PRIMARY, SECONDARY, NANOKERNEL, MICROKERNEL init levels are now
deprecated.
New init levels introduced: PRE_KERNEL_1, PRE_KERNEL_2, POST_KERNEL
to replace them.
Most existing code has instances of PRIMARY replaced with PRE_KERNEL_1,
SECONDARY with POST_KERNEL as SECONDARY has had a longstanding bug
where the documentation specified SECONDARY ran before the kernel started
up, but actually ran afterwards.
Change-Id: I771bc634e9caf7f17dbf214a270bc9967eed7d32
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Verify the thread priorities are within the bounds when starting a new
thread and when changing the priority of a thread.
Change-Id: I007b3b249e4b80235b6439cbee44cad2f31973bb
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
Since lower-numbered thread priorities are higher, the code can be
misleading when comparing priorities, and often require the same type of
comments. Instead, use utility inline functions that does the
comparisons.
_is_prio_higher already existed, but add comparisons for "lower than",
"higher than or equal to" and "lower than or equal to".
Change-Id: I8b58fe9a3dd0eb70e224e970fe851a2575ad468b
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
- Add missing irq_lock() before invoking power management.
- Only yield if the idle thread is a coop thread (in coop-only
configurations).
Change-Id: I030795e782590b3023f1d7883bbd058da2c45f4f
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
Add an assertion against unlocking mutex that is not locked.
Change-Id: I1032fb904e364015b486502c035529c8fe31de7a
Signed-off-by: Dmitriy Korovkin <dmitriy.korovkin@windriver.com>
include/ will be cleaned up in a subsequent patch.
Change-Id: If3609f5fc8562ec4a6fec4592aefeec155599cfb
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Making a reference to the common work queue code should not necessarily
drag in the system workqueue, since it is possible to use a workqueue
that is not the system workqueue. This is done by moving the system
workqueue into its own code module.
Moving the system workqueue to its own code module allows removing the
NANO_WORKQUEUE and SYSTEM_WORKQUEUE kconfig options, and compiling the
common workqueue code and system workqueue all the time. They are only
linked in the final image if a reference to them exist, same as the
other kernel modules.
Change-Id: I6f48d2542bda24f4702e7c2e317818dd082b3c11
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
It is now possible to specify the expiry and stop functions
of a statically-defined timer, just as can be done for a
dynamically-defined timer.
[Part of fix to ZEP-1186]
Change-Id: Ibb9096f3fdafdc6c904184587f86ecd52accdd66
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Adds standard prefix to symbolic option that flags a thread
as essential to system operation.
Change-Id: Ia904a81ce343fdd1cd44caaaeae641d822777f9b
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Port the power management test app to use unified kernel.
Change-Id: I2f10748be5ca7d9792f6e97c35f5f2aabab769e7
Signed-off-by: Ramesh Thomas <ramesh.thomas@intel.com>
QMSI 1.3 natively supports restoring the SoC and peripherals
after sleep.
The Zephyr Power Management shim layer is updated
in order to support QMSI functions.
The following functions have been added:
void _sys_soc_set_power_state(enum power_state);
void _sys_soc_power_state_post_ops(void);
In order to fully support deep sleep, the function
_sys_soc_set_power_state now support saving and
restoring CPU context and returns to the application.
_sys_soc_set_power_state function also abstracts
QMSI cpu states and enable the application to choose
between C1/C2 or C2LP states.
The QMSI power states are mapped as follows:
SYS_SOC_POWER_STATE_CPU_LPS -> power_cpu_c2lp
SYS_SOC_POWER_STATE_CPU_LPS_1 -> power_cpu_c2
SYS_SOC_POWER_STATE_CPU_LPS_2 -> power_cpu_c1
SYS_SOC_POWER_STATE_DEEP_SLEEP -> power_soc_deep_sleep
SYS_SOC_POWER_STATE_DEEP_SLEEP_1 -> power_soc_sleep
The following functions have been removed:
void _sys_soc_set_power_policy(uint32_t pm_policy);
int _sys_soc_get_power_policy(void);
FUNC_NORETURN void _sys_soc_put_deep_sleep(void);
void _sys_soc_put_low_power_state(void);
void _sys_soc_deep_sleep_post_ops(void);
Those changes are propagated to the samples.
All calls to QMSI are removed.
