| /linux/Documentation/arch/arm/ |
| H A D | porting.rst | 5 Taken from list archive at http://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2001-July/00406…
8 -------------------
14 phys = virt - PAGE_OFFSET + PHYS_OFFSET
18 --------------------
25 to be located in RAM, it can be in flash or other read-only or
26 read-write addressable medium.
29 Start address of zero-initialised work area for the decompressor.
30 This must be pointing at RAM. The decompressor will zero initialise
59 --------------
72 always starts at zero, this is the maximum address that a user
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| /linux/include/linux/ |
| H A D | pagevec.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
20 * struct folio_batch - A collection of folios.
36 * folio_batch_init() - Initialise a batch of folios
39 * A freshly initialised folio_batch contains zero folios.
43 fbatch->nr = 0; in folio_batch_init()
44 fbatch->i = 0; in folio_batch_init()
45 fbatch->percpu_pvec_drained = false; in folio_batch_init()
50 fbatch->nr = 0; in folio_batch_reinit()
51 fbatch->i = 0; in folio_batch_reinit()
56 return fbatch->nr; in folio_batch_count()
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| H A D | sysctl.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
16 ** The kernel will then return -ENOTDIR to any application using
93 * with an initialised array of struct ctl_table's.
98 * The table's mode will be honoured for proc-fs access.
101 * under /proc; non-leaf nodes will be represented by directories. A
109 * mirrored under /proc/sys (non-terminals are handled by a built-in
122 return (void *)(unsigned long)atomic_read(&poll->even
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| H A D | writeback.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
12 #include <linux/backing-dev-defs.h>
31 * fs/fs-writeback.c
40 * always on the stack, and hence need no locking. They are always initialised
41 * in a manner such that unspecified fields are set to zero.
50 * For a_ops->writepages(): if start or end are non-zero then this is
61 unsigned tagged_writepages:1; /* tag-and-write to avoid livelock */
75 /* To enable batching of swap writes to non-block-device backends,
85 /* internal fields used by the ->writepages implementation: */
108 if (wbc->sync_mode == WB_SYNC_ALL) in wbc_to_write_flags()
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| /linux/drivers/media/rc/img-ir/ |
| H A D | img-ir-hw.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
5 * Copyright 2010-2014 Imagination Technologies Ltd.
12 #include <media/rc-core.h>
18 #define IMG_IR_CODETYPE_BIPHASE 0x2 /* RC-5/6 */
19 #define IMG_IR_CODETYPE_2BITPULSEPOS 0x3 /* RC-MM */
25 * struct img_ir_control - Decoder control settings
53 * struct img_ir_timing_range - range of timing values
56 * preprocessing step, so it is normally not explicitly initialised
65 * struct img_ir_symbol_timing - timing data for a symbol
75 * struct img_ir_free_timing - timing data for free time symbol
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| /linux/sound/soc/ |
| H A D | soc-card.c | 1 // SPDX-License-Identifier: GPL-2.0
3 // soc-card.c
19 case -EPROBE_DEFER: in _soc_card_ret()
20 case -ENOTSUPP: in _soc_card_ret()
24 dev_err(card->dev, in _soc_card_ret()
26 func, card->name, ret); in _soc_card_ret()
38 return snd_ctl_find_id_mixer(soc_card->snd_card, name); in snd_soc_card_get_kcontrol()
45 mutex_init(&jack->mutex); in jack_new()
46 jack->card = card; in jack_new()
47 INIT_LIST_HEAD(&jack->pins); in jack_new()
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| /linux/drivers/hid/ |
| H A D | hid-u2fzero.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * U2F Zero LED and RNG driver
6 * Loosely based on drivers/hid/hid-led.c
23 #include "hid-ids.h"
44 .name = "U2F Zero",
53 /* We only use broadcast (CID-less) messages */
63 u8 data[HID_REPORT_SIZE - 7];
67 u8 data[HID_REPORT_SIZE - 5];
97 mutex_lock(&dev->lock); in u2fzero_send()
99 memcpy(dev->buf_out, req, sizeof(struct u2f_hid_report)); in u2fzero_send()
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| /linux/include/xen/interface/io/ |
| H A D | tpmif.h | 19 * 3. Frontend populates ring-ref, event-channel, feature-protocol-v2
20 * 4. Frontend transitions to Initialised
21 * 5. Backend maps grant and event channel, verifies feature-protocol-v2
23 * 7. Frontend verifies feature-protocol-v2, transitions to Connected
48 uint8_t nr_extra_pages; /* extra pages for long packets; may be zero */
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| /linux/rust/kernel/sync/ |
| H A D | arc.rs | 1 // SPDX-License-Identifier: GPL-2.0
3 //! A reference-counted pointer.
5 //! This module implements a way for users to create reference-counted objects and pointers to
7 //! underlying object when it reaches zero. It is also safe to use concurrently from multiple
17 //! [`Arc`]: https://doc.rust-lang.org/std/sync/struct.Arc.html
39 /// A reference-counted pointer to an instance of `T`.
42 /// when they are dropped. When the count reaches zero, the underlying `T` is also dropped.
