Remove CONFIGURE_SMP_APPLICATION

Enable the SMP support if CONFIGURE_SMP_MAXIMUM_PROCESSORS > 1.

Update #2893.

2 files changed, 18 insertions, 28 deletions

diff --git a/cpukit/sapi/include/confdefs.h b/cpukit/sapi/include/confdefs.h
index e00d079554..c931fda50f 100644
--- a/cpukit/sapi/include/confdefs.h
+++ b/cpukit/sapi/include/confdefs.h
@@ -206,19 +206,20 @@ extern rtems_initialization_tasks_table Initialization_tasks[];
   extern int rtems_telnetd_maximum_ptys;
 #endif
 
-#if defined(RTEMS_SMP)
-  /*
-   *  If configured for SMP, then we need to know the maximum CPU cores.
-   */
-  #if !defined(CONFIGURE_SMP_APPLICATION)
-    #if !defined(CONFIGURE_SMP_MAXIMUM_PROCESSORS)
-      #define CONFIGURE_SMP_MAXIMUM_PROCESSORS 1
-    #endif
-  #else
-    #if !defined(CONFIGURE_SMP_MAXIMUM_PROCESSORS)
-      #error "CONFIGURE_SMP_MAXIMUM_PROCESSORS not specified for SMP Application"
-    #endif
-  #endif
+#ifndef CONFIGURE_SMP_MAXIMUM_PROCESSORS
+  #define CONFIGURE_SMP_MAXIMUM_PROCESSORS 1
+#endif
+
+/*
+ * An internal define to indicate that this is an SMP application
+ * configuration.
+ */
+#if CONFIGURE_SMP_MAXIMUM_PROCESSORS > 1
+  #define _CONFIGURE_SMP_APPLICATION
+#endif
+
+#ifdef CONFIGURE_SMP_APPLICATION
+  #warning "CONFIGURE_SMP_APPLICATION is obsolete since RTEMS 4.12"
 #endif
 
 /*
@@ -797,7 +798,7 @@ extern rtems_initialization_tasks_table Initialization_tasks[];
     !defined(CONFIGURE_SCHEDULER_SIMPLE_SMP) && \
     !defined(CONFIGURE_SCHEDULER_EDF) && \
     !defined(CONFIGURE_SCHEDULER_CBS)
-  #if defined(RTEMS_SMP) && defined(CONFIGURE_SMP_APPLICATION)
+  #ifdef _CONFIGURE_SMP_APPLICATION
     /**
      * If no scheduler is specified in an SMP configuration, the
      * priority scheduler is default.
@@ -1499,7 +1500,7 @@ extern rtems_initialization_tasks_table Initialization_tasks[];
  * used to specify the initial execution mode of the single Classic API task.
  */
 #ifndef CONFIGURE_INIT_TASK_INITIAL_MODES
-  #if defined(RTEMS_SMP) && defined(CONFIGURE_SMP_APPLICATION)
+  #ifdef _CONFIGURE_SMP_APPLICATION
     #define CONFIGURE_INIT_TASK_INITIAL_MODES RTEMS_DEFAULT_MODES
   #else
     #define CONFIGURE_INIT_TASK_INITIAL_MODES RTEMS_NO_PREEMPT
@@ -3416,13 +3417,6 @@ extern rtems_initialization_tasks_table Initialization_tasks[];
     #else
       false,
     #endif
-    #ifdef RTEMS_SMP
-      #ifdef CONFIGURE_SMP_APPLICATION
-        true,
-      #else
-        false,
-      #endif
-    #endif
     CONFIGURE_NUMBER_OF_INITIAL_EXTENSIONS,   /* number of static extensions */
     CONFIGURE_INITIAL_EXTENSION_TABLE,        /* pointer to static extensions */
     #if defined(RTEMS_MULTIPROCESSING)
diff --git a/cpukit/sapi/include/rtems/config.h b/cpukit/sapi/include/rtems/config.h
index 1b48ea92de..ddcb77cc87 100644
--- a/cpukit/sapi/include/rtems/config.h
+++ b/cpukit/sapi/include/rtems/config.h
@@ -237,10 +237,6 @@ typedef struct {
    */
   bool                           stack_allocator_avoids_work_space;
 
-  #ifdef RTEMS_SMP
-    bool                         smp_enabled;
-  #endif
-
   uint32_t                       number_of_initial_extensions;
   const rtems_extensions_table  *User_extension_table;
   #if defined(RTEMS_MULTIPROCESSING)
@@ -356,7 +352,7 @@ extern const rtems_configuration_table Configuration;
  * @brief Returns true if the SMP mode of operation is enabled, and false
  * otherwise.
  *
- * On single-processor configurations this is a compile time constant which
+ * In uni-processor configurations this is a compile-time constant which
  * evaluates to false.
  *
  * @retval true SMP mode of operation is enabled.
@@ -364,7 +360,7 @@ extern const rtems_configuration_table Configuration;
  */
 #ifdef RTEMS_SMP
   #define rtems_configuration_is_smp_enabled() \
-        (Configuration.smp_enabled)
+        (rtems_configuration_get_maximum_processors() > 1)
 #else
   #define rtems_configuration_is_smp_enabled() \
         false