| /openbmc/linux/Documentation/networking/device_drivers/can/freescale/ |
| H A D | flexcan.rst | 1 .. SPDX-License-Identifier: GPL-2.0+
7 Authors: Marc Kleine-Budde <mkl@pengutronix.de>,
10 On/off RTR frames reception
15 - FIFO
16 - mailbox
20 configured for RX-FIFO mode.
30 With the "rx-rtr" private flag the ability to receive RTR frames can
32 messages. This trade off is beneficial in certain use cases.
34 "rx-rtr" on
43 "rx-rtr" off
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| /openbmc/linux/Documentation/devicetree/bindings/regulator/ |
| H A D | richtek,rt4831-regulator.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/regulator/richtek,rt4831-regulator.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - ChiYuan Huang <cy_huang@richtek.com>
23 efficiency worse. It's a trade-off.
26 https://www.richtek.com/assets/product_file/RT4831A/DS4831A-05.pdf
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| /openbmc/openbmc/poky/meta/recipes-multimedia/webp/ |
| H A D | libwebp_1.5.0.bb | 5 compression is adjustable so a user can choose the trade-off \
12 LICENSE = "BSD-3-Clause"
22 --disable-wic \
23 --enable-libwebpmux \
24 --enable-libwebpdemux \
25 --enable-threading \
31 ${@bb.utils.contains("TUNE_FEATURES","neon","--enable-neon","--disable-neon",d)} \
41 PACKAGECONFIG[decoder] = "--enable-libwebpdecoder,--disable-libwebpdecoder"
44 PACKAGECONFIG[gif] = "--enable-gif,--disable-gif,giflib"
45 PACKAGECONFIG[jpeg] = "--enable-jpeg,--disable-jpeg,jpeg"
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| /openbmc/linux/fs/squashfs/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
3 tristate "SquashFS 4.0 - Squashed file system support"
7 Read-Only File System). Squashfs is a highly compressed read-only
16 Squashfs is intended for general read-only filesystem use, for
88 decompression. Each one exhibits various trade-offs between
97 Traditionally Squashfs has used single-threaded decompression.
126 decompression is load-balanced across the cores.
159 file systems. It offers a good trade-off between compression
247 bool "Additional option for memory-constrained systems"
261 has to re-read fragments less often from disk, at the expense
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| /openbmc/linux/arch/x86/crypto/ |
| H A D | twofish_glue_3way.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Glue Code for 3-way parallel assembler optimized version of Twofish
24 return twofish_setkey(&tfm->base, key, keylen); in twofish_setkey_skcipher()
47 ECB_WALK_START(req, TF_BLOCK_SIZE, -1); in ecb_encrypt()
55 ECB_WALK_START(req, TF_BLOCK_SIZE, -1); in ecb_decrypt()
63 CBC_WALK_START(req, TF_BLOCK_SIZE, -1); in cbc_encrypt()
70 CBC_WALK_START(req, TF_BLOCK_SIZE, -1); in cbc_decrypt()
79 .base.cra_driver_name = "ecb-twofish-3way",
91 .base.cra_driver_name = "cbc-twofish-3way",
115 * On Atom, twofish-3way is slower than original assembler in is_blacklisted_cpu()
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| /openbmc/linux/Documentation/userspace-api/media/v4l/ |
| H A D | ext-ctrls-jpeg.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _jpeg-controls:
15 .. _jpeg-control-id:
28 spatial dimension. See :ref:`itu-t81`, clause A.1.1. for more
35 .. flat-table::
36 :header-rows: 0
37 :stub-columns: 0
39 * - ``V4L2_JPEG_CHROMA_SUBSAMPLING_444``
40 - No chroma subsampling, each pixel has Y, Cr and Cb values.
