Module Name: src
Committed By: ad
Date: Sun Jan 12 13:15:08 UTC 2020
Modified Files:
src/sys/kern: kern_lwp.c
Log Message:
Remove some unneeded kernel_lock handling.
To generate a diff of this commit:
cvs rdiff -u -r1.218 -r1.219 src/sys/kern/kern_lwp.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/kern/kern_lwp.c
diff -u src/sys/kern/kern_lwp.c:1.218 src/sys/kern/kern_lwp.c:1.219
--- src/sys/kern/kern_lwp.c:1.218 Wed Jan 8 17:38:42 2020
+++ src/sys/kern/kern_lwp.c Sun Jan 12 13:15:08 2020
@@ -1,4 +1,4 @@
-/* $NetBSD: kern_lwp.c,v 1.218 2020/01/08 17:38:42 ad Exp $ */
+/* $NetBSD: kern_lwp.c,v 1.219 2020/01/12 13:15:08 ad Exp $ */
/*-
* Copyright (c) 2001, 2006, 2007, 2008, 2009, 2019 The NetBSD Foundation, Inc.
@@ -209,7 +209,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_lwp.c,v 1.218 2020/01/08 17:38:42 ad Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_lwp.c,v 1.219 2020/01/12 13:15:08 ad Exp $");
#include "opt_ddb.h"
#include "opt_lockdebug.h"
@@ -1266,14 +1266,8 @@ lwp_free(struct lwp *l, bool recycle, bo
* the target CPU.
*/
membar_enter();
- if ((l->l_flag & LW_RUNNING) != 0) {
- int count;
- (void)count; /* XXXgcc */
- KERNEL_UNLOCK_ALL(curlwp, &count);
- while ((l->l_flag & LW_RUNNING) != 0 ||
- l->l_cpu->ci_curlwp == l)
- SPINLOCK_BACKOFF_HOOK;
- KERNEL_LOCK(count, curlwp);
+ while (__predict_false((l->l_flag & LW_RUNNING) != 0)) {
+ SPINLOCK_BACKOFF_HOOK;
}
#endif
