev); in drm_iommu_attach_device()
76 * drm_iommu_detach_device -detach device address space mapping from device
82 * mapping
93 iommu_detach_device(priv->mapping, subdrv_dev); in drm_iommu_detach_device()
103 DRM_INFO("Exynos DRM: using %s device for DMA mapping operations\n", in exynos_drm_register_dma()
110 if (!priv->mapping) { in exynos_drm_register_dma()
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| /linux-5.10/drivers/media/usb/uvc/ |
| D | uvc_ctrl.c | 365 static s32 uvc_ctrl_get_zoom(struct uvc_control_mapping *mapping, in uvc_ctrl_get_zoom() argument
383 static void uvc_ctrl_set_zoom(struct uvc_control_mapping *mapping, in uvc_ctrl_set_zoom() argument
390 static s32 uvc_ctrl_get_rel_speed(struct uvc_control_mapping *mapping, in uvc_ctrl_get_rel_speed() argument
393 unsigned int first = mapping->offset / 8; in uvc_ctrl_get_rel_speed()
410 static void uvc_ctrl_set_rel_speed(struct uvc_control_mapping *mapping, in uvc_ctrl_set_rel_speed() argument
413 unsigned int first = mapping->offset / 8; in uvc_ctrl_set_rel_speed()
759 /* Extract the bit string specified by mapping->offset and mapping->size
761 * a signed 32bit integer. Sign extension will be performed if the mapping
764 static s32 uvc_get_le_value(struct uvc_control_mapping *mapping, in uvc_get_le_value() argument
767 int bits = mapping->size; in uvc_get_le_value()
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| /linux-5.10/tools/testing/selftests/arm64/mte/ |
| D | check_mmap_options.c | 60 static int check_anonymous_memory_mapping(int mem_type, int mode, int mapping, int tag_check) in check_anonymous_memory_mapping() argument
70 map_ptr = (char *)mte_allocate_memory(map_size, mem_type, mapping, false); in check_anonymous_memory_mapping()
92 static int check_file_memory_mapping(int mem_type, int mode, int mapping, int tag_check) in check_file_memory_mapping() argument
106 map_ptr = (char *)mte_allocate_file_memory(map_size, mem_type, mapping, false, fd); in check_file_memory_mapping()
131 static int check_clear_prot_mte_flag(int mem_type, int mode, int mapping) in check_clear_prot_mte_flag() argument
141 ptr = (char *)mte_allocate_memory_tag_range(sizes[run], mem_type, mapping, in check_clear_prot_mte_flag()
162 ptr = (char *)mte_allocate_file_memory_tag_range(sizes[run], mem_type, mapping, in check_clear_prot_mte_flag()
214 "Check anonymous memory with private mapping, sync error mode, mmap memory and tag check off\n"); in main()
216 …"Check file memory with private mapping, sync error mode, mmap/mprotect memory and tag check off\n… in main()
220 "Check anonymous memory with private mapping, no error mode, mmap memory and tag check off\n"); in main()
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| D | check_child_memory.c | 84 static int check_child_memory_mapping(int mem_type, int mode, int mapping) in check_child_memory_mapping() argument
93 ptr = (char *)mte_allocate_memory_tag_range(sizes[run], mem_type, mapping, in check_child_memory_mapping()
106 static int check_child_file_mapping(int mem_type, int mode, int mapping) in check_child_file_mapping() argument
119 map_ptr = (char *)mte_allocate_file_memory(map_size, mem_type, mapping, false, fd); in check_child_file_mapping()
170 "Check child anonymous memory with private mapping, precise mode and mmap memory\n"); in main()
172 "Check child anonymous memory with shared mapping, precise mode and mmap memory\n"); in main()
174 "Check child anonymous memory with private mapping, imprecise mode and mmap memory\n"); in main()
176 "Check child anonymous memory with shared mapping, imprecise mode and mmap memory\n"); in main()
178 "Check child anonymous memory with private mapping, precise mode and mmap/mprotect memory\n"); in main()
180 "Check child anonymous memory with shared mapping, precise mode and mmap/mprotect memory\n"); in main()
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| /linux-5.10/arch/arm/mm/ |
| D | dma-mapping.c | 3 * linux/arch/arm/mm/dma-mapping.c
7 * DMA uncached mapping support.
420 * Clear previous low-memory mapping to ensure that the in dma_contiguous_remap()
783 * Create userspace mapping for the DMA-coherent memory.
801 * Free a buffer as defined by the above mapping.
