Close #3507. --- c-user/symmetric_multiprocessing_services.rst | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/c-user/symmetric_multiprocessing_services.rst b/c-user/symmetric_multiprocessing_services.rst index 638292b..4204d3f 100644 --- a/c-user/symmetric_multiprocessing_services.rst +++ b/c-user/symmetric_multiprocessing_services.rst @@ -791,3 +791,21 @@ from the executing to the heir thread neither the stack of the executing nor the heir thread must be used during interrupt processing. For this purpose a temporary per-processor stack is set up which may be used by the interrupt prologue before the stack is switched to the interrupt stack. + +Per-Processor Data +------------------ + +RTMES provides two means for per-processor data: + +1. Per-processor data which used by RTEMS itself is contained in the + `Per_CPU_Control` structure. The application configuration via + `<rtems/confdefs.h>` creates a table of these structures + (`_Per_CPU_Information[]`). The table is dimensioned according to the count + of configured processors + (:ref:`CONFIGURE_MAXIMUM_PROCESSORS <CONFIGURE_MAXIMUM_PROCESSORS>`). + +2. For low level support libraries an API for statically allocated + per-processor data is available via + `<rtems/score/percpudata.h> <https://git.rtems.org/rtems/tree/cpukit/include/rtems/score/percpudata.h>`_. + This API is not intended for general application use. Please ask on the + development mailing list in case you want to use it. -- 2.13.7 _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
