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/linux-6.6.21/Documentation/devicetree/bindings/
Dnuma.txt36 3 - distance-map
39 The optional device tree node distance-map describes the relative
40 distance (memory latency) between all numa nodes.
42 - compatible : Should at least contain "numa-distance-map-v1".
44 - distance-matrix
47 It is represented as a list of node pairs and their relative distance.
50 1. Each entry represents distance from first node to second node.
52 2. The distance from a node to self (local distance) is represented
53 with value 10 and all internode distance should be represented with
55 3. distance-matrix should have entries in lexicographical ascending
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/linux-6.6.21/Documentation/powerpc/
Dassociativity.rst10 characteristic is presented in terms of NUMA node distance within the Linux kernel.
29 device tree properties are used to determine the NUMA distance between resource groups/domains.
42 Linux kernel computes NUMA distance between two domains by recursively comparing
44 level of the resource group, the kernel doubles the NUMA distance between the
49 Form 2 associativity format adds separate device tree properties representing NUMA node distance
50 thereby making the node distance computation flexible. Form 2 also allows flexible primary
51 domain numbering. With numa distance computation now detached from the index value in
61 used as an index while computing numa distance information via "ibm,numa-distance-table".
68 computing the distance of domain 8 from other domains present in the system. For the rest of
69 this document, this offset will be referred to as domain distance offset.
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/linux-6.6.21/arch/parisc/kernel/
Djump_label.c29 int distance = target - addr; in arch_jump_label_transform() local
36 distance -= 8; in arch_jump_label_transform()
37 BUG_ON(distance > 262143 || distance < -262144); in arch_jump_label_transform()
38 insn = 0xe8000002 | reassemble_17(distance >> 2); in arch_jump_label_transform()
/linux-6.6.21/arch/csky/lib/
Dstring.c34 int distance = 0; in memcpy() local
43 distance = s.as_uptr & WORD_MASK; in memcpy()
45 if (distance) { in memcpy()
54 s.as_u8 -= distance; in memcpy()
61 d.as_ulong[0] = last >> (distance * 8) | in memcpy()
62 next << ((BYTES_LONG - distance) * 8); in memcpy()
69 s.as_u8 += distance; in memcpy()
/linux-6.6.21/drivers/of/
Dof_numa.c98 u32 nodea, nodeb, distance; in of_numa_parse_distance_map_v1() local
104 distance = of_read_number(matrix, 1); in of_numa_parse_distance_map_v1()
107 if ((nodea == nodeb && distance != LOCAL_DISTANCE) || in of_numa_parse_distance_map_v1()
108 (nodea != nodeb && distance <= LOCAL_DISTANCE)) { in of_numa_parse_distance_map_v1()
110 nodea, nodeb, distance); in of_numa_parse_distance_map_v1()
116 numa_set_distance(nodea, nodeb, distance); in of_numa_parse_distance_map_v1()
120 numa_set_distance(nodeb, nodea, distance); in of_numa_parse_distance_map_v1()
/linux-6.6.21/Documentation/staging/
Dlzo.rst26 - a distance when copying data from the dictionary (past output buffer)
32 extra data can be a complement for the operand (eg: a length or a distance
66 taken from the last two bits of an extra operand (eg: distance).
68 End of stream is declared when a block copy of distance 0 is seen. Only one
69 instruction may encode this distance (0001HLLL), it takes one LE16 operand
70 for the distance, thus requiring 3 bytes.
133 the instruction's opcode or distance), the instruction is a copy of a
134 2-byte block from the dictionary within a 1kB distance. It is worth
139 0 0 0 0 D D S S (0..15) : copy 2 bytes from <= 1kB distance
143 distance = (H << 2) + D + 1
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/linux-6.6.21/drivers/iio/proximity/
Dmb1232.c47 s16 distance; member
66 s16 distance; in mb1232_read_distance() local
100 distance = __be16_to_cpu(buf); in mb1232_read_distance()
102 if (distance < 0) { in mb1232_read_distance()
103 dev_err(&client->dev, "distance=%d\n", distance); in mb1232_read_distance()
110 return distance; in mb1232_read_distance()
124 data->scan.distance = mb1232_read_distance(data); in mb1232_trigger_handler()
125 if (data->scan.distance < 0) in mb1232_trigger_handler()
DKconfig22 menu "Proximity and distance sensors"
78 the distance of objects. Supported types are mb1202, mb1212,
90 used to measure the distance of objects.
