| /linux-6.12.1/include/linux/ |
| D | clocksource.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
36 * struct clocksource - hardware abstraction for a free running counter
37 * Provides mostly state-free accessors to the underlying hardware.
40 * @read: Returns a cycle value, passes clocksource as argument
46 * @maxadj: Maximum adjustment value to mult (~11%)
49 * @archdata: Optional arch-specific data
50 * @max_cycles: Maximum safe cycle value which won't overflow on
55 * @rating: Rating value for selection (higher is better)
59 * 1-99: Unfit for real use
61 * 100-199: Base level usability.
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| D | power_supply.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
226 /* Run-time specific power supply configuration */
354 * struct power_supply_maintenance_charge_table - setting for maintenace charging
387 * +-------------------------------------------------------------------> t
389 * Practically this means that the Li-ions are wandering back and forth in the
400 * +-------------------------------------------------------------------> t
411 * As an example, a Samsung EB425161LA Lithium-Ion battery is CC/CV charged
426 * the expected stand-by current. Also overvoltage protection will be applied
438 * struct power_supply_battery_info - information about batteries
455 * the precharge rate is limited by limiting the current to this value.
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| /linux-6.12.1/Documentation/timers/ |
| D | timekeeping.rst | 10 If you grep through the kernel source you will find a number of architecture-
12 architecture-specific overrides of the sched_clock() function and some
17 on this timeline, providing facilities such as high-resolution timers.
23 -------------
31 n bits which count from 0 to (2^n)-1 and then wraps around to 0 and start over.
36 shall be as stable and correct as possible as compared to a real-world wall
46 When the wall-clock accuracy of the clock source isn't satisfactory, there
48 the user-visible time to RTC clocks in the system or against networked time
55 into a nanosecond value as an unsigned long long (unsigned 64 bit) number.
58 possible to a nanosecond value using only the arithmetic operations
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| /linux-6.12.1/Documentation/devicetree/bindings/iio/temperature/ |
| D | adi,ltc2983.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Analog Devices LTC2983, LTC2986, LTM2985 Multi-sensor Temperature system
10 - Nuno Sá <nuno.sa@analog.com>
13 Analog Devices LTC2983, LTC2984, LTC2986, LTM2985 Multi-Sensor Digital
16 https://www.analog.com/media/en/technical-documentation/data-sheets/2983fc.pdf
17 https://www.analog.com/media/en/technical-documentation/data-sheets/2984fb.pdf
18 https://www.analog.com/media/en/technical-documentation/data-sheets/29861fa.pdf
19 https://www.analog.com/media/en/technical-documentation/data-sheets/ltm2985.pdf
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| /linux-6.12.1/net/ipv4/ |
| D | tcp_nv.c | 1 // SPDX-License-Identifier: GPL-2.0-only
5 * TCP-NV is a successor of TCP-Vegas that has been developed to
7 * Like TCP-Vegas, TCP-NV supports true congestion avoidance,
9 * When congestion (queue buildup) starts to occur, TCP-NV
22 * seen issues with rx-frames values greater than 8.
