The cache API currently shipped in Zephyr is assuming that the cache
controller is always on-core thus managed at the arch level. This is not
always the case because many SoCs rely on external cache controllers as
a peripheral external to the core (for example PL310 cache controller
and the L2Cxxx family). In some cases you also want a single driver to
control a whole set of cache controllers.
Rework the cache code introducing support for external cache
controllers.
Signed-off-by: Carlo Caione <ccaione@baylibre.com>
Remove this intrusive tracing feature in favor of the new object tracing
using the main tracing feature in zephyr. See #33603 for the new tracing
coverage for all objects.
This will allow for support in more tools and less reliance on GDB for
tracing objects.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Add Poll API and Work Poll tracing, default hooks, and documentation.
Signed-off-by: Torbjörn Leksell <torbjorn.leksell@percepio.com>
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Device pm runtime was using semaphore to protect critical section but
enable / disable functions were waiting on the semaphore. So, just
replace it with a spin lock.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
The sync API was using k_poll_signal and in certain conditions is
possible multiple threads waiting on a signal leading to an undefined
behavior.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
This uses bitarrays for allocating and deallocating virtual
addresses with k_mem_map() and k_mem_unmap(). This will
allow us to reuse virtual addresses.
Fixes#28900
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This adds a new function prototype for arch_page_phys_get()
which will be used to translate mapped virtual addresses back
to physical memory addresses. This is needed for the future
k_mem_unmap() function which requires this to find
the corresponding page frame. It is faster to look through
the page tables instead of doing linear search of the page
frame array.
A weak function is provided in case arch_page_phys_get()
is not implemented at the arch level. This simply goes
through all the page frame and find the one which has
mapped to the virtual address.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
When we start allowing unmapping of memory region, there is no
exact way to know if k_mem_map() is called with guard page option
specified or not. So just unconditionally enable guard pages on
both sides of the memory region to hopefully catch access
violations.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This provides a counterpart to z_phys_map() which can be used
to temporary map memory region during boot process, and
subsequently discards the mapping.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
work_timeout() is a function, a statement like "(void)work_timeout;"
has no effect.
Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Remove the config BOOT_TIME_MEASUREMENT and corresponding #ifdef'd code
throughout (kernel/init.c, idle.c, core/common.S , reset.S, ... ) which
hold the extern hooks for z_timestamp_main and z_timestamp_idle in the
removed boot_time test suite.
Signed-off-by: Jennifer Williams <jennifer.m.williams@intel.com>
smp.c only has to be built if CONFIG_SMP is enabled. Remove
preprocessor checks from the file itself and update cmake rules
instead.
Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Usually Zephyr boots all secondary CPUs as a part of system
boot. Some applications however need an ability to boot on
the main CPU only and enable secondary CPUs selectively at
run-time. Add a Kconfig option to support this behaviour.
When booting CPUs on demand applications also need helpers
to initialise a dummy thread and begin threaded execution
on those CPUs, add two such helpers.
Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Avoid fetching files which use scheduler. By explicitly avoiding
including RTOS specific files we ensure that it is not fetched
accidently.
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
Ensure that k_heap is not attempt to block the thread when
timeout is set and space cannot be allocated.
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
Mem_slab supports allocation with timeout which blocks the context
if no slab is available. Updated to treat every timeout as K_NO_WAIT
when multithreading is disabled.
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
Updated timer to not touch thread/scheduler code when multithreading
is off.
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
_kernel struct can be used when multithreading is disabled.
In that case sched.c may not be compiled.
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
K_busy_wait is the only function from thread.c that is used when
CONFIG_MULTITHREADING=n. Moving to timeout since it fits better there
as it requires sys clock to be present.
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
Return NULL instead of return numeric zero for pointer type.
Current usage violates MISRA rule 11.9.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This renames the obj_list element in struct dyn_obj to
dobj_list, to avoid identifier collision with the static
obj_list defined in userspace.c.
Violation of MISRA rule 5.9.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
work_queue_main() was missing final else statement
in the if else if construct. This commit adds else {}
to comply with coding guideline 15.7. Includes a
context-specific description of why this branch is empty.
Signed-off-by: Jennifer Williams <jennifer.m.williams@intel.com>
z_timeout_end_calc() was missing final else statement
in the if else if construct. This commit pulls the last
condition into a final else {} to comply with guideline
15.7.
Signed-off-by: Jennifer Williams <jennifer.m.williams@intel.com>
register_events() and signal_poll_event() missing final
else statement in the if else if construct. This commit adds
else {} to comply with coding guideline 15.7.
Signed-off-by: Jennifer Williams <jennifer.m.williams@intel.com>
Devices that do not require PM should just use NULL.
`device_pm_control_nop` is still kept as an alias to NULL untill all
in-tree usage is replaced with NULL.
Code relying on device_pm_control function now returns -ENOTSUP
(equivalent to calling device_pm_control_nop).
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Due to the use of gperf to generate hash table for kobjects,
the addresses of these kobjects cannot change during the last
few phases of linking (especially between zephyr_prebuilt.elf
and zephyr.elf). Because of this, the gperf generated data
needs to be placed at the end of memory to avoid pushing symbols
around in memory. This prevents moving these generated blocks
to earlier sections, for example, pinned data section needed
for demand paging. So create placeholders for use in
intermediate linking to reserve space for these generated blocks.
Due to uncertainty on the size of these blocks, more space is
being reserved which could result in wasted space. Though, this
retains the use of hash table for faster lookup.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
The return value is documented to be true if the work was pending, but
the implementation returned true only if the work was actually running
(i.e. the caller had to wait). It should also return true if
scheduled or submitted work was cancelled.
Note that this means the return value cannot be used to determine
whether the call slept.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
