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sh: smp: Hook up a timer IPI stub.

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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2008-08-06 18:21:03 +09:00
parent c7936b9abc
commit 6f52707e68
2 changed files with 31 additions and 6 deletions
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19
arch/sh/include/asm/smp.h
View file

@ -21,19 +21,26 @@ extern int __cpu_number_map[NR_CPUS];
extern int __cpu_logical_map[NR_CPUS];
#define cpu_logical_map(cpu) __cpu_logical_map[cpu]
#define SMP_MSG_FUNCTION 0
#define SMP_MSG_RESCHEDULE 1
#define SMP_MSG_FUNCTION_SINGLE 2
#define SMP_MSG_NR 3
enum {
SMP_MSG_FUNCTION,
SMP_MSG_RESCHEDULE,
SMP_MSG_FUNCTION_SINGLE,
SMP_MSG_TIMER,
SMP_MSG_NR, /* must be last */
};
void smp_message_recv(unsigned int msg);
void smp_timer_broadcast(cpumask_t mask);
void plat_smp_setup(void);
void plat_prepare_cpus(unsigned int max_cpus);
int plat_smp_processor_id(void);
void plat_start_cpu(unsigned int cpu, unsigned long entry_point);
void plat_send_ipi(unsigned int cpu, unsigned int message);
extern void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi(cpumask_t mask);
void arch_send_call_function_single_ipi(int cpu);
void arch_send_call_function_ipi(cpumask_t mask);
#else

18
arch/sh/kernel/smp.c
View file

@ -184,6 +184,21 @@ void arch_send_call_function_single_ipi(int cpu)
plat_send_ipi(cpu, SMP_MSG_FUNCTION_SINGLE);
}
void smp_timer_broadcast(cpumask_t mask)
{
int cpu;
for_each_cpu_mask(cpu, mask)
plat_send_ipi(cpu, SMP_MSG_TIMER);
}
static void ipi_timer(void)
{
irq_enter();
/* XXX ... */
irq_exit();
}
void smp_message_recv(unsigned int msg)
{
switch (msg) {
@ -195,6 +210,9 @@ void smp_message_recv(unsigned int msg)
case SMP_MSG_FUNCTION_SINGLE:
generic_smp_call_function_single_interrupt();
break;
case SMP_MSG_TIMER:
ipi_timer();
break;
default:
printk(KERN_WARNING "SMP %d: %s(): unknown IPI %d\n",
smp_processor_id(), __func__, msg);