Prep for 0.2.1 tag

Minor fixes to headers to use debug macros
Added /proc/sys/spl/version



git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@90 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c

modules/spl/spl-generic.c

@@ -13,6 +13,8 @@
 
 #define DEBUG_SUBSYSTEM S_GENERIC
 
+char spl_version[16] = "SPL v" VERSION;
+
 long spl_hostid = 0;
 EXPORT_SYMBOL(spl_hostid);
 

modules/spl/spl-proc.c

@@ -20,7 +20,8 @@ static unsigned long table_max = ~0;
 
 #define CTL_SPL 0x87
 enum {
-        CTL_DEBUG_SUBSYS = 1,     /* Debug subsystem */
+	CTL_VERSION = 1,          /* Version */
+        CTL_DEBUG_SUBSYS,         /* Debug subsystem */
         CTL_DEBUG_MASK,           /* Debug mask */
         CTL_DEBUG_PRINTK,         /* Force all messages to console */
         CTL_DEBUG_MB,             /* Debug buffer size */
@@ -371,6 +372,14 @@ static struct ctl_table spl_table[] = {
         /* NB No .strategy entries have been provided since
          * sysctl(8) prefers to go via /proc for portability.
          */
+        {
+                .ctl_name = CTL_VERSION,
+                .procname = "version",
+                .data     = spl_version,
+                .maxlen   = sizeof(spl_version),
+                .mode     = 0444,
+                .proc_handler = &proc_dostring,
+        },
         {
                 .ctl_name = CTL_DEBUG_SUBSYS,
                 .procname = "debug_subsystem",