From 300f6a481aaf9e6d29811faca71bf7104a01492c Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Wed, 22 Jun 2016 17:09:23 +0200 Subject: score: Rework thread priority management 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. --- cpukit/score/src/scheduleredfchangepriority.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) (limited to 'cpukit/score/src/scheduleredfchangepriority.c') diff --git a/cpukit/score/src/scheduleredfchangepriority.c b/cpukit/score/src/scheduleredfchangepriority.c index 9a73128e4c..8940b1d54b 100644 --- a/cpukit/score/src/scheduleredfchangepriority.c +++ b/cpukit/score/src/scheduleredfchangepriority.c @@ -54,16 +54,12 @@ Scheduler_Void_or_thread _Scheduler_EDF_Update_priority( node = _Scheduler_EDF_Thread_get_node( the_thread ); priority = _Scheduler_Node_get_priority( &node->Base, &prepend_it ); - if ( priority == node->current_priority ) { + if ( priority == node->priority ) { /* Nothing to do */ SCHEDULER_RETURN_VOID_OR_NULL; } - if ( ( priority & SCHEDULER_EDF_PRIO_MSB ) != 0 ) { - node->background_priority = priority; - } - - node->current_priority = priority; + node->priority = priority; context = _Scheduler_EDF_Get_context( scheduler ); _Scheduler_EDF_Extract( context, node ); -- cgit v1.2.3