Home
last modified time | relevance | path

Searched +full:multi +full:- +full:subsystems (Results 1 – 25 of 54) sorted by relevance

123

/linux-6.12.1/Documentation/devicetree/bindings/spi/
Dsprd,spi-adi.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/spi/sprd,spi-adi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Orson Zhai <orsonzhai@gmail.com>
11 - Baolin Wang <baolin.wang7@gmail.com>
12 - Chunyan Zhang <zhang.lyra@gmail.com>
15 ADI is the abbreviation of Anolog-Digital interface, which is used to access
28 Thus we introduce one property named "sprd,hw-channels" to configure hardware
33 Since we have multi-subsystems will use unique ADI to access analog chip, when
[all …]
/linux-6.12.1/Documentation/dev-tools/
Dclang-format.rst3 clang-format
6 ``clang-format`` is a tool to format C/C++/... code according to
10 ``clang-format`` can be used for several purposes:
12 - Quickly reformat a block of code to the kernel style. Specially useful
15 - Spot style mistakes, typos and possible improvements in files
18 - Help you follow the coding style rules, specially useful for those
22 Its configuration file is ``.clang-format`` in the root of the kernel tree.
24 coding style. They also try to follow :ref:`Documentation/process/coding-style.rst <codingstyle>`
28 another ``.clang-format`` file in a subfolder.
31 Linux distributions for a long time. Search for ``clang-format`` in
[all …]
/linux-6.12.1/drivers/nvmem/
Dsc27xx-efuse.c1 // SPDX-License-Identifier: GPL-2.0
9 #include <linux/nvmem-provider.h>
79 * On Spreadtrum platform, we have multi-subsystems will access the unique
81 * the multiple subsystems.
87 mutex_lock(&efuse->mutex); in sc27xx_efuse_lock()
89 ret = hwspin_lock_timeout_raw(efuse->hwlock, in sc27xx_efuse_lock()
92 dev_err(efuse->dev, "timeout to get the hwspinlock\n"); in sc27xx_efuse_lock()
93 mutex_unlock(&efuse->mutex); in sc27xx_efuse_lock()
102 hwspin_unlock_raw(efuse->hwlock); in sc27xx_efuse_unlock()
103 mutex_unlock(&efuse->mutex); in sc27xx_efuse_unlock()
[all …]
Dsprd-efuse.c1 // SPDX-License-Identifier: GPL-2.0
9 #include <linux/nvmem-provider.h>
79 * On Spreadtrum platform, we have multi-subsystems will access the unique
81 * the multiple subsystems.
87 mutex_lock(&efuse->mutex); in sprd_efuse_lock()
89 ret = hwspin_lock_timeout_raw(efuse->hwlock, in sprd_efuse_lock()
92 dev_err(efuse->dev, "timeout get the hwspinlock\n"); in sprd_efuse_lock()
93 mutex_unlock(&efuse->mutex); in sprd_efuse_lock()
102 hwspin_unlock_raw(efuse->hwlock); in sprd_efuse_unlock()
103 mutex_unlock(&efuse->mutex); in sprd_efuse_unlock()
[all …]
/linux-6.12.1/Documentation/process/
Dmaintainer-tip.rst1 .. SPDX-License-Identifier: GPL-2.0
7 ---------------------
9 The tip tree is a collection of several subsystems and areas of
11 aggregation tree for several sub-maintainer trees. The tip tree gitweb URL
14 The tip tree contains the following subsystems:
16 - **x86 architecture**
20 corresponding subsystems and routed directly to mainline from
22 x86-specific KVM and XEN patches.
