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/linux/fs/romfs/
H A Dstorage.c1 // SPDX-License-Identifier: GPL-2.0-or-later
18 #define ROMFS_MTD_READ(sb, ...) mtd_read((sb)->s_mtd, ##__VA_ARGS__)
30 return (ret < 0 || rlen != buflen) ? -EIO : 0; in romfs_mtd_read()
34 * determine the length of a string in a romfs image on an MTD device
40 size_t segment; in romfs_mtd_strnlen() local
45 /* scan the string up to 16 bytes at a time */ in romfs_mtd_strnlen()
47 segment = min_t(size_t, maxlen, 16); in romfs_mtd_strnlen()
48 ret = ROMFS_MTD_READ(sb, pos, segment, &len, buf); in romfs_mtd_strnlen()
53 return n + (p - buf); in romfs_mtd_strnlen()
54 maxlen -= len; in romfs_mtd_strnlen()
[all …]
/linux/drivers/scsi/
H A Dlibiscsi_tcp.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * iSCSI over TCP/IP Data-Path lib
7 * Copyright (C) 2005 - 2006 Mike Christie
9 * maintained by open-iscsi@googlegroups.com
42 MODULE_DESCRIPTION("iSCSI/TCP data-path");
49 "module. Set to 1 to turn on, and zero to turn off. Default "
59 &(_conn)->cls_conn->dev, \
64 struct iscsi_segment *segment);
80 * iscsi_tcp_segment_init_sg - init indicated scatterlist entry
81 * @segment: the buffer object
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/linux/drivers/remoteproc/
H A Dremoteproc_coredump.c1 // SPDX-License-Identifier: GPL-2.0-only
23 * rproc_coredump_cleanup() - clean up dump_segments list
30 list_for_each_entry_safe(entry, tmp, &rproc->dump_segments, node) { in rproc_coredump_cleanup()
31 list_del(&entry->node); in rproc_coredump_cleanup()
38 * rproc_coredump_add_segment() - add segment of device memory to coredump
39 * @rproc: handle of a remote processor
41 * @size: size of segment
43 * Add device memory to the list of segments to be included in a coredump for
50 struct rproc_dump_segment *segment; in rproc_coredump_add_segment() local
52 segment = kzalloc_obj(*segment); in rproc_coredump_add_segment()
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/linux/fs/nilfs2/
H A Dsegment.h1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * NILFS Segment constructor prototypes and definitions
5 * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
22 * struct nilfs_recovery_info - Recovery information
26 * @ri_lsegs_start: Region for roll-forwarding (start block number)
27 * @ri_lsegs_end: Region for roll-forwarding (end block number)
28 * @ri_lsegs_start_seq: Sequence value of the segment at ri_lsegs_start
30 * @ri_pseg_start: Block number of the last partial segment
31 * @ri_seq: Sequence number on the last partial segment
32 * @ri_segnum: Segment number on the last partial segment
[all …]
H A Drecovery.c1 // SPDX-License-Identifier: GPL-2.0+
5 * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
16 #include "segment.h"
22 * Segment check result
54 nilfs_err(sb, "I/O error reading segment"); in nilfs_warn_segment_error()
55 return -EIO; in nilfs_warn_segment_error()
66 msg = "Checksum error in segment payload"; in nilfs_warn_segment_error()
72 msg = "No super root in the last segment"; in nilfs_warn_segment_error()
75 nilfs_err(sb, "unrecognized segment error %d", err); in nilfs_warn_segment_error()
76 return -EINVAL; in nilfs_warn_segment_error()
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H A Dthe_nilfs.h1 /* SPDX-License-Identifier: GPL-2.0+ */
5 * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
19 #include <linux/backing-dev.h>
36 * struct the_nilfs - struct to supervise multiple nilfs mount points
43 * @ns_sbh: buffer heads of on-disk super blocks
50 * @ns_seg_seq: segment sequence counter
51 * @ns_segnum: index number of the latest full segment.
52 * @ns_nextnum: index number of the full segment index to be used next
53 * @ns_pseg_offset: offset of next partial segment in the current full segment
55 * @ns_ctime: write time of the last segment
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/linux/arch/s390/mm/
H A Dextmem.c1 // SPDX-License-Identifier: GPL-2.0
80 "EW/EN-MIXED" };
87 * Create the 8 bytes, ebcdic VM segment name from
121 if (memcmp(tmp->dcss_name, dcss_name, 8) == 0) { in segment_by_name()
131 * Perform a function on a dcss segment.
