diff options
Diffstat (limited to 'usr/src/uts/intel/sys/mutex_impl.h')
| -rw-r--r-- | usr/src/uts/intel/sys/mutex_impl.h | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/usr/src/uts/intel/sys/mutex_impl.h b/usr/src/uts/intel/sys/mutex_impl.h index bcab84a979..c8cff15c2a 100644 --- a/usr/src/uts/intel/sys/mutex_impl.h +++ b/usr/src/uts/intel/sys/mutex_impl.h @@ -2,9 +2,8 @@ * CDDL HEADER START * * The contents of this file are subject to the terms of the - * Common Development and Distribution License, Version 1.0 only - * (the "License"). You may not use this file except in compliance - * with the License. + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. @@ -20,7 +19,7 @@ * CDDL HEADER END */ /* - * Copyright 2004 Sun Microsystems, Inc. All rights reserved. + * Copyright 2008 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ @@ -98,8 +97,31 @@ typedef union mutex_impl { #define MUTEX_DESTROY(lp) \ (lp)->m_owner = ((uintptr_t)curthread | MUTEX_DEAD) +/* mutex backoff delay macro and constants */ +#define MUTEX_BACKOFF_BASE 1 +#define MUTEX_BACKOFF_SHIFT 2 +#define MUTEX_CAP_FACTOR 64 +#define MUTEX_DELAY() { \ + mutex_delay(); \ + SMT_PAUSE(); \ + } + +/* low overhead clock read */ +#define MUTEX_GETTICK() tsc_read() +extern void null_xcall(void); +#define MUTEX_SYNC() { \ + cpuset_t set; \ + CPUSET_ALL(set); \ + xc_call(0, 0, 0, X_CALL_HIPRI, set, \ + (xc_func_t)null_xcall); \ + } extern int mutex_adaptive_tryenter(mutex_impl_t *); +extern void *mutex_owner_running(mutex_impl_t *); + +#else /* _ASM */ + +#define MUTEX_THREAD -0x8 #endif /* _ASM */ |