24 Some x86 subsystems have their own maintainers in addition to the
30 mail alias which distributes mails to the x86 top-level maintainer
[all …]
/linux-6.12.1/Documentation/mm/
Dnuma.rst17 Each of the 'cells' may be viewed as an SMP [symmetric multi-processor] subset
18 of the system--although some components necessary for a stand-alone SMP system
20 connected together with some sort of system interconnect--e.g., a crossbar or
21 point-to-point link are common types of NUMA system interconnects. Both of
41 [cache misses] to be to "local" memory--memory on the same cell, if any--or
51 "closer" nodes--nodes that map to closer cells--will generally experience
63 the existing nodes--or the system memory for non-NUMA platforms--into multiple
66 application features on non-NUMA platforms, and as a sort of memory resource
68 [see Documentation/admin-guide/cgroup-v1/cpusets.rst]
71 subsystem, complete with its own free page lists, in-use page lists, usage
[all …]
/linux-6.12.1/tools/perf/Documentation/
Dperf-bench.txt1 perf-bench(1)
5 ----
6 perf-bench - General framework for benchmark suites
9 --------
14 -----------
18 --------------
19 -r::
20 --repeat=::
23 -f::
24 --format=::
[all …]
/linux-6.12.1/Documentation/userspace-api/gpio/
Dchardev.rst1 .. SPDX-License-Identifier: GPL-2.0
18 Read Documentation/driver-api/gpio/drivers-on-gpio.rst to avoid reinventing
21 Similarly, for multi-function lines there may be other subsystems, such as
23 Documentation/driver-api/pwm.rst, Documentation/w1/index.rst etc, that
28 The API is based around two major objects, the :ref:`gpio-v2-chip` and the
29 :ref:`gpio-v2-line-request`.
31 .. _gpio-v2-chip:
41 ``offset`` in the range from 0 to ``chip.lines - 1``, i.e. `[0,chip.lines)`.
43 Lines are requested from the chip using gpio-v2-get-line-ioctl.rst
51 ----------
[all …]
/linux-6.12.1/Documentation/userspace-api/
Diommufd.rst1 .. SPDX-License-Identifier: GPL-2.0+
20 I/O page tables for all IOMMUs, with room in the design to add non-generic
31 --------------------
35 - IOMMUFD_OBJ_IOAS, representing an I/O address space (IOAS), allowing map/unmap
41 - IOMMUFD_OBJ_DEVICE, representing a device that is bound to iommufd by an
44 - IOMMUFD_OBJ_HW_PAGETABLE, representing an actual hardware I/O page table
50 All user-visible objects are destroyed via the IOMMU_DESTROY uAPI.
52 The diagram below shows relationship between user-visible objects and kernel
68 | | IOAS |<--| |<------| | |
82 |------------>|iommu_domain| |struct device|
[all …]
/linux-6.12.1/tools/power/pm-graph/
Dsleepgraph.83 sleepgraph \- Suspend/Resume timing analysis
15 callgraph to give a detailed view of which devices/subsystems are
21 Generates output files in subdirectory: suspend-yymmdd-HHMMSS
27 \fB-h\fR
30 \fB-v\fR
33 \fB-verbose\fR
36 \fB-config \fIfile\fR
39 \fB-m \fImode\fR
42 \fB-o \fIname\fR
46 e.g. suspend-{hostname}-{date}-{time}
[all …]
DREADME8 pm-graph: suspend/resume/boot timing analysis tools
11 …Home Page: https://www.intel.com/content/www/us/en/developer/topic-technology/open/pm-graph/overvi…
13 Report bugs/issues at bugzilla.kernel.org Tools/pm-graph
14 - https://bugzilla.kernel.org/buglist.cgi?component=pm-graph&product=Tools
17 - Getting Started:
20 - Feature Summary:
21 https://www.intel.com/content/www/us/en/developer/topic-technology/open/pm-graph/features.html
23 - upstream version in git:
24 git clone https://github.com/intel/pm-graph/
27 - Overview
[all …]
/linux-6.12.1/Documentation/driver-api/
Ddma-buf.rst1 Buffer Sharing and Synchronization (dma-buf)
4 The dma-buf subsystem provides the framework for sharing buffers for
5 hardware (DMA) access across multiple device drivers and subsystems, and
10 process, and also to exchange buffers with other subsystems such as
13 This document describes the way in which kernel subsystems can use and
14 interact with the three main primitives offered by dma-buf:
16 - dma-buf, representing a sg_table and exposed to userspace as a file
17 descriptor to allow passing between processes, subsystems, devices,
19 - dma-fence, providing a mechanism to signal when an asynchronous
21 - dma-resv, which manages a set of dma-fences for a particular dma-buf
[all …]
Dinterconnect.rst1 .. SPDX-License-Identifier: GPL-2.0
8 ------------
20 on an SoC that can be multi-tiered.
