libblock: Add block device statistics

1 files changed, 52 insertions, 0 deletions

diff --git a/cpukit/libblock/src/blkdev-print-stats.c b/cpukit/libblock/src/blkdev-print-stats.c
new file mode 100644
index 0000000000..8cebeaf812
--- /dev/null
+++ b/cpukit/libblock/src/blkdev-print-stats.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2012 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Obere Lagerstr. 30
+ *  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.com/license/LICENSE.
+ */
+
+#if HAVE_CONFIG_H
+  #include "config.h"
+#endif
+
+#include <rtems/blkdev.h>
+
+#include <inttypes.h>
+
+void rtems_blkdev_print_stats(
+  const rtems_blkdev_stats *stats,
+  rtems_printk_plugin_t print,
+  void *print_arg
+)
+{
+  (*print)(
+     print_arg,
+     "-------------------------------------------------------------------------------\n"
+     "                               DEVICE STATISTICS\n"
+     "----------------------+--------------------------------------------------------\n"
+     " READ HITS            | %" PRIu32 "\n"
+     " READ MISSES          | %" PRIu32 "\n"
+     " READ AHEAD TRANSFERS | %" PRIu32 "\n"
+     " READ BLOCKS          | %" PRIu32 "\n"
+     " READ ERRORS          | %" PRIu32 "\n"
+     " WRITE TRANSFERS      | %" PRIu32 "\n"
+     " WRITE BLOCKS         | %" PRIu32 "\n"
+     " WRITE ERRORS         | %" PRIu32 "\n"
+     "----------------------+--------------------------------------------------------\n",
+     stats->read_hits,
+     stats->read_misses,
+     stats->read_ahead_transfers,
+     stats->read_blocks,
+     stats->read_errors,
+     stats->write_transfers,
+     stats->write_blocks,
+     stats->write_errors
+  );
+}