| Commit message (Collapse) | Author | Age | Files | Lines |
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- This patch is based on the patch attached to #3552 submitted
by jameszxj.
Closes #3552
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Add and use _Thread_Get_unmapped_real_priority().
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Add rtems_scheduler_get_processor_maximum() as a replacement for
rtems_get_processor_count(). The rtems_get_processor_count() is a bit
orphaned. Adopt it by the Scheduler Manager. The count is also
misleading, since the processor set may have gaps and the actual count
of online processors may be less than the value returned by
rtems_get_processor_count().
Update #3732.
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The region_information_block typedef as no corresponding API. It has no
proper namespace prefix. A user can do nothing with it.
Close #3591.
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Update #3530.
Update #3533.
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A speciality of the RTEMS build system was the make preinstall step. It
copied header files from arbitrary locations into the build tree. The
header files were included via the -Bsome/build/tree/path GCC command
line option.
This has at least seven problems:
* The make preinstall step itself needs time and disk space.
* Errors in header files show up in the build tree copy. This makes it
hard for editors to open the right file to fix the error.
* There is no clear relationship between source and build tree header
files. This makes an audit of the build process difficult.
* The visibility of all header files in the build tree makes it
difficult to enforce API barriers. For example it is discouraged to
use BSP-specifics in the cpukit.
* An introduction of a new build system is difficult.
* Include paths specified by the -B option are system headers. This
may suppress warnings.
* The parallel build had sporadic failures on some hosts.
This patch removes the make preinstall step. All installed header
files are moved to dedicated include directories in the source tree.
Let @RTEMS_CPU@ be the target architecture, e.g. arm, powerpc, sparc,
etc. Let @RTEMS_BSP_FAMILIY@ be a BSP family base directory, e.g.
erc32, imx, qoriq, etc.
The new cpukit include directories are:
* cpukit/include
* cpukit/score/cpu/@RTEMS_CPU@/include
* cpukit/libnetworking
The new BSP include directories are:
* bsps/include
* bsps/@RTEMS_CPU@/include
* bsps/@RTEMS_CPU@/@RTEMS_BSP_FAMILIY@/include
There are build tree include directories for generated files.
The include directory order favours the most general header file, e.g.
it is not possible to override general header files via the include path
order.
The "bootstrap -p" option was removed. The new "bootstrap -H" option
should be used to regenerate the "headers.am" files.
Update #3254.
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Update #3082.
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Update #2858.
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Replace Thread_Scheduler_control::control and
Thread_Scheduler_control::own_control with new
Thread_Scheduler_control::home.
Update #2556.
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Update #2423.
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Update #2423.
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Add priority nodes which contribute to the overall thread priority.
The actual priority of a thread is now an aggregation of priority nodes.
The thread priority aggregation for the home scheduler instance of a
thread consists of at least one priority node, which is normally the
real priority of the thread. The locking protocols (e.g. priority
ceiling and priority inheritance), rate-monotonic period objects and the
POSIX sporadic server add, change and remove priority nodes.
A thread changes its priority now immediately, e.g. priority changes are
not deferred until the thread releases its last resource.
Replace the _Thread_Change_priority() function with
* _Thread_Priority_perform_actions(),
* _Thread_Priority_add(),
* _Thread_Priority_remove(),
* _Thread_Priority_change(), and
* _Thread_Priority_update().
Update #2412.
Update #2556.
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Avoid direct access to thread internal data fields.
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The RTEMS print user need to know nothing about a particular printer
implementation. In particular get rid of the <stdio.h> include which
would be visible via <rtems.h>.
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Update #2723.
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This change adds rtems_printf and related functions and wraps the
RTEMS print plugin support into a user API. All references to the
plugin are removed and replaced with the rtems_printer interface.
Printk and related functions are made to return a valid number of
characters formatted and output.
The function attribute to check printf functions has been added
to rtems_printf and printk. No changes to remove warrnings are part
of this patch set.
The testsuite has been moved over to the rtems_printer. The testsuite
has a mix of rtems_printer access and direct print control via the
tmacros.h header file. The support for begink/endk has been removed
as it served no purpose and only confused the code base. The testsuite
has not been refactored to use rtems_printf. This is future work.
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In addition protect scheduler of thread by thread state lock. Enables
use of scheduler per-instance locks.
Update #2555.