Jira: ZEP-1045, ZEP-993, ZEP-1047
Change-Id: I26822727985b63be0a310cc3590a3e71b8e72c8c
Signed-off-by: Julien Delayen <julien.delayen@intel.com>
Signed-off-by: Ramesh Thomas <ramesh.thomas@intel.com>
Defines an object tracing list for each kernel object type
that supports object tracing, and ensures that both statically
and dynamically defined objects are added to the appropriate list.
Ensure that each static kernel object is grouped together with
the other static objects of the same type. Revise the initialization
function for each kernel type (or create it, if needed) so that
each static object is added to the object tracing list for its
associated type.
Note 1: Threads are handled a bit differently than other kernel
object types. A statically-defined thread is added to the thread
list when the thread is started, not when the kernel initializes.
Also, a thread is removed from the thread list when the thread
terminates or aborts, unlike other types of kernel objects which
are never removed from an object tracing list. (Such support would
require the creation of APIs to "uninitialize" the kernel object.)
Note 2: The list head variables for all kernel object types
are now explicitly defined. However, the list head variable for
the ring buffer type continues to be implicitly defined for the
time being, since it isn't considered to be an core kernel object
type.
Change-Id: Ie24d41023e05b3598dc6b344e6871a9692bba02d
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Allows event objects to pend signals in a cumulative way using
the semaphore in a non-binary way.
Jira: ZEP-928
Change-Id: I3ce8a075ef89309118596ec5781c15d4f3289d34
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
Enables boot time timestamps for unified kernel.
Also Splits the source code into microkernel and nanokernel versions
instead of having common code. Not only does this make the code for
each project easier to read, but it also easily allows the nanokernel
version to link against the correct version of main().
Change-Id: Ie0afa2272c3347ebdacc0e3daeebbfe9583fe596
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
Before, the kernel would run the main() function twice; first
as an entry in k_task_list, and then again from _main(). The
_main() invocation would be using a potentially insufficient stack
size.
Now if an MDEF file declares a main() thread, invoke it from
_main(), but honor the desired priority and stack size.
Issue: ZEP-1145
Change-Id: I1abf38fc038e270059589b11d96fae1b3f265208
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Event is such an overloaded and generic term (event logger, *kernel*
event logger, "protocol" events in other subsystems, etc.), that it is
confusing for the name an object. Events are kinda like signals, but not
exactly, so we chose not to name them 'signals' to prevent further
confusion. "Alerts" felt like a good fit, since they are used to "alert"
an application that something of significance should be addressed and
because an "alert handler" can be proactively registered with an alert.
Change-Id: Ibfeb5eaf0e6e62702ac3fec281d17f8a63145fa1
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
This better aligns with the actual functionality of the object.
Change-Id: I70abf54f994e92abd7367251089ea4f735d273fe
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
Fix the error in thread rescheduling:
Fix Fast IRQ exit routine error when it reschedules threads if
(prio >= 0) || (sched_locked == 0) || (next_thread == _current),
while the correct condition for thread rescheduling is:
(prio >= 0) && (sched_locked == 0) && (next_thread != _current),
Fix regular IRQ error when the regular IRQ exit routine rescheduled
threads when (next_thread == _current) instead of
(next_thread != current).
Increased IDLE_STACK_SIZE for ARC architecture, to hold saved
registers.
Change-Id: I1d87a968e231e13822844b7564567e6ca310cde2
Signed-off-by: Dmitriy Korovkin <dmitriy.korovkin@windriver.com>
They were the same, standardize on the lowercase one.
Change-Id: I8bca080e45f3e0970697d4451e468b9081f96f5f
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
Some changes that went into k_idle.c were missing in idle.c
causing errors while building power management code for
unified kernel. Added the missing changes.
Tested with power_mgr app built for unified kernel.
Jira: ZEP-1139
Change-Id: I9fe005544f7ee69d3cb3ff10c649be28037fcf15
Signed-off-by: Ramesh Thomas <ramesh.thomas@intel.com>
Adapting to unified kernel naming of 'coop thread'.
Change-Id: I66cb766c2269acf0867e434bc21f633ea1111f89
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
Needed by the kernel event logger when it records a context switch.
The kernel event logger releases a semaphore when a new event is
available in the log so that a thread can consume the event. However,
giving that semaphore cannot add a context switch event itself in the
log or the logger would be caught in an infinite loop.
Change-Id: I571a4aa0d302775e09cdc2d654a6b61f8b2e42c7
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
Idle thread may need a bigger stack depending on extra work it has to
do, like power management or kernel event logging.
