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/linux-6.12.1/drivers/gpu/drm/i915/display/
Dintel_pmdemand.c1 // SPDX-License-Identifier: MIT
23 pmdemand_state = kmemdup(obj->state, sizeof(*pmdemand_state), GFP_KERNEL); in intel_pmdemand_duplicate_state()
27 return &pmdemand_state->base; in intel_pmdemand_duplicate_state()
44 struct drm_i915_private *i915 = to_i915(state->base.dev); in intel_atomic_get_pmdemand_state()
47 &i915->display.pmdemand.obj); in intel_atomic_get_pmdemand_state()
58 struct drm_i915_private *i915 = to_i915(state->base.dev); in intel_atomic_get_old_pmdemand_state()
61 &i915->display.pmdemand.obj); in intel_atomic_get_old_pmdemand_state()
72 struct drm_i915_private *i915 = to_i915(state->base.dev); in intel_atomic_get_new_pmdemand_state()
75 &i915->display.pmdemand.obj); in intel_atomic_get_new_pmdemand_state()
89 return -ENOMEM; in intel_pmdemand_init()
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/linux-6.12.1/Documentation/devicetree/bindings/media/i2c/
Dst,st-mipid02.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/media/i2c/st,st-mipid02.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: STMicroelectronics MIPID02 CSI-2 to PARALLEL bridge
10 - Benjamin Mugnier <benjamin.mugnier@foss.st.com>
11 - Sylvain Petinot <sylvain.petinot@foss.st.com>
14 MIPID02 has two CSI-2 input ports, only one of those ports can be
15 active at a time. Active port input stream will be de-serialized
17 CSI-2 first input port is a dual lane 800Mbps per lane whereas CSI-2
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/linux-6.12.1/include/linux/
Dplist.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Descending-priority-sorted double-linked list
5 * (C) 2002-2003 Intel Corp
6 * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>.
8 * 2001-2005 (c) MontaVista Software, Inc.
11 * (C) 2005 Thomas Gleixner <tglx@linutronix.de>
14 * Oleg Nesterov <oleg@tv-sign.ru>
18 * This is a priority-sorted list of nodes; each node has a
27 * - The tier 1 list is the prio_list, different priority nodes.
29 * - The tier 2 list is the node_list, serialized nodes.
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Dinterrupt.h1 /* SPDX-License-Identifier: GPL-2.0 */
44 * IRQF_SHARED - allow sharing the irq among several devices
45 * IRQF_PROBE_SHARED - set by callers when they expect sharing mismatches to occur
46 * IRQF_TIMER - Flag to mark this interrupt as timer interrupt
47 * IRQF_PERCPU - Interrupt is per cpu
48 * IRQF_NOBALANCING - Flag to exclude this interrupt from irq balancing
49 * IRQF_IRQPOLL - Interrupt is used for polling (only the interrupt that is
52 * IRQF_ONESHOT - Interrupt is not reenabled after the hardirq handler finished.
55 * IRQF_NO_SUSPEND - Do not disable this IRQ during suspend. Does not guarantee
57 * state. See Documentation/power/suspend-and-interrupts.rst
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Dsched.h1 /* SPDX-License-Identifier: GPL-2.0 */
41 #include <linux/posix-timers_types.h>
91 * We have two separate sets of flags: task->__state
92 * is about runnability, while task->exit_state are
98 /* Used in tsk->__state: */
104 /* Used in tsk->exit_state: */
108 /* Used in tsk->__state again: */
121 #define TASK_ANY (TASK_STATE_MAX-1)
144 #define task_is_running(task) (READ_ONCE((task)->__state) == TASK_RUNNING)
146 #define task_is_traced(task) ((READ_ONCE(task->jobctl) & JOBCTL_TRACED) != 0)
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Dperf_event.h4 * Copyright (C) 2008-2009, Thomas Gleixner <tglx@linutronix.de>
5 * Copyright (C) 2008-2011, Red Hat, Inc., Ingo Molnar
6 * Copyright (C) 2008-2011, Red Hat, Inc., Peter Zijlstra
12 * For licencing details see kernel-base/COPYING
21 * Kernel-internal data types and definitions:
39 #include <linux/rhashtable-types.h>
100 return frag->pad < sizeof(u64); in perf_raw_frag_last()
108 * -1ULL means invalid/unknown.
