shell: Add CPUINFO command

Update #2723.

2 files changed, 93 insertions, 0 deletions

diff --git a/cpukit/libmisc/cpuuse/cpuinforeport.c b/cpukit/libmisc/cpuuse/cpuinforeport.c
new file mode 100644
index 0000000000..389a26c174
--- /dev/null
+++ b/cpukit/libmisc/cpuuse/cpuinforeport.c
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2016 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * 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.
+ */
+
+#if HAVE_CONFIG_H
+  #include "config.h"
+#endif
+
+#include <rtems/cpuuse.h>
+#include <rtems/print.h>
+
+#include <ctype.h>
+#include <inttypes.h>
+
+#include <rtems/score/schedulerimpl.h>
+
+static char bits_to_char( uint8_t bits )
+{
+  return isprint( bits ) ? (char) bits : '?';
+}
+
+static void name_to_str( uint32_t name, char str[ 5 ] )
+{
+  str[ 0 ] = bits_to_char( (uint8_t) ( name >> 24 ) );
+  str[ 1 ] = bits_to_char( (uint8_t) ( name >> 16 ) );
+  str[ 2 ] = bits_to_char( (uint8_t) ( name >> 8 ) );
+  str[ 3 ] = bits_to_char( (uint8_t) ( name >> 0 ) );
+  str[ 4 ] = '\0';
+}
+
+int rtems_cpu_info_report( const rtems_printer *printer )
+{
+  uint32_t cpu_max;
+  uint32_t cpu_index;
+  int      n;
+
+  cpu_max = rtems_configuration_get_maximum_processors();
+
+  n = rtems_printf(
+    printer,
+     "-------------------------------------------------------------------------------\n"
+     "                            PER PROCESSOR INFORMATION\n"
+     "-------+--------+--------------+-----------------------------------------------\n"
+     " INDEX | ONLINE | SCHEDULER ID | SCHEDULER NAME\n"
+     "-------+--------+--------------+-----------------------------------------------\n"
+   );
+
+  for ( cpu_index = 0; cpu_index < cpu_max; ++cpu_index ) {
+    const Per_CPU_Control *cpu;
+    const Scheduler_Control *scheduler;
+    char scheduler_str[ 5 ];
+    uint32_t scheduler_id;
+
+    cpu = _Per_CPU_Get_by_index( cpu_index );
+    scheduler = _Scheduler_Get_by_CPU( cpu );
+
+    if ( scheduler != NULL ) {
+      scheduler_id = _Scheduler_Build_id( _Scheduler_Get_index( scheduler ) );
+      name_to_str( scheduler->name, scheduler_str );
+    } else {
+      scheduler_id = 0;
+      scheduler_str[ 0 ] = '\0';
+    }
+
+    n += rtems_printf(
+      printer,
+      " %5" PRIu32 " | %6i |   0x%08" PRIx32 " | %s\n",
+      cpu_index,
+      _Per_CPU_Is_processor_online( cpu ),
+      scheduler_id,
+      &scheduler_str[ 0 ]
+    );
+  }
+
+  return n;
+}
diff --git a/cpukit/libmisc/cpuuse/cpuuse.h b/cpukit/libmisc/cpuuse/cpuuse.h
index 55777186f8..23f58faf1b 100644
--- a/cpukit/libmisc/cpuuse/cpuuse.h
+++ b/cpukit/libmisc/cpuuse/cpuuse.h
@@ -73,6 +73,13 @@ void rtems_cpu_usage_top( void );
 
 void rtems_cpu_usage_reset( void );
 
+/**
+ * @brief Reports per-processor information.
+ *
+ * @return The number of characters printed.
+ */
+int rtems_cpu_info_report( const rtems_printer *printer );
+
 #ifdef __cplusplus
 }
 #endif