22 Below is a simplified diagram of a real-world SoC interconnect bus topology.
26 +----------------+ +----------------+
27 | HW Accelerator |--->| M NoC |<---------------+
28 +----------------+ +----------------+ |
29 | | +------------+
30 +-----+ +-------------+ V +------+ | |
31 | DDR | | +--------+ | PCIe | | |
[all …]
/linux-6.12.1/Documentation/arch/arm/
Dinterrupts.rst5 2.5.2-rmk5:
7 major architecture-specific subsystems.
10 MMU TLB. Each MMU TLB variant is now handled completely separately -
26 SA1100 ------------> Neponset -----------> SA1111
28 -----------> USAR
30 -----------> SMC9196
33 exclusive of each other - if you're processing one interrupt from the
36 IDE PIO-based interrupt on the SA1111 excludes all other SA1111 and
37 SMC9196 interrupts until it has finished transferring its multi-sector
51 GPIO0-10, and another for all the rest. It is just a container for
[all …]
/linux-6.12.1/Documentation/driver-api/pm/
Ddevices.rst1 .. SPDX-License-Identifier: GPL-2.0
10 :Copyright: |copy| 2010-2011 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
18 management (PM) code is also driver-specific. Most drivers will do very
22 This writeup gives an overview of how drivers interact with system-wide
25 background for the domain-specific work you'd do with any specific driver.
31 Drivers will use one or both of these models to put devices into low-power
36 Drivers can enter low-power states as part of entering system-wide
37 low-power states like "suspend" (also known as "suspend-to-RAM"), or
39 "suspend-to-disk").
42 by implementing various role-specific suspend and resume methods to
[all …]
/linux-6.12.1/fs/xfs/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
10 on the SGI IRIX platform. It is completely multi-threaded, can
17 for complete details. This implementation is on-disk compatible
51 bool "Support deprecated case-insensitive ascii (ascii-ci=1) format"
56 on systems that have been coerced into using ISO 8859-1, and it does
58 the locale settings in userspace, so it corrupts UTF-8 names.
66 beginning with "ascii-ci=". If the string "ascii-ci=1" is found, the
67 filesystem is a case-insensitive filesystem. If no such string is
74 To continue supporting case-insensitivity (ascii-ci=1), say Y.
85 higher level guarantee of consistency. The on-disk data format for
[all …]
/linux-6.12.1/Documentation/admin-guide/
Dworkload-tracing.rst1 .. SPDX-License-Identifier: (GPL-2.0+ OR CC-BY-4.0)
4 Discovering Linux kernel subsystems used by a workload
7 :Authors: - Shuah Khan <skhan@linuxfoundation.org>
8 - Shefali Sharma <sshefali021@gmail.com>
9 :maintained-by: Shuah Khan <skhan@linuxfoundation.org>
21 `perf <https://man7.org/linux/man-pages/man1/perf.1.html>`_,
22 `stress-ng <https://www.mankier.com/1/stress-ng>`_,
23 `paxtest <https://github.com/opntr/paxtest-freebsd>`_.
30 `strace <https://man7.org/linux/man-pages/man1/strace.1.html>`_ is a
50 How do we gather fine-grained system information?
[all …]
/linux-6.12.1/drivers/mfd/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
57 tristate "Active-semi ACT8945A"
62 Support for the ACT8945A PMIC from Active-semi. This device
63 features three step-down DC/DC converters and four low-dropout
79 sun4i-gpadc-iio and the hwmon driver iio_hwmon.
82 called sun4i-gpadc.
