Hi,
I'm having some issues with running an RTEMS application configured with more
than 1 CPU. I'm using RTEMS5 checked out from Nov 8 (git hash
b3c624d8886db6e791babe5e0d4f8b28992e000a).
What I've done is currently modified the sample Hello World application, based
off of smp01, to print out the number of processors RTEMS detects with the
rtems_get_processor_count() method. Initially this method reported 1 which made
sense since I didn't have CONFIGURE_MAXIMUM_PROCESSORS defined.
After setting #define CONFIGURE_MAXIMUM_PROCESSORS to 2 what I see is that I no
longer get any serial output from the program. I'm not quite sure what's going
on.
The entirety of my program is as follows (also attached to this email):
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems.h>
#include <tmacros.h>
const char rtems_test_name[] = "HELLO WORLD";
static rtems_task Init(
rtems_task_argument ignored
)
{
rtems_print_printer_fprintf_putc(&rtems_test_printer);
TEST_BEGIN();
#ifdef RTEMS_SMP
printf("SMP SUPPORT ENABLED\n");
#else
printf("NO SMP SUPPORT ENABLED\n");
#endif
printf( "Hello Windows RTEMS SMP\n" );
uint32_t cpu_count = rtems_get_processor_count();
printf("CPU Count is %d\n", cpu_count);
TEST_END();
rtems_test_exit( 0 );
}
#define CONFIGURE_INIT
/* NOTICE: the clock driver is explicitly disabled */
#define CONFIGURE_APPLICATION_DOES_NOT_NEED_CLOCK_DRIVER
#define CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER
#define CONFIGURE_MAXIMUM_PROCESSORS 2
#define CONFIGURE_MAXIMUM_TASKS (CONFIGURE_MAXIMUM_PROCESSORS + 1)
#define CONFIGURE_MAXIMUM_SEMAPHORES 1
#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
#define CONFIGURE_INIT_TASK_ATTRIBUTES RTEMS_FLOATING_POINT
#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
#define CONFIUGRE_SCHEDULER_PRIORITY_AFFINITY_SMP
#include <rtems/confdefs.h>
The output when I have CONFIGURE_MAXIMUM_PROCESSORS to 1 can be seen the
screenshot below (also attached to this thread).
[cid:[email protected]]
Any idea what might be going on here or if there's something that I'm doing
incorrectly?
Thanks,
Avi
/*
* COPYRIGHT (c) 1989-2012.
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems.h>
#include <tmacros.h>
const char rtems_test_name[] = "HELLO WORLD";
static rtems_task Init(
rtems_task_argument ignored
)
{
rtems_print_printer_fprintf_putc(&rtems_test_printer);
TEST_BEGIN();
#ifdef RTEMS_SMP
printf("SMP SUPPORT ENABLED\n");
#else
printf("NO SMP SUPPORT ENABLED\n");
#endif
printf( "Hello Windows RTEMS SMP\n" );
uint32_t cpu_count = rtems_get_processor_count();
printf("CPU Count is %d\n", cpu_count);
TEST_END();
rtems_test_exit( 0 );
}
#define CONFIGURE_INIT
/* NOTICE: the clock driver is explicitly disabled */
#define CONFIGURE_APPLICATION_DOES_NOT_NEED_CLOCK_DRIVER
#define CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER
#define CONFIGURE_MAXIMUM_PROCESSORS 2
#define CONFIGURE_MAXIMUM_TASKS (CONFIGURE_MAXIMUM_PROCESSORS + 1)
#define CONFIGURE_MAXIMUM_SEMAPHORES 1
#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
#define CONFIGURE_INIT_TASK_ATTRIBUTES RTEMS_FLOATING_POINT
#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
#define CONFIUGRE_SCHEDULER_PRIORITY_AFFINITY_SMP
#include <rtems/confdefs.h>
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