/*
* 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.
*/
/*
* Start 4 tasks with affinity for each of the 4 cpus.
* Allow tasks to set their actual cpu value and delete themselves.
* Verify the actual cpu values match the expected cpu values.
*
* Init task is at a lower priority 8 and the threads
* with affinity are at priority 4, so the affinity task
* on the core init is running on will preempt it.
*
* Test tasks run and delete themselves.
* Init task never blocks.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define TEST_INIT
#include <rtems.h>
#include "tmacros.h"
const char rtems_test_name[] = "SMPSCHEDAFFINITY 1";
#define NUM_CPUS 4
#define TASK_COUNT 5
struct task_data_t {
rtems_id id;
int expected_cpu;
cpu_set_t cpuset;
bool ran;
int actual_cpu;
};
static struct task_data_t task_data[NUM_CPUS] = {
{0x0, 2, {{0x4}}, false, -1},
{0x0, 0, {{0x1}}, false, -1},
{0x0, 3, {{0x8}}, false, -1},
{0x0, 1, {{0x2}}, false, -1}
};
/*
* Spin loop to allow tasks to delay without yeilding the
* processor.
*/
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 task(rtems_task_argument arg)
{
uint32_t cpu;
cpu_set_t cpuset;
cpu = rtems_get_current_processor();
rtems_task_get_affinity( rtems_task_self(), sizeof(cpuset), &cpuset );
task_data[arg].ran = true;
task_data[arg].actual_cpu = cpu;
rtems_task_delete( RTEMS_SELF );
}
static void test(void)
{
rtems_status_code sc;
rtems_task_argument i;
size_t size;
uint32_t cpu_count;
/* Get the number of processors that we are using. */
cpu_count = rtems_get_processor_count();
size = sizeof(cpu_set_t);
/* Create and start tasks on each cpu with the appropriate affinity. */
for (i = 0; i < NUM_CPUS; i++) {
/* Skip if this cpu doesn't exist, don't create task */
if ( task_data[i].expected_cpu >= cpu_count ) {
printf( "Skipping TA0%d because on a core we do not have\n", i );
continue;
}
sc = rtems_task_create(
rtems_build_name('T', 'A', '0', '0'+i),
4,
RTEMS_MINIMUM_STACK_SIZE,
RTEMS_DEFAULT_MODES,
RTEMS_DEFAULT_ATTRIBUTES,
&task_data[ i ].id
);
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
printf("Set TA%d affinity to cpu %d\n", i, task_data[i].expected_cpu );
sc = rtems_task_set_affinity( task_data[ i ].id, size, &task_data[i].cpuset );
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
printf("Start TA%d on cpu %d\n", i, task_data[i].expected_cpu);
sc = rtems_task_start( task_data[ i ].id, task, i );
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
}
/* spin for 100 ticks */
test_delay(100);
printf("Verify Tasks Ran\n");
for (i = 0; i < NUM_CPUS; i++) {
/* Skip if this cpu doesn't exist, task doesn't exist */
if ( task_data[i].expected_cpu >= cpu_count ) {
printf( "Skipping TA0%d because on a core we do not have\n", i );
continue;
}
/* print the expected and actual values */
printf( "TA0%d: ran=%d expected=%d actual=%d\n",
i,
task_data[i].ran,
task_data[i].expected_cpu,
task_data[i].actual_cpu
);
/* Abort test if values are not as expected */
rtems_test_assert( task_data[i].ran == true );
rtems_test_assert( task_data[i].expected_cpu == task_data[i].actual_cpu );
}
}
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>
