mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-12-28 16:56:26 +00:00
docs: get rid of :c:type explicit declarations for structs
The :c:type:`foo` only works properly with structs before Sphinx 3.x. On Sphinx 3.x, structs should now be declared using the .. c:struct, and referenced via :c:struct tag. As we now have the automarkup.py macro, that automatically convert: struct foo into cross-references, let's get rid of that, solving several warnings when building docs with Sphinx 3.x. Reviewed-by: André Almeida <andrealmeid@collabora.com> # blk-mq.rst Reviewed-by: Takashi Iwai <tiwai@suse.de> # sound Reviewed-by: Mike Rapoport <rppt@linux.ibm.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
parent
abc59fd4a5
commit
9303c9d5e9
@ -63,10 +63,10 @@ Software staging queues
|
||||
~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
The block IO subsystem adds requests in the software staging queues
|
||||
(represented by struct :c:type:`blk_mq_ctx`) in case that they weren't sent
|
||||
(represented by struct blk_mq_ctx) in case that they weren't sent
|
||||
directly to the driver. A request is one or more BIOs. They arrived at the
|
||||
block layer through the data structure struct :c:type:`bio`. The block layer
|
||||
will then build a new structure from it, the struct :c:type:`request` that will
|
||||
block layer through the data structure struct bio. The block layer
|
||||
will then build a new structure from it, the struct request that will
|
||||
be used to communicate with the device driver. Each queue has its own lock and
|
||||
the number of queues is defined by a per-CPU or per-node basis.
|
||||
|
||||
@ -102,7 +102,7 @@ hardware queue will be drained in sequence according to their mapping.
|
||||
Hardware dispatch queues
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
The hardware queue (represented by struct :c:type:`blk_mq_hw_ctx`) is a struct
|
||||
The hardware queue (represented by struct blk_mq_hw_ctx) is a struct
|
||||
used by device drivers to map the device submission queues (or device DMA ring
|
||||
buffer), and are the last step of the block layer submission code before the
|
||||
low level device driver taking ownership of the request. To run this queue, the
|
||||
|
@ -52,7 +52,7 @@ Constraints and notes
|
||||
Design
|
||||
======
|
||||
|
||||
We add a :c:type:`struct bio_crypt_ctx` to :c:type:`struct bio` that can
|
||||
We add a struct bio_crypt_ctx to struct bio that can
|
||||
represent an encryption context, because we need to be able to pass this
|
||||
encryption context from the upper layers (like the fs layer) to the
|
||||
device driver to act upon.
|
||||
@ -85,7 +85,7 @@ blk-mq changes, other block layer changes and blk-crypto-fallback
|
||||
=================================================================
|
||||
|
||||
We add a pointer to a ``bi_crypt_context`` and ``keyslot`` to
|
||||
:c:type:`struct request`. These will be referred to as the ``crypto fields``
|
||||
struct request. These will be referred to as the ``crypto fields``
|
||||
for the request. This ``keyslot`` is the keyslot into which the
|
||||
``bi_crypt_context`` has been programmed in the KSM of the ``request_queue``
|
||||
that this request is being sent to.
|
||||
@ -118,7 +118,7 @@ of the algorithm being used adheres to spec and functions correctly).
|
||||
If a ``request queue``'s inline encryption hardware claimed to support the
|
||||
encryption context specified with a bio, then it will not be handled by the
|
||||
``blk-crypto-fallback``. We will eventually reach a point in blk-mq when a
|
||||
:c:type:`struct request` needs to be allocated for that bio. At that point,
|
||||
struct request needs to be allocated for that bio. At that point,
|
||||
blk-mq tries to program the encryption context into the ``request_queue``'s
|
||||
keyslot_manager, and obtain a keyslot, which it stores in its newly added
|
||||
``keyslot`` field. This keyslot is released when the request is completed.
|
||||
@ -188,7 +188,7 @@ keyslots supported by the hardware.
|
||||
The device driver also needs to tell the KSM how to actually manipulate the
|
||||
IE hardware in the device to do things like programming the crypto key into
|
||||
the IE hardware into a particular keyslot. All this is achieved through the
|
||||
:c:type:`struct blk_ksm_ll_ops` field in the KSM that the device driver
|
||||
struct blk_ksm_ll_ops field in the KSM that the device driver
|
||||
must fill up after initing the ``blk_keyslot_manager``.
