diff options
Diffstat (limited to 'cpukit/score/src/coremutexseize.c')
-rw-r--r-- | cpukit/score/src/coremutexseize.c | 33 |
1 files changed, 15 insertions, 18 deletions
diff --git a/cpukit/score/src/coremutexseize.c b/cpukit/score/src/coremutexseize.c index 596378fda6..ed5eb0aeec 100644 --- a/cpukit/score/src/coremutexseize.c +++ b/cpukit/score/src/coremutexseize.c @@ -29,6 +29,8 @@ Status_Control _CORE_mutex_Seize_interrupt_blocking( Thread_queue_Context *queue_context ) { + Thread_Control *holder; + #if !defined(RTEMS_SMP) /* * We must disable thread dispatching here since we enable the interrupts for @@ -37,32 +39,27 @@ Status_Control _CORE_mutex_Seize_interrupt_blocking( _Thread_Dispatch_disable(); #endif - if ( _CORE_mutex_Is_inherit_priority( &the_mutex->Attributes ) ) { - Thread_Control *holder = the_mutex->holder; + holder = the_mutex->holder; #if !defined(RTEMS_SMP) - /* - * To enable interrupts here works only since exactly one executing thread - * exists and only threads are allowed to seize and surrender mutexes with - * the priority inheritance protocol. On SMP configurations more than one - * executing thread may exist, so here we must not release the lock, since - * otherwise the current holder may be no longer the holder of the mutex - * once we released the lock. - */ - _CORE_mutex_Release( the_mutex, queue_context ); + /* + * To enable interrupts here works only since exactly one executing thread + * exists and only threads are allowed to seize and surrender mutexes with + * the priority inheritance protocol. On SMP configurations more than one + * executing thread may exist, so here we must not release the lock, since + * otherwise the current holder may be no longer the holder of the mutex + * once we released the lock. + */ + _CORE_mutex_Release( the_mutex, queue_context ); #endif - _Thread_Inherit_priority( holder, executing ); - -#if !defined(RTEMS_SMP) - _ISR_lock_ISR_disable( &queue_context->Lock_context ); - _CORE_mutex_Acquire_critical( the_mutex, queue_context ); -#endif - } + _Thread_Inherit_priority( holder, executing ); #if defined(RTEMS_SMP) _Thread_queue_Context_set_expected_level( queue_context, 1 ); #else + _ISR_lock_ISR_disable( &queue_context->Lock_context ); + _CORE_mutex_Acquire_critical( the_mutex, queue_context ); _Thread_queue_Context_set_expected_level( queue_context, 2 ); #endif |