41 * nv_rtt_factor RTT averaging factor
46 * slow-start due to congestion
47 * nv_stop_rtt_cnt Only grow cwnd for this many RTTs after non-congestion
52 * congested. One value (nv_cwnd_growth_rate_neg) for when
78 MODULE_PARM_DESC(nv_min_cwnd, "NV will not decrease cwnd below this value"
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| D | tcp_output.c | 1 // SPDX-License-Identifier: GPL-2.0-only
12 * Corey Minyard <wf-rch!minyard@relay.EU.net>
13 * Florian La Roche, <flla@stud.uni-sb.de>
33 * Cacophonix Gaul : draft-minshall-nagle-01
59 tp->tcp_clock_cache = val; in tcp_mstamp_refresh()
60 tp->tcp_mstamp = div_u64(val, NSEC_PER_USEC); in tcp_mstamp_refresh()
71 unsigned int prior_packets = tp->packets_out; in tcp_event_new_data_sent()
73 WRITE_ONCE(tp->snd_nxt, TCP_SKB_CB(skb)->end_seq); in tcp_event_new_data_sent()
75 __skb_unlink(skb, &sk->sk_write_queue); in tcp_event_new_data_sent()
76 tcp_rbtree_insert(&sk->tcp_rtx_queue, skb); in tcp_event_new_data_sent()
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| D | tcp_input.c | 1 // SPDX-License-Identifier: GPL-2.0
12 * Corey Minyard <wf-rch!minyard@relay.EU.net>
13 * Florian La Roche, <flla@stud.uni-sb.de>
62 * Pasi Sarolahti: F-RTO for dealing with spurious RTOs
98 #define FLAG_DSACKING_ACK 0x800 /* SACK blocks contained D-SACK info */
116 #define REXMIT_NEW 2 /* FRTO-style transmit of unsent/new packets */
124 icsk->icsk_clean_acked = cad; in clean_acked_data_enable()
132 icsk->icsk_clean_acked = NULL; in clean_acked_data_disable()
146 bool unknown_opt = tcp_sk(sk)->rx_opt.saw_unknown && in bpf_skops_parse_hdr()
160 switch (sk->sk_state) { in bpf_skops_parse_hdr()
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| /linux-6.12.1/drivers/iio/adc/ |
| D | ab8500-gpadc.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) ST-Ericsson SA 2010
54 /* 0 = use VTVOUT, 1 = use VRTC as pull-up supply for battery temp NTC */
63 * the bit layout is the same for SW and HW conversion set-up
163 #define AB8500_ADC_CH_IBAT_MIN (-6000) /* mA range measured by ADC for ibat */
165 #define AB8500_ADC_CH_IBAT_MIN_V (-60) /* mV range measured by ADC for ibat */
167 #define AB8500_GPADC_IBAT_VDROP_L (-56) /* mV */
192 * struct ab8500_adc_cal_data - Table for storing gain and offset for the
207 * struct ab8500_gpadc_chan_info - per-channel GPADC info
230 * struct ab8500_gpadc - AB8500 GPADC device information
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| /linux-6.12.1/drivers/media/radio/si470x/ |
| D | radio-si470x-common.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * drivers/media/radio/si470x/radio-si470x-common.c
14 * 2008-01-12 Tobias Lorenz <tobias.lorenz@gmx.net>
16 * - First working version
17 * 2008-01-13 Tobias Lorenz <tobias.lorenz@gmx.net>
19 * - Improved error handling, every function now returns errno
20 * - Improved multi user access (start/mute/stop)
21 * - Channel doesn't get lost anymore after start/mute/stop
22 * - RDS support added (polling mode via interrupt EP 1)
23 * - marked default module parameters with *value*
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| /linux-6.12.1/drivers/gpu/drm/ |
| D | drm_modes.c | 2 * Copyright © 1997-2003 by The XFree86 Project, Inc.
4 * Copyright © 2007-2008 Intel Corporation
6 * Copyright 2005-2006 Luc Verhaegen
53 * drm_mode_debug_printmodeline - print a mode to dmesg
65 * drm_mode_create - create a new display mode
87 * drm_mode_destroy - remove a mode
103 * drm_mode_probed_add - add a mode to a connector's probed_mode list
114 WARN_ON(!mutex_is_locked(&connector->dev->mode_config.mutex)); in drm_mode_probed_add()
116 list_add_tail(&mode->head, &connector->probed_modes); in drm_mode_probed_add()
127 * - https://web.archive.org/web/20220406232708/http://www.kolumbus.fi/pami1/video/pal_ntsc.html
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| /linux-6.12.1/Documentation/core-api/ |
| D | workqueue.rst | 33 thread system-wide. A single MT wq needed to keep around the same
60 * Use per-CPU unified worker pools shared by all wq to provide
85 worker-pools.
