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/linux/Documentation/devicetree/bindings/arm/
H A Dpsci.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
15 processors") can be used by Linux to initiate various CPU-centric power
18 Issue A of the specification describes functions for CPU suspend, hotplug
25 r0 => 32-bit Function ID / return value
26 {r1 - r3} => Parameters
40 - description:
44 - description:
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/linux/Documentation/admin-guide/mm/
H A Dnumaperf.rst10 as CPU cache coherence, but may have different performance. For example,
15 characteristics. Some memory may share the same node as a CPU, and others
21 +------------------+ +------------------+
22 | Compute Node 0 +-----+ Compute Node 1 |
24 +--------+---------+ +--------+---------+
26 +--------+---------+ +--------+---------+
28 +------------------+ +--------+---------+
36 performance when accessing a given memory target. Each initiator-target
48 # symlinks -v /sys/devices/system/node/nodeX/access0/targets/
49 relative: /sys/devices/system/node/nodeX/access0/targets/nodeY -> ../../nodeY
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/linux/drivers/char/agp/
H A Damd64-agp.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright 2001-2003 SuSE Labs.
6 * This is a GART driver for the AMD Opteron/Athlon64 on-CPU northbridge.
50 struct agp_bridge_data *bridge = mem->bridge; in amd64_insert_memory()
55 if (type != mem->type) in amd64_insert_memory()
56 return -EINVAL; in amd64_insert_memory()
57 mask_type = bridge->driver->agp_type_to_mask_type(bridge, type); in amd64_insert_memory()
59 return -EINVAL; in amd64_insert_memory()
64 if (((unsigned long)pg_start + mem->page_count) > num_entries) in amd64_insert_memory()
65 return -EINVAL; in amd64_insert_memory()
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/linux/arch/arm/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0
159 The ARM series is a line of low-power-consumption RISC chip designs
161 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
162 manufactured, but legacy ARM-based PC hardware remains popular in
173 supported in LLD until version 14. The combined range is -/+ 256 MiB,
266 Patch phys-to-virt and virt-to-phys translation functions at
270 This can only be used with non-XIP MMU kernels where the base
316 bool "MMU-based Paged Memory Management Support"
319 Select if you want MMU-based virtualised addressing space
354 # This is sorted alphabetically by mach-* pathname. However, plat-*
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/linux/drivers/scsi/lpfc/
H A Dlpfc.h4 * Copyright (C) 2017-2024 Broadcom. All Rights Reserved. The term *
6 * Copyright (C) 2004-2016 Emulex. All rights reserved. *
9 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
65 #define LPFC_IOCB_LIST_CNT 2250 /* list of IOCBs for fast-path usage. */
101 /* Number of MSI-X vectors the driver uses */
133 * Provide for FC4 TYPE x28 - NVME. The
348 (vport->vmid_priority_tagging ? 1 : 0)
397 LPFC_LINK_UP = 5, /* Link is up - issue READ_LA */
398 LPFC_CLEAR_LA = 6, /* authentication cmplt - issue
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H A Dlpfc_attr.c4 * Copyright (C) 2017-2024 Broadcom. All Rights Reserved. The term *
6 * Copyright (C) 2004-2016 Emulex. All rights reserved. *
9 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
72 " trunk - link was \"low\" speed",
74 " existing trunk - link was \"middle\" speed",
76 " trunk - link was \"high\" speed",
77 "Attached to non-trunking port - F_Port",
78 "Attached to non-trunking port - N_Port",
80 "non-FLOGI frame received",
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/linux/tools/memory-model/Documentation/
H A Dexplanation.txt1 Explanation of the Linux-Kernel Memory Consistency Model
15 7. THE PROGRAM ORDER RELATION: po AND po-loc
18 10. THE READS-FROM RELATION: rf, rfi, and rfe
20 12. THE FROM-READS RELATION: fr, fri, and fre
22 14. PROPAGATION ORDER RELATION: cumul-fence
28 20. THE HAPPENS-BEFORE RELATION: hb
29 21. THE PROPAGATES-BEFORE RELATION: pb
30 22. RCU RELATIONS: rcu-link, rcu-gp, rcu-rscsi, rcu-order, rcu-fence, and rb
31 23. SRCU READ-SIDE CRITICAL SECTIONS
39 ------------
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/linux/Documentation/arch/sparc/oradax/
H A Ddax-hv-api.txt3 Publication date 2017-09-25 08:21
5 Extracted via "pdftotext -f 547 -l 572 -layout sun4v_20170925.pdf"
16 live-migration and other system management activities.
20 …high speed processoring of database-centric operations. The coprocessors may support one or more of
28 …e Completion Area and, unless execution order is specifically restricted through the use of serial-
45 …device node in the guest MD (Section 8.24.17, “Database Analytics Accelerators (DAX) virtual-device
51 36.1.1.1. "ORCL,sun4v-dax" Device Compatibility
54 • No-op/Sync
81 36.1.1.2. "ORCL,sun4v-dax-fc" Device Compatibility
82 … "ORCL,sun4v-dax-fc" is compatible with the "ORCL,sun4v-dax" interface, and includes additional CCB
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/linux/drivers/gpu/drm/i915/
H A Di915_perf.c2 * Copyright © 2015-2016 Intel Corporation
40 * captured by DMA from the GPU, unsynchronized with and unrelated to the CPU.
44 * without special privileges. Access to system-wide metrics requires root
58 * might sample sets of tightly-coupled counters, depending on the
70 * interleaved with event-type specific members.
74 * with the CPU, using HW specific packing formats for counter sets. Sometimes
76 * would be acceptable to expose them to unprivileged applications - to hide
88 * into perf's currently cpu centric design.
96 * side-band OA data captured via MI_REPORT_PERF_COUNT commands; we're
102 * For posterity, in case we might re-visit trying to adapt core perf to be
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