/* * 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 * or http://www.opensolaris.org/os/licensing. * 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 2007 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #pragma ident "%Z%%M% %I% %E% SMI" #include <sys/types.h> #include <sys/param.h> #include <sys/thread.h> #include <sys/cpuvar.h> #include <sys/machsystm.h> #include <sys/systm.h> #include <sys/promif.h> #include <sys/x_call.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 poke_cpu(int cpun) { if (panicstr) return; /* * We don't need to receive an ACK from the CPU being poked, * so just send out a directed interrupt. */ XC_TRACE(TT_XC_POKE_CPU, -1, cpun); send_dirint(cpun, XC_CPUPOKE_PIL); }