/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* 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
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
*/
.file "smt_pause.s"
#include <sys/asm_linkage.h>
#include <../assym.h>
/*
* void smt_pause(void)
*
* Do nothing efficiently.
* We do the dance with the lwpid so that the actual address is spread
* across cache banks thus avoiding hot spots.
* Casx arguments are a no-op, but they force access to L2 cache, which
* takes lots of cycles.
*/
#ifdef lint
void
smt_pause(void)
{
}
#else
#endif