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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 designed for 2 cores: Init task and TA1 task.
* of equal priorities.
*
* - Set TA1 affinity to core 0 verify
* - Set TA1 affinity to core 1 verify it does not run because
* the Init task never blocks
* - Set Init affinity to core 0 verify both tasks are on the correct cores.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems.h>
#include "tmacros.h"
const char rtems_test_name[] = "SMPSCHEDAFFINITY 2";
#define NUM_CPUS 2
struct task_data_t {
rtems_id id;
int expected_cpu;
cpu_set_t cpuset;
bool ran;
int actual_cpu;
};
struct task_data_t task_data = {
0x0, 0, {{0x3}}, false, -1
};
rtems_id task_sem;
static void task(rtems_task_argument arg);
static void task_verify( bool ran, bool change_affinity, int cpu );
static void init_verify( int expect );
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_verify( bool ran, bool change_affinity, int cpu )
{
rtems_status_code sc;
size_t size = sizeof(cpu_set_t);
/* Obtain the semaphore without blocking */
while( rtems_semaphore_obtain (task_sem, RTEMS_NO_WAIT, 0) != RTEMS_SUCCESSFUL );
/* print the expected and actual values */
printf( "TA01: expected=%d actual=%d ran=%d\n",
task_data.expected_cpu,
task_data.actual_cpu,
task_data.ran
);
/* Verify expected results */
rtems_test_assert( task_data.ran == ran );
if (ran)
rtems_test_assert( task_data.expected_cpu == task_data.actual_cpu );
if (change_affinity) {
printf("Set TA01 to cpu %d\n", cpu);
CPU_ZERO(&task_data.cpuset);
CPU_SET(cpu, &task_data.cpuset);
sc = rtems_task_set_affinity( task_data.id, size, &task_data.cpuset );
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
}
/* Reset the states */
task_data.ran = false;
task_data.expected_cpu = cpu;
/* Release the semaphore */
rtems_semaphore_release(task_sem);
}
static void init_verify( int expect )
{
int cpu;
test_delay(20);
cpu = rtems_get_current_processor();
printf( "Init: expected=%d actual=%d\n", expect, cpu);
rtems_test_assert( expect == cpu );
}
static void task(rtems_task_argument arg)
{
rtems_status_code sc;
/* Never block and continually get core id */
while (true) {
sc = rtems_semaphore_obtain (task_sem, RTEMS_NO_WAIT, 0);
if (sc == RTEMS_SUCCESSFUL) {
task_data.actual_cpu = rtems_get_current_processor();
task_data.ran = true;
test_delay(25);
rtems_semaphore_release(task_sem);
}
}
}
static void test(void)
{
rtems_status_code sc;
uint32_t cpu_count;
rtems_id id_self;
cpu_set_t cpuset;
/* Get the number of processors that we are using. */
cpu_count = rtems_get_processor_count();
if (cpu_count < NUM_CPUS) {
printf("Error: Test requires at least 2 cpus\n");
return;
}
id_self = rtems_task_self();
printf("Create Semaphore\n");
sc = rtems_semaphore_create(
rtems_build_name('S', 'E', 'M', '0'),
1,
RTEMS_BINARY_SEMAPHORE |
RTEMS_PRIORITY |
RTEMS_PRIORITY_CEILING,
0,
&task_sem
);
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
printf("Create TA1\n");
sc = rtems_task_create(
rtems_build_name('T', 'A', '0', '1'),
4,
RTEMS_MINIMUM_STACK_SIZE,
RTEMS_DEFAULT_MODES,
RTEMS_DEFAULT_ATTRIBUTES,
&task_data.id
);
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
/* TA1 should start on cpu 0, since init starts on core 1 */
sc = rtems_task_start( task_data.id, task, 1 );
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
/* Verify Init task is on cpu 1 */
init_verify(1);
/* Verify TA1 on cpu 0 and set the affinity to cpu 0 */
task_verify( true, true, 0 );
/* Verify Init task is on cpu 1 */
init_verify(1);
/* Verify TA1 on cpu 0 and change the affinity to cpu 1 */
task_verify( true, true, 1 );
/* Verify Init task is on cpu 1 */
init_verify(1);
/* Verify TA1 did not run */
task_verify( false, false, 1 );
/* Set affinity of Init to cpu 0 */
printf("Set Affinity of init task to cpu 0\n");
CPU_ZERO(&cpuset);
CPU_SET(0, &cpuset);
sc = rtems_task_set_affinity( id_self, sizeof(cpuset), &cpuset );
rtems_test_assert(sc == RTEMS_SUCCESSFUL);
/* Verify init task went to cpu 0 */
test_delay(50);
init_verify(0);
/* Verfiy TA1 is now running on cpu 1 */
task_verify(true, false, 1);
}
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 NUM_CPUS
#define CONFIGURE_INIT_TASK_PRIORITY 4
#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
#define CONFIGURE_INIT
#include <rtems/confdefs.h>
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