|
||||
|
||||
The KSM also handles runtime power management for the device when applicable
|
||||
|
@ -4,8 +4,8 @@ FPGA Bridge
|
||||
API to implement a new FPGA bridge
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
* struct :c:type:`fpga_bridge` — The FPGA Bridge structure
|
||||
* struct :c:type:`fpga_bridge_ops` — Low level Bridge driver ops
|
||||
* struct fpga_bridge — The FPGA Bridge structure
|
||||
* struct fpga_bridge_ops — Low level Bridge driver ops
|
||||
* devm_fpga_bridge_create() — Allocate and init a bridge struct
|
||||
* fpga_bridge_register() — Register a bridge
|
||||
* fpga_bridge_unregister() — Unregister a bridge
|
||||
|
@ -102,8 +102,8 @@ API for implementing a new FPGA Manager driver
|
||||
----------------------------------------------
|
||||
|
||||
* ``fpga_mgr_states`` — Values for :c:member:`fpga_manager->state`.
|
||||
* struct :c:type:`fpga_manager` — the FPGA manager struct
|
||||
* struct :c:type:`fpga_manager_ops` — Low level FPGA manager driver ops
|
||||
* struct fpga_manager — the FPGA manager struct
|
||||
* struct fpga_manager_ops — Low level FPGA manager driver ops
|
||||
* devm_fpga_mgr_create() — Allocate and init a manager struct
|
||||
* fpga_mgr_register() — Register an FPGA manager
|
||||
* fpga_mgr_unregister() — Unregister an FPGA manager
|
||||
|
@ -45,7 +45,7 @@ An example of usage can be seen in the probe function of [#f2]_.
|
||||
API to add a new FPGA region
|
||||
----------------------------
|
||||
|
||||
* struct :c:type:`fpga_region` — The FPGA region struct
|
||||
* struct fpga_region — The FPGA region struct
|
||||
* devm_fpga_region_create() — Allocate and init a region struct
|
||||
* fpga_region_register() — Register an FPGA region
|
||||
* fpga_region_unregister() — Unregister an FPGA region
|
||||
|
@ -2,7 +2,7 @@
|
||||
Buffers
|
||||
=======
|
||||
|
||||
* struct :c:type:`iio_buffer` — general buffer structure
|
||||
* struct iio_buffer — general buffer structure
|
||||
* :c:func:`iio_validate_scan_mask_onehot` — Validates that exactly one channel
|
||||
is selected
|
||||
* :c:func:`iio_buffer_get` — Grab a reference to the buffer
|
||||
|
@ -10,7 +10,7 @@ applications manipulating sensors. The implementation can be found under
|
||||
Industrial I/O Devices
|
||||
----------------------
|
||||
|
||||
* struct :c:type:`iio_dev` - industrial I/O device
|
||||
* struct iio_dev - industrial I/O device
|
||||
* iio_device_alloc() - allocate an :c:type:`iio_dev` from a driver
|
||||
* iio_device_free() - free an :c:type:`iio_dev` from a driver
|
||||
* iio_device_register() - register a device with the IIO subsystem
|
||||
@ -66,7 +66,7 @@ Common attributes are:
|
||||
IIO device channels
|
||||
===================
|
||||
|
||||
struct :c:type:`iio_chan_spec` - specification of a single channel
|
||||
struct iio_chan_spec - specification of a single channel
|
||||
|
||||
An IIO device channel is a representation of a data channel. An IIO device can
|
||||
have one or multiple channels. For example:
|
||||
@ -77,7 +77,7 @@ have one or multiple channels. For example:
|
||||
* an accelerometer can have up to 3 channels representing acceleration on X, Y
|
||||
and Z axes.
|
||||
|
||||
An IIO channel is described by the struct :c:type:`iio_chan_spec`.
|
||||
An IIO channel is described by the struct iio_chan_spec.
|
||||
A thermometer driver for the temperature sensor in the example above would
|
||||
have to describe its channel as follows::
|
||||
|
||||
|
@ -8,7 +8,7 @@ software buffer for data. The implementation can be found under
|
||||
:file:`drivers/iio/buffer/hw-consumer.c`
|
||||
|
||||
|
||||
* struct :c:type:`iio_hw_consumer` — Hardware consumer structure
|
||||
* struct iio_hw_consumer — Hardware consumer structure
|
||||
* :c:func:`iio_hw_consumer_alloc` — Allocate IIO hardware consumer
|
||||
* :c:func:`iio_hw_consumer_free` — Free IIO hardware consumer
|
||||
* :c:func:`iio_hw_consumer_enable` — Enable IIO hardware consumer
|
||||
|
@ -10,7 +10,7 @@ IIO triggered buffer setup
|
||||
* :c:func:`iio_triggered_buffer_setup` — Setup triggered buffer and pollfunc
|
||||
* :c:func:`iio_triggered_buffer_cleanup` — Free resources allocated by
|
||||
:c:func:`iio_triggered_buffer_setup`
|
||||
* struct :c:type:`iio_buffer_setup_ops` — buffer setup related callbacks
|
||||
* struct iio_buffer_setup_ops — buffer setup related callbacks
|
||||
|
||||
A typical triggered buffer setup looks like this::
|
||||
|
||||
|
@ -2,7 +2,7 @@
|
||||
Triggers
|
||||
========
|
||||
|
||||
* struct :c:type:`iio_trigger` — industrial I/O trigger device
|
||||
* struct iio_trigger — industrial I/O trigger device
|
||||
* :c:func:`devm_iio_trigger_alloc` — Resource-managed iio_trigger_alloc
|
||||
* :c:func:`devm_iio_trigger_register` — Resource-managed iio_trigger_register
|
||||
iio_trigger_unregister
|
||||
@ -63,7 +63,7 @@ Let's see a simple example of how to setup a trigger to be used by a driver::
|
||||
IIO trigger ops
|
||||
===============
|
||||
|
||||
* struct :c:type:`iio_trigger_ops` — operations structure for an iio_trigger.
