Reduce indent in single_thread_check_locked() by inverting initial

if () check which just returns.
OK mpi@

diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c
index 54c86f6..52e8571 100644 (file)
--- a/sys/kern/kern_sig.c
+++ b/sys/kern/kern_sig.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: kern_sig.c,v 1.305 2023/02/10 14:34:17 visa Exp $     */
+/*     $OpenBSD: kern_sig.c,v 1.306 2023/04/03 11:57:50 claudio Exp $  */
 /*     $NetBSD: kern_sig.c,v 1.54 1996/04/22 01:38:32 christos Exp $   */
 
 /*
@@ -2018,31 +2018,32 @@ single_thread_check_locked(struct proc *p, int deep, int s)
 
        SCHED_ASSERT_LOCKED();
 
-       if (pr->ps_single != NULL && pr->ps_single != p) {
-               do {
-                       /* if we're in deep, we need to unwind to the edge */
-                       if (deep) {
-                               if (pr->ps_flags & PS_SINGLEUNWIND)
-                                       return (ERESTART);
-                               if (pr->ps_flags & PS_SINGLEEXIT)
-                                       return (EINTR);
-                       }
+       if (pr->ps_single == NULL || pr->ps_single == p)
+               return (0);
 
-                       if (atomic_dec_int_nv(&pr->ps_singlecount) == 0)
-                               wakeup(&pr->ps_singlecount);
+       do {
+               /* if we're in deep, we need to unwind to the edge */
+               if (deep) {
+                       if (pr->ps_flags & PS_SINGLEUNWIND)
+                               return (ERESTART);
+                       if (pr->ps_flags & PS_SINGLEEXIT)
+                               return (EINTR);
+               }
 
-                       if (pr->ps_flags & PS_SINGLEEXIT) {
-                               SCHED_UNLOCK(s);
-                               KERNEL_LOCK();
-                               exit1(p, 0, 0, EXIT_THREAD_NOCHECK);
-                               /* NOTREACHED */
-                       }
+               if (atomic_dec_int_nv(&pr->ps_singlecount) == 0)
+                       wakeup(&pr->ps_singlecount);
 
-                       /* not exiting and don't need to unwind, so suspend */
-                       p->p_stat = SSTOP;
-                       mi_switch();
-               } while (pr->ps_single != NULL);
-       }
+               if (pr->ps_flags & PS_SINGLEEXIT) {
+                       SCHED_UNLOCK(s);
+                       KERNEL_LOCK();
+                       exit1(p, 0, 0, EXIT_THREAD_NOCHECK);
+                       /* NOTREACHED */
+               }
+
+               /* not exiting and don't need to unwind, so suspend */
+               p->p_stat = SSTOP;
+               mi_switch();
+       } while (pr->ps_single != NULL);
 
        return (0);
 }