[src/trunk]: src/sys/kern Expunge the panicstr checks, we don't need them.

[ad <ad%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/2faca3fa66c7
branches:  trunk
changeset: 847093:2faca3fa66c7
user:      ad <ad%NetBSD.org@localhost>
date:      Mon Dec 09 21:02:10 2019 +0000

description:
Expunge the panicstr checks, we don't need them.

diffstat:

 sys/kern/kern_rwlock.c |  17 ++---------------
 1 files changed, 2 insertions(+), 15 deletions(-)

diffs (66 lines):

diff -r d395f9a25020 -r 2faca3fa66c7 sys/kern/kern_rwlock.c
--- a/sys/kern/kern_rwlock.c    Mon Dec 09 21:00:48 2019 +0000
+++ b/sys/kern/kern_rwlock.c    Mon Dec 09 21:02:10 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: kern_rwlock.c,v 1.58 2019/11/30 14:21:16 ad Exp $      */
+/*     $NetBSD: kern_rwlock.c,v 1.59 2019/12/09 21:02:10 ad Exp $      */
 
 /*-
  * Copyright (c) 2002, 2006, 2007, 2008, 2009, 2019 The NetBSD Foundation, Inc.
@@ -38,7 +38,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_rwlock.c,v 1.58 2019/11/30 14:21:16 ad Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_rwlock.c,v 1.59 2019/12/09 21:02:10 ad Exp $");
 
 #define        __RWLOCK_PRIVATE
 
@@ -357,10 +357,6 @@
                        owner = next;
                        continue;
                }
-               if (__predict_false(panicstr != NULL)) {
-                       KPREEMPT_ENABLE(curlwp);
-                       return;
-               }
                if (__predict_false(RW_OWNER(rw) == curthread)) {
                        rw_abort(__func__, __LINE__, rw,
                            "locking against myself");
@@ -450,9 +446,6 @@
        curthread = (uintptr_t)curlwp;
        RW_ASSERT(rw, curthread != 0);
 
-       if (__predict_false(panicstr != NULL))
-               return;
-
        /*
         * Again, we use a trick.  Since we used an add operation to
         * set the required lock bits, we can use a subtract to clear
@@ -729,8 +722,6 @@
 {
        uintptr_t owner;
 
-       if (panicstr != NULL)
-               return 1;
        if (rw == NULL)
                return 0;
        owner = rw->rw_owner;
@@ -748,8 +739,6 @@
 rw_write_held(krwlock_t *rw)
 {
 
-       if (panicstr != NULL)
-               return 1;
        if (rw == NULL)
                return 0;
        return (rw->rw_owner & (RW_WRITE_LOCKED | RW_THREAD)) ==
@@ -767,8 +756,6 @@
 rw_lock_held(krwlock_t *rw)
 {
 
-       if (panicstr != NULL)
-               return 1;
        if (rw == NULL)
                return 0;
        return (rw->rw_owner & RW_THREAD) != 0;