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/*
* COPYRIGHT (c) 2014.
* On-Line Applications Research Corporation (OAR).
*
* 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.
*/
/*
* Test to walk the affinity of the init task across all the cores.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define TEST_INIT
#include <rtems.h>
#include "tmacros.h"
const char rtems_test_name[] = "SMPSCHEDAFFINITY 3";
#define NUM_CPUS 4
#define TASK_COUNT NUM_CPUS
static void test_delay(int ticks)
{
rtems_interval start, stop;
start = rtems_clock_get_ticks_since_boot();
do {
stop = rtems_clock_get_ticks_since_boot();
} while ( (stop - start) < ticks );
}
static void test(void)
{
rtems_status_code sc;
rtems_id id;
uint32_t cpu_count;
int cpu;
int i;
cpu_set_t cpuset;
/* Get the number of processors that we are using. */
cpu_count = rtems_get_processor_count();
id = rtems_task_self();
/*
* The Init task comes up on the maximum core so start at
* that core and walk the affinity down to core 0.
*/
for( i=cpu_count-1; i >= 0; i--) {
/* Move the affinity to the current core - 1 */
CPU_ZERO(&cpuset);
CPU_SET(i, &cpuset);
printf("Set Affinity for cpu %d\n", i);
sc = rtems_task_set_affinity( id, sizeof(cpuset), &cpuset );
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
/* Wait 100 clock ticks */
test_delay(100);
/* Check the cpu the Init task is running on */
cpu = rtems_get_current_processor();
printf("On cpu %d\n", cpu);
rtems_test_assert(cpu == i);
}
}
static void Init(rtems_task_argument arg)
{
TEST_BEGIN();
test();
TEST_END();
rtems_test_exit(0);
}
#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
#define CONFIGURE_SCHEDULER_PRIORITY_AFFINITY_SMP
#define CONFIGURE_MAXIMUM_PROCESSORS NUM_CPUS
#define CONFIGURE_MAXIMUM_TASKS TASK_COUNT
#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
#define CONFIGURE_INIT_TASK_PRIORITY 8
#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
#define CONFIGURE_INIT
#include <rtems/confdefs.h>
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