| /linux/fs/btrfs/tests/ |
| H A D | free-space-tree-tests.c | 154 u32 alignment) in test_empty_block_group() argument
168 u32 alignment) in test_remove_all() argument
189 u32 alignment) in test_remove_beginning() argument
192 {cache->start + alignment, cache->length - alignment}, in test_remove_beginning()
197 cache->start, alignment); in test_remove_beginning()
212 u32 alignment) in test_remove_end() argument
215 {cache->start, cache->length - alignment}, in test_remove_end()
220 cache->start + cache->length - alignment, in test_remove_end()
221 alignment); in test_remove_end()
235 u32 alignment) in test_remove_middle() argument
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| /linux/tools/testing/selftests/exec/ |
| H A D | load_address.c | 13 unsigned long long alignment; member
28 stats->alignment = 0; in ExtractStatistics()
43 if (align > stats->alignment) in ExtractStatistics()
44 stats->alignment = align; in ExtractStatistics()
77 ksft_print_msg("load_address=%#llx alignment=%#llx\n", in main()
78 extracted.load_address, extracted.alignment); in main()
89 /* Did we find an alignment? */ in main()
90 ksft_test_result(extracted.alignment != 0, in main()
91 "Alignment%s found\n", extracted.alignment ? "" : " NOT"); in main()
93 /* Is the alignment sane? */ in main()
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| /linux/drivers/misc/ |
| H A D | pci_endpoint_test.c | 125 size_t alignment; member
131 size_t alignment; member
363 struct pci_endpoint_test_xfer_param *param, size_t alignment) in pci_endpoint_test_validate_xfer_params() argument
370 if (param->size > SIZE_MAX - alignment) { in pci_endpoint_test_validate_xfer_params()
397 size_t alignment = test->alignment; in pci_endpoint_test_copy() local
409 err = pci_endpoint_test_validate_xfer_params(dev, ¶m, alignment); in pci_endpoint_test_copy()
424 orig_src_addr = kzalloc(size + alignment, GFP_KERNEL); in pci_endpoint_test_copy()
431 get_random_bytes(orig_src_addr, size + alignment); in pci_endpoint_test_copy()
433 size + alignment, DMA_TO_DEVICE); in pci_endpoint_test_copy()
440 if (alignment && !IS_ALIGNED(orig_src_phys_addr, alignment)) { in pci_endpoint_test_copy()
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| /linux/arch/mips/include/asm/octeon/ |
| H A D | cvmx-bootmem.h | 41 /* minimum alignment of bootmem alloced blocks */
158 * @alignment: Alignment required - must be power of 2
162 uint64_t alignment);
181 * @alignment: Alignment required - must be power of 2
186 extern void *cvmx_bootmem_alloc_named(uint64_t size, uint64_t alignment,
200 * @align: Alignment of memory to be allocated. (must be a power of 2)
221 * @param align Alignment of memory to be allocated. (must be a power of 2)
251 * (optional) requested address and alignment.
261 * @alignment: Requested alignment of the block. If this alignment
263 * power of 2. (Note: Alignment of
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| /linux/drivers/gpu/drm/i915/ |
| H A D | i915_gem_gtt.c | 161 * @alignment: required alignment of starting offset, may be 0 but
172 * is can insert the node. The hole address is aligned to @alignment and
192 u64 size, u64 alignment, unsigned long color, in i915_gem_gtt_insert() argument
203 GEM_BUG_ON(alignment && !is_power_of_2(alignment)); in i915_gem_gtt_insert()
204 GEM_BUG_ON(alignment && !IS_ALIGNED(alignment, I915_GTT_MIN_ALIGNMENT)); in i915_gem_gtt_insert()
214 if (unlikely(round_up(start, alignment) > round_down(end - size, alignment))) in i915_gem_gtt_insert()
224 * so we know that we always have a minimum alignment of 4096. in i915_gem_gtt_insert()
226 * with zero alignment, so where possible use the optimal in i915_gem_gtt_insert()
230 if (alignment <= I915_GTT_MIN_ALIGNMENT) in i915_gem_gtt_insert()
231 alignment = 0; in i915_gem_gtt_insert()
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| /linux/Documentation/ABI/testing/ |
| H A D | sysfs-bus-iio-dma-buffer | 5 DMA buffers tend to have a alignment requirement for the