41 * - ``V4L2_JPEG_CHROMA_SUBSAMPLING_422``
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| H A D | dev-overlay.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
11 Video overlay devices have the ability to genlock (TV-)video into the
12 (VGA-)video signal of a graphics card, or to store captured images
62 :ref:`streaming parameter <streaming-par>` ioctls as needed. The
93 1. Chroma-keying displays the overlaid image only where pixels in the
162 ------------------
181 When chroma-keying has been negotiated with
187 :ref:`V4L2_PIX_FMT_BGR24 <V4L2-PIX-FMT-BGR32>` the value should
192 When chroma-keying has *not* been negotiated and
202 x-y or y-x bands, or the order of rectangles, is not defined. When
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| /openbmc/linux/Documentation/mm/damon/ |
| H A D | design.rst | 1 .. SPDX-License-Identifier: GPL-2.0
13 - Operations Set: Implements fundamental operations for DAMON that depends on
14 the given monitoring target address-space and available set of
16 - Core: Implements core logics including monitoring overhead/accurach control
17 and access-aware system operations on top of the operations set layer, and
18 - Modules: Implements kernel modules for various purposes that provides
23 ---------------------------
45 --------------------
66 VMA-based Target Address Range Construction
67 -------------------------------------------
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| /openbmc/linux/mm/kasan/ |
| H A D | sw_tags.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * This file contains core software tag-based KASAN code.
47 pr_info("KernelAddressSanitizer initialized (sw-tags, stacktrace=%s)\n", in kasan_init_sw_tags()
48 kasan_stack_collection_enabled() ? "on" : "off"); in kasan_init_sw_tags()
54 * the same tag. Since tag-based KASAN is meant to be used a probabilistic
55 * bug-detection debug feature, this doesn't have significant negative impact.
59 * and we did an intentional trade-off to use a PRNG. This non-atomic RMW
112 shadow_last = kasan_mem_to_shadow(untagged_addr + size - 1); in kasan_check_range()
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| /openbmc/linux/Documentation/admin-guide/ |
| H A D | lockup-watchdogs.rst | 14 "softlockup_panic" (see "Documentation/admin-guide/kernel-parameters.rst" for
26 (see "Documentation/admin-guide/kernel-parameters.rst" for details).
43 (compile-time initialized to 10 and configurable through sysctl of the
64 event. The right value for a particular environment is a trade-off
77 to continue to run on the housekeeping (non-tickless) cores means
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| /openbmc/linux/lib/ |
| H A D | Kconfig.ubsan | 1 # SPDX-License-Identifier: GPL-2.0-only
9 Compile-time instrumentation is used to detect various undefined
11 Documentation/dev-tools/ubsan.rst
27 trade-off.
38 def_bool $(cc-option,-fsanitize=bounds-strict)
40 The -fsanitize=bounds-strict option is only available on GCC,
43 -fsanitize=bounds.
46 def_bool $(cc-option,-fsanitize=array-bounds)
48 Under Clang, the -fsanitize=bounds option is actually composed
49 of two more specific options, -fsanitize=array-bounds and
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| /openbmc/qemu/docs/system/ |
| H A D | security.rst | 5 --------
11 ---------------------
24 safely on the physical CPU at close-to-native speed.
29 - Guest
30 - User-facing interfaces (e.g. VNC, SPICE, WebSocket)
31 - Network protocols (e.g. NBD, live migration)
32 - User-supplied files (e.g. disk images, kernels, device trees)
33 - Passthrough devices (e.g. PCI, USB)
36 real-world use cases and treated as security bugs if this is the case.
38 Non-virtualization Use Case
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| /openbmc/linux/Documentation/admin-guide/mm/ |
| H A D | zswap.rst | 10 dynamically allocated RAM-based memory pool. zswap basically trades CPU cycles
11 for potentially reduced swap I/O. This trade-off can also result in a
24 drastically reducing life-shortening writes.