118 * The hw_idx index is between -1 (unknown) and max depth,
138 int idx; /* index in shared_regs->regs[] */
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/linux-6.12.1/arch/s390/appldata/
Dappldata_mem.c1 // SPDX-License-Identifier: GPL-2.0
3 * Data gathering module for Linux-VM Monitor Stream, Stage 1.
8 * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com>
23 #define P2K(x) ((x) << (PAGE_SHIFT - 10)) /* Converts #Pages to KB */
58 // New in 2.6 -->
62 // <-- New in 2.6
76 * serialized through the appldata_ops_mutex and can use static in appldata_get_mem_data()
83 mem_data->sync_count_1++; in appldata_get_mem_data()
86 mem_data->pgpgin = ev[PGPGIN] >> 1; in appldata_get_mem_data()
87 mem_data->pgpgout = ev[PGPGOUT] >> 1; in appldata_get_mem_data()
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/linux-6.12.1/Documentation/core-api/
Dcpu_hotplug.rst6 :Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
11 Thomas Gleixner <tglx@linutronix.de>
26 A more novel use of CPU-hotplug support is its use today in suspend resume
27 support for SMP. Dual-core and HT support makes even a laptop run SMP kernels
75 from the map depending on the event is hot-add/hot-remove. There are currently
80 be read-only for most use. When setting up per-cpu resources almost always use
94 $ ls -lh /sys/devices/system/cpu
96 drwxr-xr-x 9 root root 0 Dec 21 16:33 cpu0
97 drwxr-xr-x 9 root root 0 Dec 21 16:33 cpu1
98 drwxr-xr-x 9 root root 0 Dec 21 16:33 cpu2
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/linux-6.12.1/lib/reed_solomon/
Dreed_solomon.c1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (C) 2004 Thomas Gleixner (tglx@linutronix.de)
58 * codec_init - Initialize a Reed-Solomon codec
59 * @symsize: symbol size, bits (1-8)
80 INIT_LIST_HEAD(&rs->list); in codec_init()
82 rs->mm = symsize; in codec_init()
83 rs->nn = (1 << symsize) - 1; in codec_init()
84 rs->fcr = fcr; in codec_init()
85 rs->prim = prim; in codec_init()
86 rs->nroots = nroots; in codec_init()
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/linux-6.12.1/kernel/
Dasync.c1 // SPDX-License-Identifier: GPL-2.0-only
6 * Author: Arjan van de Ven <arjan@linux.intel.com>
16 decoupled and not strictly serialized.
21 have their externally visible parts happen sequentially and in-order.
22 (not unlike how out-of-order CPUs retire their instructions in order)
98 if (!list_empty(&domain->pending)) in lowest_in_progress()
99 first = list_first_entry(&domain->pending, in lowest_in_progress()
108 ret = first->cookie; in lowest_in_progress()
125 pr_debug("calling %lli_%pS @ %i\n", (long long)entry->cookie, in async_run_entry_fn()
126 entry->func, task_pid_nr(current)); in async_run_entry_fn()
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/linux-6.12.1/Documentation/scheduler/
Dcompletion.rst2 Completions - "wait for completion" barrier APIs
6 -------------
10 race-free solution to this problem. Semantically they are somewhat like a
11 pthread_barrier() and have similar use-cases.
14 misuse of locks/semaphores and busy-loops. Any time you think of using
34 ------
38 - the initialization of the 'struct completion' synchronization object
39 - the waiting part through a call to one of the variants of wait_for_completion(),
40 - the signaling side through a call to complete() or complete_all().
57 This provides the ->wait waitqueue to place tasks on for waiting (if any), and
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/linux-6.12.1/Documentation/virt/kvm/x86/
Dtimekeeping.rst1 .. SPDX-License-Identifier: GPL-2.0
4 Timekeeping Virtualization for X86-Based Architectures
32 information relevant to KVM and hardware-based virtualization.
41 2.1. i8254 - PIT
42 ----------------
46 channels which can be programmed to deliver periodic or one-shot interrupts.
53 The PIT uses I/O ports 0x40 - 0x43. Access to the 16-bit counters is done
59 -------------- ----------------
61 | 1.1932 MHz|---------->| CLOCK OUT | ---------> IRQ 0
63 -------------- | +->| GATE TIMER 0 |
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/linux-6.12.1/drivers/s390/char/
Dvmur.c1 // SPDX-License-Identifier: GPL-2.0
8 * Michael Holzheu <holzheu@de.ibm.com>
9 * Frank Munzert <munzert@de.ibm.com>
38 * is used to read spool data page-wise.
