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rtems_name is a four byte integer.
Giving an rtems_name as value instead of a pointer to ctrace_task_name_add()
fixes not only the compiler warning but it is also a bit more safe
For those who have asked for the warning:
../../../cpukit/libmisc/capture/capture_support.c:352:49: warning:
taking address of packed member of 'struct rtems_capture_task_record'
may result in an unaligned pointer value [-Waddress-of-packed-member]
352 | ctrace_task_name_add (rec_out->task_id, &task_rec.name);
| ^~~~~~~~~~~~~~
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Provide the default trace data in a separate file to avoid issues on targets
with a small-data area.
Close #3883.
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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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Add rtems_scheduler_get_processor() as a replacement for
rtems_get_current_processor(). The rtems_get_current_processor() is a
bit orphaned. Adopt it by the Scheduler Manager. This is in line with
the glibc sched_getcpu() function.
Deprecate rtems_get_current_processor().
Update #3731.
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This makes the @file documentation independent of the actual file name.
Update #3707.
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LLVM warns about this:
cpukit/libmisc/capture/capture.c:405:30: warning:
taking address of packed member 'time' of class or structure
'rtems_capture_record' may result in an unaligned pointer value
[-Waddress-of-packed-member]
rtems_capture_get_time (&in.time);
And on sparc it generates an unaligned trap which makes smpcapture01
and smpcapture02 test to fail on sparc.
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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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Prepare for header file move to common include directory.
Update #3254.
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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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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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Move the 64-bit field to a not 64-bit aligned structure offset to stop
the compiler from generating 64-bit load/store operations.
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This patches some issues with the capture engine:
1. Check is the engine is open in ctrace commands.
2. Check all record open and appends for overflow.
3. Fix the record open to take the size of user data and
not the record header.
4. Use packed structs for data being written to the per
cpu buffers.
5. Remove direct struct access to the capture buffers to
avoid misaligned accesses.
6. Add support to extract records, no struct access to the
capture buffers.
7. Update ctrace to extract records from the capture buffers.
8. Add support to ctrace to always print the task name if it
has one.
9. Add support to manage names or the lack of a name.
10. Range of minor fixes.
11. Fix a long standing bug in ctset's handling of args.
Closes #2780.
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Use same structure as POSIX API for thread priority conversion to/from
SuperCore.
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Get the current processor index only once and with interrupts disabled.
Close #2707.
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Order fields according to alignment to reduce structure internal
padding.
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Do not use function static variables. Remove superfluous volatile
qualifiers. Use proper integer types.
Close #2706.
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The rtrace command interfaces to the RTEMS Trace Linker's trace
buffering data allowing users to capture and report trace data.
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The printing of 64bit diff's for the timestamp did not work on ARM
so I have changed this to 32bit. A 32bit nano-second diff between
events should be more than enough time.
Print '____' for POSIX thread output.
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These were remnants of pre-Doxygen comment style.
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To support smp data was broken into global and percpu capture data.
Capture control must be disabled prior to printing or setting of
watch points.
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Methods to print the data were moved from capture-cli into
a support area and are no longer static so that they can
be shared by test routines, or application code that wants
to use the capture engine without the shell interface.
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The catpture task record is now logged just prior to the first
log entry using that task instead of the first time the task
is seen. This involved splitting the record task method into
an initialize task and a record task.
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rtems_cpu_usage_top should be used for this information.
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This patch removes functionality for stack checking from
the capture engine and requiresi the use of existing rtems
functions for this information. It modifies ctload to use
functionality similar to rtems cpuusage. It removes the
capture task and stores a new capture task record the first
time the task is seen. The per task data that was still
needed is scaled down and stored in the tcb.
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Doxygen added and comment blocks standardized.
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The function to change a thread priority was too complex. Simplify it
with a new scheduler operation. This increases the average case
performance due to the simplified logic. The interrupt disabled
critical section is a bit prolonged since now the extract, update and
enqueue steps are executed atomically. This should however not impact
the worst-case interrupt latency since at least for the Deterministic
Priority Scheduler this sequence can be carried out with a wee bit of
instructions and no loops.
Add _Scheduler_Change_priority() to replace the sequence of
- _Thread_Set_transient(),
- _Scheduler_Extract(),
- _Scheduler_Enqueue(), and
- _Scheduler_Enqueue_first().
Delete STATES_TRANSIENT, _States_Is_transient() and
_Thread_Set_transient() since this state is now superfluous.
With this change it is possible to get rid of the
SCHEDULER_SMP_NODE_IN_THE_AIR state. This considerably simplifies the
implementation of the new SMP locking protocols.
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Print the uptime and difference in nanoseconds to the previous
record in the ctrace output. For example:
0:00:59.474927121 14760 0a01000c TNTD 235 235 CREATED_BY
0:00:59.474927418 297 0a010012 /dev 235 235 CREATED
0:00:59.474930799 3381 0a01000c TNTD 235 235 STARTED_BY
0:00:59.474931105 306 0a010012 /dev 235 235 STARTED
0:00:59.475072297 141192 0a01000c TNTD 235 235 SWITCHED_OUT
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Use the new API to get the uptime in nanoseconds and update the capture
engine.
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The capture did not work due to changes in the workspace allocator.
The engine now scans all existing tasks when enabled and does any
allocations then.
Fixed a bug in the ctset commandi in the CLI.
Updated the capture engine to use 64bit nanosec timestamps.
Fixed the CLI showing the stack usage.
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Move implementation specific parts of states.h and states.inl into new
header file statesimpl.h. The states.h contains now only the
application visible API.
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