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>
Provides users with a more compact and intuitive API for kernel
timers.
Provides legacy support for microkernel timers and nanokernel
timers by building on the new kernel timer infrastructure.
Each timer type requires only a small amount of additional
wrapper code, as well as the addition of a single pointer
field to the underlying timer structure, all of which will be
easily removed when support for the legacy APIs is discontinued.
Change-Id: I282dfaf1ed08681703baabf21e4dbc3516ee7463
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
- Reorders parameters where necessary
- Adds alignment parameter to K_MSGQ_DEFINE() for buffer alignment
- Renames parameters where necessary so they are more intuitive
Change-Id: I0b53105c04109127897bf4790e6908082f82da4e
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
Now invokes any microkernel-level init functions used by
legacy applications.
Change-Id: I8f68ddba764f13d037a679b74121713983f4aaba
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
K_THREAD_DEFINE() can no longer specify a thread group. However, it now
accepts a 'delay' parameter just as k_thread_spawn() does.
To create a statically defined thread that may belong to one or more thread
groups the new internal _MDEF_THREAD_DEFINE() macro is used. It is only used
for legacy purposes.
Threads can not both have a delayed start AND belong to a thread group.
Jira: ZEP-916
Change-Id: Ia6e59ddcb4fc68f1f60f9c6b0f4f227f161ad1bb
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
Tweak mailbox API parameters so that not only are their descriptions
correct, but their names match across header file and C file.
Change-Id: Ieeb3a40fb7c535a5eac2e06533d01d13aaf69181
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
- Reorders parameters where necessary
- Adds alignment parameter to K_PIPE_DEFINE()
- Renames parameters where necessary so they are sync'd
between header and source files
Change-Id: I4f2367abc28aff646cc90beb9f08bb266e143b0c
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
Reverts a change that was made to the defragmentation routine
when memory pool support was ported from the microkernel to the
unified kernel.
The change was intended to improve the readability of the algorithm,
but introduced a subtle change in behavior. For example, when
k and i are zero and the number of block set entries is one
the original algorithm did not execute the while loop, while the
revised algorithm executed the loop once.
Change-Id: I2b0263a8d7b80846013c459847817d314f803457
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Build breaks when enabling CONFIG_NEWLIB_LIBC because it has its own
sched.h file.
This is a bad symptom of a greater issue: the build system passes many
'-I<path>' options to the compiler, and that allows including header
files by simply specifying their names (when located somewhere else than
<zephyr>/include/) and can cause clashes when several files in different
locations have the same name, like in this case.
Fixes ZEP-1062.
Change-Id: I81d1d69ee6669a609cd0c420b1b8f870d17dcb67
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
Gets rid of official support for dynamic timer allocation
in the unified kernel, since users can easily define and
initialize timers at any time. Legacy support for dynamic
timers is maintained for backwards compatibility reasons
for the time being ...
Change-Id: I12b3e25914fe11e3886065bee4e96fb96f59b299
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Folds this API into k_stack_init() to provide a single API
that requires the caller to pass in the stack buffer, just
as is done for other kernel objects initialization APIs
involving the use of a buffer.
Change-Id: Icad5fd6e5387d634738d1574f8dfbc5421cd642d
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
* Gets rid of k_current_priority_get(). Users can just call
k_thread_priority_get(k_current_get()) instead.
* Declares k_thread_priority_get() in kernel.h, where it
really belongs.
* Removes duplicate declaration of k_thread_priority_set().
Change-Id: I616ae6f2e06c95ecba3b92324186b3fa29162fd1
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Do not include timeout_q.h when !SYS_CLOCK_EXIST, this allows removing
_unpend_thread_timing_out() in that case.
Have _abort_thread_timeout() return 0 (success) when !SYS_CLOCK_EXIST.
With this change, the minimal footprint nanokernel project compiles for
the unified kernel.
Change-Id: Ifbf9167a82fb3ebcf6941bf3f85c105c23c9060c
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
It is always needed by the kernel, since the return codes are now
errnos. CONFIG_ERRNO is the mechanism for having a per-thread errno, not
using errno values.
Change-Id: I4ed14896a342f4122793d91b13c41b4a6a74716d
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
Timers are based off timeouts now, which can only be enabled when the
system clock is enabled. So the three are really just one setting now.
Keep the NANO_TIMERS and NANO_TIMEOUTS around for now until all
middleware that rely on them is updated. They are always enabled when
SYS_CLOCK_EXISTS is enabled.
Change-Id: Iaef1302ef9ad8fc5640542ab6d7304d67aafcfdc
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
- ensure dummy thread's stack is aligned
- rename nano_init() to prepare_multithreading
- move _Swap() to main thread into its own function
Change-Id: I6c8dbe2a4e034f3db90b55d1a5e30bc73bac3d50
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