6 buffers. If this alignment requirement is not met samples might
9 This property reports the alignment requirements in bytes.
13 The alignment requirements in number of sample sets will depend
15 that the alignment requirement in samples sets might change
17 the alignment requirement reported in bytes by this property
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| /linux/arch/mips/cavium-octeon/executive/ |
| H A D | cvmx-bootmem.c | 128 * @alignment: Alignment required - must be power of 2
131 static void *cvmx_bootmem_alloc_range(uint64_t size, uint64_t alignment, in cvmx_bootmem_alloc_range() argument
136 cvmx_bootmem_phy_alloc(size, min_addr, max_addr, alignment, 0); in cvmx_bootmem_alloc_range()
145 uint64_t alignment) in cvmx_bootmem_alloc_address() argument
147 return cvmx_bootmem_alloc_range(size, alignment, address, in cvmx_bootmem_alloc_address()
165 void *cvmx_bootmem_alloc_named(uint64_t size, uint64_t alignment, char *name) in cvmx_bootmem_alloc_named() argument
167 return cvmx_bootmem_alloc_named_range(size, 0, 0, alignment, name); in cvmx_bootmem_alloc_named()
218 uint64_t address_max, uint64_t alignment, in cvmx_bootmem_phy_alloc() argument
235 (unsigned long long)alignment); in cvmx_bootmem_phy_alloc()
259 /* Round req_size up to mult of minimum alignment bytes */ in cvmx_bootmem_phy_alloc()
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| /linux/arch/powerpc/lib/ |
| H A D | rheap.c | 253 rh_info_t *rh_create(unsigned int alignment) in rh_create() argument
257 /* Alignment must be a power of two */ in rh_create()
258 if ((alignment & (alignment - 1)) != 0) in rh_create()
265 info->alignment = alignment; in rh_create()
300 void rh_init(rh_info_t * info, unsigned int alignment, int max_blocks, in rh_init() argument
306 /* Alignment must be a power of two */ in rh_init()
307 if ((alignment & (alignment - 1)) != 0) in rh_init()
310 info->alignment = alignment; in rh_init()
338 m = info->alignment - 1; in rh_attach_region()
383 m = info->alignment - 1; in rh_detach_region()
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| /linux/Documentation/arch/arm/ |
| H A D | mem_alignment.rst | 2 Memory alignment
6 kernel code lately. Therefore the alignment fixup is now unconditionally
13 Of course this is a bad idea to rely on the alignment trap to perform
16 alignment trap can fixup misaligned access for the exception cases, but at
19 Now for user space applications, it is possible to configure the alignment
30 To change the alignment trap behavior, simply echo a number into
31 /proc/cpu/alignment. The number is made up from various bits:
56 echo 1 > /proc/cpu/alignment
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| /linux/arch/parisc/include/asm/ |
| H A D | ldcw.h | 5 /* Because kmalloc only guarantees 8-byte alignment for kmalloc'd data,
6 and GCC only guarantees 8-byte alignment for stack locals, we can't
7 be assured of 16-byte alignment for atomic lock data even if we
16 16-byte alignment requirement for ldcw and ldcd is relaxed, and instead
17 they only require "natural" alignment (4-byte for ldcw, 8-byte for
22 require 16-byte alignment. If the address is unaligned, the operation
25 This hid the problem for years. So, restore the 16-byte alignment dropped
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| /linux/drivers/gpu/drm/i915/display/ |
| H A D | intel_fb_pin.c | 23 unsigned int alignment, in intel_fb_pin_to_dpt() argument
78 if (i915_vma_misplaced(vma, 0, alignment, 0)) { in intel_fb_pin_to_dpt()
84 ret = i915_vma_pin_ww(vma, &ww, 0, alignment, PIN_GLOBAL); in intel_fb_pin_to_dpt()
93 vma->display_alignment = max(vma->display_alignment, alignment); in intel_fb_pin_to_dpt()
107 unsigned int alignment, in intel_fb_pin_to_ggtt() argument
124 if (drm_WARN_ON(dev, alignment && !is_power_of_2(alignment))) in intel_fb_pin_to_ggtt()
132 if (intel_scanout_needs_vtd_wa(dev_priv) && alignment < 256 * 1024) in intel_fb_pin_to_ggtt()
133 alignment = 256 * 1024; in intel_fb_pin_to_ggtt()
170 vma = i915_gem_object_pin_to_display_plane(obj, &ww, alignment, in intel_fb_pin_to_ggtt()
281 unsigned int alignment = intel_plane_fb_min_alignment(plane_state); in intel_plane_pin_fb() local
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| /linux/drivers/firmware/efi/libstub/ |
| H A D | relocate.c | 11 * @align: minimum alignment of the allocated memory area. It should
36 * Enforce minimum alignment that EFI or Linux requires when in efi_low_alloc_above()
39 * alignment constraints. in efi_low_alloc_above()
96 * @alignment: minimum alignment of the allocated memory area. It
101 * to @alignment but at least EFI_ALLOC_ALIGN. If the preferred address
114 unsigned long alignment, in efi_relocate_kernel() argument
136 * as possible while respecting the required alignment. in efi_relocate_kernel()
