| /linux/tools/power/cpupower/man/ |
| H A D | cpupower-set.1 | 1 .TH CPUPOWER\-SET "1" "22/02/2011" "" "cpupower Manual"
3 cpupower\-set \- Set processor power related kernel or hardware configurations
6 .B cpupower set [ \-b VAL | \-e POLICY | \-m MODE | \-t BOOL ]
11 registers affecting processor power saving policies.
15 described in the cpupower(1) manpage in the \-\-cpu option section. Whether an
24 \-\-perf-bias, \-b
27 its policy for the relative importance of performance versus energy savings to
30 The range of valid numbers is 0-15, where 0 is maximum
31 performance and 15 is maximum energy efficiency.
33 The processor uses this information in model-specific ways
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| /linux/Documentation/ABI/testing/ |
| H A D | sysfs-class-scsi_host | 7 Storage Control Unit embeds up to two 4-port controllers in
23 stack for a performance advantage when possible. A value of
28 controller wide, affecting all configured logical drives on the
34 Contact: linux-ide@vger.kernel.org
43 performance due to increased latency when coming out of lower
47 Tell the controller to have performance be a priority over power
60 a) It does not use host-initiated slumber mode, but it does
61 allow device-initiated slumber
68 Contact: linux-ide@vger.kernel.org
79 protocol that is being used by the driver (for eg. LED, SAF-TE,
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| /linux/Documentation/filesystems/nfs/ |
| H A D | knfsd-stats.rst | 5 :Authors: Greg Banks <gnb@sgi.com> - 26 Mar 2009
13 program from the nfs-utils distribution provides a helpful command-line
48 packets-arrived
58 However this is a more accurate and less workload-dependent measure
62 sockets-enqueued
68 network-facing work to be done but it couldn't be done immediately,
70 rate of change for this counter is zero; significantly non-zero
71 values may indicate a performance limitation.
74 pool for the NFS workload (the workload is thread-limited), in which
76 performance of the NFS workload.
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| /linux/lib/ |
| H A D | Kconfig.kasan | 1 # SPDX-License-Identifier: GPL-2.0-only
32 compile-time constants for better performance.
35 def_bool $(cc-option, -fsanitize=kernel-address)
38 def_bool $(cc-option, -fsanitize=kernel-hwaddress)
55 Enables KASAN (Kernel Address Sanitizer) - a dynamic memory safety
56 error detector designed to find out-of-bounds and use-after-free bugs.
58 See Documentation/dev-tools/kasan.rst for details.
65 …def_bool (CC_IS_CLANG && $(cc-option,-fsanitize=kernel-address -mllvm -asan-kernel-mem-intrinsic-p…
66 (CC_IS_GCC && $(cc-option,-fsanitize=kernel-address --param asan-kernel-mem-intrinsic-prefix=1))
81 2. Software Tag-Based KASAN (arm64 only, based on software memory
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| H A D | Kconfig.debug | 1 # SPDX-License-Identifier: GPL-2.0-only
19 parameter printk.time=1. See Documentation/admin-guide/kernel-parameters.rst
50 int "Default console loglevel (1-15)"
60 Note: This does not affect the log level of un-prefixed printk()
65 int "quiet console loglevel (1-15)"
76 int "Default message log level (1-7)"
82 This was hard-coded to KERN_WARNING since at least 2.6.10 but folks
118 enabled/disabled based on various levels of scope - per source file,
158 nullarbor:~ # echo -n 'file svcsock.c line 1603 +p' >
162 nullarbor:~ # echo -n 'file svcsock.c +p' >
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| /linux/Documentation/devicetree/bindings/memory-controllers/ |
| H A D | nvidia,tegra20-emc.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/memory-controllers/nvidia,tegra20-emc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Dmitry Osipenko <digetx@gmail.com>
11 - Jon Hunter <jonathanh@nvidia.com>
12 - Thierry Reding <thierry.reding@gmail.com>
15 The External Memory Controller (EMC) interfaces with the off-chip SDRAM to
17 various performance-affecting settings beyond the obvious SDRAM configuration
23 const: nvidia,tegra20-emc
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| H A D | nvidia,tegra30-emc.yaml | 1 # SPDX-License-Identifier: (GPL-2.0)
3 ---
4 $id: http://devicetree.org/schemas/memory-controllers/nvidia,tegra30-emc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Dmitry Osipenko <digetx@gmail.com>
11 - Jon Hunter <jonathanh@nvidia.com>
12 - Thierry Reding <thierry.reding@gmail.com>
15 The EMC interfaces with the off-chip SDRAM to service the request stream
16 sent from Memory Controller. The EMC also has various performance-affecting
23 const: nvidia,tegra30-emc
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| /linux/LICENSES/dual/ |
| H A D | CC-BY-4.0 | 1 Valid-License-Identifier: CC-BY-4.0
2 SPDX-URL: https://spdx.org/licenses/CC-BY-4.0
3 Usage-Guide:
6 with a GPL2 compatible license using "OR", as CC-BY-4.0 texts processed by
12 SPDX-License-Identifier: CC-BY-4.0
13 License-Text:
21 Creative Commons public licenses does not create a lawyer-client or
23 information available on an "as-is" basis. Creative Commons gives no
47 material not subject to the license. This includes other CC-
55 the licensor's permission is not necessary for any reason--for
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| /linux/arch/x86/kernel/cpu/resctrl/ |
| H A D | pseudo_lock.c | 1 // SPDX-License-Identifier: GPL-2.0
5 * Pseudo-locking support built on top of Cache Allocation Technology (CAT)
38 * resctrl_arch_get_prefetch_disable_bits - prefetch disable bits of supported
43 * pseudo-locking. This includes testing to ensure pseudo-locked regions
45 * as well as that these pseudo-locked regions can maintain their low cache
48 * After a platform has been validated to support pseudo-locking its
98 * resctrl_arch_pseudo_lock_fn - Load kernel memory into cache
99 * @_plr: the pseudo-lock region descriptor
101 * This is the core pseudo-locking flow.