91 * (cdev) using the urd->cdev pointer. Each ccw device has a reference to the
92 * ur device using dev_get_drvdata(&cdev->dev) pointer.
95 * - ur_probe gets a urd reference, ur_remove drops the reference
96 * dev_get_drvdata(&cdev->dev)
97 * - ur_open gets a urd reference, ur_release drops the reference
98 * (urf->urd)
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/linux-6.12.1/net/netfilter/ipset/
Dip_set_core.c1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
3 * Patrick Schaaf <bof@bof.de>
4 * Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@netfilter.org>
57 rcu_dereference_protected((inst)->ip_set_list, \
60 (inst)->is_deleted)
64 rcu_dereference_raw((inst)->ip_set_list)[id]
70 * serialized by ip_set_type_mutex.
94 if (STRNCMP(type->name, name) && in find_set_type()
95 (type->family == family || in find_set_type()
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/linux-6.12.1/arch/x86/kernel/cpu/microcode/
Dcore.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (C) 2000-2006 Tigran Aivazian <aivazian.tigran@gmail.com>
7 * 2013-2016 Borislav Petkov <bp@alien8.de>
13 * (C) 2015 Borislav Petkov <bp@alien8.de>
53 * All non cpu-hotplug-callback call sites use:
55 * - cpus_read_lock/unlock() to synchronize with
56 * the cpu-hotplug-callback call sites.
70 0, /* T-101 terminator */
79 * - true: if update should stop
80 * - false: otherwise
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/linux-6.12.1/Documentation/driver-api/soundwire/
Dstream.rst24 -------------------------
26 -------------------------
31 +---------------+ Clock Signal +---------------+
32 | Master +----------------------------------+ Slave |
36 | L + R +----------------------------------+ L + R |
38 +---------------+ +-----------------------> +---------------+
45 +---------------+ Clock Signal +---------------+
46 | Master +----------------------------------+ Slave |
50 | L + R +----------------------------------+ L + R |
52 +---------------+ <-----------------------+ +---------------+
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/linux-6.12.1/include/uapi/linux/
Drkisp1-config.h1 /* SPDX-License-Identifier: ((GPL-2.0+ WITH Linux-syscall-note) OR MIT) */
16 /* Sensor De-gamma */
44 /* Denoise Pre-Filter */
46 /* Denoise Pre-Filter Strength */
129 /* 0-2 for sets 1-3 */
181 * enum rkisp1_cif_isp_version - ISP variants
221 * enum rkisp1_cif_isp_exp_ctrl_autostop - stop modes
231 * enum rkisp1_cif_isp_exp_meas_mode - Exposure measure mode
240 /*---------- PART1: Input Parameters ------------*/
243 * struct rkisp1_cif_isp_window - measurement window.
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/linux-6.12.1/drivers/nvdimm/
Dpmem.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (c) 2014-2015, Intel Corporation.
6 * Copyright (c) 2015, Christoph Hellwig <hch@lst.de>.
22 #include <linux/blk-mq.h>
41 return pmem->bb.dev; in to_dev()
46 return to_nd_region(to_dev(pmem)->parent); in to_region()
51 return pmem->phys_addr + offset; in pmem_to_phys()
56 return (offset - pmem->data_offset) >> SECTOR_SHIFT; in to_sect()
61 return (sector << SECTOR_SHIFT) + pmem->data_offset; in to_offset()
71 if (is_vmalloc_addr(pmem->virt_addr)) in pmem_mkpage_present()
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/linux-6.12.1/drivers/i2c/busses/
Di2c-mlxbf.c1 // SPDX-License-Identifier: GPL-2.0
57 * memory-mapped region whose addresses are specified in either the DT or
67 /* Reference clock for Bluefield - 156 MHz. */
149 * SMBUS GW0 -> bits[26:25]
150 * SMBUS GW1 -> bits[28:27]
151 * SMBUS GW2 -> bits[30:29]
245 #define MLXBF_I2C_MASTER_DATA_W_LENGTH (MLXBF_I2C_MASTER_DATA_DESC_SIZE - 1)
321 .end = (addr) + (size) - 1, \
343 MLXBF_I2C_CHIP_TYPE_1, /* Mellanox BlueField-1 chip. */
344 MLXBF_I2C_CHIP_TYPE_2, /* Mellanox BlueField-2 chip. */
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/linux-6.12.1/arch/x86/kernel/
Dsmpboot.c1 // SPDX-License-Identifier: GPL-2.0-or-later
13 * Pentium Pro and Pentium-II/Xeon MP machines.
