Author: markj
Date: Sun Apr 17 23:22:32 2016
New Revision: 298173
URL: https://svnweb.freebsd.org/changeset/base/298173

Log:
  Use a loop instead of a goto in sysctl_kern_proc_kstack().
  
  MFC after:    3 days

Modified:
  head/sys/kern/kern_proc.c

Modified: head/sys/kern/kern_proc.c
==============================================================================
--- head/sys/kern/kern_proc.c   Sun Apr 17 23:10:09 2016        (r298172)
+++ head/sys/kern/kern_proc.c   Sun Apr 17 23:22:32 2016        (r298173)
@@ -2534,10 +2534,8 @@ sysctl_kern_proc_kstack(SYSCTL_HANDLER_A
        st = stack_create();
 
        lwpidarray = NULL;
-       numthreads = 0;
        PROC_LOCK(p);
-repeat:
-       if (numthreads < p->p_numthreads) {
+       do {
                if (lwpidarray != NULL) {
                        free(lwpidarray, M_TEMP);
                        lwpidarray = NULL;
@@ -2547,9 +2545,7 @@ repeat:
                lwpidarray = malloc(sizeof(*lwpidarray) * numthreads, M_TEMP,
                    M_WAITOK | M_ZERO);
                PROC_LOCK(p);
-               goto repeat;
-       }
-       i = 0;
+       } while (numthreads < p->p_numthreads);
 
        /*
         * XXXRW: During the below loop, execve(2) and countless other sorts
@@ -2560,6 +2556,7 @@ repeat:
         * have changed, in which case the right to extract debug info might
         * no longer be assured.
         */
+       i = 0;
        FOREACH_THREAD_IN_PROC(p, td) {
                KASSERT(i < numthreads,
                    ("sysctl_kern_proc_kstack: numthreads"));
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