87 The cmwq design differentiates between the user-facing workqueues that
89 which manages worker-pools and processes the queued work items.
91 There are two worker-pools, one for normal work items and the other
93 worker-pools to serve work items queued on unbound workqueues - the
98 Each per-CPU BH worker pool contains only one pseudo worker which represents
110 When a work item is queued to a workqueue, the target worker-pool is
112 and appended on the shared worklist of the worker-pool. For example,
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| /linux-6.12.1/drivers/clk/renesas/ |
| D | r9a06g032-clocks.c | 1 // SPDX-License-Identifier: GPL-2.0
11 #include <linux/clk-provider.h>
24 #include <linux/soc/renesas/r9a06g032-sysctrl.h>
26 #include <dt-bindings/clock/r9a06g032-sysctrl.h>
33 * struct regbit - describe one bit in a register
35 * expressed in units of 32-bit words (not bytes),
43 * Since registers are aligned on 32-bit boundaries, the
44 * offset will be specified in 32-bit words rather than bytes.
48 * offset from bytes to 32-bit words.
61 * struct r9a06g032_gate - clock-related control bits
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| /linux-6.12.1/Documentation/admin-guide/media/ |
| D | vivid.rst | 1 .. SPDX-License-Identifier: GPL-2.0
13 Each input can be a webcam, TV capture device, S-Video capture device or an HDMI
14 capture device. Each output can be an S-Video output device or an HDMI output
23 - Support for read()/write(), MMAP, USERPTR and DMABUF streaming I/O.
24 - A large list of test patterns and variations thereof
25 - Working brightness, contrast, saturation and hue controls
26 - Support for the alpha color component
27 - Full colorspace support, including limited/full RGB range
28 - All possible control types are present
29 - Support for various pixel aspect ratios and video aspect ratios
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| /linux-6.12.1/kernel/rcu/ |
| D | srcutree.c | 1 // SPDX-License-Identifier: GPL-2.0+
3 * Sleepable Read-Copy Update mechanism for mutual exclusion.
11 * For detailed explanation of Read-Copy Update mechanism see -
33 /* Holdoff in nanoseconds for auto-expediting. */
38 /* Overflow-check frequency. N bits roughly says every 2**N grace periods. */
63 /* Number of CPUs to trigger init_srcu_struct()-time transition to big. */
71 /* Early-boot callback-management, so early that no lock is required! */
117 * Initialize SRCU per-CPU data. Note that statically allocated
120 * is set, don't initialize ->srcu_lock_count[] and ->srcu_unlock_count[].
128 * Initialize the per-CPU srcu_data array, which feeds into the in init_srcu_struct_data()
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| /linux-6.12.1/drivers/iio/temperature/ |
| D | ltc2983.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * Analog Devices LTC2983 Multi-Sensor Digital Temperature Measurement System
60 (((chan - 1) * 4) + LTC2983_CHAN_ASSIGN_START_REG)
62 (((chan - 1) * 4) + LTC2983_TEMP_RES_START_REG)
312 * instance a resolution of 2^-10 means we have 10 fractional bits.
