smp: Add maximum_processors field to config

Delete rtems_configuration_get_smp_maximum_processors().  Delete
rtems_configuration_smp_maximum_processors variable.  Add
maximum_processors field to rtems_configuration_table if RTEMS_SMP is
defined.  Add rtems_configuration_get_maximum_processors().

c/src/lib/libbsp/i386/shared/smp/smp-imps.c

@@ -401,7 +401,7 @@ imps_read_config_table(unsigned start, int count)
   while (count-- > 0) {
     switch (*((unsigned char *)start)) {
     case IMPS_BCT_PROCESSOR:
-      if ( imps_num_cpus < rtems_configuration_smp_maximum_processors ) {
+      if ( imps_num_cpus < rtems_configuration_get_maximum_processors() ) {
 	add_processor((imps_processor *)start);
       } else 
         imps_num_cpus++;
@@ -428,13 +428,13 @@ imps_read_config_table(unsigned start, int count)
     }
     start += 8;
   }
-  if ( imps_num_cpus > rtems_configuration_smp_maximum_processors ) {
+  if ( imps_num_cpus > rtems_configuration_get_maximum_processors() ) {
     printk(
       "WARNING!! Found more CPUs (%d) than configured for (%d)!!\n",
       imps_num_cpus - 1,
-      rtems_configuration_smp_maximum_processors
+      rtems_configuration_get_maximum_processors()
     );
-    imps_num_cpus = rtems_configuration_smp_maximum_processors;
+    imps_num_cpus = rtems_configuration_get_maximum_processors();
     return;
   }
 }

c/src/lib/libbsp/sparc/leon3/smp/smp_leon3.c

@@ -71,13 +71,13 @@ int bsp_smp_initialize(
     printk( "Found %d CPUs\n", found_cpus );
   #endif
 
-  if ( found_cpus > rtems_configuration_smp_maximum_processors ) {
+  if ( found_cpus > rtems_configuration_get_maximum_processors() ) {
     printk(
       "%d CPUs IS MORE THAN CONFIGURED -- ONLY USING %d\n",
       found_cpus,
-      rtems_configuration_smp_maximum_processors
+      rtems_configuration_get_maximum_processors()
     );
-    found_cpus = rtems_configuration_smp_maximum_processors;
+    found_cpus = rtems_configuration_get_maximum_processors();
   }
 
   if ( found_cpus == 1 )

cpukit/rtems/include/rtems/rtems/smp.h

@@ -36,8 +36,6 @@ extern "C" {
  */
 /**@{*/
 
-extern uint32_t rtems_configuration_smp_maximum_processors;
-
 /**
  * @brief Obtain Number of Cores in System
  *
@@ -50,18 +48,6 @@ extern uint32_t rtems_configuration_smp_maximum_processors;
 #define rtems_smp_get_number_of_processors() \
     (_SMP_Processor_count)
 
-/**
- * @brief Obtain Maximum Cores Configured
- *
- * This method returns the number of CPU cores that were configured
- * in the system. The actual number of cores will always be less than
- * or equal to the number  of maximum number of cores which were configured.
- *
- * @retval This method returns the number of cores configured.
- */
-#define rtems_configuration_get_smp_maximum_processors() \
-    (rtems_configuration_smp_maximum_processors)
-
 /**
  * @brief Obtain Current Core Number
  *

cpukit/sapi/include/confdefs.h

@@ -2360,22 +2360,15 @@ const rtems_libio_helper rtems_fs_init_helper =
     #if defined(RTEMS_MULTIPROCESSING)
       CONFIGURE_MULTIPROCESSING_TABLE,        /* pointer to MP config table */
     #endif
+    #ifdef RTEMS_SMP
+      CONFIGURE_SMP_MAXIMUM_PROCESSORS
+    #endif
   };
 #endif
 
 #endif /* CONFIGURE_HAS_OWN_CONFIGURATION_TABLE */
 
 #if defined(RTEMS_SMP)
-  /**
-   * Instantiate the variable which specifies the number of CPUs
-   * in an SMP configuration.
-   */
-  #if defined(CONFIGURE_INIT)
-    uint32_t rtems_configuration_smp_maximum_processors = \
-        CONFIGURE_SMP_MAXIMUM_PROCESSORS;
-  #else
-    extern uint32_t rtems_configuration_smp_maximum_processors;
-  #endif
  /*
   * Instantiate the Per CPU information based upon the user configuration.
   */

cpukit/sapi/include/rtems/config.h

@@ -230,6 +230,9 @@ typedef struct {
   #if defined(RTEMS_MULTIPROCESSING)
     rtems_multiprocessing_table   *User_multiprocessing_table;
   #endif
+  #ifdef RTEMS_SMP
+    uint32_t                     maximum_processors;
+  #endif
 } rtems_configuration_table;
 
 /**
@@ -335,6 +338,22 @@ extern const rtems_configuration_table Configuration;
         NULL
 #endif
 
+/**
+ * @brief Returns the configured maximum count of processors.
+ *
+ * The actual number of processors available for the application will be less
+ * than or equal to the configured maximum count of processors.
+ *
+ * @return The configured maximum count of processors.
+ */
+#ifdef RTEMS_SMP
+  #define rtems_configuration_get_maximum_processors() \
+        (Configuration.maximum_processors)
+#else
+  #define rtems_configuration_get_maximum_processors() \
+        1
+#endif
+
 #define rtems_configuration_get_rtems_api_configuration() \
         (&Configuration_RTEMS_API)
 

cpukit/sapi/src/exinit.c

@@ -164,7 +164,7 @@ void rtems_initialize_data_structures(void)
    */
   #if defined(RTEMS_SMP)
     _SMP_Processor_count =
-        bsp_smp_initialize( rtems_configuration_smp_maximum_processors );
+        bsp_smp_initialize( rtems_configuration_get_maximum_processors() );
   #endif
 
   _System_state_Set( SYSTEM_STATE_BEFORE_MULTITASKING );

cpukit/score/include/rtems/bspsmp.h

@@ -48,14 +48,6 @@ extern "C" {
 
 
 #ifndef ASM
-/**
- *  @brief Maximum number of CPUs in SMP system.
- *
- *  This variable is set during the SMP initialization sequence to
- *  indicate the Maximum number of CPUs in this system.
- */
-extern uint32_t rtems_configuration_smp_maximum_processors;
-
 /**
  *  @brief Initialize secondary CPUs.
  *

cpukit/score/src/percpu.c

@@ -46,7 +46,7 @@
      */
     size = rtems_configuration_get_interrupt_stack_size();
     _Per_CPU_Information_p[0] = &_Per_CPU_Information[0];
-    for (cpu=1 ; cpu < rtems_configuration_smp_maximum_processors; cpu++ ) {
+    for (cpu=1 ; cpu < rtems_configuration_get_maximum_processors(); cpu++ ) {
 
       Per_CPU_Control *p = &_Per_CPU_Information[cpu];
 

cpukit/score/src/thread.c

@@ -84,7 +84,7 @@ void _Thread_Handler_initialization(void)
    *  coupled multiprocessing system, account for the MPCI Server Thread.
    */
   #if defined(RTEMS_SMP)
-    maximum_internal_threads = rtems_configuration_smp_maximum_processors;
+    maximum_internal_threads = rtems_configuration_get_maximum_processors();
   #else
     maximum_internal_threads = 1;
   #endif