diff options
Diffstat (limited to 'cpukit/rtems/include/rtems/rtems/smp.h')
| -rw-r--r-- | cpukit/rtems/include/rtems/rtems/smp.h | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/cpukit/rtems/include/rtems/rtems/smp.h b/cpukit/rtems/include/rtems/rtems/smp.h index d8431b07f1..6e45671b32 100644 --- a/cpukit/rtems/include/rtems/rtems/smp.h +++ b/cpukit/rtems/include/rtems/rtems/smp.h @@ -55,14 +55,25 @@ extern "C" { _SMP_Get_processor_count() /** - * @brief Obtain Current Core Number + * @brief Returns the index of the current processor. * - * This method returns the id of the current CPU core. + * On uni-processor configurations this is a compile time constant and defined + * to be zero. + * + * On SMP configurations an architecture specific method is used to obtain the + * index of the current processor in the system. The set of processor indices + * is the range of integers starting with zero up to the processor count minus + * one. + * + * Outside of sections with disabled thread dispatching the current processor + * index may change after every instruction since the thread may migrate from + * one processor to another. Sections with disabled interrupts are sections + * with thread dispatching disabled. * - * @retval This method returns the id of the current CPU core. + * @return The index of the current processor. */ #define rtems_smp_get_current_processor() \ - bsp_smp_processor_id() + _SMP_Get_current_processor() /** @} */ |