46 /// The reference count on an instance of [`Arc`] is always non-zer
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| /linux/arch/arm/mach-s3c/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
5 source "arch/arm/mach-s3c/Kconfig.s3c64xx"
29 int "S3C UART to use for low-level messages"
33 Choice of which UART port to use for the low-level messages,
35 this configuration should be between zero and two. The port
36 must have been initialised by the boot-loader before use.
106 Compile in platform device definition for USB high-speed OtG
132 pinctrl-samsung driver.
139 Compile support for wakeup-mask controls found on the S3C6400
140 and above. This code allows a set of interrupt to wakeup-mask
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| /linux/drivers/base/ |
| H A D | transport_class.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * transport_class.c - implementation of generic transport classes
6 * Copyright (c) 2005 - James Bottomley <James.Bottomley@steeleye.com>
21 * transport class<-----attribute container<----class device
23 * Usually the attribute container is per-HBA, but the design doesn't
38 * transport_class_register - register an initial transport class
40 * @tclass: a pointer to the transport class structure to be initialised
44 * zeros and then generic class must have been initialised with the
53 return class_register(&tclass->class); in transport_class_register()
58 * transport_class_unregister - unregister a previously registered class
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| /linux/rust/kernel/alloc/ |
| H A D | vec_ext.rs | |
| /linux/Documentation/devicetree/bindings/regulator/ |
| H A D | regulator.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Liam Girdwood <lgirdwood@gmail.com>
11 - Mark Brown <broonie@kernel.org>
14 regulator-name:
18 regulator-min-microvolt:
21 regulator-max-microvolt:
24 regulator-microvolt-offset:
28 regulator-min-microamp:
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| /linux/drivers/hwtracing/coresight/ |
| H A D | coresight-trace-id.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
20 * throughout a perf cs_etm event session - a session in progress flag will be
22 * complete. This allows the same CPU to be re-allocated its prior ID when
26 * Trace ID maps will be created and initialised to prevent architecturally
29 * API permits multiple maps to be maintained - for large systems where
57 * return: CoreSight trace ID or -EINVAL if allocation impossible.
115 * return: Trace ID or -EINVAL if allocation is impossible.
133 * Increase the perf session reference count - called by perf when setting up a
146 * zero, then all Trace IDs will be released.
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| /linux/include/xen/interface/ |
| H A D | memory.h | 1 /* SPDX-License-Identifier: MIT */
17 * -ve errcode on failure, or the # extents successfully allocated or freed.
43 * I/O devices often have a 32-bit limitation even in 64-bit systems). If
44 * zero then the user has no addressing restriction.
59 * An atomic exchange of memory pages. If return code is zero then
60 * @out.extent_list provides GMFNs of the newly-allocated memory.
61 * Returns zero on complete success, otherwise a negative error code.
93 * command will be non-zero.
94 * 5. THIS FIELD MUST BE INITIALISED TO ZERO BY THE CALLER!
109 * specified domain (may be DOMID_SELF). Returns -ve errcode on failure.
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| /linux/drivers/md/persistent-data/ |
| H A D | dm-bitset.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
10 #include "dm-array.h"
12 /*----------------------------------------------------------------*/
19 * Like the dm-array that it's based on, the caller needs to keep track of
20 * the size of the bitset separately. The underlying dm-array implicitly
21 * knows how many words it's storing and will return -ENODATA if you try
25 * Bits are indexed from zero.
82 * tm - the transaction manager that should supervise this structure
83 * info - the structure being initialised
89 * Create an empty, zero length bitset.
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| /linux/arch/arm64/include/asm/ |
| H A D | mmu_context.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
24 #include <asm/proc-fns.h>
102 struct mm_struct *mm = current->active_mm; in cpu_uninstall_idmap()
109 cpu_switch_mm(mm->pgd, mm); in cpu_uninstall_idmap()
126 * For a real hibernate/resume/kexec cycle TTBR0 currently points to a zero
127 * page, but TLBs may contain stale ASID-tagged entries (e.g. for EFI runtime
128 * services), while for a userspace-driven test_resume cycle it points to
129 * userspace page tables (and we must point it at a zero page ourselves).
140 /* avoid cpu_switch_mm() and its SW-PAN and CNP interactions */ in cpu_install_ttbr0()
177 atomic64_set(&mm->context.id, 0); in init_new_context()
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| /linux/drivers/md/ |
| H A D | Makefile | 1 # SPDX-License-Identifier: GPL-2.0
6 dm-mod-y += dm.o dm-table.o dm-target.o dm-linear.o dm-stripe.o \
7 dm-ioctl.o dm-io.o dm-kcopyd.o dm-sysfs.o dm-stats.o \
8 dm-rq.o dm-io-rewind.o
9 dm-multipath-y += dm-path-selector.o dm-mpath.o
10 dm-historical-service-time-y += dm-ps-historical-service-time.o
11 dm-io-affinity-y += dm-ps-io-affinity.o
12 dm-queue-length-y += dm-ps-queue-length.o
13 dm-round-robin-y += dm-ps-round-robin.o
14 dm-service-time-y += dm-ps-service-time.o
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| /linux/arch/mips/mm/ |
| H A D | context.c | 1 // SPDX-License-Identifier: GPL-2.0
94 * context-switch in flush_context()
146 * We had a valid MMID in a previous life, so try to re-use in get_new_mmid()
192 * MMID switch fast-path, to avoid acquiring cpu_mmid_lock when it's in check_switch_mmu_context()
195 * The memory ordering here is subtle. If our active_mmids is non-zero in check_switch_mmu_context()
200 * - We get a zero back from the cmpxchg and end up waiting on in check_switch_mmu_context()
205 * - We get a valid MMID back from the cmpxchg, which means the in check_switch_mmu_context()
263 TLBMISS_HANDLER_SETUP_PGD(mm->pgd); in check_switch_mmu_context()
287 pr_info("MMID allocator initialised with %u entries\n", num_mmids); in mmid_init()
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| /linux/arch/powerpc/platforms/powernv/ |
| H A D | subcore.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
32 * A core can be in one of three states, unsplit, 2-way split, and 4-way split.