113 tablets etc. It has 4 DC/DC step-down regulators, 3 DC/DC step-down
144 over at91-usart-serial driver and usart-spi-driver. Only one function
160 tristate "Atmel HLCDC (High-end LCD Controller)"
197 tristate "X-Powers AC100"
[all …]
/linux-6.12.1/drivers/media/pci/tw68/
Dtw68-core.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * tw68-core.c
10 * acknowledged. Full credit goes to them - any problems within this code
30 #include <linux/dma-mapping.h>
34 #include <media/v4l2-dev.h>
36 #include "tw68-reg.h"
47 static unsigned int video_nr[] = {[0 ... (TW68_MAXBOARDS - 1)] = UNSET };
51 static unsigned int card[] = {[0 ... (TW68_MAXBOARDS - 1)] = UNSET };
57 /* ------------------------------------------------------------------ */
60 * Please add any new PCI IDs to: https://pci-ids.ucw.cz. This keeps
[all …]
/linux-6.12.1/mm/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
33 compress them into a dynamically allocated RAM-based memory pool.
189 linux-mm@kvack.org and the zswap maintainers.
207 zsmalloc is a slab-based memory allocator designed to store
222 int "Maximum number of physical pages per-zspage"
295 specifically-sized allocations with user-controlled contents
299 user-controlled allocations. This may very slightly increase
301 of extra pages since the bulk of user-controlled allocations
302 are relatively long-lived.
317 Try running: slabinfo -DA
[all …]
/linux-6.12.1/Documentation/core-api/
Dcpu_hotplug.rst26 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
99 drwxr-xr-x 9 root root 0 Dec 21 16:33 cpu3
100 drwxr-xr-x 9 root root 0 Dec 21 16:33 cpu4
[all …]
/linux-6.12.1/Documentation/fb/
Dfbcon.rst16 etc. Theoretically, multi-colored fonts, blending, aliasing, and any feature
23 configuration tool. It is under Device Drivers->Graphics Support->
24 Console display driver support->Framebuffer Console Support.
31 always be available. However, using a chipset-specific driver will give you
36 support->Bootup logo.
38 Also, you will need to select at least one compiled-in font, but if
84 compiled-in fonts: 10x18, 6x10, 6x8, 7x14, Acorn8x8, MINI4x6,
112 3. fbcon=vc:<n1>-<n2>
128 - 0 - normal orientation (0 degree)
129 - 1 - clockwise orientation (90 degrees)
[all …]
/linux-6.12.1/kernel/
Dcpu.c36 #include <linux/percpu-rwsem.h>
48 * struct cpuhp_cpu_state - Per cpu hotplug state storage
57 * @node: Remote CPU node; for multi-instance, do a
59 * @last: For multi-instance rollback, remember how far we got
63 * @done_up: Signal completion to the issuer of the task for cpu-up
64 * @done_down: Signal completion to the issuer of the task for cpu-down
96 STATIC_LOCKDEP_MAP_INIT("cpuhp_state-up", &cpuhp_state_up_map);
98 STATIC_LOCKDEP_MAP_INIT("cpuhp_state-down", &cpuhp_state_down_map);
118 * struct cpuhp_step - Hotplug state machine step
129 int (*multi)(unsigned int cpu, member
[all …]
/linux-6.12.1/include/drm/
Ddrm_drv.h4 * Copyright (c) 2009-2010, Code Aurora Forum.
49 * enum drm_driver_feature - feature flags
81 * multi-plane updates are not guaranteed to be tear-free) should not
170 * struct drm_driver - DRM driver structure
182 * Backward-compatible driver callback to complete initialization steps
187 * proper and race-free way to set up a &struct drm_device.
193 * Zero on success, non-zero value on failure.
201 * setting up driver-private data structures like buffer allocators,
202 * execution contexts or similar things. Such driver-private resources
221 * Useful for tearing down driver-private data structures allocated in
[all …]
/linux-6.12.1/Documentation/networking/
Dcan.rst2 SocketCAN - Controller Area Network
20 .. _socketcan-motivation:
29 functionality. Usually, there is only a hardware-specific device
32 Queueing of frames and higher-level transport protocols like ISO-TP
34 character-device implementations support only one single process to
47 protocol family module and also vice-versa. Also, the protocol family
57 communicate using a specific transport protocol, e.g. ISO-TP, just
60 CAN-IDs, frames, etc.
62 Similar functionality visible from user-space could be provided by a
74 * **Abstraction:** In most existing character-device implementations, the
[all …]

123