158 return -ENOENT; in dcss_diag_translate_rc()
159 return -EIO; in dcss_diag_translate_rc()
163 /* do a diag to get info about a segment.
177 rc = -ENOMEM; in query_segment_type()
182 qin->qopcode = DCSS_FINDSEGA; in query_segment_type()
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/linux/drivers/md/dm-pcache/
H A Dcache_segment.c1 // SPDX-License-Identifier: GPL-2.0-or-later
11 u32 seg_id = cache_seg->segment.seg_id; in get_seg_info_addr()
14 seg_addr = CACHE_DEV_SEGMENT(cache_seg->cache->cache_dev, seg_id); in get_seg_info_addr()
15 seg_info_addr = seg_addr + PCACHE_SEG_INFO_SIZE * cache_seg->info_index; in get_seg_info_addr()
23 struct pcache_segment_info *seg_info = &cache_seg->cache_seg_info; in cache_seg_info_write()
25 mutex_lock(&cache_seg->info_lock); in cache_seg_info_write()
26 seg_info->header.seq++; in cache_seg_info_write()
27 seg_info->header.crc = pcache_meta_crc(&seg_info->header, sizeof(struct pcache_segment_info)); in cache_seg_info_write()
29 cache_seg->info_index = (cache_seg->info_index + 1) % PCACHE_META_INDEX_MAX; in cache_seg_info_write()
34 mutex_unlock(&cache_seg->info_lock); in cache_seg_info_write()
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H A Dcache.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
5 #include "segment.h"
38 /* Offset and size definitions for cache segment control */
54 #define PCACHE_CACHE_FLAGS_INIT_DONE BIT(1)
58 #define PCACHE_CACHE_MODE_WRITETHROUGH 1
79 u32 cache_seg_id; /* Index in cache->segments */
80 struct pcache_segment segment; member
124 #define PCACHE_CACHE_KEY_FLAGS_CLEAN BIT(1)
206 u32 data_crc:1;
225 return FIELD_GET(PCACHE_CACHE_FLAGS_GC_PERCENT_MASK, cache->cache_info.flags); in pcache_cache_get_gc_percent()
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/linux/include/linux/sunrpc/
H A Drpc_rdma.h1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
3 * Copyright (c) 2015-2017 Oracle. All rights reserved.
4 * Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved.
6 * This software is available to you under a choice of one of two
9 * COPYING in the main directory of this source tree, or the BSD-type
32 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
48 #define RPCRDMA_VERSION 1
61 rpcrdma_readseg_maxsz = 1 + rpcrdma_segment_maxsz,
62 rpcrdma_readchunk_maxsz = 1 + rpcrdma_readseg_maxsz,
72 ERR_VERS = 1,
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/linux/Documentation/devicetree/bindings/auxdisplay/
H A Dgpio-7-segment.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/auxdisplay/gpio-7-segment.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: GPIO based LED segment display
10 - Chris Packham <chris.packham@alliedtelesis.co.nz>
14 const: gpio-7-segment
16 segment-gpios:
18 An array of GPIOs one per segment. The first GPIO corresponds to the A
19 segment, the seventh GPIO corresponds to the G segment. Some LED blocks
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/linux/Documentation/arch/powerpc/
H A Dpci_iov_resource_on_powernv.rst19 1. Introduction to Partitionable Endpoints
22 A Partitionable Endpoint (PE) is a way to group the various resources
23 associated with a device or a set of devices to provide isolation between
24 partitions (i.e., filtering of DMA, MSIs etc.) and to provide a mechanism
25 to freeze a device that is causing errors in order to limit the possibility
28 There is thus, in HW, a table of PE states that contains a pair of "frozen"
32 When a PE is frozen, all stores in any direction are dropped and all loads
33 return all 1's value. MSIs are also blocked. There's a bit more state that
40 The following section provides a rough description of what we have on P8
42 is a completely separate HW entity that replicates the entire logic, so has
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/linux/drivers/dma/xilinx/
H A Dxilinx_dma.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (C) 2010-2014 Xilinx, Inc. All rights reserved.
10 * The AXI Video Direct Memory Access (AXI VDMA) core is a soft Xilinx IP
11 * core that provides high-bandwidth direct memory access between memory
12 * and AXI4-Stream type video target peripherals. The core provides efficient
18 * registers are accessed through an AXI4-Lite slave interface.
