mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 00:48:50 +00:00
45 lines
1 KiB
C
45 lines
1 KiB
C
|
/*
|
||
|
|
* Author: Kumar Gala <galak@kernel.crashing.org>
|
||
|
|
*
|
||
|
|
* Copyright 2009 Freescale Semiconductor Inc.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify it
|
||
|
|
* under the terms of the GNU General Public License as published by the
|
||
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
||
|
|
* option) any later version.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/stddef.h>
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/smp.h>
|
||
|
|
#include <linux/threads.h>
|
||
|
|
|
||
|
|
#include <asm/dbell.h>
|
||
|
|
|
||
|
|
#ifdef CONFIG_SMP
|
||
|
|
unsigned long dbell_smp_message[NR_CPUS];
|
||
|
|
|
||
|
|
void smp_dbell_message_pass(int target, int msg)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
|
||
|
|
if(target < NR_CPUS) {
|
||
|
|
set_bit(msg, &dbell_smp_message[target]);
|
||
|
|
ppc_msgsnd(PPC_DBELL, 0, target);
|
||
|
|
}
|
||
|
|
else if(target == MSG_ALL_BUT_SELF) {
|
||
|
|
for_each_online_cpu(i) {
|
||
|
|
if (i == smp_processor_id())
|
||
|
|
continue;
|
||
|
|
set_bit(msg, &dbell_smp_message[i]);
|
||
|
|
ppc_msgsnd(PPC_DBELL, 0, i);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else { /* target == MSG_ALL */
|
||
|
|
for_each_online_cpu(i)
|
||
|
|
set_bit(msg, &dbell_smp_message[i]);
|
||
|
|
ppc_msgsnd(PPC_DBELL, PPC_DBELL_MSG_BRDCAST, 0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|