diff options
Diffstat (limited to 'arch/sh/kernel/smp.c')
| -rw-r--r-- | arch/sh/kernel/smp.c | 46 |
1 files changed, 44 insertions, 2 deletions
diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c index 60c50841143..3c5ad1660bb 100644 --- a/arch/sh/kernel/smp.c +++ b/arch/sh/kernel/smp.c @@ -3,7 +3,7 @@ * * SMP support for the SuperH processors. * - * Copyright (C) 2002 - 2007 Paul Mundt + * Copyright (C) 2002 - 2008 Paul Mundt * Copyright (C) 2006 - 2007 Akio Idehara * * This file is subject to the terms and conditions of the GNU General Public @@ -18,6 +18,7 @@ #include <linux/spinlock.h> #include <linux/mm.h> #include <linux/module.h> +#include <linux/cpu.h> #include <linux/interrupt.h> #include <asm/atomic.h> #include <asm/processor.h> @@ -82,11 +83,16 @@ asmlinkage void __cpuinit start_secondary(void) preempt_disable(); + notify_cpu_starting(smp_processor_id()); + local_irq_enable(); + cpu = smp_processor_id(); + + /* Enable local timers */ + local_timer_setup(cpu); calibrate_delay(); - cpu = smp_processor_id(); smp_store_cpu_info(cpu); cpu_set(cpu, cpu_online_map); @@ -184,6 +190,42 @@ 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(); + local_timer_interrupt(); + irq_exit(); +} + +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; + case SMP_MSG_TIMER: + ipi_timer(); + break; + default: + printk(KERN_WARNING "SMP %d: %s(): unknown IPI %d\n", + smp_processor_id(), __func__, msg); + break; + } +} + /* Not really SMP stuff ... */ int setup_profiling_timer(unsigned int multiplier) { |