diff options
Diffstat (limited to 'cpukit/score/src/smpmulticastaction.c')
-rw-r--r-- | cpukit/score/src/smpmulticastaction.c | 141 |
1 files changed, 4 insertions, 137 deletions
diff --git a/cpukit/score/src/smpmulticastaction.c b/cpukit/score/src/smpmulticastaction.c index 55c495a2cf..4eec04c50d 100644 --- a/cpukit/score/src/smpmulticastaction.c +++ b/cpukit/score/src/smpmulticastaction.c @@ -3,16 +3,14 @@ /** * @file * - * @ingroup RTEMSScorePerCPU * @ingroup RTEMSScoreSMP * - * @brief This source file contains the implementation of _Per_CPU_Add_job(), - * _Per_CPU_Perform_jobs(), _Per_CPU_Wait_for_job(), _SMP_Broadcast_action(), - * _SMP_Multicast_action(), _SMP_Othercast_action(), and _SMP_Synchronize(). + * @brief This source file contains the implementation of + * _SMP_Multicast_action(). */ /* - * Copyright (C) 2019 embedded brains GmbH + * Copyright (C) 2019 embedded brains GmbH & Co. KG * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -43,106 +41,6 @@ #include <rtems/score/smpimpl.h> #include <rtems/score/assert.h> -#define _Per_CPU_Jobs_ISR_disable_and_acquire( cpu, lock_context ) \ - _ISR_lock_ISR_disable_and_acquire( &( cpu )->Jobs.Lock, lock_context ) - -#define _Per_CPU_Jobs_release_and_ISR_enable( cpu, lock_context ) \ - _ISR_lock_Release_and_ISR_enable( &( cpu )->Jobs.Lock, lock_context ) - -void _Per_CPU_Perform_jobs( Per_CPU_Control *cpu ) -{ - ISR_lock_Context lock_context; - Per_CPU_Job *job; - - _Per_CPU_Jobs_ISR_disable_and_acquire( cpu, &lock_context ); - job = cpu->Jobs.head; - cpu->Jobs.head = NULL; - _Per_CPU_Jobs_release_and_ISR_enable( cpu, &lock_context ); - - while ( job != NULL ) { - const Per_CPU_Job_context *context; - Per_CPU_Job *next; - - context = job->context; - next = job->next; - ( *context->handler )( context->arg ); - _Atomic_Store_ulong( &job->done, PER_CPU_JOB_DONE, ATOMIC_ORDER_RELEASE ); - - job = next; - } -} - -void _Per_CPU_Add_job( Per_CPU_Control *cpu, Per_CPU_Job *job ) -{ - ISR_lock_Context lock_context; - - _Atomic_Store_ulong( &job->done, 0, ATOMIC_ORDER_RELAXED ); - _Assert( job->next == NULL ); - - _Per_CPU_Jobs_ISR_disable_and_acquire( cpu, &lock_context ); - - if ( cpu->Jobs.head == NULL ) { - cpu->Jobs.head = job; - } else { - *cpu->Jobs.tail = job; - } - - cpu->Jobs.tail = &job->next; - - _Per_CPU_Jobs_release_and_ISR_enable( cpu, &lock_context ); -} - -static void _Per_CPU_Try_perform_jobs( Per_CPU_Control *cpu_self ) -{ - unsigned long message; - - message = _Atomic_Load_ulong( &cpu_self->message, ATOMIC_ORDER_RELAXED ); - - if ( ( message & SMP_MESSAGE_PERFORM_JOBS ) != 0 ) { - bool success; - - success = _Atomic_Compare_exchange_ulong( - &cpu_self->message, &message, - message & ~SMP_MESSAGE_PERFORM_JOBS, ATOMIC_ORDER_RELAXED, - ATOMIC_ORDER_RELAXED - ); - - if ( success ) { - _Per_CPU_Perform_jobs( cpu_self ); - } - } -} - -void _Per_CPU_Wait_for_job( - const Per_CPU_Control *cpu, - const Per_CPU_Job *job -) -{ - while ( - _Atomic_Load_ulong( &job->done, ATOMIC_ORDER_ACQUIRE ) - != PER_CPU_JOB_DONE - ) { - switch ( cpu->state ) { - case PER_CPU_STATE_INITIAL: - case PER_CPU_STATE_READY_TO_START_MULTITASKING: - case PER_CPU_STATE_REQUEST_START_MULTITASKING: - _CPU_SMP_Processor_event_broadcast(); - /* Fall through */ - case PER_CPU_STATE_UP: - /* - * Calling this function with the current processor is intentional. - * We have to perform our own jobs here in case inter-processor - * interrupts are not working. - */ - _Per_CPU_Try_perform_jobs( _Per_CPU_Get() ); - break; - default: - _SMP_Fatal( SMP_FATAL_WRONG_CPU_STATE_TO_PERFORM_JOBS ); - break; - } - } -} - typedef struct { Per_CPU_Job_context Context; Per_CPU_Job Jobs[ CPU_MAXIMUM_PROCESSORS ]; @@ -165,8 +63,7 @@ static void _SMP_Issue_action_jobs( job->context = &jobs->Context; cpu = _Per_CPU_Get_by_index( cpu_index ); - _Per_CPU_Add_job( cpu, job ); - _SMP_Send_message( cpu_index, SMP_MESSAGE_PERFORM_JOBS ); + _Per_CPU_Submit_job( cpu, job ); } } } @@ -209,33 +106,3 @@ void _SMP_Multicast_action( _SMP_Issue_action_jobs( targets, &jobs, cpu_max ); _SMP_Wait_for_action_jobs( targets, &jobs, cpu_max ); } - -void _SMP_Broadcast_action( - SMP_Action_handler handler, - void *arg -) -{ - _SMP_Multicast_action( _SMP_Get_online_processors(), handler, arg ); -} - -void _SMP_Othercast_action( - SMP_Action_handler handler, - void *arg -) -{ - Processor_mask targets; - - _Processor_mask_Assign( &targets, _SMP_Get_online_processors() ); - _Processor_mask_Clear( &targets, _SMP_Get_current_processor() ); - _SMP_Multicast_action( &targets, handler, arg ); -} - -static void _SMP_Do_nothing_action( void *arg ) -{ - /* Do nothing */ -} - -void _SMP_Synchronize( void ) -{ - _SMP_Othercast_action( _SMP_Do_nothing_action, NULL ); -} |