20 * The AXI Direct Memory Access (AXI DMA) core is a soft Xilinx IP core that
21 * provides high-bandwidth one dimensional direct memory access between memory
22 * and AXI4-Stream target peripherals. It supports one receive and one
25 * The AXI CDMA, is a soft IP, which provides high-bandwidth Direct Memory
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/linux/fs/btrfs/
H A Dlzo.c1 // SPDX-License-Identifier: GPL-2.0
29 * 1. Header
33 * 2. Segment(s)
34 * Variable size. Each segment includes one segment header, followed by data
37 * For inlined LZO compressed extent, only one segment is allowed.
38 * One segment represents at most one sector of uncompressed data.
40 * 2.1 Segment header
42 * Records the total size of the segment (not including the header).
43 * Segment header never crosses sector boundary, thus it's possible to
48 * which is 4419 for a 4KiB sectorsize.
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/linux/include/uapi/linux/
H A Dfsmap.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
34 * the first entry it knows about. For a subsequent call, the
35 * contents of fsmap_head.fmh_recs[fsmap_head.fmh_count - 1] should be
44 * fmr_device can be either a 32-bit cookie representing a device, or
45 * a 32-bit dev_t if the FMH_OF_DEV_T flag is set. fmr_physical,
47 * fmr_owner is either an inode number, or a special value if
53 __u64 fmr_physical; /* device offset of segment */
55 __u64 fmr_offset; /* file offset of segment */
56 __u64 fmr_length; /* length of segment */
84 head->fmh_keys[0] = head->fmh_recs[head->fmh_entries - 1]; in fsmap_advance()
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/linux/tools/testing/selftests/x86/
H A Dfsgsbase_restore.c1 // SPDX-License-Identifier: GPL-2.0-only
6 * This test case simulates a tracer redirecting tracee execution to
7 * a function and then restoring tracee state using PTRACE_GETREGS and
10 * modify a segment register. This makes sure that ptrace correctly
11 * restores segment state when using PTRACE_SETREGS.
13 * This is not part of fsgsbase.c, because that test is 64-bit only.
53 MAP_PRIVATE | MAP_ANONYMOUS | MAP_32BIT, -1, 0); in init_seg()
55 err(1, "mmap"); in init_seg()
64 .limit = sizeof(unsigned int) - 1, in init_seg()
65 .seg_32bit = 1, in init_seg()
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/linux/Documentation/networking/
H A Dtcp_ao.rst1 .. SPDX-License-Identifier: GPL-2.0
7 TCP Authentication Option (TCP-AO) provides a TCP extension aimed at verifying
8 segments between trusted peers. It adds a new TCP header option with
9 a Message Authentication Code (MAC). MACs are produced from the content
10 of a TCP segment using a hashing function with a password known to both peers.
11 The intent of TCP-AO is to deprecate TCP-MD5 providing better security,
12 key rotation and support for a variety of hashing algorithms.
14 1. Introduction
17 .. table:: Short and Limited Comparison of TCP-AO and TCP-MD5
19 +----------------------+------------------------+-----------------------+
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/linux/kernel/rcu/
H A Drcu_segcblist.c1 // SPDX-License-Identifier: GPL-2.0+
20 rclp->head = NULL; in rcu_cblist_init()
21 rclp->tail = &rclp->head; in rcu_cblist_init()
22 rclp->len = 0; in rcu_cblist_init()
30 *rclp->tail = rhp; in rcu_cblist_enqueue()
31 rclp->tail = &rhp->next; in rcu_cblist_enqueue()
32 WRITE_ONCE(rclp->len, rclp->len + 1); in rcu_cblist_enqueue()
37 * any contents of the first. If rhp is non-NULL, enqueue it as the sole
39 * rcu_cblist structure, if initially non-empty, always appears non-empty
47 drclp->head = srclp->head; in rcu_cblist_flush_enqueue()
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/linux/drivers/acpi/acpica/
H A Dnsaccess.c1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
4 * Module Name: nsaccess - Top-level functions for accessing ACPI namespace
51 * The global root ptr is initially NULL, so a non-NULL value indicates in acpi_ns_root_initialize()
83 * 0 _OSI Method 00203678 00 Args 1 Len 0000 Aml 00000000 in acpi_ns_root_initialize()
85 for (init_val = acpi_gbl_pre_defined_names; init_val->name; init_val++) { in acpi_ns_root_initialize()
90 if (!strcmp(init_val->name, "_OSI") in acpi_ns_root_initialize()
102 acpi_ns_create_node(*ACPI_CAST_PTR(u32, init_val->name)); in acpi_ns_root_initialize()
108 new_node->descriptor_type = ACPI_DESC_TYPE_NAMED; in acpi_ns_root_initialize()
109 new_node->type = init_val->type; in acpi_ns_root_initialize()
114 prev_node->peer = new_node; in acpi_ns_root_initialize()
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/linux/Documentation/filesystems/
H A Dnilfs2.rst1 .. SPDX-License-Identifier: GPL-2.0
7 NILFS2 is a log-structured file system (LFS) supporting continuous
10 destroyed just a few seconds ago. Since NILFS2 can keep consistency
14 NILFS2 creates a number of checkpoints every few seconds or per
21 full. Each snapshot is mountable as a read-only file system
25 The userland tools are included in nilfs-utils package, which is
33 :List info: http://vger.kernel.org/vger-lists.html#linux-nilfs
40 - atime
41 - extended attributes
42 - POSIX ACLs
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/linux/rust/syn/
H A Dpath.rs1 // SPDX-License-Identifier: Apache-2.0 OR MIT
14 /// A path at which a named item is exported (e.g. `std::collections::HashMap`).
