8115 parallel zfs mount

*** 9,31 ****
--- 9,34 ----
   * http://www.illumos.org/license/CDDL.
   */
  
  /*
   * Copyright 2014 Nexenta Systems, Inc.  All rights reserved.
+  * Copyright 2017 RackTop Systems.
   */
  
  #include <sys/types.h>
  #include <sys/time.h>
  #include <sys/thread.h>
  #include <sys/proc.h>
  #include <sys/zone.h>
+ #include <sys/cyclic.h>
  
  #include <sys/poll.h>
  
  #include <time.h>
  #include <stdlib.h>
  #include <unistd.h>
+ #include <errno.h>
  
  #include <fakekernel.h>
  
  pri_t minclsyspri = 60;
  
*** 53,76 ****
--- 56,150 ----
  ddi_get_pid(void)
  {
          return ((pid_t)getpid());
  }
  
+ /*
+  * Find highest one bit set.
+  *      Returns bit number + 1 of highest bit that is set, otherwise returns 0.
+  */
  int
+ highbit64(uint64_t i)
+ {
+         int h = 1;
+ 
+         if (i == 0)
+                 return (0);
+         if (i & 0xffffffff00000000ULL) {
+                 h += 32; i >>= 32;
+         }
+         if (i & 0xffff0000) {
+                 h += 16; i >>= 16;
+         }
+         if (i & 0xff00) {
+                 h += 8; i >>= 8;
+         }
+         if (i & 0xf0) {
+                 h += 4; i >>= 4;
+         }
+         if (i & 0xc) {
+                 h += 2; i >>= 2;
+         }
+         if (i & 0x2) {
+                 h += 1;
+         }
+         return (h);
+ }
+ 
+ int
  ddi_strtoul(const char *str, char **endp, int base, unsigned long *res)
  {
          *res = strtoul(str, endp, base);
+         if (*res == 0)
+                 return (errno);
          return (0);
  }
  
+ int
+ ddi_strtoull(const char *str, char **nptr, int base, u_longlong_t *res)
+ {
+         char *end;
+ 
+         *res = strtoull(str, &end, base);
+         if (*res == 0)
+                 return (errno);
+         return (0);
+ }
+ 
  void
  delay(clock_t ticks)
  {
          int msec = ticks;  /* NB: hz==1000 */
          (void) poll(0, 0, msec);
  }
  
+ int
+ issig(int why)
+ {
+         return (0);
+ }
+ 
+ /* ARGSUSED */
+ cyclic_id_t
+ cyclic_add(cyc_handler_t *hdlr, cyc_time_t *when)
+ {
+         return (1);
+ }
+ 
+ /* ARGSUSED */
+ void
+ cyclic_remove(cyclic_id_t id)
+ {
+ }
+ 
+ /* ARGSUSED */
+ int
+ cyclic_reprogram(cyclic_id_t id, hrtime_t expiration)
+ {
+         return (1);
+ }
+ 
  /*
   * This library does not really need an "init" function, but
   * providing one the main program can call is an easy way to
   * make sure this library is loaded into the debugger, and
   * gives us a way to avoid elfcheck complaints in the build.