From c5831a3f9af11228dbdaabaf01f69d37e55684ef Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Wed, 9 Apr 2014 15:07:54 +0200 Subject: score: Add clustered/partitioned scheduling 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. --- testsuites/smptests/smpfatal07/init.c | 75 +++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 testsuites/smptests/smpfatal07/init.c (limited to 'testsuites/smptests/smpfatal07/init.c') diff --git a/testsuites/smptests/smpfatal07/init.c b/testsuites/smptests/smpfatal07/init.c new file mode 100644 index 0000000000..126274209d --- /dev/null +++ b/testsuites/smptests/smpfatal07/init.c @@ -0,0 +1,75 @@ +/* + * Copyright (c) 2014 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Dornierstr. 4 + * 82178 Puchheim + * Germany + * + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#ifdef HAVE_CONFIG_H + #include "config.h" +#endif + +#include +#include +#include +#include + +#include +#include + +const char rtems_test_name[] = "SMPFATAL 7"; + +static void Init(rtems_task_argument arg) +{ + Per_CPU_Control *cpu_self; + + _Thread_Disable_dispatch(); + cpu_self = _Per_CPU_Get(); + cpu_self->started = false; + _SMP_Start_multitasking_on_secondary_processor(); + + assert(0); +} + +static void fatal_extension( + rtems_fatal_source source, + bool is_internal, + rtems_fatal_code code +) +{ + rtems_test_begink(); + + if ( + source == RTEMS_FATAL_SOURCE_SMP + && !is_internal + && code == SMP_FATAL_MULTITASKING_START_ON_UNASSIGNED_PROCESSOR + ) { + rtems_test_endk(); + } +} + +#define CONFIGURE_APPLICATION_DOES_NOT_NEED_CLOCK_DRIVER +#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER + +#define CONFIGURE_INITIAL_EXTENSIONS \ + { .fatal = fatal_extension }, \ + RTEMS_TEST_INITIAL_EXTENSION + +#define CONFIGURE_SMP_APPLICATION + +#define CONFIGURE_SMP_MAXIMUM_PROCESSORS 1 + +#define CONFIGURE_MAXIMUM_TASKS 1 + +#define CONFIGURE_RTEMS_INIT_TASKS_TABLE + +#define CONFIGURE_INIT + +#include -- cgit v1.2.3