106 * with class of service set to the bitmask of the pseudo-locked region.
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| /linux/Documentation/mm/ |
| H A D | multigen_lru.rst | 1 .. SPDX-License-Identifier: GPL-2.0
4 Multi-Gen LRU
6 The multi-gen LRU is an alternative LRU implementation that optimizes
7 page reclaim and improves performance under memory pressure. Page
14 ----------
20 * Simple self-correcting heuristics
23 implementations. In the multi-gen LRU, each generation represents a
25 (time-based) common frame of reference and therefore help make better
41 choices; thus self-correction is necessary.
43 The benefits of simple self-correcting heuristics are self-evident.
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| /linux/Documentation/admin-guide/ |
| H A D | bcache.rst | 11 This is the git repository of bcache-tools:
12 https://git.kernel.org/pub/scm/linux/kernel/git/colyli/bcache-tools.git/
17 It's designed around the performance characteristics of SSDs - it only allocates
25 great lengths to protect your data - it reliably handles unclean shutdown. (It
29 Writeback caching can use most of the cache for buffering writes - writing
36 average is above the cutoff it will skip all IO from that task - instead of
47 You'll need bcache util from the bcache-tools repository. Both the cache device
50 bcache make -B /dev/sdb
51 bcache make -C /dev/sdc
53 `bcache make` has the ability to format multiple devices at the same time - if
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| /linux/crypto/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
156 cbc(aes), and the support for the crypto self-tests.
178 bool "Enable cryptographic self-tests"
181 Enable the cryptographic self-tests.
183 The cryptographic self-tests run at boot time, or at algorithm
188 - Development and pre-release testing. In this case, also enable
192 - Production kernels, to help prevent buggy drivers from being used
193 and/or meet FIPS 140-3 pre-operational testing requirements. In
197 bool "Enable the full set of cryptographic self-tests"
200 Enable the full set of cryptographic self-tests for each algorithm.
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| /linux/Documentation/admin-guide/sysctl/ |
| H A D | vm.rst | 13 ------------------------------------------------------------------------------
27 - admin_reserve_kbytes
28 - compact_memory
29 - compaction_proactiveness
30 - compact_unevictable_allowed
31 - defrag_mode
32 - dirty_background_bytes
33 - dirty_background_ratio
34 - dirty_bytes
35 - dirty_expire_centisecs
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| /linux/Documentation/virt/hyperv/ |
| H A D | vpci.rst | 1 .. SPDX-License-Identifier: GPL-2.0
3 PCI pass-thru devices
5 In a Hyper-V guest VM, PCI pass-thru devices (also called
16 Hyper-V terminology for vPCI devices is "Discrete Device
17 Assignment" (DDA). Public documentation for Hyper-V DDA is
20 …tps://learn.microsoft.com/en-us/windows-server/virtualization/hyper-v/plan/plan-for-deploying-devi…
23 and for GPUs. A similar mechanism for NICs is called SR-IOV
25 driver to interact directly with the hardware. See Hyper-V
26 public documentation here: `SR-IOV`_
28 .. _SR-IOV: https://learn.microsoft.com/en-us/windows-hardware/drivers/network/overview-of-single-r…
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| /linux/tools/perf/Documentation/ |
| H A D | perf-report.txt | 1 perf-report(1)
5 ----
6 perf-report - Read perf.data (created by perf record) and display the profile
9 --------
11 'perf report' [-i <file> | --input=file]
14 -----------
15 This command displays the performance counter profile information recorded
19 -------
20 -i::
21 --input=::
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| /linux/drivers/gpu/drm/imagination/ |
| H A D | pvr_rogue_fwif.h | 1 /* SPDX-License-Identifier: GPL-2.0-only OR MIT */
42 /* String used in pvrdebug -h output */
140 /* Firmware per-DM HWR states */
155 /* DM was identified as over-running and causing HWR */
157 /* DM was innocently affected by another DM over-running which caused HWR */
270 /* Identify whether MC config is P-P or P-S */
274 /* per-os firmware shared data */
297 /* Firmware trace time-stamp field breakup */
303 /* Extra debug-info (16 bits) */
307 /* Debug-info sub-fields */
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| /linux/arch/arm/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
162 The ARM series is a line of low-power-consumption RISC chip designs
164 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
165 manufactured, but legacy ARM-based PC hardware remains popular in
173 relocations. The combined range is -/+ 256 MiB, which is usually
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/arch/x86/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
