[src/trunk]: src/sys/kern Fix build break.

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

details:   https://anonhg.NetBSD.org/src/rev/14cd9713067c
branches:  trunk
changeset: 967466:14cd9713067c
user:      ad <ad%NetBSD.org@localhost>
date:      Tue Dec 10 11:12:02 2019 +0000

description:
Fix build break.

diffstat:

 sys/kern/kern_mutex.c |  16 +++++++++++-----
 1 files changed, 11 insertions(+), 5 deletions(-)

diffs (47 lines):

diff -r 2937c7cf08bd -r 14cd9713067c sys/kern/kern_mutex.c
--- a/sys/kern/kern_mutex.c     Tue Dec 10 09:18:37 2019 +0000
+++ b/sys/kern/kern_mutex.c     Tue Dec 10 11:12:02 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: kern_mutex.c,v 1.81 2019/12/09 21:05:23 ad Exp $       */
+/*     $NetBSD: kern_mutex.c,v 1.82 2019/12/10 11:12:02 ad Exp $       */
 
 /*-
  * Copyright (c) 2002, 2006, 2007, 2008, 2019 The NetBSD Foundation, Inc.
@@ -40,7 +40,7 @@
 #define        __MUTEX_PRIVATE
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_mutex.c,v 1.81 2019/12/09 21:05:23 ad Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_mutex.c,v 1.82 2019/12/10 11:12:02 ad Exp $");
 
 #include <sys/param.h>
 #include <sys/atomic.h>
@@ -823,19 +823,25 @@
 /*
  * mutex_owner_running:
  *
- *     Return true if an adaptive mutex is held and the owner is running
- *     on a CPU.  For the pagedaemon.
+ *     Return true if an adaptive mutex is unheld, or held and the owner is
+ *     running on a CPU.  For the pagedaemon.
  */
 bool
 mutex_owner_running(const kmutex_t *mtx)
 {
+#ifdef MULTIPROCESSOR
+       uintptr_t owner;
        bool rv;
 
        MUTEX_ASSERT(mtx, MUTEX_ADAPTIVE_P(mtx));
        kpreempt_disable();
-       rv = mutex_oncpu(MUTEX_OWNER(mtx->mtx_owner));
+       owner = mtx->mtx_owner;
+       rv = (MUTEX_OWNED(owner) && mutex_oncpu(MUTEX_OWNER(owner));
        kpreempt_enable();
        return rv;
+#else
+       return mutex_owner(mtx) == curlwp;
+#endif
 }
 
 /*