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/linux-6.8/Documentation/devicetree/bindings/power/reset/
Dgpio-restart.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/power/reset/gpio-restart.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Sebastian Reichel <sre@kernel.org>
17 'open-source' is not found, the GPIO line will be driven in the inactive state. Otherwise its
22 This will also cause an inactive->active edge condition, triggering positive edge triggered
23 reset. After a delay specified by active-delay, the GPIO is set to inactive, thus causing an
24 active->inactive edge, triggering negative edge triggered reset. After a delay specified by
25 inactive-delay, the GPIO is driven active again. After a delay specified by wait-delay, the
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Dgpio-poweroff.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/power/reset/gpio-poweroff.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Sebastian Reichel <sre@kernel.org>
15 from inactive to active. After a delay (active-delay-ms) it
16 is expected to be switched back to inactive. After another
17 delay (inactive-delay-ms) it is configured as active again.
19 the system is still running after waiting some time (timeout-ms).
22 - $ref: restart-handler.yaml#
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/linux-6.8/mm/
Dworkingset.c1 // SPDX-License-Identifier: GPL-2.0
24 * inactive and the active list. Freshly faulted pages start out at
25 * the head of the inactive list and page reclaim scans pages from the
26 * tail. Pages that are accessed multiple times on the inactive list
28 * whereas active pages are demoted to the inactive list when the
31 * fault ------------------------+
33 * +--------------+ | +-------------+
34 * reclaim <- | inactive | <-+-- demotion | active | <--+
35 * +--------------+ +-------------+ |
37 * +-------------- promotion ------------------+
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Dswap.c1 // SPDX-License-Identifier: GPL-2.0-only
10 * Linux VM subsystem. Fine-tuning documentation can be found in
11 * Documentation/admin-guide/sysctl/vm.rst.
32 #include <linux/backing-dev.h>
78 * This path almost never happens for VM activity - pages are normally freed
79 * in batches. But it gets used by networking - and for compound pages.
97 zone_stat_mod_folio(folio, NR_MLOCK, -nr_pages); in __page_cache_release()
106 free_unref_page(&folio->page, 0); in __folio_put_small()
125 free_zone_device_page(&folio->page); in __folio_put()
134 * put_pages_list() - release a list of pages
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/linux-6.8/kernel/bpf/
Dbpf_lru_list.c1 // SPDX-License-Identifier: GPL-2.0-only
17 #define LOCAL_LIST_IDX(t) ((t) - BPF_LOCAL_LIST_T_OFFSET)
33 return &loc_l->lists[LOCAL_FREE_LIST_IDX]; in local_free_list()
38 return &loc_l->lists[LOCAL_PENDING_LIST_IDX]; in local_pending_list()
44 return READ_ONCE(node->ref); in bpf_lru_node_is_ref()
49 WRITE_ONCE(node->ref, 0); in bpf_lru_node_clear_ref()
56 l->counts[type]++; in bpf_lru_list_count_inc()
63 l->counts[type]--; in bpf_lru_list_count_dec()
71 if (WARN_ON_ONCE(IS_LOCAL_LIST_TYPE(node->type))) in __bpf_lru_node_move_to_free()
77 if (&node->list == l->next_inactive_rotation) in __bpf_lru_node_move_to_free()
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/linux-6.8/drivers/power/reset/
Dgpio-restart.c1 // SPDX-License-Identifier: GPL-2.0-only
7 * Based on the gpio-poweroff driver.
