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Commit 6f52707e authored by Paul Mundt's avatar Paul Mundt
Browse files

sh: smp: Hook up a timer IPI stub. 



Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent c7936b9a

arch/sh/include/asm/smp.h

+13 −6
Original line number Diff line number Diff line
@@ -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

arch/sh/kernel/smp.c

+18 −0
Original line number Diff line number Diff line
@@ -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);