This adds FPU sharing support with a lazy context switching algorithm.
Every thread is allowed to use FPU/SIMD registers. In fact, the compiler
may insert FPU reg accesses in anycontext to optimize even non-FP code
unless the -mgeneral-regs-only compiler flag is used, but Zephyr
currently doesn't support such a build.
It is therefore possible to do FP access in IRS as well with this patch
although IRQs are then disabled to prevent nested IRQs in such cases.
Because the thread object grows in size, some tests have to be adjusted.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Document the fact than NVS image of different wbs
are compatible each other if psychical ATE size
is kept.
Signed-off-by: Andrzej Puzdrowski <andrzej.puzdrowski@nordicsemi.no>
Signed-off-by: Damian Krolik <damian.krolik@nordicsemi.no>
This provides the documentation of scope required as a stage towards
removing deprecation for CONFIG_MULTITHREADING=n. The specific lists
of what does work will follow as the code base is inspected and
updated.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
Reboot functionality has nothing to do with PM, so move it out to the
subsys/os folder.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Refactor best practices from the API refactoring issue and integrate
them into the existing documentation.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
Reference the helper macro used to obtain the containing context
structure from a work item pointer within a work handler. Also
document the proper way to do this for delayable work items.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
Point out that this macro can be used to avoid the need to initialize
a work item. This is still of limited use since it can't statically
initialize a work item within another structure.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
Use queued uniformly when referring to items that are in a work queue,
rather than "pending" which includes items that are scheduled or
running.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
Add additional API to stream_flash that can be used to make
stream write progress persistent using the settings subsystem.
This functionality makes it possible to resume a write operation
after it was interrupted, e.g. by power loss.
Signed-off-by: Jonathan Nilsen <Jonathan.Nilsen@nordicsemi.no>
Extended and refactored logging documentation. Added details about
logging v2 and comparison with v1.
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
We had one extra level in the docs, reduce and show modbus details
directly instead of the extra step.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Move out of misc/ and put in own folder and add the grouping to doxygen
to be able to reference the doxygen docs into RST.
Move each item into their own file to reduce clutter and to make it
less crowded in one single page.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
The implementation of blocking calls is common for all the client
models.
This change reduces the code duplication by introducing new API that
helps to manage acknowledged messages.
Signed-off-by: Pavel Vasilyev <pavel.vasilyev@nordicsemi.no>
The net_capture API documentation was not referenced by
network documentation so the API reference documentation
was not generated for it. This commit adds links to the
net_capture API.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Add information to documentation how to monitor and capture
received and sent network traffic.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This patch removes sdhc_api references since such API
does not actually exist. SD card controller drivers
use disc driver interface. Accordingly, the SDHC documentation,
which actually describes how to connect a SD card via SPI
and has little to do with SD host controller (SDHC),
is also moved to disk access page and adapted.
Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>
Add information about power state constraints and more information
about power management policy.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
This feature predated the tickless kernel and has been in legacy mode
for a while. We now have no drivers or systems that do not support
tickless, so remove this option and cleanup the code to only use
tickless.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
The clock/timer APIs are not application facing APIs, however, similar
to arch_ and a few other APIs they are available to implement drivers
and add support for new hardware and are documented and available to be
used outside of the clock/kernel subsystems.
Remove the leading z_ and provide them as clock_* APIs for someone
writing a new timer driver to use.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
This new subsystem can be used to supervise individual threads. It
is based on a regularly updated kernel timer, whose ISR is never
actually called in regular system operation.
An existing hardware watchdog can be used as an optional fallback if
the task watchdog itself gets stuck.
Signed-off-by: Martin Jäger <martin@libre.solar>
There are several interesting use caseis of VFS scattered around
in samples, for example usage of FAT in RAM in USB mass storage
that are worth mentioning in VFS reference documentation.
Signed-off-by: Dominik Ermel <dominik.ermel@nordicsemi.no>
Replace *_thread_resource_pool_assign() in the reference with the new
k_thread_heap_assign() since both k_thread_resource_pool_assign() and
z_thread_resource_pool_assign() has been removed prio to v2.5 (by the
commit c770cab1a3 and 3c2c1d85b0 respectively) along with the
k_mem_pool API removal.
For the resource pool inheritance test, the variables with "res_pool"
string has been replaced by "heap_mem" to align with the documentation
fix. No functionality has been changed.
Signed-off-by: Yasushi SHOJI <yashi@spacecubics.com>
The xtensa atomics layer was written with hand-coded assembly that had
to be called as functions. That's needlessly slow, given that the low
level primitives are a two-instruction sequence. Ideally the compiler
should see this as an inline to permit it to better optimize around
the needed barriers.
There was also a bug with the atomic_cas function, which had a loop
internally instead of returning the old value synchronously on a
failed swap. That's benign right now because our existing spin lock
does nothing but retry it in a tight loop anyway, but it's incorrect
per spec and would have caused a contention hang with more elaborate
algorithms (for example a spinlock with backoff semantics).
Remove the old implementation and replace with a much smaller inline C
one based on just two assembly primitives.
This patch also contains a little bit of refactoring to address the
scheme has been split out into a separate header for each, and the
ATOMIC_OPERATIONS_CUSTOM kconfig has been renamed to
ATOMIC_OPERATIONS_ARCH to better capture what it means.
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
Revise the description of queues, work items, and delayable work items
to reflect the terminology and API provided by the new implementation.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