27 struct gpio_restart *gpio_restart = data->cb_data; in gpio_restart_notify()
29 /* drive it active, also inactive->active edge */ in gpio_restart_notify()
30 gpiod_direction_output(gpio_restart->reset_gpio, 1); in gpio_restart_notify()
31 mdelay(gpio_restart->active_delay_ms); in gpio_restart_notify()
33 /* drive inactive, also active->inactive edge */ in gpio_restart_notify()
34 gpiod_set_value(gpio_restart->reset_gpio, 0); in gpio_restart_notify()
35 mdelay(gpio_restart->inactive_delay_ms); in gpio_restart_notify()
37 /* drive it active, also inactive->active edge */ in gpio_restart_notify()
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Dgpio-poweroff.c1 // SPDX-License-Identifier: GPL-2.0-only
31 struct gpio_poweroff *gpio_poweroff = data->cb_data; in gpio_poweroff_do_poweroff()
33 /* drive it active, also inactive->active edge */ in gpio_poweroff_do_poweroff()
34 gpiod_direction_output(gpio_poweroff->reset_gpio, 1); in gpio_poweroff_do_poweroff()
35 mdelay(gpio_poweroff->active_delay_ms); in gpio_poweroff_do_poweroff()
37 /* drive inactive, also active->inactive edge */ in gpio_poweroff_do_poweroff()
38 gpiod_set_value_cansleep(gpio_poweroff->reset_gpio, 0); in gpio_poweroff_do_poweroff()
39 mdelay(gpio_poweroff->inactive_delay_ms); in gpio_poweroff_do_poweroff()
41 /* drive it active, also inactive->active edge */ in gpio_poweroff_do_poweroff()
42 gpiod_set_value_cansleep(gpio_poweroff->reset_gpio, 1); in gpio_poweroff_do_poweroff()
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/linux-6.8/arch/arm/mach-omap2/
Dcm.h1 /* SPDX-License-Identifier: GPL-2.0-only */
5 * Copyright (C) 2007-2009, 2012 Texas Instruments, Inc.
6 * Copyright (C) 2007-2009 Nokia Corporation
15 * PRCM to request that a module exit the inactive state in the case of
18 * module to reach the functionnal state from an inactive state.
25 #include "prcm-common.h"
33 * the PRCM to request that a module enter the inactive state in the
35 * in microseconds for the module to reach the inactive state from
45 * struct cm_ll_data - fn ptrs to per-SoC CM function implementations
46 * @split_idlest_reg: ptr to the SoC CM-specific split_idlest_reg impl
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/linux-6.8/Documentation/devicetree/bindings/input/
Dgpio-matrix-keypad.txt6 keypad can sense a key-press and key-release by means of GPIO lines and
10 - compatible: Should be "gpio-matrix-keypad"
11 - row-gpios: List of gpios used as row lines. The gpio specifier
14 - col-gpios: List of gpios used as column lines. The gpio specifier
17 - linux,keymap: The definition can be found at
18 bindings/input/matrix-keymap.txt
21 - linux,no-autorepeat: do no enable autorepeat feature.
22 - wakeup-source: use any event on keypad as wakeup event.
24 - debounce-delay-ms: debounce interval in milliseconds
25 - col-scan-delay-us: delay, measured in microseconds, that is needed
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/linux-6.8/Documentation/devicetree/bindings/sound/
Ddavinci-mcasp-audio.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/sound/davinci-mcasp-audio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jayesh Choudhary <j-choudhary@ti.com>
15 - ti,dm646x-mcasp-audio
16 - ti,da830-mcasp-audio
17 - ti,am33xx-mcasp-audio
18 - ti,dra7-mcasp-audio
19 - ti,omap4-mcasp-audio
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/linux-6.8/Documentation/admin-guide/pm/
Dstrategies.rst1 .. SPDX-License-Identifier: GPL-2.0
13 The Linux kernel supports two major high-level power management strategies.
15 One of them is based on using global low-power states of the whole system in
17 significantly reduced, referred to as :doc:`sleep states <sleep-states>`. The
23 :doc:`system-wide power management <system-wide>`.
25 The other strategy, referred to as the :doc:`working-state power management
26 <working-state>`, is based on adjusting the power states of individual hardware
32 ``inactive`` (idle). If they are active, they have to be in power states
34 are inactive, ideally, they should be in low-power states in which they may not
39 draw (or maximum energy usage) of it. If all of them are inactive, the system
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/linux-6.8/Documentation/scheduler/
Dsched-deadline.rst12 3. Scheduling Real-Time Tasks
18 4.1 System-wide settings
33 system behavior. As for -rt (group) scheduling, it is assumed that root users
50 ------------------
70 with the "traditional" real-time task model (see Section 3) can effectively
76 - Each SCHED_DEADLINE task is characterized by the "runtime",
79 - The state of the task is described by a "scheduling deadline", and
82 - When a SCHED_DEADLINE task wakes up (becomes ready for execution),
86 ---------------------------------- > ---------
87 scheduling deadline - current time period
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/linux-6.8/include/uapi/linux/
Ddm-ioctl.h1 /* SPDX-License-Identifier: LGPL-2.0+ WITH Linux-syscall-note */
3 * Copyright (C) 2001 - 2003 Sistina Software (UK) Limited.