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The CPU time used of a thread was previously maintained per-processor
mostly during _Thread_Dispatch(). However, on SMP configurations the
actual processor of a thread is difficult to figure out since thread
dispatching is a highly asynchronous process (e.g. via inter-processor
interrupts). Only the intended processor of a thread is known to the
scheduler easily. Do the CPU usage accounting during thread heir
updates in the context of the scheduler operations. Provide the
function _Thread_Get_CPU_time_used() to get the CPU usage of a thread
using proper locks to get a consistent value.
Close #2627.
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This type is superfluous since all operations with it are done via the
_Timestamp_*() functions.
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This avoids potential dead code in _Thread_Handler(). It gets rid of
the dangerous function pointer casts.
Update #2514.
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Drop the <rtems/score/percpu.h> include since this file exposes a lot of
implementation details.
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This was obsolete and broken based upon recent time keeping changes.
Thie build option was previously enabled by adding
USE_TICKS_FOR_STATISTICS=1 to the configure command line.
This propagated into the code as preprocessor conditionals
using the __RTEMS_USE_TICKS_FOR_STATISTICS__ conditional.
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The cpuuse top command now supports the current load where the list of
tasks is ordered based on the current load rather than the total cpu usage.
This lets you see what is using the processor at any specific instance.
The ability to sort on a range of thread values is now supported.
Added memory usage stats for unified and separate workspace and C heaps as
well as displaying the allocated stack space.
Added a few more command keys to refresh the display, show all tasks in the
system, control the lines display and a scrolling mode that does not clear
the display on each refresh.
Removed support for tick kernel builds. The tick support in the kernel is to
be removed.
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The current implementation of task migration in RTEMS has some
implications with respect to the interrupt latency. It is crucial to
preserve the system invariant that a task can execute on at most one
processor in the system at a time. This is accomplished with a boolean
indicator in the task context. The processor architecture specific
low-level task context switch code will mark that a task context is no
longer executing and waits that the heir context stopped execution
before it restores the heir context and resumes execution of the heir
task. So there is one point in time in which a processor is without a
task. This is essential to avoid cyclic dependencies in case multiple
tasks migrate at once. Otherwise some supervising entity is necessary to
prevent life-locks. Such a global supervisor would lead to scalability
problems so this approach is not used. Currently the thread dispatch is
performed with interrupts disabled. So in case the heir task is
currently executing on another processor then this prolongs the time of
disabled interrupts since one processor has to wait for another
processor to make progress.
It is difficult to avoid this issue with the interrupt latency since
interrupts normally store the context of the interrupted task on its
stack. In case a task is marked as not executing we must not use its
task stack to store such an interrupt context. We cannot use the heir
stack before it stopped execution on another processor. So if we enable
interrupts during this transition we have to provide an alternative task
independent stack for this time frame. This issue needs further
investigation.
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Use "cpu" for an arbitrary Per_CPU_Control variable.
Use "cpu_self" for the Per_CPU_Control of the current processor.
Use "cpu_index" for an arbitrary processor index.
Use "cpu_index_self" for the processor index of the current processor.
Use "cpu_count" for the processor count obtained via
_SMP_Get_processor_count().
Use "cpu_max" for the processor maximum obtained by
rtems_configuration_get_maximum_processors().
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Rename rtems_smp_get_processor_count() in rtems_get_processor_count().
Make rtems_get_processor_count() a function in uni-processor
configurations to enable ABI compatibility with SMP configurations.
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Add and use _Per_CPU_Get_by_index() and _Per_CPU_Get_index(). Add
_Per_CPU_Send_interrupt(). This avoids direct access of
_Per_CPU_Information.
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FIXME: This area needs proper locking.
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Delete TOD_MICROSECONDS_PER_SECOND, TOD_MICROSECONDS_TO_TICKS() and
TOD_MILLISECONDS_TO_TICKS().
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Move implementation specific parts of object.h and object.inl into new
header file objectimpl.h. The object.h contains now only the
application visible API.
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Move implementation specific parts of watchdog.h and watchdog.inl into
new header file watchdogimpl.h. The watchdog.h contains now only the
application visible API.
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Rename in rtems_smp_get_processor_count(). Always provide
<rtems/score/smp.h> and <rtems/rtems/smp.h>. Add
_SMP_Get_processor_count(). This function will be a compile time
constant defined to be one on uni-processor configurations. This allows
iterations over all processors without overhead on uni-processor
configurations.
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Conflicts occured durning this patch and modifications in
the repo were favored over the patch.
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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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* cpukit/libmisc/cpuuse/cpuuse.h,
cpukit/libmisc/cpuuse/cpuusagedata.c,
cpukit/libmisc/cpuuse/cpuusagereport.c,
cpukit/libmisc/cpuuse/cpuusagereset.c: Fixed timestamp usage.