147 status = efi_low_alloc_above(alloc_size, alignment, &new_addr, in efi_relocate_kernel()
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| /linux/drivers/gpu/drm/tests/ |
| H A D | drm_mm_test.c | 92 static u64 misalignment(struct drm_mm_node *node, u64 alignment) in misalignment() argument
96 if (!alignment) in misalignment()
99 div64_u64_rem(node->start, alignment, &rem); in misalignment()
104 u64 size, u64 alignment, unsigned long color) in assert_node() argument
119 if (misalignment(node, alignment)) { in assert_node()
121 "node is misaligned, start %llx rem %llu, expected alignment %llu\n", in assert_node()
122 node->start, misalignment(node, alignment), alignment); in assert_node()
218 struct drm_mm_node *node, u64 size, u64 alignment, unsigned long color, in expect_insert() argument
224 size, alignment, color, in expect_insert()
228 "insert (size=%llu, alignment=%llu, color=%lu, mode=%s) failed with err=%d\n", in expect_insert()
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| /linux/Documentation/core-api/ |
| H A D | unaligned-memory-access.rst | 36 Natural alignment
39 The rule mentioned above forms what we refer to as natural alignment:
43 When writing code, assume the target architecture has natural alignment
46 In reality, only a few architectures require natural alignment on all sizes
48 writing code that satisfies natural alignment requirements is the easiest way
100 Fortunately, the compiler understands the alignment constraints, so in the
126 For a natural alignment scheme, the compiler would only have to add a single
128 to satisfy alignment constraints for arrays of these structures.
137 architectural alignment requirements. However, again, the compiler is aware
138 of the alignment constraints and will generate extra instructions to perform
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| /linux/Documentation/devicetree/bindings/mtd/partitions/ |
| H A D | partition.yaml | 66 This sets the alignment of the entry in bytes.
73 an empty space may be created before the entry starts. Alignment
74 must be a power of 2. If ‘align’ is not provided, no alignment is
83 This sets the alignment of the entry size in bytes. It must be a power
90 bytes, so may grow. If ‘align-size’ is not provided, no alignment is
99 This sets the alignment (in bytes) of the end of an entry with respect
102 Some entries require that they end on an alignment boundary,
109 no alignment is performed.
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| /linux/arch/x86/ |
| H A D | Makefile | 38 # For gcc stack alignment is specified with -mpreferred-stack-boundary,
39 # clang has the option -mstack-alignment for that purpose.
43 else ifneq ($(call cc-option, -mstack-alignment=16),)
44 cc_stack_align4 := -mstack-alignment=4
45 cc_stack_align8 := -mstack-alignment=8
86 # Stack alignment mismatch, proceed with caution.
88 # (8B stack alignment).
132 # alignment of 16 bytes. This reduces stack usage and the number of
133 # alignment instructions.
168 # By default gcc and clang use a stack alignment of 16 bytes for x86.
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| /linux/arch/um/drivers/ |
| H A D | cow_user.c | 58 * Add alignment field so that different alignments can be used for the
65 * by the bitmap alignment.
67 * by the alignment field. This is to allow COW files to be
69 * /dev/raw, with a 512 byte alignment restriction. This also
79 * align size to 8-byte alignment. This shifted all fields above (no padding
92 __u32 alignment; member
104 __u32 alignment; member
198 int sectorsize, int alignment, unsigned long long *size) in write_cow_header() argument
252 header->alignment = htobe32(alignment); in write_cow_header()
347 *align_out = be32toh(header->v3.alignment); in read_cow_header()
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| /linux/mm/ |
| H A D | cma.c | 185 /* ensure minimal alignment required by mm core */ in cma_init_reserved_mem()
215 * @alignment: Alignment for the CMA area, should be power of 2 or zero
232 phys_addr_t alignment, unsigned int order_per_bit, in cma_declare_contiguous_nid() argument
247 pr_debug("%s(size %pa, base %pa, limit %pa alignment %pa)\n", in cma_declare_contiguous_nid()
248 __func__, &size, &base, &limit, &alignment); in cma_declare_contiguous_nid()
258 if (alignment && !is_power_of_2(alignment)) in cma_declare_contiguous_nid()
265 alignment = max_t(phys_addr_t, alignment, CMA_MIN_ALIGNMENT_BYTES); in cma_declare_contiguous_nid()
266 if (fixed && base & (alignment - 1)) { in cma_declare_contiguous_nid()
269 &base, &alignment); in cma_declare_contiguous_nid()
272 base = ALIGN(base, alignment); in cma_declare_contiguous_nid()
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| /linux/arch/xtensa/lib/ |
| H A D | memset.S | 30 * the alignment labels).