4 * Copyright (C) 2004 - 2009 Red Hat, Inc. All rights reserved.
25 * through the device, and an 'inactive' one which is a table
39 * Create a new device, neither the 'active' or 'inactive' table
42 * since it will be out-of-bounds.
57 * unsuspended device. If a table is present in the 'inactive'
71 * Load a table into the 'inactive' slot for the device. The
75 * Destroy any table in the 'inactive' slot (ie. abort).
106 * major - no backward or forward compatibility,
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/linux-6.8/drivers/spi/
Dspi-bitbang-txrx.h1 /* SPDX-License-Identifier: GPL-2.0 */
4 * simple SPI master driver. Two do polled word-at-a-time I/O:
6 * - GPIO/parport bitbangers. Provide chipselect() and txrx_word[](),
7 * expanding the per-word routines from the inline templates below.
9 * - Drivers for controllers resembling bare shift registers. Provide
15 * - Drivers leveraging smarter hardware, with fifos or DMA; or for half
36 * A non-inlined routine would call bitbang_txrx_*() routines. The
55 u32 oldbit = (!(word & (1<<(bits-1)))) << 31; in bitbang_txrx_be_cpha0()
56 /* clock starts at inactive polarity */ in bitbang_txrx_be_cpha0()
57 for (word <<= (32 - bits); likely(bits); bits--) { in bitbang_txrx_be_cpha0()
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/linux-6.8/drivers/net/ethernet/intel/ice/
Dice_nvm.c1 // SPDX-License-Identifier: GPL-2.0
32 return -EINVAL; in ice_aq_read_nvm()
37 cmd->cmd_flags |= ICE_AQC_NVM_FLASH_ONLY; in ice_aq_read_nvm()
41 cmd->cmd_flags |= ICE_AQC_NVM_LAST_CMD; in ice_aq_read_nvm()
42 cmd->module_typeid = cpu_to_le16(module_typeid); in ice_aq_read_nvm()
43 cmd->offset_low = cpu_to_le16(offset & 0xFFFF); in ice_aq_read_nvm()
44 cmd->offset_high = (offset >> 16) & 0xFF; in ice_aq_read_nvm()
45 cmd->length = cpu_to_le16(length); in ice_aq_read_nvm()
51 * ice_read_flat_nvm - Read portion of NVM by flat offset
77 if (read_shadow_ram && ((offset + inlen) > (hw->flash.sr_words * 2u))) { in ice_read_flat_nvm()
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/linux-6.8/net/tipc/
Dsubscr.h4 * Copyright (c) 2003-2017, Ericsson AB
5 * Copyright (c) 2005-2007, 2012-2013, Wind River Systems
6 * Copyright (c) 2020-2021, Red Hat Inc
51 * struct tipc_subscription - TIPC network topology subscription object
52 * @s: host-endian copy of the user subscription
60 * @inactive: true if this subscription is inactive
72 bool inactive; member
92 /* tipc_sub_read - return field_ of struct sub_ in host endian format
97 u32 val__ = (sub__)->field_; \
98 int swap_ = !((sub__)->filter & TIPC_FILTER_MASK); \
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Dsubscr.c4 * Copyright (c) 2000-2017, Ericsson AB
5 * Copyright (c) 2005-2007, 2010-2013, Wind River Systems
6 * Copyright (c) 2020-2021, Red Hat Inc
46 struct tipc_subscr *s = &sub->evt.s; in tipc_sub_send_event()
47 struct tipc_event *evt = &sub->evt; in tipc_sub_send_event()
49 if (sub->inactive) in tipc_sub_send_event()
53 tipc_evt_write(evt, found_lower, p->sr.lower); in tipc_sub_send_event()
54 tipc_evt_write(evt, found_upper, p->sr.upper); in tipc_sub_send_event()
55 tipc_evt_write(evt, port.ref, p->sk.ref); in tipc_sub_send_event()
56 tipc_evt_write(evt, port.node, p->sk.node); in tipc_sub_send_event()
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/linux-6.8/Documentation/devicetree/bindings/clock/
Didt,versaclock5.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
16 - 5P49V5923:
17 0 -- OUT0_SEL_I2CB
18 1 -- OUT1
19 2 -- OUT2
21 - 5P49V5933:
22 0 -- OUT0_SEL_I2CB
23 1 -- OUT1
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/linux-6.8/arch/arm/include/debug/
Dsa1100.S1 /* SPDX-License-Identifier: GPL-2.0-only */
6 * Copyright (C) 1994-1999 Russell King
24 @ the comment in arch/arm/mach-sa1100/include/mach/uncompress.h.
