/*
* Copyright (C) 2005 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @file ipi.c
* @brief Generic IPI interface.
*/
#ifdef CONFIG_SMP
#include <smp/ipi.h>
#include <config.h>
/** Broadcast IPI message
*
* Broadcast IPI message to all CPUs.
*
* @param ipi Message to broadcast.
*
* @bug The decision whether to actually send the IPI must be based
* on a different criterion. The current version has
* problems when some of the detected CPUs are marked
* disabled in machine configuration.
*/
void ipi_broadcast(int ipi)
{
/*
* Provisions must be made to avoid sending IPI:
* - before all CPU's were configured to accept the IPI
* - if there is only one CPU but the kernel was compiled with CONFIG_SMP
*/
if ((config.cpu_active > 1) && (config.cpu_active == config.cpu_count))
ipi_broadcast_arch(ipi);
}
#endif /* CONFIG_SMP */