910 * Use the driver DMA support - see dma-mapping.h (dma_sync_*)
1099 static int extend_iommu_mapping(struct dma_iommu_mapping *mapping);
1101 static inline dma_addr_t __alloc_iova(struct dma_iommu_mapping *mapping, in __alloc_iova() argument
1107 size_t mapping_size = mapping->bits << PAGE_SHIFT; in __alloc_iova()
1118 spin_lock_irqsave(&mapping->lock, flags); in __alloc_iova()
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| D | flush.c | 199 void __flush_dcache_page(struct address_space *mapping, struct page *page) in __flush_dcache_page() argument
202 * Writeback any data associated with the kernel mapping of this in __flush_dcache_page()
204 * coherent with the kernels mapping. in __flush_dcache_page()
232 if (mapping && cache_is_vipt_aliasing()) in __flush_dcache_page()
237 static void __flush_dcache_aliases(struct address_space *mapping, struct page *page) in __flush_dcache_aliases() argument
247 * - aliasing VIPT: we only need to find one mapping of this page. in __flush_dcache_aliases()
251 flush_dcache_mmap_lock(mapping); in __flush_dcache_aliases()
252 vma_interval_tree_foreach(mpnt, &mapping->i_mmap, pgoff, pgoff) { in __flush_dcache_aliases()
265 flush_dcache_mmap_unlock(mapping); in __flush_dcache_aliases()
273 struct address_space *mapping; in __sync_icache_dcache() local
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| /linux-5.10/Documentation/driver-api/ |
| D | io-mapping.rst | 8 The io_mapping functions in linux/io-mapping.h provide an abstraction for
9 efficiently mapping small regions of an I/O device to the CPU. The initial
14 A mapping object is created during driver initialization using::
20 mappable, while 'size' indicates how large a mapping region to
23 This _wc variant provides a mapping which may only be used
26 With this mapping object, individual pages can be mapped either atomically
30 void *io_mapping_map_atomic_wc(struct io_mapping *mapping,
33 'offset' is the offset within the defined mapping region.
59 void *io_mapping_map_wc(struct io_mapping *mapping,
75 void io_mapping_free(struct io_mapping *mapping)
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| /linux-5.10/drivers/gpu/drm/etnaviv/ |
| D | etnaviv_mmu.c | 6 #include <linux/dma-mapping.h>
65 /* unroll mapping in case something went wrong */ in etnaviv_context_map()
123 struct etnaviv_vram_mapping *mapping) in etnaviv_iommu_remove_mapping() argument
125 struct etnaviv_gem_object *etnaviv_obj = mapping->object; in etnaviv_iommu_remove_mapping()
127 etnaviv_iommu_unmap(context, mapping->vram_node.start, in etnaviv_iommu_remove_mapping()
129 drm_mm_remove_node(&mapping->vram_node); in etnaviv_iommu_remove_mapping()
164 * so we must keep its mapping. in etnaviv_iommu_find_iova()
196 * this mapping. in etnaviv_iommu_find_iova()
225 struct etnaviv_vram_mapping *mapping, u64 va) in etnaviv_iommu_map_gem() argument
242 mapping->iova = iova; in etnaviv_iommu_map_gem()
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| D | etnaviv_gem.c | 7 #include <linux/dma-mapping.h>
229 struct etnaviv_vram_mapping *mapping; in etnaviv_gem_get_vram_mapping() local
231 list_for_each_entry(mapping, &obj->vram_list, obj_node) { in etnaviv_gem_get_vram_mapping()
232 if (mapping->context == context) in etnaviv_gem_get_vram_mapping()
233 return mapping; in etnaviv_gem_get_vram_mapping()
239 void etnaviv_gem_mapping_unreference(struct etnaviv_vram_mapping *mapping) in etnaviv_gem_mapping_unreference() argument
241 struct etnaviv_gem_object *etnaviv_obj = mapping->object; in etnaviv_gem_mapping_unreference()
244 WARN_ON(mapping->use == 0); in etnaviv_gem_mapping_unreference()
245 mapping->use -= 1; in etnaviv_gem_mapping_unreference()
256 struct etnaviv_vram_mapping *mapping; in etnaviv_gem_mapping_get() local
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| /linux-5.10/tools/testing/selftests/vm/ |
| D | mremap_dontunmap.c | 62 "unable to unmap destination mapping"); in kernel_support_for_mremap_dontunmap()
66 "unable to unmap source mapping"); in kernel_support_for_mremap_dontunmap()
70 // This helper will just validate that an entire mapping contains the expected
97 // the source mapping mapped.
109 // Try to just move the whole mapping anywhere (not fixed). in mremap_dontunmap_simple()
125 "unable to unmap destination mapping"); in mremap_dontunmap_simple()
127 "unable to unmap source mapping"); in mremap_dontunmap_simple()
138 // create a mapping up front. in mremap_dontunmap_simple_fixed()
157 "mremap should have placed the remapped mapping at dest_mapping"); in mremap_dontunmap_simple_fixed()
159 // The dest mapping will have been unmap by mremap so we expect the Xs in mremap_dontunmap_simple_fixed()
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| /linux-5.10/fs/ |
| D | dax.c | 181 * @entry may no longer be the entry at the index in the mapping.