19 * Alan Cox : By repeated request 8) - Total BogoMIPS report.
32 * Martin J. Bligh : Added support for multi-quad systems
85 #include <asm/intel-family.h>
87 #include <asm/spec-ctrl.h>
91 #include <asm/spec-ctrl.h>
163 if (!--smpboot_warm_reset_vector_count) { in smpboot_restore_warm_reset_vector()
241 * 32-bit specific. 64-bit reaches this code with the correct page in start_secondary()
254 * point below so it is not part of the full per CPU serialized in start_secondary()
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/linux-6.12.1/fs/
Ddcache.c1 // SPDX-License-Identifier: GPL-2.0-only
6 * (C) 1997 Thomas Schoebel-Theuer,
13 * The dcache is a master of the icache - whenever a dcache entry
38 #include <asm/runtime-const.h>
42 * dcache->d_inode->i_lock protects:
43 * - i_dentry, d_u.d_alias, d_inode of aliases
45 * - the dcache hash table
47 * - the s_roots list (see __d_drop)
48 * dentry->d_sb->s_dentry_lru_lock protects:
49 * - the dcache lru lists and counters
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/linux-6.12.1/drivers/s390/cio/
Dchsc.c1 // SPDX-License-Identifier: GPL-2.0
3 * S/390 common I/O routines -- channel subsystem call
6 * Author(s): Ingo Adlung (adlung@de.ibm.com)
7 * Cornelia Huck (cornelia.huck@de.ibm.com)
8 * Arnd Bergmann (arndb@de.ibm.com)
57 * chsc_error_from_response() - convert a chsc response to an error
74 return -EINVAL; in chsc_error_from_response()
77 return -EOPNOTSUPP; in chsc_error_from_response()
80 return -EBUSY; in chsc_error_from_response()
83 return -ENOMEM; in chsc_error_from_response()
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/linux-6.12.1/kernel/locking/
Dmutex.c1 // SPDX-License-Identifier: GPL-2.0-only
11 * Many thanks to Arjan van de Ven, Thomas Gleixner, Steven Rostedt and
14 * - Adaptive spinning for mutexes by Peter Zijlstra. (Ported to mainline
15 * from the -rt tree, where it was originally implemented for rtmutexes
19 * Also see Documentation/locking/mutex-design.rst.
48 atomic_long_set(&lock->owner, 0); in __mutex_init()
49 raw_spin_lock_init(&lock->wait_lock); in __mutex_init()
50 INIT_LIST_HEAD(&lock->wait_list); in __mutex_init()
52 osq_lock_init(&lock->osq); in __mutex_init()
64 * Bit0 indicates a non-empty waiter list; unlock must issue a wakeup.
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Drtmutex.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * RT-Mutexes: simple blocking mutual exclusion locks with PI support
7 * Copyright (C) 2004-2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
8 * Copyright (C) 2005-2006 Timesys Corp., Thomas Gleixner <tglx@timesys.com>
17 * See Documentation/locking/rt-mutex-design.rst for details.
66 * lock->owner state tracking:
68 * lock->owner holds the task_struct pointer of the owner. Bit 0
79 * possible when bit 0 of lock->owner is 0.
82 * with ->wait_lock is held. To prevent any fast path cmpxchg to the lock,
107 * lock->wait_lock is held but explicit acquire semantics are needed in rt_mutex_set_owner()
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/linux-6.12.1/drivers/pci/controller/
Dvmd.c1 // SPDX-License-Identifier: GPL-2.0
14 #include <linux/pci-acpi.h>
15 #include <linux/pci-ecam.h>
53 * vendor-specific capability space
58 * Device may use MSI-X vector 0 for software triggering and will not
64 * Device can bypass remapping MSI-X transactions into its MSI-X table,
94 * struct vmd_irq - private data to map driver IRQ to the VMD shared vector
100 * Every MSI/MSI-X IRQ requested for a device in a VMD domain will be mapped to
111 * struct vmd_irq_list - list of driver requested IRQs mapping to a VMD vector
146 return container_of(bus->sysdata, struct vmd_dev, sysdata); in vmd_from_bus()
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