32 @ if Ser3 is inactive, then try Ser1
33 addeq \rp, \rp, #(0x00010000 - 0x00050000)
37 @ if Ser1 is inactive, then try Ser2
38 addeq \rp, \rp, #(0x00030000 - 0x00010000)
/linux-6.8/include/linux/
Datmel-isc-media.h1 /* SPDX-License-Identifier: GPL-2.0-only */
18 * 1:12:0 with a default value of 0 (+/- 0)
25 * AWB == 1: autowhitebalance is on, the do_white_balance button is inactive,
26 * the gains/offsets are inactive, but volatile and readable.
32 * pressed, the driver will perform one-time-adjustment, (preferably with color
/linux-6.8/drivers/md/
Ddm-ima.h1 /* SPDX-License-Identifier: GPL-2.0-only */
43 * attributes' key-value pairs from the active/inactive tables.
51 * active and inactive tables for ima measurements.
/linux-6.8/fs/proc/
Dmeminfo.c1 // SPDX-License-Identifier: GPL-2.0
30 seq_put_decimal_ull_width(m, s, num << (PAGE_SHIFT - 10), 8); in show_val_kb()
48 cached = global_node_page_state(NR_FILE_PAGES) - in meminfo_proc_show()
49 total_swapcache_pages() - i.bufferram; in meminfo_proc_show()
68 show_val_kb(m, "Inactive: ", pages[LRU_INACTIVE_ANON] + in meminfo_proc_show()
71 show_val_kb(m, "Inactive(anon): ", pages[LRU_INACTIVE_ANON]); in meminfo_proc_show()
73 show_val_kb(m, "Inactive(file): ", pages[LRU_INACTIVE_FILE]); in meminfo_proc_show()
80 show_val_kb(m, "LowTotal: ", i.totalram - i.totalhigh); in meminfo_proc_show()
81 show_val_kb(m, "LowFree: ", i.freeram - i.freehigh); in meminfo_proc_show()
96 (PAGE_SHIFT - 10)); in meminfo_proc_show()
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/linux-6.8/Documentation/admin-guide/device-mapper/
Ddm-ima.rst2 dm-ima
6 (including the attestation service) interact with it - both during the
7 setup and during rest of the system run-time. They share sensitive data
9 may want to verify the current run-time state of the relevant kernel
10 subsystems before fully trusting the system with business-critical
18 impact the security profile of the block device, and in-turn, of the
24 fully trusting the system with business-critical data/workload.
28 various block devices -
30 - by device mapper itself, from within the kernel,
31 - in a tamper resistant way,
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/linux-6.8/arch/x86/events/intel/
Dbts.c1 // SPDX-License-Identifier: GPL-2.0-only
4 * Copyright (c) 2013-2014, Intel Corporation.
85 int cpu = event->cpu; in bts_buffer_setup_aux()
86 int node = (cpu == -1) ? cpu : cpu_to_node(cpu); in bts_buffer_setup_aux()
108 buf->nr_pages = nr_pages; in bts_buffer_setup_aux()
109 buf->nr_bufs = nbuf; in bts_buffer_setup_aux()
110 buf->snapshot = overwrite; in bts_buffer_setup_aux()
111 buf->data_pages = pages; in bts_buffer_setup_aux()
112 buf->real_size = size - size % BTS_RECORD_SIZE; in bts_buffer_setup_aux()
114 for (pg = 0, nbuf = 0, offset = 0, pad = 0; nbuf < buf->nr_bufs; nbuf++) { in bts_buffer_setup_aux()
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/linux-6.8/Documentation/maintainer/
Dfeature-and-driver-maintainers.rst1 .. SPDX-License-Identifier: GPL-2.0
36 may range from two working days for fast-paced subsystems (e.g. networking)
40 --------------------------
43 Maintainers must be subscribed and follow the appropriate subsystem-wide
46 `lei <https://people.kernel.org/monsieuricon/lore-lei-part-1-getting-started>`_.
52 -------
56 multiple drivers - whether to provide a review is left to the maintainer.
58 When there are multiple maintainers for a piece of code an ``Acked-by``
59 or ``Reviewed-by`` tag (or review comments) from a single maintainer is
68 ----------------------------
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