diff options
Diffstat (limited to 'cpukit/include/rtems/score/thread.h')
| -rw-r--r-- | cpukit/include/rtems/score/thread.h | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/cpukit/include/rtems/score/thread.h b/cpukit/include/rtems/score/thread.h index 4c8a97c0f7..23ed8e1406 100644 --- a/cpukit/include/rtems/score/thread.h +++ b/cpukit/include/rtems/score/thread.h @@ -306,10 +306,24 @@ typedef struct { Chain_Control Scheduler_nodes; /** - * @brief Node for the Per_CPU_Control::Threads_in_need_for_help chain. + * @brief If an ask for help request for the thread is pending, then this + * member references the processor on which the ask for help request is + * registered, otherwise it is NULL. * - * This chain is protected by the Per_CPU_Control::Lock lock of the assigned - * processor. + * Depending on the state of the thread and usage context, this member is + * protected by the Per_CPU_Control::Lock lock of the referenced processor, + * the scheduler lock of the thread (Thread_Scheduler_control::Lock), or the + * thread state lock. + */ + struct Per_CPU_Control *ask_for_help_cpu; + + /** + * @brief This member is the node for the + * Per_CPU_Control::Threads_in_need_for_help chain. + * + * This chain is protected by the Per_CPU_Control::Lock lock of the processor + * on which the ask for help request is registered + * (Thread_Scheduler_control::ask_for_help_cpu). */ Chain_Node Help_node; |