Change-Id: Iff691d7838036d602bad79799820b68ad55ad00f
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
Eliminates references to "fibers" and "tasks". Eliminates unnecessary
doxygen tags for internal routines. Miscellaneous other corrections
and improvements.
Change-Id: I0272fa477773c075799b67138bad5debcfd6b01e
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Existing code wasn't removing a thread from the kernel's list
of active threads if the thread terminated or aborted. (It did
remove it if the delayed starting of a thread was cancelled.)
Change-Id: Icc97917e33765696480d0e9bf31e882ef555d095
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
This is needed because some thread termination paths can be
invoked with no guarantee that thread preemption won't happen.
(It also aligns with the approach taken by the thread monitoring
initialization code.)
Change-Id: I28a384e051775390eb047498cb23fed22910e4df
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Renames _thread_exit() to _thread_monitoring_exit() to make
its purpose clearer. Revises the associated comments and
removes unnecessary doxygen tags.
Change-Id: I010a328d35d2d79d2a29b9d0b6c02097bb655989
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
The new kernel doesn't support the thread abort handler concept,
so only the legacy API for this capability is needed.
Change-Id: Ie809092e73b784504c3d298911d216bed8dd8993
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Fleshes out the prototype heap memory pool support
to make it fully operational. Noteworthy changes are
listed below:
Tweaks arguments to k_malloc() and k_free() to be more like
malloc() and free(). Similarly, modifies k_free() to take
no action when passed a NULL pointer.
Now stores the complete block descriptor at the start
of any block allocated from the heap memory pool. This
increases memory overhead by 4 bytes per block, but
streamlines the allocation and freeing algorithms. It also
ensures that the routines will work if the block descriptor
internals are changed in the future.
Now allows the heap memory pool to be defined using the
HEAP_MEM_POOL_SIZE configuration option. This will be the
official configuration approach in the unified kernel.
Also allows the heap memory pool to be defined using the
(undocumented) HEAP_SIZE entry in the MDEF. This is provided
for legacy reasons only.
Co-locates memory pool initialization code to keep the line
that causes memory pool initialization to be done during booting
right next to the routine that does the initialization.
Change-Id: Ifea9d88142fb434d4bea38bb1fcc4856a3853d8d
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Reworks k_work_q_start() so that it accepts its 3 configuration
settings directly, rather than forcing the caller to pass in a
configuration data structure.
Change-Id: Ic0bd1b94f1a1c8e0f8a84b3bd3677d59d0708734
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
PM control function is used only by the PM subsystem. Update
documentations to make it clear and name the relevant structures and
functions with _pm_ in the name.
Jira: ZEP-1044
Change-Id: I29e5b7690db34a228ed30a24a2e912e1360a0090
Signed-off-by: Ramesh Thomas <ramesh.thomas@intel.com>
Needed to resolve various undeclared symbols when SYS_POWER_MANAGEMENT
is enabled.
Jira: ZEP-1073
Change-Id: I21db2580efb15c80d84d9163fe9e8245d6dc0391
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
Moves the source code for ring buffers to the 'misc' area, since
it isn't really a central component of the kernel. (This also
aligns the ring buffer source code with its include file, which
is already under 'include/misc'.)
Change-Id: I765a383a05f51fa67d154446f412496e689f9702
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Add 'legacy_' prefix, as per the revised naming convention.
Change-Id: I0eaff33a561523ad11621b3104862c574930556e
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Since the unified kernel's build system doesn't properly handle
a file in the 'legacy' directory if it contains an initialization
function, some legacy code can't be located there. To avoid confusion,
the revised convention for legacy code is to keep any file that
contains only legacy code in the main kernel directory, and to give
it a "legacy_" prefix.
Change-Id: I019adc8f36611d4481bdcf31dde66597d4cf54ae
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Ensures that all APIs which accept a timeout value wait for at least
the specified amount of time, and do not time out prematurely.
* The kernel now waits for the next system clock tick to occur before
the timeout interval is considered to have started. (That is, the only
way to ensure a delay of N tick intervals is to wait for N+1 ticks
to occur.)
* Gets rid of ticks -> milliseconds -> ticks conversion in task_sleep()
and fiber_sleep() legacy APIs, since this introduces rounding that
-- coupled with the previous change -- can alter the number of ticks
being requested during the sleep operation.
* Corrects work queue API that was incorrectly shown to use a delay
measured in ticks, rather than milliseconds.
Change-Id: I8b04467237b24fb0364c8f344d872457418c18da
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