|
||||
* struct iio_trigger_ops — operations structure for an iio_trigger.
|
||||
|
||||
Notice that a trigger has a set of operations attached:
|
||||
|
||||
|
@ -125,7 +125,7 @@ responsible for tuning the device. It supports multiple algorithms to
|
||||
detect a channel, as defined at enum :c:func:`dvbfe_algo`.
|
||||
|
||||
The algorithm to be used is obtained via ``.get_frontend_algo``. If the driver
|
||||
doesn't fill its field at struct :c:type:`dvb_frontend_ops`, it will default to
|
||||
doesn't fill its field at struct dvb_frontend_ops, it will default to
|
||||
``DVBFE_ALGO_SW``, meaning that the dvb-core will do a zigzag when tuning,
|
||||
e. g. it will try first to use the specified center frequency ``f``,
|
||||
then, it will do ``f`` + |delta|, ``f`` - |delta|, ``f`` + 2 x |delta|,
|
||||
@ -140,7 +140,7 @@ define a ``.get_frontend_algo`` function that would return ``DVBFE_ALGO_HW``.
|
||||
a third type (``DVBFE_ALGO_CUSTOM``), in order to allow the driver to
|
||||
define its own hardware-assisted algorithm. Very few hardware need to
|
||||
use it nowadays. Using ``DVBFE_ALGO_CUSTOM`` require to provide other
|
||||
function callbacks at struct :c:type:`dvb_frontend_ops`.
|
||||
function callbacks at struct dvb_frontend_ops.
|
||||
|
||||
Attaching frontend driver to the bridge driver
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
@ -36,7 +36,7 @@ pad to a sink pad.
|
||||
Media device
|
||||
^^^^^^^^^^^^
|
||||
|
||||
A media device is represented by a struct :c:type:`media_device`
|
||||
A media device is represented by a struct media_device
|
||||
instance, defined in ``include/media/media-device.h``.
|
||||
Allocation of the structure is handled by the media device driver, usually by
|
||||
embedding the :c:type:`media_device` instance in a larger driver-specific
|
||||
@ -49,7 +49,7 @@ and unregistered by calling :c:func:`media_device_unregister()`.
|
||||
Entities
|
||||
^^^^^^^^
|
||||
|
||||
Entities are represented by a struct :c:type:`media_entity`
|
||||
Entities are represented by a struct media_entity
|
||||
instance, defined in ``include/media/media-entity.h``. The structure is usually
|
||||
embedded into a higher-level structure, such as
|
||||
:c:type:`v4l2_subdev` or :c:type:`video_device`
|
||||
@ -67,10 +67,10 @@ Interfaces
|
||||
^^^^^^^^^^
|
||||
|
||||
Interfaces are represented by a
|
||||
struct :c:type:`media_interface` instance, defined in
|
||||
struct media_interface instance, defined in
|
||||
``include/media/media-entity.h``. Currently, only one type of interface is
|
||||
defined: a device node. Such interfaces are represented by a
|
||||
struct :c:type:`media_intf_devnode`.
|
||||
struct media_intf_devnode.
|
||||
|
||||
Drivers initialize and create device node interfaces by calling
|
||||
:c:func:`media_devnode_create()`
|
||||
@ -79,7 +79,7 @@ and remove them by calling:
|
||||
|
||||
Pads
|
||||
^^^^
|
||||
Pads are represented by a struct :c:type:`media_pad` instance,
|
||||
Pads are represented by a struct media_pad instance,
|
||||
defined in ``include/media/media-entity.h``. Each entity stores its pads in
|
||||
a pads array managed by the entity driver. Drivers usually embed the array in
|
||||
a driver-specific structure.
|
||||
@ -87,8 +87,8 @@ a driver-specific structure.
|
||||
Pads are identified by their entity and their 0-based index in the pads
|
||||
array.
|
||||
|
||||
Both information are stored in the struct :c:type:`media_pad`,
|
||||
making the struct :c:type:`media_pad` pointer the canonical way
|
||||
Both information are stored in the struct media_pad,
|
||||
making the struct media_pad pointer the canonical way
|
||||
to store and pass link references.
