mp_call.c revision b885580b43755ee4ea1e280b85428893d2ba9291
/*
* 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
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <sys/machsystm.h>
#include <sys/xc_levels.h>
/*
* Interrupt another CPU.
* This is useful to make the other CPU go through a trap so that
* it recognizes an address space trap (AST) for preempting a thread.
*
* It is possible to be preempted here and be resumed on the CPU
* being poked, so it isn't an error to poke the current CPU.
* We could check this and still get preempted after the check, so
* we don't bother.
*/
void
{
if (panicstr)
return;
/*
* We don't need to receive an ACK from the CPU being poked,
* so just send out a directed interrupt.
*/
}
/*
* Call a function on a target CPU
*/
void
{
if (panicstr)
return;
/*
* Prevent CPU from going off-line
*/
/*
* If we are on the target CPU, call the function directly, but raise
* the PIL to XC_PIL.
* This guarantees that functions called via cpu_call() can not ever
* interrupt each other.
*/
} else {
}
}