103 Say Y to build a driver for the RFD77402 Time-of-Flight (distance)
114 ranger sensor. This driver can be used to measure the distance
195 This driver can be used to measure the distance of objects.
217 This driver can be used to measure the distance of objects.
/linux-6.6.21/drivers/video/fbdev/
Darcfb.c249 unsigned int left, unsigned int right, unsigned int distance) in arcfb_lcd_update_page() argument
303 unsigned int distance, upper, lower; in arcfb_lcd_update_vert() local
305 distance = (bottom - top) + 1; in arcfb_lcd_update_vert()
309 while (distance > 0) { in arcfb_lcd_update_vert()
310 distance -= 8; in arcfb_lcd_update_vert()
325 unsigned int distance, upper, lower; in arcfb_lcd_update_horiz() local
327 distance = h; in arcfb_lcd_update_horiz()
329 lower = min(upper + distance - 1, ceil64(upper)); in arcfb_lcd_update_horiz()
331 while (distance > 0) { in arcfb_lcd_update_horiz()
332 distance -= ((lower - upper) + 1 ); in arcfb_lcd_update_horiz()
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/linux-6.6.21/arch/loongarch/kernel/
Dacpi.c231 void __init numa_set_distance(int from, int to, int distance) in numa_set_distance() argument
233 if ((u8)distance != distance || (from == to && distance != LOCAL_DISTANCE)) { in numa_set_distance()
235 from, to, distance); in numa_set_distance()
239 node_distances[from][to] = distance; in numa_set_distance()
/linux-6.6.21/drivers/base/
Darch_numa.c308 void __init numa_set_distance(int from, int to, int distance) in numa_set_distance() argument
318 from, to, distance); in numa_set_distance()
322 if ((u8)distance != distance || in numa_set_distance()
323 (from == to && distance != LOCAL_DISTANCE)) { in numa_set_distance()
325 from, to, distance); in numa_set_distance()
329 numa_distance[from * numa_distance_cnt + to] = distance; in numa_set_distance()
/linux-6.6.21/arch/arm64/boot/dts/hisilicon/
Dhip07-d05.dts23 distance-map {
24 compatible = "numa-distance-map-v1";
25 distance-matrix = <0 0 10>,
/linux-6.6.21/drivers/pci/
Dp2pdma.c693 int i, distance; in pci_p2pdma_distance_many() local
707 map = calc_map_type_and_dist(provider, pci_client, &distance, in pci_p2pdma_distance_many()
718 total_dist += distance; in pci_p2pdma_distance_many()
765 int distance; in pci_p2pmem_find_many() local
780 distance = pci_p2pdma_distance_many(pdev, clients, in pci_p2pmem_find_many()
782 if (distance < 0 || distance > closest_distance) in pci_p2pmem_find_many()
785 if (distance == closest_distance && dev_cnt >= max_devs) in pci_p2pmem_find_many()
788 if (distance < closest_distance) { in pci_p2pmem_find_many()
793 closest_distance = distance; in pci_p2pmem_find_many()
/linux-6.6.21/Documentation/ABI/testing/
Dsysfs-bus-iio-proximity-as39356 Get the current distance in meters of storm (1km steps)
7 1000-40000 = distance in meters
Dsysfs-kernel-mm-memory-tiers7 named by the abstract distance of the memory tier.
19 memory tier, memtierN, where N is derived based on abstract distance.
/linux-6.6.21/net/dccp/
Dackvec.c131 static void dccp_ackvec_update_old(struct dccp_ackvec *av, s64 distance, in dccp_ackvec_update_old() argument
136 BUG_ON(distance > 0); in dccp_ackvec_update_old()
143 if (distance + runlen >= 0) { in dccp_ackvec_update_old()
167 distance += runlen + 1; in dccp_ackvec_update_old()
/linux-6.6.21/Documentation/devicetree/bindings/iio/proximity/
Dmaxbotix,mb1232.yaml7 title: MaxBotix I2CXL-MaxSonar ultrasonic distance sensor
13 MaxBotix I2CXL-MaxSonar ultrasonic distance sensor of type mb1202,
Dparallax-ping.yaml16 for receiving distance value as PWM signal
34 length of the input signal corresponds to the measured distance.
/linux-6.6.21/fs/erofs/
Ddecompressor.c32 u16 distance; in z_erofs_load_lz4_config() local
39 distance = le16_to_cpu(lz4->max_distance); in z_erofs_load_lz4_config()
51 distance = le16_to_cpu(dsb->u1.lz4_max_distance); in z_erofs_load_lz4_config()
55 sbi->lz4.max_distance_pages = distance ? in z_erofs_load_lz4_config()
56 DIV_ROUND_UP(distance, PAGE_SIZE) + 1 : in z_erofs_load_lz4_config()
/linux-6.6.21/arch/x86/mm/
Dnuma.c421 void __init numa_set_distance(int from, int to, int distance) in numa_set_distance() argument
429 from, to, distance); in numa_set_distance()
433 if ((u8)distance != distance || in numa_set_distance()
434 (from == to && distance != LOCAL_DISTANCE)) { in numa_set_distance()
436 from, to, distance); in numa_set_distance()
440 numa_distance[from * numa_distance_cnt + to] = distance; in numa_set_distance()
/linux-6.6.21/Documentation/userspace-api/media/v4l/
Dpixfmt-z16.rst10 16-bit depth data with distance values at each pixel
17 distance to the respective point in the image coordinates. Distance unit
/linux-6.6.21/mm/
Dmemory-tiers.c364 int distance, best_distance; in establish_demotion_targets() local
404 distance = node_distance(node, target); in establish_demotion_targets()
405 if (distance == best_distance || best_distance == -1) { in establish_demotion_targets()
406 best_distance = distance; in establish_demotion_targets()
/linux-6.6.21/lib/
Ddecompress_unlzma.c427 uint32_t distance; in process_bit1() local
433 distance = cst->rep1; in process_bit1()
439 distance = cst->rep2; in process_bit1()
442 distance = cst->rep3; in process_bit1()
448 cst->rep0 = distance; in process_bit1()
/linux-6.6.21/net/rxrpc/
Dconn_client.c202 int id_cursor, id, distance, limit; in rxrpc_may_reuse_conn() local
224 distance = id - id_cursor; in rxrpc_may_reuse_conn()
225 if (distance < 0) in rxrpc_may_reuse_conn()
226 distance = -distance; in rxrpc_may_reuse_conn()
228 if (distance > limit) in rxrpc_may_reuse_conn()
/linux-6.6.21/drivers/nvme/host/
Dmultipath.c242 int found_distance = INT_MAX, fallback_distance = INT_MAX, distance; in __nvme_find_path() local
250 distance = node_distance(node, ns->ctrl->numa_node); in __nvme_find_path()
252 distance = LOCAL_DISTANCE; in __nvme_find_path()
256 if (distance < found_distance) { in __nvme_find_path()
257 found_distance = distance; in __nvme_find_path()
262 if (distance < fallback_distance) { in __nvme_find_path()
263 fallback_distance = distance; in __nvme_find_path()

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