|
||||
|
||||
Pads have flags that describe the pad capabilities and state.
|
||||
@ -104,7 +104,7 @@ Pads have flags that describe the pad capabilities and state.
|
||||
Links
|
||||
^^^^^
|
||||
|
||||
Links are represented by a struct :c:type:`media_link` instance,
|
||||
Links are represented by a struct media_link instance,
|
||||
defined in ``include/media/media-entity.h``. There are two types of links:
|
||||
|
||||
**1. pad to pad links**:
|
||||
@ -187,7 +187,7 @@ Use count and power handling
|
||||
|
||||
Due to the wide differences between drivers regarding power management
|
||||
needs, the media controller does not implement power management. However,
|
||||
the struct :c:type:`media_entity` includes a ``use_count``
|
||||
the struct media_entity includes a ``use_count``
|
||||
field that media drivers
|
||||
can use to track the number of users of every entity for power management
|
||||
needs.
|
||||
@ -213,11 +213,11 @@ prevent link states from being modified during streaming by calling
|
||||
The function will mark all entities connected to the given entity through
|
||||
enabled links, either directly or indirectly, as streaming.
|
||||
|
||||
The struct :c:type:`media_pipeline` instance pointed to by
|
||||
The struct media_pipeline instance pointed to by
|
||||
the pipe argument will be stored in every entity in the pipeline.
|
||||
Drivers should embed the struct :c:type:`media_pipeline`
|
||||
Drivers should embed the struct media_pipeline
|
||||
in higher-level pipeline structures and can then access the
|
||||
pipeline through the struct :c:type:`media_entity`
|
||||
pipeline through the struct media_entity
|
||||
pipe field.
|
||||
|
||||
Calls to :c:func:`media_pipeline_start()` can be nested.
|
||||
|
@ -27,7 +27,7 @@ V4L2 specification with respect to controls in a central place. And to make
|
||||
life as easy as possible for the driver developer.
|
||||
|
||||
Note that the control framework relies on the presence of a struct
|
||||
:c:type:`v4l2_device` for V4L2 drivers and struct :c:type:`v4l2_subdev` for
|
||||
:c:type:`v4l2_device` for V4L2 drivers and struct v4l2_subdev for
|
||||
sub-device drivers.
|
||||
|
||||
|
||||
|
@ -67,7 +67,7 @@ You should also set these fields of :c:type:`video_device`:
|
||||
file operation is called this lock will be taken by the core and released
|
||||
afterwards. See the next section for more details.
|
||||
|
||||
- :c:type:`video_device`->queue: a pointer to the struct :c:type:`vb2_queue`
|
||||
- :c:type:`video_device`->queue: a pointer to the struct vb2_queue
|
||||
associated with this device node.
|
||||
If queue is not ``NULL``, and queue->lock is not ``NULL``, then queue->lock
|
||||
is used for the queuing ioctls (``VIDIOC_REQBUFS``, ``CREATE_BUFS``,
|
||||
@ -81,7 +81,7 @@ You should also set these fields of :c:type:`video_device`:
|
||||
|
||||
- :c:type:`video_device`->prio: keeps track of the priorities. Used to
|
||||
implement ``VIDIOC_G_PRIORITY`` and ``VIDIOC_S_PRIORITY``.
|
||||
If left to ``NULL``, then it will use the struct :c:type:`v4l2_prio_state`
|
||||
If left to ``NULL``, then it will use the struct v4l2_prio_state
|
||||
in :c:type:`v4l2_device`. If you want to have a separate priority state per
|
||||
(group of) device node(s), then you can point it to your own struct
|
||||
:c:type:`v4l2_prio_state`.
|
||||
@ -95,7 +95,7 @@ You should also set these fields of :c:type:`video_device`:
|
||||
but it is used by both a raw video PCI device (cx8800) and a MPEG PCI device
|
||||
(cx8802). Since the :c:type:`v4l2_device` cannot be associated with two PCI
|
||||
devices at the same time it is setup without a parent device. But when the
|
||||
struct :c:type:`video_device` is initialized you **do** know which parent
|
||||
struct video_device is initialized you **do** know which parent
|
||||
PCI device to use and so you set ``dev_device`` to the correct PCI device.
|
||||
|
||||
If you use :c:type:`v4l2_ioctl_ops`, then you should set
|
||||
@ -138,7 +138,7 @@ ioctls and locking
|
||||
------------------
|
||||
|
||||
The V4L core provides optional locking services. The main service is the
|
||||
lock field in struct :c:type:`video_device`, which is a pointer to a mutex.
|
||||
lock field in struct video_device, which is a pointer to a mutex.
