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Rename to _CPU_SMP_Processor_event_receive().
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Rename to _CPU_SMP_Processor_event_broadcast().
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Delete bsp_smp_interrupt_cpu().
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Add and use _SMP_Get_current_processor() and
rtems_smp_get_current_processor().
Delete bsp_smp_interrupt_cpu().
Change type of current processor index from int to uint32_t to match
_SMP_Processor_count type.
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Move the SMP lock implementation to the CPU port. An optimal SMP lock
implementation is highly architecture dependent. For example the memory
models may be fundamentally different.
The new SMP lock API has a flaw. It does not provide the ability to use
a local context for acquire and release pairs. Such a context is
necessary to implement for example the Mellor-Crummey and Scott (MCS)
locks. The SMP lock is currently used in _Thread_Disable_dispatch() and
_Thread_Enable_dispatch() and makes them to a giant lock acquire and
release. Since these functions do not pass state information via a
local context there is currently no use case for such a feature.
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Delete bsp_smp_wait_for(). Other parts of the system work without
timeout, e.g. the spinlocks. Using a timeout here does not make the
system more robust.
Delete bsp_smp_cpu_state and replace it with Per_CPU_State. The
Per_CPU_State follows the Score naming conventions. Add
_Per_CPU_Change_state() and _Per_CPU_Wait_for_state() functions to
change and observe states.
Use Per_CPU_State in Per_CPU_Control instead of the anonymous integer.
Add _CPU_Processor_event_broadcast() and _CPU_Processor_event_receive()
functions provided by the CPU port. Use these functions in
_Per_CPU_Change_state() and _Per_CPU_Wait_for_state().
Add prototype for _SMP_Send_message().
Delete RTEMS_BSP_SMP_FIRST_TASK message. The first context switch is
now performed in rtems_smp_secondary_cpu_initialize(). Issuing the
first context switch in the context of the inter-processor interrupt is
not possible on systems with a modern interrupt controller. Such an
interrupt controler usually requires a handshake protocol with interrupt
acknowledge and end of interrupt signals. A direct context switch in an
interrupt handler circumvents the interrupt processing epilogue and may
leave the system in an inconsistent state.
Release lock in rtems_smp_process_interrupt() even if no message was
delivered. This prevents deadlock of the system.
Simplify and format _SMP_Send_message(),
_SMP_Request_other_cores_to_perform_first_context_switch(),
_SMP_Request_other_cores_to_dispatch() and
_SMP_Request_other_cores_to_shutdown().
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This commit deletes all RTEMS ChangeLog files. These files have been abandoned
since converting to git version control. The historical data may be recovered
by checking out any commit before this one. Most of the contents of these
ChangeLog files can also be found in the git log.
Two external ChangeLog files, ChangeLog.slac and ChangeLog.zlib, remain.
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This is the result of a sed script which converts all uses
of @{ into a consistent form.
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http://www.google-melange.com/gci/task/view/google/gci2012/7983217
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Add CPU port type CPU_Exception_frame and function
_CPU_Exception_frame_print().
The CPU ports of avr, bfin, h8300, lm32, m32c, m32r, m68k, nios2, sh,
sparc64, and v850 use an empty default implementation of
_CPU_Exception_frame_print().
Add rtems_exception_frame and rtems_exception_frame_print().
Add RTEMS_FATAL_SOURCE_EXCEPTION for CPU exceptions. Use rtems_fatal()
with source RTEMS_FATAL_SOURCE_EXCEPTION in CPU ports of i386, powerpc,
and sparc for unexpected exceptions.
Add third parameter to RTEMS_BSP_CLEANUP_OPTIONS() which controls the
BSP_PRINT_EXCEPTION_CONTEXT define used in the default
bsp_fatal_extension().
Add test sptests/spfatal26.
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Add and use new CPU port define CPU_SIZEOF_POINTER. It must be an
integer literal that can be used by the assembler. This value will be
used to calculate offsets of structure members. These offsets will be
used in assembler code.
The size of a pointer is part of the application binary interface (ABI)
and thus independent of the actual programming language. The compiler
will provide defines to determine the current ABI. We use these defines
to select the appropriate CPU_SIZEOF_POINTER value.
Static assertions in the new file "cpukit/score/src/percpuasm.c" will
ensure that the value of CPU_SIZEOF_POINTER is consistent with the
current compiler settings. Also the offset values used by assembler
code are verfied.
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Script does what is expected and tries to do it as
smartly as possible.
+ remove occurrences of two blank comment lines
next to each other after Id string line removed.