326 s64 __res = -(s32)val; in __convert_to_raw_sign()
330 return (u32)-__res; in __convert_to_raw_sign()
337 const struct device *dev = &st->spi->dev; in __ltc2983_fault_handler()
341 return -EIO; in __ltc2983_fault_handler()
354 u32 reg = LTC2983_CHAN_START_ADDR(sensor->chan); in __ltc2983_chan_assign_common()
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| /linux-6.12.1/arch/x86/crypto/ |
| D | aes-gcm-aesni-x86_64.S | 1 /* SPDX-License-Identifier: Apache-2.0 OR BSD-2-Clause */
3 // AES-NI optimized AES-GCM for x86_64
9 //------------------------------------------------------------------------------
11 // This file is dual-licensed, meaning that you can use it under your choice of
17 // http://www.apache.org/licenses/LICENSE-2.0
49 //------------------------------------------------------------------------------
51 // This file implements AES-GCM (Galois/Counter Mode) for x86_64 CPUs that
52 // support the original set of AES instructions, i.e. AES-NI. Two
55 // that the AVX implementation takes advantage of VEX-coded instructions in some
57 // implementation does *not* use 256-bit vectors, as AES is not supported on
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| /linux-6.12.1/drivers/gpu/drm/amd/display/dc/basics/ |
| D | dce_calcs.c | 36 * This file is gcc-parseable HW gospel, coming straight from HW engineers.
40 * remain as-is as it provides us with a guarantee from HW that it is correct.
139 yclk[low] = vbios->low_yclk; in calculate_bandwidth()
140 yclk[mid] = vbios->mid_yclk; in calculate_bandwidth()
141 yclk[high] = vbios->high_yclk; in calculate_bandwidth()
142 sclk[s_low] = vbios->low_sclk; in calculate_bandwidth()
143 sclk[s_mid1] = vbios->mid1_sclk; in calculate_bandwidth()
144 sclk[s_mid2] = vbios->mid2_sclk; in calculate_bandwidth()
145 sclk[s_mid3] = vbios->mid3_sclk; in calculate_bandwidth()
146 sclk[s_mid4] = vbios->mid4_sclk; in calculate_bandwidth()
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| /linux-6.12.1/kernel/sched/ |
| D | fair.c | 1 // SPDX-License-Identifier: GPL-2.0
43 #include <linux/memory-tiers.h>
59 * The initial- and re-scaling of tunables is configurable
63 * SCHED_TUNABLESCALING_NONE - unscaled, always *1
64 * SCHED_TUNABLESCALING_LOG - scaled logarithmically, *1+ilog(ncpus)
65 * SCHED_TUNABLESCALING_LINEAR - scaled linear, *ncpus
72 * Minimal preemption granularity for CPU-bound tasks:
94 return -cpu; in arch_asym_cpu_priority()
115 * Amount of runtime to allocate from global (tg) to local (per-cfs_rq) pool
166 lw->weight += inc; in update_load_add()
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| /linux-6.12.1/sound/soc/codecs/ |
| D | wm8996.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * wm8996.c - WM8996 audio codec interface
5 * Copyright 2011-2 Wolfson Microelectronics PLC.
108 regcache_mark_dirty(wm8996->regmap); \
299 static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -3600, 150, 0);
300 static const DECLARE_TLV_DB_SCALE(digital_tlv, -7200, 75, 1);
301 static const DECLARE_TLV_DB_SCALE(out_digital_tlv, -1200, 150, 0);
302 static const DECLARE_TLV_DB_SCALE(out_tlv, -900, 75, 0);
303 static const DECLARE_TLV_DB_SCALE(spk_tlv, -900, 150, 0);
304 static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
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| /linux-6.12.1/mm/ |
| D | vmscan.c | 1 // SPDX-License-Identifier: GPL-2.0
31 #include <linux/backing-dev.h>
45 #include <linux/memory-tiers.h>
97 /* Swappiness value for proactive reclaim. Always use sc_swappiness()! */
189 if ((_folio)->lru.prev != _base) { \
192 prev = lru_to_folio(&(_folio->lru)); \
193 prefetchw(&prev->_field); \
210 return sc->target_mem_cgroup; in cgroup_reclaim()
219 return !sc->target_mem_cgroup || mem_cgroup_is_root(sc->target_mem_cgroup); in root_reclaim()
223 * writeback_throttling_sane - is the usual dirty throttling mechanism available?
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| /linux-6.12.1/drivers/md/dm-vdo/ |
| D | dedupe.c | 1 // SPDX-License-Identifier: GPL-2.0-only
19 * to that zone. The concurrency guarantees of this single-threaded model allow the code to omit
20 * more fine-grained locking for the hash_lock structures.