|
||||
If you set this pointer, then that will be used by unlocked_ioctl to
|
||||
serialize all ioctls.
|
||||
|
||||
|
@ -3,7 +3,7 @@
|
||||
V4L2 device instance
|
||||
--------------------
|
||||
|
||||
Each device instance is represented by a struct :c:type:`v4l2_device`.
|
||||
Each device instance is represented by a struct v4l2_device.
|
||||
Very simple devices can just allocate this struct, but most of the time you
|
||||
would embed this struct inside a larger struct.
|
||||
|
||||
@ -18,9 +18,9 @@ dev->driver_data field is ``NULL``, it will be linked to
|
||||
|
||||
Drivers that want integration with the media device framework need to set
|
||||
dev->driver_data manually to point to the driver-specific device structure
|
||||
that embed the struct :c:type:`v4l2_device` instance. This is achieved by a
|
||||
that embed the struct v4l2_device instance. This is achieved by a
|
||||
``dev_set_drvdata()`` call before registering the V4L2 device instance.
|
||||
They must also set the struct :c:type:`v4l2_device` mdev field to point to a
|
||||
They must also set the struct v4l2_device mdev field to point to a
|
||||
properly initialized and registered :c:type:`media_device` instance.
|
||||
|
||||
If :c:type:`v4l2_dev <v4l2_device>`\ ->name is empty then it will be set to a
|
||||
|
@ -44,18 +44,18 @@ such objects.
|
||||
|
||||
So to summarize:
|
||||
|
||||
- struct :c:type:`v4l2_fh` has two lists: one of the ``subscribed`` events,
|
||||
- struct v4l2_fh has two lists: one of the ``subscribed`` events,
|
||||
and one of the ``available`` events.
|
||||
|
||||
- struct :c:type:`v4l2_subscribed_event` has a ringbuffer of raised
|
||||
- struct v4l2_subscribed_event has a ringbuffer of raised
|
||||
(pending) events of that particular type.
|
||||
|
||||
- If struct :c:type:`v4l2_subscribed_event` is associated with a specific
|
||||
- If struct v4l2_subscribed_event is associated with a specific
|
||||
object, then that object will have an internal list of
|
||||
struct :c:type:`v4l2_subscribed_event` so it knows who subscribed an
|
||||
struct v4l2_subscribed_event so it knows who subscribed an
|
||||
event to that object.
|
||||
|
||||
Furthermore, the internal struct :c:type:`v4l2_subscribed_event` has
|
||||
Furthermore, the internal struct v4l2_subscribed_event has
|
||||
``merge()`` and ``replace()`` callbacks which drivers can set. These
|
||||
callbacks are called when a new event is raised and there is no more room.
|
||||
|
||||
|
@ -3,11 +3,11 @@
|
||||
V4L2 File handlers
|
||||
------------------
|
||||
|
||||
struct :c:type:`v4l2_fh` provides a way to easily keep file handle specific
|
||||
struct v4l2_fh provides a way to easily keep file handle specific
|
||||
data that is used by the V4L2 framework.
|
||||
|
||||
.. attention::
|
||||
New drivers must use struct :c:type:`v4l2_fh`
|
||||
New drivers must use struct v4l2_fh
|
||||
since it is also used to implement priority handling
|
||||
(:ref:`VIDIOC_G_PRIORITY`).
|
||||
|
||||
@ -16,11 +16,11 @@ whether a driver uses :c:type:`v4l2_fh` as its ``file->private_data`` pointer
|
||||
by testing the ``V4L2_FL_USES_V4L2_FH`` bit in :c:type:`video_device`->flags.
|
||||
This bit is set whenever :c:func:`v4l2_fh_init` is called.
|
||||
|
||||
struct :c:type:`v4l2_fh` is allocated as a part of the driver's own file handle
|
||||
struct v4l2_fh is allocated as a part of the driver's own file handle
|
||||
structure and ``file->private_data`` is set to it in the driver's ``open()``
|
||||
function by the driver.
|
||||
|
||||
In many cases the struct :c:type:`v4l2_fh` will be embedded in a larger
|
||||
In many cases the struct v4l2_fh will be embedded in a larger
|
||||
structure. In that case you should call:
|
||||
|
||||
#) :c:func:`v4l2_fh_init` and :c:func:`v4l2_fh_add` in ``open()``
|
||||
@ -102,18 +102,18 @@ Below is a short description of the :c:type:`v4l2_fh` functions used:
|
||||
memory can be freed.
|
||||
|
||||
|
||||
If struct :c:type:`v4l2_fh` is not embedded, then you can use these helper functions:
|
||||
If struct v4l2_fh is not embedded, then you can use these helper functions:
|
||||
|
||||
:c:func:`v4l2_fh_open <v4l2_fh_open>`
|
||||
(struct file \*filp)
|
||||
|
||||
- This allocates a struct :c:type:`v4l2_fh`, initializes it and adds it to
|
||||
the struct :c:type:`video_device` associated with the file struct.