45 movi a6, 3 # for alignment tests
57 .align 4 # 1 mod 4 alignment for LOOPNEZ
58 .byte 0 # (0 mod 4 alignment for LBEG)
106 bbci.l a5, 0, .L20 # branch if dst alignment half-aligned
126 .byte 0 # 1 mod 4 alignment for LOOPNEZ
127 # (0 mod 4 alignment for LBEG)
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| /linux/drivers/bluetooth/ |
| H A D | hci_h4.c | 159 u8 alignment = hu->alignment ? hu->alignment : 1; in h4_recv_buf() local
255 hu->padding = (skb->len + 1) % alignment; in h4_recv_buf()
256 hu->padding = (alignment - hu->padding) % alignment; in h4_recv_buf()
263 hu->padding = (skb->len + 1) % alignment; in h4_recv_buf()
264 hu->padding = (alignment - hu->padding) % alignment; in h4_recv_buf()
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| /linux/arch/powerpc/include/asm/ |
| H A D | rheap.h | 27 unsigned int alignment; member
50 extern rh_info_t *rh_create(unsigned int alignment);
56 extern void rh_init(rh_info_t * info, unsigned int alignment, int max_blocks,
65 /* Allocate the given size from the remote heap (with alignment) */
66 extern unsigned long rh_alloc_align(rh_info_t * info, int size, int alignment,
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| /linux/block/ |
| H A D | blk-settings.c | 312 * By default there is no limit on the segment boundary alignment, in blk_validate_limits()
444 unsigned int alignment = sector_div(sector, granularity >> SECTOR_SHIFT) in queue_limit_alignment_offset() local
447 return (granularity + lim->alignment_offset - alignment) % granularity; in queue_limit_alignment_offset()
453 unsigned int alignment, granularity, offset; in queue_limit_discard_alignment() local
459 alignment = lim->discard_alignment >> SECTOR_SHIFT; in queue_limit_discard_alignment()
468 offset = (granularity + alignment - offset) % granularity; in queue_limit_discard_alignment()
494 * attempt to combine the values and ensure proper alignment.
497 * top device's block sizes and alignment offsets may be adjusted to
498 * ensure alignment with the bottom device. If no compatible sizes
506 unsigned int top, bottom, alignment, ret = 0; in blk_stack_limits() local
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| /linux/drivers/mtd/ubi/ |
| H A D | vmt.c | 34 __ATTR(alignment, S_IRUGO, vol_attribute_show, NULL);
85 ret = sprintf(buf, "%d\n", vol->alignment); in vol_attribute_show()
226 vol->usable_leb_size = ubi->leb_size - ubi->leb_size % req->alignment; in ubi_create_volume()
245 vol->alignment = req->alignment; in ubi_create_volume()
246 vol->data_pad = ubi->leb_size % vol->alignment; in ubi_create_volume()
305 vtbl_rec.alignment = cpu_to_be32(vol->alignment); in ubi_create_volume()
682 int reserved_pebs, alignment, data_pad, vol_type, name_len, upd_marker; in self_check_volume() local
700 if (vol->reserved_pebs < 0 || vol->alignment < 0 || vol->data_pad < 0 || in self_check_volume()
705 if (vol->alignment > ubi->leb_size || vol->alignment == 0) { in self_check_volume()
706 ubi_err(ubi, "bad alignment"); in self_check_volume()
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| /linux/lib/ |
| H A D | ubsan.c | 74 * SanitizerKind::Alignment emits SanitizerHandler::TypeMismatch in report_ubsan_failure()
78 return "UBSAN: alignment assumption"; in report_ubsan_failure()
354 pr_err("which requires %ld byte alignment\n", data->alignment); in handle_misaligned_access()
380 else if (data->alignment && !IS_ALIGNED(ptr, data->alignment)) in ubsan_type_mismatch_common()
394 .alignment = data->alignment, in __ubsan_handle_type_mismatch()
408 .alignment = 1UL << data->log_alignment, in __ubsan_handle_type_mismatch_v1()
517 ubsan_prologue(&data->location, "alignment-assumption"); in __ubsan_handle_alignment_assumption()
520 pr_err("assumption of %lu byte alignment (with offset of %lu byte) for pointer of type %s failed", in __ubsan_handle_alignment_assumption()
523 pr_err("assumption of %lu byte alignment for pointer of type %s failed", in __ubsan_handle_alignment_assumption()
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| /linux/include/linux/mtd/ |
| H A D | ubi.h | 52 * @alignment: volume alignment
88 * because of the volume alignment (@alignment), the usable size of logical
90 * @usable_leb_size = LEB size - (LEB size mod @alignment),
93 * The alignment is multiple to the minimal flash input/output unit size or %1
96 * To put this differently, alignment may be considered is a way to change
108 int alignment; member
159 * alignment is not equivalent to %1.
|