37 * The existence of lock waiters is a key factor controlling which state the lock transitions to
51 * The shortest sequence of states is for non-concurrent writes of new data:
52 * INITIALIZING -> QUERYING -> WRITING -> BYPASSING
55 * Non-concurrent, finding valid advice looks like this (endpoints elided):
56 * -> QUERYING -> LOCKING -> VERIFYING -> DEDUPING -> UNLOCKING ->
58 * -> QUERYING -> LOCKING -> VERIFYING -> UNLOCKING -> WRITING -> UPDATING ->
68 * non-endpoint states can be re-entered.
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| /linux-6.12.1/Documentation/RCU/Design/Requirements/ |
| D | Requirements.rst | 16 ------------
18 Read-copy update (RCU) is a synchronization mechanism that is often used
19 as a replacement for reader-writer locking. RCU is unusual in that
20 updaters do not block readers, which means that RCU's read-side
28 thought of as an informal, high-level specification for RCU. It is
40 #. `Fundamental Non-Requirements`_
42 #. `Quality-of-Implementation Requirements`_
44 #. `Software-Engineering Requirements`_
53 ------------------------
58 #. `Grace-Period Guarantee`_
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| /linux-6.12.1/include/linux/platform_data/ |
| D | cros_ec_commands.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
7 * NOTE: This file is auto-generated from ChromeOS EC Open Source code from
52 * The actual block is 0x800-0x8ff, but some BIOSes think it's 0x880-0x8ff
77 #define EC_MEMMAP_TEMP_SENSOR 0x00 /* Temp sensors 0x00 - 0x0f */
78 #define EC_MEMMAP_FAN 0x10 /* Fan speeds 0x10 - 0x17 */
79 #define EC_MEMMAP_TEMP_SENSOR_B 0x18 /* More temp sensors 0x18 - 0x1f */
81 #define EC_MEMMAP_ID_VERSION 0x22 /* Version of data in 0x20 - 0x2f */
82 #define EC_MEMMAP_THERMAL_VERSION 0x23 /* Version of data in 0x00 - 0x1f */
83 #define EC_MEMMAP_BATTERY_VERSION 0x24 /* Version of data in 0x40 - 0x7f */
84 #define EC_MEMMAP_SWITCHES_VERSION 0x25 /* Version of data in 0x30 - 0x33 */
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| /linux-6.12.1/include/uapi/linux/ |
| D | nl80211.h | 6 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
13 * Copyright 2015-2017 Intel Deutschland GmbH
14 * Copyright (C) 2018-2024 Intel Corporation
32 * be careful not to break things - i.e. don't move anything around or so
74 * - a setup station entry is added, not yet authorized, without any rate
76 * - when the TDLS setup is done, a single NL80211_CMD_SET_STATION is valid
79 * - %NL80211_TDLS_ENABLE_LINK is then used
80 * - after this, the only valid operation is to remove it by tearing down
95 * Frame registration is done on a per-interface basis and registrations
137 * software, like the AP-VLAN type in mac80211 for example, there's
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| /linux-6.12.1/block/ |
| D | bfq-iosched.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
16 * BFQ is a proportional-share I/O scheduler, with some extra
17 * low-latency capabilities. BFQ also supports full hierarchical
20 * limitations can be found in Documentation/block/bfq-iosched.rst.
22 * BFQ is a proportional-share storage-I/O scheduling algorithm based
23 * on the slice-by-slice service scheme of CFQ. But BFQ assigns
25 * time slices. The device is not granted to the in-service process
31 * B-WF2Q+, to schedule processes according to their budgets. More
33 * process/queue is assigned a user-configurable weight, and B-WF2Q+
36 * B-WF2Q+, BFQ can afford to assign high budgets to I/O-bound
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