|
||||
- This allocates a struct v4l2_fh, initializes it and adds it to
|
||||
the struct video_device associated with the file struct.
|
||||
|
||||
:c:func:`v4l2_fh_release <v4l2_fh_release>`
|
||||
(struct file \*filp)
|
||||
|
||||
- This deletes it from the struct :c:type:`video_device` associated with the
|
||||
- This deletes it from the struct video_device associated with the
|
||||
file struct, uninitialised the :c:type:`v4l2_fh` and frees it.
|
||||
|
||||
These two functions can be plugged into the v4l2_file_operation's ``open()``
|
||||
|
@ -110,7 +110,7 @@ pads:
|
||||
err = media_entity_pads_init(&sd->entity, npads, pads);
|
||||
|
||||
The pads array must have been previously initialized. There is no need to
|
||||
manually set the struct :c:type:`media_entity` function and name fields, but the
|
||||
manually set the struct media_entity function and name fields, but the
|
||||
revision field must be initialized if needed.
|
||||
|
||||
A reference to the entity will be automatically acquired/released when the
|
||||
|
@ -116,7 +116,7 @@ core, providing operations structures to the core. A notifier interface
|
||||
allows error conditions to be reported to the core.
|
||||
|
||||
Registration should be triggered by explicit setup done by the platform,
|
||||
supplying a struct :c:type:`regulator_init_data` for the regulator
|
||||
supplying a struct regulator_init_data for the regulator
|
||||
containing constraint and supply information.
|
||||
|
||||
Machine interface
|
||||
@ -144,7 +144,7 @@ a given system, for example supporting higher supply voltages than the
|
||||
consumers are rated for.
|
||||
|
||||
This is done at driver registration time` by providing a
|
||||
struct :c:type:`regulation_constraints`.
|
||||
struct regulation_constraints.
|
||||
|
||||
The constraints may also specify an initial configuration for the
|
||||
regulator in the constraints, which is particularly useful for use with
|
||||
|
@ -47,7 +47,7 @@ called USB Request Block, or URB for short.
|
||||
The URB structure
|
||||
=================
|
||||
|
||||
Some of the fields in struct :c:type:`urb` are::
|
||||
Some of the fields in struct urb are::
|
||||
|
||||
struct urb
|
||||
{
|
||||
|
@ -176,9 +176,9 @@ Kernel Mode Gadget API
|
||||
|
||||
Gadget drivers declare themselves through a struct
|
||||
:c:type:`usb_gadget_driver`, which is responsible for most parts of enumeration
|
||||
for a struct :c:type:`usb_gadget`. The response to a set_configuration usually
|
||||
involves enabling one or more of the struct :c:type:`usb_ep` objects exposed by
|
||||
the gadget, and submitting one or more struct :c:type:`usb_request` buffers to
|
||||
for a struct usb_gadget. The response to a set_configuration usually
|
||||
involves enabling one or more of the struct usb_ep objects exposed by
|
||||
the gadget, and submitting one or more struct usb_request buffers to
|
||||
transfer data. Understand those four data types, and their operations,
|
||||
and you will understand how this API works.
|
||||
|
||||
@ -339,8 +339,8 @@ multi-configuration devices (also more than one function, but not
|
||||
necessarily sharing a given configuration). There is however an optional
|
||||
framework which makes it easier to reuse and combine functions.
|
||||
|
||||
Devices using this framework provide a struct :c:type:`usb_composite_driver`,
|
||||
which in turn provides one or more struct :c:type:`usb_configuration`
|
||||
Devices using this framework provide a struct usb_composite_driver,
|
||||
which in turn provides one or more struct usb_configuration
|
||||
instances. Each such configuration includes at least one struct
|
||||
:c:type:`usb_function`, which packages a user visible role such as "network
|
||||
link" or "mass storage device". Management functions may also exist,
|
||||
|
@ -122,7 +122,7 @@ and their quirks, might have a MODULE_DEVICE_TABLE like this::
|
||||
Most USB device drivers should pass these tables to the USB subsystem as
|
||||
well as to the module management subsystem. Not all, though: some driver
|
||||
frameworks connect using interfaces layered over USB, and so they won't
|
||||
need such a struct :c:type:`usb_driver`.
|
||||
need such a struct usb_driver.