+ remove entire comment blocks which only exited to
contain CVS Ids
+ If the processing left a blank line at the top of
a file, it was removed.
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See http://www.rtems.org/pipermail/rtems-devel/2012-May/001006.html
for details.
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PR 1914/cpukit
* rtems/score/cpu.h: Document CPU_TIMESTAMP_USE_STRUCT_TIMESPEC,
CPU_TIMESTAMP_USE_INT64, and CPU_TIMESTAMP_USE_INT64_INLINE.
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* cpu.c: Remove /*PAGE markers which were interpreted by a long dead
print script.
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* Makefile.am: Reformat.
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* rtems/score/cpu.h: Add RTEMS_COMPILER_NO_RETURN_ATTRIBUTE to
_CPU_Context_restore() because it does not return. Telling GCC this
avoids generation of dead code.
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PR 1599/cpukit
* cpu_asm.c: Rename _Context_Switch_necessary to
_Thread_Dispatch_necessary to more properly reflect the intent.
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PR 1635/cpukit
* rtems/score/cpu.h, rtems/score/types.h: Refactoring of priority
handling, to isolate the bitmap implementation of priorities in the
supercore so that priority management is a little more modular. This
change is in anticipation of scheduler implementations that can
select how they manage tracking priority levels / finding the highest
priority ready task. Note that most of the changes here are simple
renaming, to clarify the use of the bitmap-based priority management.
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* rtems/score/cpu.h: Include <rtems/score/types.h> first.
* rtems/score/types.h: Use <rtems/score/basedefs.h> header file.
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PR 1573/cpukit
* cpu_asm.c, rtems/score/cpu.h: Add a per cpu data structure which
contains the information required by RTEMS for each CPU core. This
encapsulates information such as thread executing, heir, idle and
dispatch needed.
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* cpu.c, cpu_asm.c: Add include of config.h
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* cpu.c, rtems/score/cpu.h: Change prototype of IDLE thread to
consistently return void * and take a uintptr_t argument.
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* cpu.c, rtems/score/cpu.h: Eliminate _CPU_Thread_dispatch_pointer and
passing address of _Thread_Dispatch to _CPU_Initialize. Clean up
comments.
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* cpu_asm.c, rtems/score/cpu.h, rtems/score/types.h: Corrections and
updates.
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* rtems/score/types.h: Do not define boolean, single_precision,
double_precision unless RTEMS_DEPRECATED_TYPES is given.
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* rtems/score/types.h: Include stdbool.h.
Use bool as base-type for boolean.
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* cpu.c, rtems/score/cpu.h: Correct prototype of Idle threads.
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* rtems/score/cpu.h: Add CPU_SIMPLE_VECTORED_INTERRUPTS porting
parameter to indicate that the port uses the Simple Vectored
Interrupt model or the Programmable Interrupt Controller Model. The
PIC model is implemented primarily in the BSP and it is responsible
for all memory allocation.
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* rtems/score/cpu.h: Remove most doxygen warnings.
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* rtems/score/cpu.h: Add _CPU_Context_Get_SP() for stack check utility.
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* rtems/score/cpu.h: Style.
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* rtems/score/cpu.h: Fix Doxygen.
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* cpu.c, rtems/score/cpu.h: Move interrupt_stack_size field from CPU
Table to Configuration Table. Eliminate CPU Table from all ports.
Delete references to CPU Table in all forms.
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* rtems/score/cpu.h: Moved most of the remaining CPU Table fields to
the Configuration Table. This included pretasking_hook,
predriver_hook, postdriver_hook, idle_task, do_zero_of_workspace,
extra_mpci_receive_server_stack, stack_allocate_hook, and
stack_free_hook. As a side-effect of this effort some multiprocessing
code was made conditional and some style clean up occurred.
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* score/cpu/arm/cpu.c, score/cpu/avr/cpu.c, score/cpu/bfin/cpu.c,
score/cpu/c4x/cpu.c, score/cpu/h8300/cpu.c, score/cpu/i386/cpu.c,
score/cpu/m68k/cpu.c, score/cpu/mips/cpu.c, score/cpu/nios2/cpu.c,
score/cpu/no_cpu/cpu.c, score/cpu/sh/cpu.c, score/cpu/sparc/cpu.c,
cpukit/sapi/src/exinit.c: Move copying of CPU Table to shared
executive initialization.
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* rtems/score/cpu.h:
Use Context_Control_fp* instead of void* for fp_contexts.
Eliminate evil casts.
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Eliminate evil casts.
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