69 means the compression ratio will always be 2:1 or worse (because of half-full
76 with a red-black tree per swap type. The swap offset is the search key for the
90 * max_pool_percent - The maximum percentage of memory that the compressed
107 Some of the pages in zswap are same-value filled pages (i.e. contents of the
108 page have same value or repetitive pattern). These pages include zero-filled
110 checked if it is a same-value filled page before compressing it. If true, the
111 compressed length of the page is set to zero and the pattern or same-filled
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| /openbmc/linux/kernel/sched/ |
| H A D | cpupri.c | 1 // SPDX-License-Identifier: GPL-2.0-only
7 * Copyright (C) 2007-2008 Novell
27 * p->rt_priority p->prio newpri cpupri
29 * -1 -1 (CPUPRI_INVALID)
48 cpupri = CPUPRI_INVALID; /* -1 */ in convert_prio()
52 cpupri = MAX_RT_PRIO-1 - prio; /* 1 ... 99 */ in convert_prio()
55 case MAX_RT_PRIO-1: in convert_prio()
70 struct cpupri_vec *vec = &cp->pri_to_cpu[idx]; in __cpupri_find()
73 if (!atomic_read(&(vec)->count)) in __cpupri_find()
99 if (cpumask_any_and(&p->cpus_mask, vec->mask) >= nr_cpu_ids) in __cpupri_find()
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| /openbmc/linux/Documentation/driver-api/thermal/ |
| H A D | cpu-idle-cooling.rst | 1 .. SPDX-License-Identifier: GPL-2.0
8 ----------
26 budget lower than the requested one and under-utilize the CPU, thus
27 losing performance. In other words, one OPP under-utilizes the CPU
33 ----------
58 ---------------
78 |------- -------
81 <------>
82 idle <---------------------->
85 <----------------------------->
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| /openbmc/linux/Documentation/usb/ |
| H A D | ehci.rst | 5 27-Dec-2002
8 USB 2.0-capable host controller hardware. The USB 2.0 standard is
11 - "High Speed" 480 Mbit/sec (60 MByte/sec)
12 - "Full Speed" 12 Mbit/sec (1.5 MByte/sec)
13 - "Low Speed" 1.5 Mbit/sec
31 While usb-storage devices have been available since mid-2001 (working
34 appear to be on hold until more systems come with USB 2.0 built-in.
39 other changes to the Linux-USB core APIs, including the hub driver,
43 - David Brownell
56 --------------
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| /openbmc/linux/tools/perf/Documentation/ |
| H A D | perf-top.txt | 1 perf-top(1)
5 ----
6 perf-top - System profiling tool.
9 --------
11 'perf top' [-e <EVENT> | --event=EVENT] [<options>]
14 -----------
19 -------
20 -a::
21 --all-cpus::
22 System-wide collection. (default)
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| H A D | perf-script.txt | 1 perf-script(1)
5 ----
6 perf-script - Read perf.data (created by perf record) and display trace output
9 --------
12 'perf script' [<options>] record <script> [<record-options>] <command>
13 'perf script' [<options>] report <script> [script-args]
14 'perf script' [<options>] <script> <required-script-args> [<record-options>] <command>
15 'perf script' [<options>] <top-script> [script-args]
18 -----------
26 You can also run a set of pre-canned scripts that aggregate and
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| /openbmc/linux/Documentation/virt/kvm/ |
| H A D | halt-polling.rst | 1 .. SPDX-License-Identifier: GPL-2.0
16 the order of a few micro-seconds, although performance benefits are workload
27 The powerpc kvm-hv specific case is implemented in:
39 kvm_vcpu->halt_poll_ns
41 or in the case of powerpc kvm-hv, in the vcore struct:
43 kvmppc_vcore->halt_poll_ns
86 powerpc kvm-hv case.
88 +-----------------------+---------------------------+-------------------------+
90 +-----------------------+---------------------------+-------------------------+
96 +-----------------------+---------------------------+-------------------------+
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| /openbmc/linux/Documentation/process/ |
| H A D | submitting-patches.rst | 13 works, see Documentation/process/development-process.rst. Also, read
14 Documentation/process/submit-checklist.rst
17 Documentation/devicetree/bindings/submitting-patches.rst.
20 If you're unfamiliar with ``git``, you would be well-advised to learn how to
26 :ref:`Documentation/process/maintainer-handbooks.rst <maintainer_handbooks_main>`.