|
||||
|
||||
Drivers that connect directly to the USB subsystem should be declared
|
||||
something like this::
|
||||
|
@ -84,7 +84,7 @@ FS_IOC_ENABLE_VERITY
|
||||
--------------------
|
||||
|
||||
The FS_IOC_ENABLE_VERITY ioctl enables fs-verity on a file. It takes
|
||||
in a pointer to a :c:type:`struct fsverity_enable_arg`, defined as
|
||||
in a pointer to a struct fsverity_enable_arg, defined as
|
||||
follows::
|
||||
|
||||
struct fsverity_enable_arg {
|
||||
|
@ -34,20 +34,20 @@ substream. In this procedure, PCM hardware parameters are decided by
|
||||
interaction between applications and ALSA PCM core. Once decided, runtime of
|
||||
the PCM substream keeps the parameters.
|
||||
|
||||
The parameters are described in :c:type:`struct snd_pcm_hw_params`. This
|
||||
The parameters are described in struct snd_pcm_hw_params. This
|
||||
structure includes several types of parameters. Applications set preferable
|
||||
value to these parameters, then execute ioctl(2) with SNDRV_PCM_IOCTL_HW_REFINE
|
||||
or SNDRV_PCM_IOCTL_HW_PARAMS. The former is used just for refining available
|
||||
set of parameters. The latter is used for an actual decision of the parameters.
|
||||
|
||||
The :c:type:`struct snd_pcm_hw_params` structure has below members:
|
||||
The struct snd_pcm_hw_params structure has below members:
|
||||
|
||||
``flags``
|
||||
Configurable. ALSA PCM core and some drivers handle this flag to select
|
||||
convenient parameters or change their behaviour.
|
||||
``masks``
|
||||
Configurable. This type of parameter is described in
|
||||
:c:type:`struct snd_mask` and represent mask values. As of PCM protocol
|
||||
struct snd_mask and represent mask values. As of PCM protocol
|
||||
v2.0.13, three types are defined.
|
||||
|
||||
- SNDRV_PCM_HW_PARAM_ACCESS
|
||||
@ -55,7 +55,7 @@ The :c:type:`struct snd_pcm_hw_params` structure has below members:
|
||||
- SNDRV_PCM_HW_PARAM_SUBFORMAT
|
||||
``intervals``
|
||||
Configurable. This type of parameter is described in
|
||||
:c:type:`struct snd_interval` and represent values with a range. As of
|
||||
struct snd_interval and represent values with a range. As of
|
||||
PCM protocol v2.0.13, twelve types are defined.
|
||||
|
||||
- SNDRV_PCM_HW_PARAM_SAMPLE_BITS
|
||||
@ -78,7 +78,7 @@ The :c:type:`struct snd_pcm_hw_params` structure has below members:
|
||||
are going to be changed.
|
||||
``cmask``
|
||||
Read-only. After returning from ioctl(2), buffer in user space for
|
||||
:c:type:`struct snd_pcm_hw_params` includes result of each operation.
|
||||
struct snd_pcm_hw_params includes result of each operation.
|
||||
This mask represents which mask/interval parameter is actually changed.
|
||||
``info``
|
||||
Read-only. This represents hardware/driver capabilities as bit flags
|
||||
@ -110,10 +110,10 @@ The :c:type:`struct snd_pcm_hw_params` structure has below members:
|
||||
value to this parameter but some drivers intentionally set zero with
|
||||
a care of hardware design or data transmission protocol.
|
||||
|
||||
ALSA PCM core handles buffer of :c:type:`struct snd_pcm_hw_params` when
|
||||
ALSA PCM core handles buffer of struct snd_pcm_hw_params when
|
||||
applications execute ioctl(2) with SNDRV_PCM_HW_REFINE or SNDRV_PCM_HW_PARAMS.
|
||||
Parameters in the buffer are changed according to
|
||||
:c:type:`struct snd_pcm_hardware` and rules of constraints in the runtime. The
|
||||
struct snd_pcm_hardware and rules of constraints in the runtime. The
|
||||
structure describes capabilities of handled hardware. The rules describes
|
||||
dependencies on which a parameter is decided according to several parameters.
|
||||
A rule has a callback function, and drivers can register arbitrary functions
|
||||
@ -121,17 +121,17 @@ to compute the target parameter. ALSA PCM core registers some rules to the
|
||||
runtime as a default.
|
||||
|
||||
Each driver can join in the interaction as long as it prepared for two stuffs
|
||||
in a callback of :c:type:`struct snd_pcm_ops.open`.
|
||||
in a callback of struct snd_pcm_ops.open.
|
||||
|
||||
1. In the callback, drivers are expected to change a member of
|
||||
:c:type:`struct snd_pcm_hardware` type in the runtime, according to
|
||||
struct snd_pcm_hardware type in the runtime, according to
|
||||
capacities of corresponding hardware.
|
||||
2. In the same callback, drivers are also expected to register additional rules
|
||||
of constraints into the runtime when several parameters have dependencies
|
||||
due to hardware design.
|
||||
|
||||
The driver can refers to result of the interaction in a callback of
|
||||
:c:type:`struct snd_pcm_ops.hw_params`, however it should not change the
|
||||
struct snd_pcm_ops.hw_params, however it should not change the
|
||||
content.