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PR 1826/cpukit
* libmisc/cpuuse/cpuusagereport.c, rtems/Makefile.am,
rtems/preinstall.am, rtems/include/rtems.h: Add SMP Helper methods to
Classic API.
* rtems/include/rtems/rtems/smp.h: New file.
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* include/rtems/bspIo.h, include/rtems/concat.h,
include/rtems/endian.h, include/rtems/fs.h, include/rtems/irq.h,
include/rtems/pci.h, include/rtems/userenv.h,
libblock/include/rtems/flashdisk.h,
libblock/include/rtems/nvdisk-sram.h,
libblock/include/rtems/nvdisk.h, libcsupport/include/clockdrv.h,
libcsupport/include/console.h, libcsupport/include/iosupp.h,
libcsupport/include/spurious.h,
libcsupport/include/motorola/mc68230.h,
libcsupport/include/rtems/assoc.h, libcsupport/include/rtems/error.h,
libcsupport/include/rtems/framebuffer.h,
libcsupport/include/rtems/gxx_wrappers.h,
libcsupport/include/rtems/libcsupport.h,
libcsupport/include/rtems/libio_.h,
libcsupport/include/rtems/malloc.h,
libcsupport/include/rtems/termiostypes.h,
libcsupport/include/sys/statvfs.h, libcsupport/include/sys/termios.h,
libcsupport/include/sys/utsname.h, libcsupport/include/zilog/z8036.h,
libcsupport/include/zilog/z8530.h, libcsupport/include/zilog/z8536.h,
libfs/src/imfs/imfs.h, libfs/src/pipe/pipe.h,
libmisc/capture/capture-cli.h, libmisc/capture/capture.h,
libmisc/cpuuse/cpuuse.h, libmisc/devnull/devnull.h,
libmisc/devnull/devzero.h, libmisc/dumpbuf/dumpbuf.h,
libmisc/fb/fb.h, libmisc/fb/mw_uid.h, libmisc/mouse/mouse_parser.h,
libmisc/shell/shellconfig.h, libmisc/stringto/stringto.h,
libmisc/untar/untar.h, libnetworking/memory.h, posix/include/aio.h,
posix/include/mqueue.h, posix/include/semaphore.h,
posix/include/rtems/posix/aio_misc.h,
posix/include/rtems/posix/barrier.h,
posix/include/rtems/posix/cond.h, posix/include/rtems/posix/config.h,
posix/include/rtems/posix/key.h, posix/include/rtems/posix/mqueue.h,
posix/include/rtems/posix/mutex.h,
posix/include/rtems/posix/posixapi.h,
posix/include/rtems/posix/priority.h,
posix/include/rtems/posix/psignal.h,
posix/include/rtems/posix/pthread.h,
posix/include/rtems/posix/ptimer.h,
posix/include/rtems/posix/rwlock.h,
posix/include/rtems/posix/semaphore.h,
posix/include/rtems/posix/sigset.h,
posix/include/rtems/posix/spinlock.h,
posix/include/rtems/posix/threadsup.h,
posix/include/rtems/posix/time.h, posix/include/rtems/posix/timer.h,
posix/inline/rtems/posix/barrier.inl,
posix/inline/rtems/posix/cond.inl,
posix/inline/rtems/posix/mqueue.inl,
posix/inline/rtems/posix/mutex.inl,
posix/inline/rtems/posix/priority.inl,
posix/inline/rtems/posix/pthread.inl,
posix/inline/rtems/posix/rwlock.inl,
posix/inline/rtems/posix/semaphore.inl,
posix/inline/rtems/posix/spinlock.inl,
posix/inline/rtems/posix/timer.inl, rtems/mainpage.h,
rtems/include/rtems/rtems/barrier.h,
rtems/include/rtems/rtems/object.h,
rtems/include/rtems/rtems/timer.h,
rtems/inline/rtems/rtems/barrier.inl,
rtems/inline/rtems/rtems/timer.inl,
rtems/src/semtranslatereturncode.c, sapi/include/rtems/config.h,
sapi/include/rtems/fatal.h, sapi/include/rtems/mptables.h,
score/include/rtems/score/object.h,
score/include/rtems/score/priority.h,
score/inline/rtems/score/object.inl,
score/inline/rtems/score/priority.inl: Add @file Doxygen directives
and descriptions to files which originated with RTEMS. This improves
the file list page generated by Doxygen.
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