37 * ------------|------------------
39 * 2-way split | 2
40 * 4-way split | 4
46 * ----------------------------
48 * ----------------------------
50 * ----------------------------
52 * 2-way split:
53 * -------------------------------------
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| /linux/Documentation/networking/ |
| H A D | dccp.rst | 1 .. SPDX-License-Identifier: GPL-2.0
9 - Introduction
10 - Missing features
11 - Socket options
12 - Sysctl variables
13 - IOCTLs
14 - Other tunables
15 - Notes
22 for real-time and multimedia (streaming) traffic.
26 implementation, this is the TCP-like CCID2 (RFC 4341). Additional CCIDs, such as
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| /linux/arch/arm64/kernel/ |
| H A D | hibernate.c | 1 // SPDX-License-Identifier: GPL-2.0-only
7 * Ubuntu project, hibernation support for mach-dove
50 /* hyp-stub vectors, used to restore el2 during resume from hibernate. */
54 * The logical cpu number we should resume on, initialised to a non-cpu
57 static int sleep_cpu = -EINVAL;
78 * re-configure el2.
88 memcpy(i->uts_version, init_utsname()->version, sizeof(i->uts_version)); in arch_hdr_invariants()
94 unsigned long nosave_end_pfn = sym_to_pfn(&__nosave_end - 1); in pfn_is_nosave()
113 return -EOVERFLOW; in arch_hibernation_header_save()
115 arch_hdr_invariants(&hdr->invariants); in arch_hibernation_header_save()
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| /linux/drivers/net/ethernet/sfc/siena/ |
| H A D | net_driver.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
4 * Copyright 2005-2006 Fen Systems Ltd.
5 * Copyright 2005-2013 Solarflare Communications Inc.
61 /* Checksum generation is a per-queue option in hardware, so each
68 #define EFX_TXQ_TYPE_HIGHPRI 4 /* High-priority (for TC) */
70 /* HIGHPRI is Siena-only, and INNER_CSUM is EF10, so no need for both */
86 #define EFX_RX_USR_BUF_SIZE (2048 - 256)
89 * of every buffer. Otherwise, we just need to ensure 4-byte
98 /* Non-standard XDP_PACKET_HEADROOM and tailroom to satisfy XDP_REDIRECT and
111 * struct efx_buffer - A general-purpose DMA buffer
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| /linux/drivers/gpu/drm/ |
| H A D | drm_encoder.c | 80 if (encoder->funcs && encoder->funcs->late_register) in drm_encoder_register_all()
81 ret = encoder->funcs->late_register(encoder); in drm_encoder_register_all()
94 if (encoder->funcs && encoder->funcs->early_unregister) in drm_encoder_unregister_all()
95 encoder->funcs->early_unregister(encoder); in drm_encoder_unregister_all()
109 if (WARN_ON(dev->mode_config.num_encoder >= 32)) in __drm_encoder_init()
110 return -EINVAL; in __drm_encoder_init()
112 ret = drm_mode_object_add(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER); in __drm_encoder_init()
116 encoder->dev = dev; in __drm_encoder_init()
117 encoder->encoder_type = encoder_type; in __drm_encoder_init()
118 encoder->funcs = funcs; in __drm_encoder_init()
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| /linux/drivers/net/wireless/intel/iwlwifi/fw/api/ |
| H A D | sta.h | 1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
3 * Copyright (C) 2012-2014, 2018-2021, 2023 Intel Corporation
4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
5 * Copyright (C) 2016-2017 Intel Deutschland GmbH
11 * enum iwl_sta_flags - flags for the ADD_STA host command
21 * @STA_FLG_MAX_AGG_SIZE_MSK: maximal size for A-MPDU (mask)
22 * @STA_FLG_MAX_AGG_SIZE_SHIFT: maximal size for A-MPDU (bit shift)
23 * @STA_FLG_MAX_AGG_SIZE_8K: maximal size for A-MPDU (8k supported)
24 * @STA_FLG_MAX_AGG_SIZE_16K: maximal size for A-MPDU (16k supported)
25 * @STA_FLG_MAX_AGG_SIZE_32K: maximal size for A-MPDU (32k supported)
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