|
||||
|
||||
Tracepoints in this category are designed to trace changes of the
|
||||
@ -163,7 +163,7 @@ fields are different according to type of the parameter. For parameters of mask
|
||||
type, the fields represent hexadecimal dump of content of the parameter. For
|
||||
parameters of interval type, the fields represent values of each member of
|
||||
``empty``, ``integer``, ``openmin``, ``min``, ``max``, ``openmax`` in
|
||||
:c:type:`struct snd_interval` in this order.
|
||||
struct snd_interval in this order.
|
||||
|
||||
Tracepoints in drivers
|
||||
======================
|
||||
|
@ -110,7 +110,7 @@ while (<IN>) {
|
||||
) {
|
||||
my $s = $1;
|
||||
|
||||
$structs{$s} = "struct :c:type:`$s`\\ ";
|
||||
$structs{$s} = "struct $s\\ ";
|
||||
next;
|
||||
}
|
||||
}
|
||||
|
@ -26,7 +26,7 @@ tree.
|
||||
|
||||
If a KSM page is shared between less than ``max_page_sharing`` VMAs,
|
||||
the node of the stable tree that represents such KSM page points to a
|
||||
list of :c:type:`struct rmap_item` and the ``page->mapping`` of the
|
||||
list of struct rmap_item and the ``page->mapping`` of the
|
||||
KSM page points to the stable tree node.
|
||||
|
||||
When the sharing passes this threshold, KSM adds a second dimension to
|
||||
|
@ -24,7 +24,7 @@ whether it is possible to manually override that default.
|
||||
although it is still in use by several architectures.
|
||||
|
||||
All the memory models track the status of physical page frames using
|
||||
:c:type:`struct page` arranged in one or more arrays.
|
||||
struct page arranged in one or more arrays.
|
||||
|
||||
Regardless of the selected memory model, there exists one-to-one
|
||||
mapping between the physical page frame number (PFN) and the
|
||||
@ -111,7 +111,7 @@ maps for non-volatile memory devices and deferred initialization of
|
||||
the memory map for larger systems.
|
||||
|
||||
The SPARSEMEM model presents the physical memory as a collection of
|
||||
sections. A section is represented with :c:type:`struct mem_section`
|
||||
sections. A section is represented with struct mem_section
|
||||
that contains `section_mem_map` that is, logically, a pointer to an
|
||||
array of struct pages. However, it is stored with some other magic
|
||||
that aids the sections management. The section size and maximal number
|
||||
@ -172,7 +172,7 @@ management.
|
||||
|
||||
The virtually mapped memory map allows storing `struct page` objects
|
||||
for persistent memory devices in pre-allocated storage on those
|
||||
devices. This storage is represented with :c:type:`struct vmem_altmap`
|
||||
devices. This storage is represented with struct vmem_altmap
|
||||
that is eventually passed to vmemmap_populate() through a long chain
|
||||
of function calls. The vmemmap_populate() implementation may use the
|
||||
`vmem_altmap` along with :c:func:`vmemmap_alloc_block_buf` helper to
|
||||
|
2
mm/ksm.c
2
mm/ksm.c
@ -81,7 +81,7 @@
|
||||
* different KSM page copy of that content
|
||||
*
|
||||
* Internally, the regular nodes, "dups" and "chains" are represented
|
||||
* using the same :c:type:`struct stable_node` structure.
|
||||
* using the same struct stable_node structure.
|
||||
*
|
||||
* In addition to the stable tree, KSM uses a second data structure called the
|
||||
* unstable tree: this tree holds pointers to pages which have been found to
|
||||
|
@ -48,12 +48,12 @@
|
||||
* boot regardless of the possible restrictions and memory hot(un)plug;
|
||||
* the ``physmem`` type is only available on some architectures.
|
||||
*
|
||||
* Each region is represented by :c:type:`struct memblock_region` that
|
||||
* Each region is represented by struct memblock_region that
|
||||
* defines the region extents, its attributes and NUMA node id on NUMA
|
||||
* systems. Every memory type is described by the :c:type:`struct
|
||||
* memblock_type` which contains an array of memory regions along with
|
||||
* the allocator metadata. The "memory" and "reserved" types are nicely
|
||||
* wrapped with :c:type:`struct memblock`. This structure is statically
|
||||
* wrapped with struct memblock. This structure is statically
|
||||
* initialized at build time. The region arrays are initially sized to
|
||||
* %INIT_MEMBLOCK_REGIONS for "memory" and %INIT_MEMBLOCK_RESERVED_REGIONS
|
||||
* for "reserved". The region array for "physmem" is initially sized to
|
||||
|
Loading…
Reference in New Issue
Block a user