shell: Add CPUINFO command

Update #2723.

cpukit/libmisc/Makefile.am

@@ -30,6 +30,7 @@ EXTRA_DIST += cpuuse/README
 noinst_LIBRARIES += libcpuuse.a
 libcpuuse_a_SOURCES = cpuuse/cpuusagereport.c cpuuse/cpuusagereset.c \
      cpuuse/cpuuse.h cpuuse/cpuusagedata.c cpuuse/cpuusagetop.c
+libcpuuse_a_SOURCES += cpuuse/cpuinforeport.c
 
 ## devnull
 noinst_LIBRARIES += libdevnull.a
@@ -114,6 +115,7 @@ libshell_a_SOURCES = shell/cat_file.c shell/cmds.c shell/internal.h \
 libshell_a_SOURCES += shell/main_cmdls.c
 libshell_a_SOURCES += shell/main_cmdchown.c
 libshell_a_SOURCES += shell/main_cmdchmod.c
+libshell_a_SOURCES += shell/main_cpuinfo.c
 libshell_a_SOURCES += shell/main_profreport.c
 
 if LIBDRVMGR

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;
+}

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

cpukit/libmisc/shell/main_cpuinfo.c

@@ -0,0 +1,38 @@
+/*
+ * 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/shell.h>
+#include <rtems/shellconfig.h>
+#include <rtems/cpuuse.h>
+
+static int rtems_shell_main_cpuinfo(int argc, char **argv)
+{
+  rtems_printer printer;
+
+  rtems_print_printer_fprintf(&printer, stdout);
+  rtems_cpu_info_report(&printer);
+
+  return 0;
+}
+
+rtems_shell_cmd_t rtems_shell_CPUINFO_Command = {
+  .name = "cpuinfo",
+  .usage = "cpuinfo",
+  .topic = "rtems",
+  .command = rtems_shell_main_cpuinfo
+};

cpukit/libmisc/shell/shellconfig.h

@@ -80,6 +80,7 @@ extern rtems_shell_cmd_t rtems_shell_MD5_Command;
 extern rtems_shell_cmd_t rtems_shell_RTC_Command;
 
 extern rtems_shell_cmd_t rtems_shell_SHUTDOWN_Command;
+extern rtems_shell_cmd_t rtems_shell_CPUINFO_Command;
 extern rtems_shell_cmd_t rtems_shell_CPUUSE_Command;
 extern rtems_shell_cmd_t rtems_shell_TOP_Command;
 extern rtems_shell_cmd_t rtems_shell_STACKUSE_Command;
@@ -430,6 +431,11 @@ extern rtems_shell_alias_t * const rtems_shell_Initial_aliases[];
         defined(CONFIGURE_SHELL_COMMAND_SHUTDOWN)
       &rtems_shell_SHUTDOWN_Command,
     #endif
+    #if (defined(CONFIGURE_SHELL_COMMANDS_ALL) && \
+         !defined(CONFIGURE_SHELL_NO_COMMAND_CPUINFO)) || \
+        defined(CONFIGURE_SHELL_COMMAND_CPUINFO)
+      &rtems_shell_CPUINFO_Command,
+    #endif
     #if (defined(CONFIGURE_SHELL_COMMANDS_ALL) && \
          !defined(CONFIGURE_SHELL_NO_COMMAND_CPUUSE)) || \
         defined(CONFIGURE_SHELL_COMMAND_CPUUSE)