331 static void dax_associate_entry(void *entry, struct address_space *mapping, in dax_associate_entry() argument
344 WARN_ON_ONCE(page->mapping); in dax_associate_entry()
345 page->mapping = mapping; in dax_associate_entry()
350 static void dax_disassociate_entry(void *entry, struct address_space *mapping, in dax_disassociate_entry() argument
362 WARN_ON_ONCE(page->mapping && page->mapping != mapping); in dax_disassociate_entry()
363 page->mapping = NULL; in dax_disassociate_entry()
394 /* Ensure page->mapping isn't freed while we look at it */ in dax_lock_page()
397 struct address_space *mapping = READ_ONCE(page->mapping); in dax_lock_page() local
400 if (!mapping || !dax_mapping(mapping)) in dax_lock_page()
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| /linux-5.10/drivers/sh/clk/ |
| D | core.c | 340 struct clk_mapping *mapping = clk->mapping; in clk_establish_mapping() local
345 if (!mapping) { in clk_establish_mapping()
349 * dummy mapping for root clocks with no specified ranges in clk_establish_mapping()
352 clk->mapping = &dummy_mapping; in clk_establish_mapping()
357 * If we're on a child clock and it provides no mapping of its in clk_establish_mapping()
358 * own, inherit the mapping from its root clock. in clk_establish_mapping()
361 mapping = clkp->mapping; in clk_establish_mapping()
362 BUG_ON(!mapping); in clk_establish_mapping()
366 * Establish initial mapping. in clk_establish_mapping()
368 if (!mapping->base && mapping->phys) { in clk_establish_mapping()
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| /linux-5.10/fs/gfs2/ |
| D | aops.c | 91 struct inode *inode = page->mapping->host; in gfs2_writepage()
120 struct inode * const inode = page->mapping->host; in gfs2_write_jdata_page()
153 struct inode *inode = page->mapping->host; in __gfs2_jdata_writepage()
179 struct inode *inode = page->mapping->host; in gfs2_jdata_writepage()
198 * @mapping: The mapping to write
203 static int gfs2_writepages(struct address_space *mapping, in gfs2_writepages() argument
206 struct gfs2_sbd *sdp = gfs2_mapping2sbd(mapping); in gfs2_writepages()
216 ret = iomap_writepages(mapping, wbc, &wpc, &gfs2_writeback_ops); in gfs2_writepages()
224 * @mapping: The mapping
233 static int gfs2_write_jdata_pagevec(struct address_space *mapping, in gfs2_write_jdata_pagevec() argument
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| /linux-5.10/arch/nios2/mm/ |
| D | cacheflush.c | 73 static void flush_aliases(struct address_space *mapping, struct page *page) in flush_aliases() argument
81 flush_dcache_mmap_lock(mapping); in flush_aliases()
82 vma_interval_tree_foreach(mpnt, &mapping->i_mmap, pgoff, pgoff) { in flush_aliases()
94 flush_dcache_mmap_unlock(mapping); in flush_aliases()
160 void __flush_dcache_page(struct address_space *mapping, struct page *page) in __flush_dcache_page() argument
163 * Writeback any data associated with the kernel mapping of this in __flush_dcache_page()
165 * coherent with the kernels mapping. in __flush_dcache_page()
174 struct address_space *mapping; in flush_dcache_page() local
183 mapping = page_mapping_file(page); in flush_dcache_page()
186 if (mapping && !mapping_mapped(mapping)) { in flush_dcache_page()
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| /linux-5.10/fs/afs/ |
| D | write.c | 77 int afs_write_begin(struct file *file, struct address_space *mapping, in afs_write_begin() argument
93 page = grab_cache_page_write_begin(mapping, index, flags); in afs_write_begin()
162 int afs_write_end(struct file *file, struct address_space *mapping, in afs_write_end() argument
238 static void afs_kill_pages(struct address_space *mapping, in afs_kill_pages() argument
241 struct afs_vnode *vnode = AFS_FS_I(mapping->host); in afs_kill_pages()
256 pv.nr = find_get_pages_contig(mapping, first, count, pv.pages); in afs_kill_pages()
267 generic_error_remove_page(mapping, page); in afs_kill_pages()
281 struct address_space *mapping, in afs_redirty_pages() argument
284 struct afs_vnode *vnode = AFS_FS_I(mapping->host); in afs_redirty_pages()
299 pv.nr = find_get_pages_contig(mapping, first, count, pv.pages); in afs_redirty_pages()
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| /linux-5.10/Documentation/core-api/ |
| D | dma-attributes.rst | 6 defined in linux/dma-mapping.h.
11 DMA_ATTR_WEAK_ORDERING specifies that reads and writes to the mapping
21 DMA_ATTR_WRITE_COMBINE specifies that writes to the mapping may be
32 virtual mapping for the allocated buffer. On some architectures creating
33 such mapping is non-trivial task and consumes very limited resources
52 having a mapping created separately for each device and is usually
67 device domain after releasing a mapping for it. Use this attribute with
73 By default DMA-mapping subsystem is allowed to assemble the buffer
82 This is a hint to the DMA-mapping subsystem that it's probably not worth
84 efficiency (AKA it's not worth trying to build the mapping out of larger
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