forked from Imagelibrary/rtems
c5831a3f9a
Clustered/partitioned scheduling helps to control the worst-case latencies in the system. The goal is to reduce the amount of shared state in the system and thus prevention of lock contention. Modern multi-processor systems tend to have several layers of data and instruction caches. With clustered/partitioned scheduling it is possible to honour the cache topology of a system and thus avoid expensive cache synchronization traffic. We have clustered scheduling in case the set of processors of a system is partitioned into non-empty pairwise-disjoint subsets. These subsets are called clusters. Clusters with a cardinality of one are partitions. Each cluster is owned by exactly one scheduler instance.
82 lines
1.8 KiB
C
82 lines
1.8 KiB
C
/*
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* Copyright (c) 2014 embedded brains GmbH. All rights reserved.
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*
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* embedded brains GmbH
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* Dornierstr. 4
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* 82178 Puchheim
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* Germany
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* <rtems@embedded-brains.de>
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <rtems.h>
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#include <rtems/test.h>
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#include <rtems/score/smpimpl.h>
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#include <assert.h>
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#include <stdlib.h>
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const char rtems_test_name[] = "SMPFATAL 6";
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static void Init(rtems_task_argument arg)
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{
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assert(0);
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}
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static void fatal_extension(
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rtems_fatal_source source,
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bool is_internal,
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rtems_fatal_code code
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)
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{
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rtems_test_begink();
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if (
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source == RTEMS_FATAL_SOURCE_SMP
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&& !is_internal
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&& code == SMP_FATAL_SCHEDULER_WITHOUT_PROCESSORS
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) {
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rtems_test_endk();
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}
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}
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#define CONFIGURE_APPLICATION_DOES_NOT_NEED_CLOCK_DRIVER
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#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
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#define CONFIGURE_INITIAL_EXTENSIONS \
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{ .fatal = fatal_extension }, \
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RTEMS_TEST_INITIAL_EXTENSION
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#define CONFIGURE_SMP_APPLICATION
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#define CONFIGURE_SMP_MAXIMUM_PROCESSORS 1
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#define CONFIGURE_SCHEDULER_SIMPLE_SMP
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#include <rtems/scheduler.h>
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RTEMS_SCHEDULER_CONTEXT_SIMPLE_SMP(a);
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RTEMS_SCHEDULER_CONTEXT_SIMPLE_SMP(b);
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#define CONFIGURE_SCHEDULER_CONTROLS \
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RTEMS_SCHEDULER_CONTROL_SIMPLE_SMP(a, rtems_build_name('S', 'I', 'M', 'P')), \
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RTEMS_SCHEDULER_CONTROL_SIMPLE_SMP(b, rtems_build_name('S', 'I', 'M', 'P'))
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#define CONFIGURE_SMP_SCHEDULER_ASSIGNMENTS \
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RTEMS_SCHEDULER_ASSIGN(0, RTEMS_SCHEDULER_ASSIGN_PROCESSOR_MANDATORY)
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#define CONFIGURE_MAXIMUM_TASKS 1
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#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
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#define CONFIGURE_INIT
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#include <rtems/confdefs.h>
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