29 ----------------------------
46 ---------------------
48 Describe your problem. Whether your patch is a one-line bug fix or
54 Describe user-visible impact. Straight up crashes and lockups are
59 vendor/product-specific trees that cherry-pick only specific patches
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| /openbmc/linux/Documentation/core-api/ |
| H A 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
81 off of the queue, one after the other. If no work is queued, the
83 called worker-pools.
85 The cmwq design differentiates between the user-facing workqueues that
87 which manages worker-pools and processes the queued work items.
89 There are two worker-pools, one for normal work items and the other
91 worker-pools to serve work items queued on unbound workqueues - the
102 When a work item is queued to a workqueue, the target worker-pool is
104 and appended on the shared worklist of the worker-pool. For example,
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| /openbmc/linux/arch/hexagon/include/asm/ |
| H A D | pgtable.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
5 * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
15 #include <asm-generic/pgtable-nopmd.h>
22 * which autonomously walks 2-level page tables. At a lower level, we
23 * also describe the RISCish software-loaded TLB entry structure of
31 * define the "well known" architecture-specific bits.
77 #define PGDIR_MASK (~(PGDIR_SIZE-1))
140 * For now, assume that higher-level code will do TLB/MMU invalidations
141 * and don't insert that overhead into this low-level function.
183 * pmd_none - check if pmd_entry is mapped
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| /openbmc/openbmc/poky/meta/files/common-licenses/ |
| H A D | EUPL-1.1 | 16 - The Licence: this Licence.
17 - The Original Work or the Software: the software distributed and/or communicated
20 - Derivative Works: the works or software that could be created by the Licensee,
25 - The Work: the Original Work and/or its Derivative Works.
26 - The Source Code: the human-readable form of the Work which is the most
28 - The Executable Code: any code which has generally been compiled and which is
30 - The Licensor: the natural or legal person that distributes and/or communicates the
32 - Contributor(s): any natural or legal person who modifies the Work under the
34 - The Licensee or “You”: any natural or legal person who makes any usage of the
36 - Distribution and/or Communication: any act of selling, giving, lending, renting,
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|
| H A D | EUPL-1.0 | 26 − The Source Code: the human-readable form of the Work which is the most
36 distributing, communicating, transmitting, or otherwise making available, on-line or
37 off-line, copies of the Work at the disposal of any other natural or legal person.
39 The Licensor hereby grants You a world-wide, royalty-free, non-exclusive, sub-licensable
48 − sub-license rights in the Work or copies thereof.
54 The Licensor grants to the Licensee royalty-free, non exclusive usage rights to any patents
87 Licensee will provide a machine-readable copy of the Source Code or indicate a repository
90 Legal Protection: This Licence does not grant permission to use the trade names, trademarks,
109 fitness for a particular purpose, absence of defects or errors, accuracy, non-infringement of
|
| /openbmc/linux/net/dccp/ |
| H A D | ackvec.c | 1 // SPDX-License-Identifier: GPL-2.0-only
22 av->av_buf_head = av->av_buf_tail = DCCPAV_MAX_ACKVEC_LEN - 1; in dccp_ackvec_alloc()
23 INIT_LIST_HEAD(&av->av_records); in dccp_ackvec_alloc()
32 list_for_each_entry_safe(cur, next, &av->av_records, avr_node) in dccp_ackvec_purge_records()
34 INIT_LIST_HEAD(&av->av_records); in dccp_ackvec_purge_records()
46 * dccp_ackvec_update_records - Record information about sent Ack Vectors
57 return -ENOBUFS; in dccp_ackvec_update_records()
59 avr->avr_ack_seqno = seqno; in dccp_ackvec_update_records()
60 avr->avr_ack_ptr = av->av_buf_head; in dccp_ackvec_update_records()
61 avr->avr_ack_ackno = av->av_buf_ackno; in dccp_ackvec_update_records()
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