4 bool "64-bit kernel" if "$(ARCH)" = "x86"
7 Say yes to build a 64-bit kernel - formerly known as x86_64
8 Say no to build a 32-bit kernel - formerly known as i386
13 # Options that are inherently 32-bit kernel only:
26 # Options that are inherently 64-bit kernel only:
56 # ported to 32-bit as well. )
158 # Word-size accesses may read uninitialized data past the trailing \0
342 default "elf32-i386" if X86_32
343 default "elf64-x86-64" if X86_64
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| /linux/scripts/ |
| H A D | spelling.txt | 87 afecting||affecting
1096 none existent||non-existent
1193 peformance||performance
1198 perfomance||performance
1771 vicefersa||vice-versa
|
| /linux/drivers/net/ethernet/sfc/ |
| H A D | efx_common.c | 1 // SPDX-License-Identifier: GPL-2.0-only
104 * queued onto this work queue. This is not a per-nic work queue, because
114 return -ENOMEM; in efx_create_reset_workqueue()
122 queue_work(reset_workqueue, &efx->reset_work); in efx_queue_reset_work()
127 cancel_work_sync(&efx->reset_work); in efx_flush_reset_workqueue()
138 /* We assume that efx->type->reconfigure_mac will always try to sync RX
139 * filters and therefore needs to read-lock the filter table against freeing
143 if (efx->type->reconfigure_mac) { in efx_mac_reconfigure()
144 down_read(&efx->filter_sem); in efx_mac_reconfigure()
145 efx->type->reconfigure_mac(efx, mtu_only); in efx_mac_reconfigure()
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| /linux/drivers/net/ethernet/sfc/siena/ |
| H A D | efx_common.c | 1 // SPDX-License-Identifier: GPL-2.0-only
37 * On Falcon-based NICs, this will:
38 * - Check the on-board hardware monitor;
39 * - Poll the link state and reconfigure the hardware as necessary.
40 * On Siena-based NICs for power systems with EEH support, this will give EEH a
108 * queued onto this work queue. This is not a per-nic work queue, because
118 return -ENOMEM; in efx_siena_create_reset_workqueue()
126 queue_work(reset_workqueue, &efx->reset_work); in efx_siena_queue_reset_work()
131 cancel_work_sync(&efx->reset_work); in efx_siena_flush_reset_workqueue()
142 /* We assume that efx->type->reconfigure_mac will always try to sync RX
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| /linux/arch/arm64/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
287 ARM 64-bit (AArch64) Linux support.
295 # required due to use of the -Zfixed-x18 flag.
298 # -Zsanitizer=shadow-call-stack flag.
308 depends on $(cc-option,-fpatchable-function-entry=2)
334 # VA_BITS - PTDESC_TABLE_SHIFT
412 def_bool !$(as-instr,1:\n.inst 0\n.rept . - 1b\n\nnop\n.endr\n)
417 # https://github.com/llvm/llvm-project/commit/2a96f47c5ffca84cd774ad402cacd137f4bf45e2
467 at stage-2.
492 …bool "Cortex-A53: 826319: System might deadlock if a write cannot complete until read data is acce…
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| /linux/Documentation/networking/ |
| H A D | tcp_ao.rst | 1 .. SPDX-License-Identifier: GPL-2.0
7 TCP Authentication Option (TCP-AO) provides a TCP extension aimed at verifying
11 The intent of TCP-AO is to deprecate TCP-MD5 providing better security,
17 .. table:: Short and Limited Comparison of TCP-AO and TCP-MD5
19 +----------------------+------------------------+-----------------------+
20 | | TCP-MD5 | TCP-AO |
22 |Supported hashing |MD5 |Must support HMAC-SHA1 |
23 |algorithms |(cryptographically weak)|(chosen-prefix attacks)|
24 | | |and CMAC-AES-128 (only |
25 | | |side-channel attacks). |
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| /linux/include/linux/ |
| H A D | pm.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * pm.h - Power management interface
64 * struct dev_pm_ops - device PM callbacks.
71 * registration of a child already in progress), it may return -EAGAIN, so
81 * runtime-suspended and it may be left in that state during the entire
86 * The PM core executes subsystem-level @prepare() for all devices before
104 * The PM core executes subsystem-level @complete() after it has executed
119 * type), but generally the device must be quiescent after subsystem-level
121 * Subsystem-level @suspend() is executed for all devices after invoking
122 * subsystem-level @prepare() for all of them.
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| /linux/include/linux/spi/ |
| H A D | spi.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later
38 * INTERFACES between SPI controller-side drivers and SPI target protocol handlers,
44 * struct spi_statistics - statistics for spi transfers
45 * @syncp: seqcount to protect members in this struct for per-cpu update
46 * on 32-bit systems
48 * @messages: number of spi-message
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