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sh: smp: Provide a generic IPI handler. 

This provides a generic smp_message_recv() routine (based on the PPC
one), that IPI IRQs can wrap in to.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2008-08-06 18:02:48 +09:00
parent 04ec080dca
commit 173a44dd1f
2 changed files with 20 additions and 1 deletions
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1
arch/sh/include/asm/smp.h
View File

@ -26,6 +26,7 @@ extern int __cpu_logical_map[NR_CPUS];
#define SMP_MSG_FUNCTION_SINGLE 2 #define SMP_MSG_FUNCTION_SINGLE 2
#define SMP_MSG_NR 3 #define SMP_MSG_NR 3
void smp_message_recv(unsigned int msg);
void plat_smp_setup(void); void plat_smp_setup(void);
void plat_prepare_cpus(unsigned int max_cpus); void plat_prepare_cpus(unsigned int max_cpus);
int plat_smp_processor_id(void); int plat_smp_processor_id(void);

20
arch/sh/kernel/smp.c
View File

@ -3,7 +3,7 @@
* *
* SMP support for the SuperH processors. * SMP support for the SuperH processors.
* *
* Copyright (C) 2002 - 2007 Paul Mundt * Copyright (C) 2002 - 2008 Paul Mundt
* Copyright (C) 2006 - 2007 Akio Idehara * Copyright (C) 2006 - 2007 Akio Idehara
* *
* This file is subject to the terms and conditions of the GNU General Public * This file is subject to the terms and conditions of the GNU General Public
@ -184,6 +184,24 @@ void arch_send_call_function_single_ipi(int cpu)
plat_send_ipi(cpu, SMP_MSG_FUNCTION_SINGLE); plat_send_ipi(cpu, SMP_MSG_FUNCTION_SINGLE);
} }
void smp_message_recv(unsigned int msg)
{
switch (msg) {
case SMP_MSG_FUNCTION:
generic_smp_call_function_interrupt();
break;
case SMP_MSG_RESCHEDULE:
break;
case SMP_MSG_FUNCTION_SINGLE:
generic_smp_call_function_single_interrupt();
break;
default:
printk(KERN_WARNING "SMP %d: %s(): unknown IPI %d\n",
smp_processor_id(), __func__, msg);
break;
}
}
/* Not really SMP stuff ... */ /* Not really SMP stuff ... */
int setup_profiling_timer(unsigned int multiplier) int setup_profiling_timer(unsigned int multiplier)
{ {