26 fn from(segment: T) -> Self { in from()
31 path.segments.push_value(segment.into()); in from()
37 /// Determines whether this is a path of length 1 equal to the given
42 /// - the path has no leading colon,
43 /// - the number of path segments is 1,
44 /// - the first path segment has no angle bracketed or parenthesized
46 /// - the ident of the first path segment is equal to the given one.
54 /// fn get_serde_meta_item(attr: &Attribute) -> Result<Option<&TokenStream>> {
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/linux/arch/x86/math-emu/
H A Dget_address.c1 // SPDX-License-Identifier: GPL-2.0
2 /*---------------------------------------------------------------------------+
9 | Australia. E-mail billm@suburbia.net |
12 +---------------------------------------------------------------------------*/
14 /*---------------------------------------------------------------------------+
19 +---------------------------------------------------------------------------*/
43 #define REG_(x) (*(long *)(reg_offset[(x)] + (u_char *)FPU_info->regs))
56 (reg_offset_vm86[((unsigned)x)] + (u_char *)FPU_info->regs))
69 (reg_offset_pm[((unsigned)x)] + (u_char *)FPU_info->regs))
78 FPU_code_access_ok(1); in sib()
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/linux/arch/s390/include/asm/
H A Dpgtable.h1 /* SPDX-License-Identifier: GPL-2.0 */
9 * Derived from "include/asm-i386/pgtable.h"
18 #include <linux/page-flags.h>
20 #include <linux/radix-tree.h>
57 * ZERO_PAGE is a global shared page that is always zero; used
58 * for zero-mapped memory areas etc..
85 * At the top of the vmalloc area a 2GB area is reserved where modules
87 * happen without trampolines and in addition the placement within a
92 #define VMALLOC_DEFAULT_SIZE ((512UL << 30) - MODULES_LEN)
100 #define MODULES_LEN (1UL << 31)
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/linux/drivers/net/ethernet/intel/ice/
H A Dice_ddp.c1 // SPDX-License-Identifier: GPL-2.0
27 * ice_verify_pkg - verify package
32 * version, and the requirement of at least one segment.
39 if (len < struct_size(pkg, seg_offset, 1)) in ice_verify_pkg()
42 if (pkg->pkg_format_ver.major != ICE_PKG_FMT_VER_MAJ || in ice_verify_pkg()
43 pkg->pkg_format_ver.minor != ICE_PKG_FMT_VER_MNR || in ice_verify_pkg()
44 pkg->pkg_format_ver.update != ICE_PKG_FMT_VER_UPD || in ice_verify_pkg()
45 pkg->pkg_format_ver.draft != ICE_PKG_FMT_VER_DFT) in ice_verify_pkg()
48 /* pkg must have at least one segment */ in ice_verify_pkg()
49 seg_count = le32_to_cpu(pkg->seg_count); in ice_verify_pkg()
[all …]
/linux/drivers/infiniband/hw/hfi1/
H A Deprom.c1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
14 * partition 1: 4K config file (sector size)
24 #define EP_PAGE_MASK (EP_PAGE_SIZE - 1)
44 * Read a 256 byte (64 dword) EPROM page.
45 * All callers have verified the offset is at a page boundary.
75 * command address range. Note that '>' is correct below - the end in read_length()
78 if (end > (1 << CMD_SHIFT)) in read_length()
79 return -EINVAL; in read_length()
91 bytes = EP_PAGE_SIZE - start_offset; in read_length()
102 len -= bytes; in read_length()
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