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sh: Move platform smp ops in to their own structure.

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This cribs the MIPS plat_smp_ops approach for wrapping up the platform
ops. This will allow for mixing and matching different ops on the same
platform in the future.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
2010-03-30 12:38:01 +09:00
parent 4a6feab0ee
commit 3366e3585f
9 changed files with 95 additions and 23 deletions
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24
arch/sh/kernel/smp.c
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@@ -3,7 +3,7 @@
*
* SMP support for the SuperH processors.
*
* Copyright (C) 2002 - 2008 Paul Mundt
* Copyright (C) 2002 - 2010 Paul Mundt
* Copyright (C) 2006 - 2007 Akio Idehara
*
* This file is subject to the terms and conditions of the GNU General Public
@@ -31,6 +31,16 @@
int __cpu_number_map[NR_CPUS]; /* Map physical to logical */
int __cpu_logical_map[NR_CPUS]; /* Map logical to physical */
struct plat_smp_ops *mp_ops = NULL;
void __cpuinit register_smp_ops(struct plat_smp_ops *ops)
{
if (mp_ops)
printk(KERN_WARNING "Overriding previously set SMP ops\n");
mp_ops = ops;
}
static inline void __init smp_store_cpu_info(unsigned int cpu)
{
struct sh_cpuinfo *c = cpu_data + cpu;
@@ -46,7 +56,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
init_new_context(current, &init_mm);
current_thread_info()->cpu = cpu;
plat_prepare_cpus(max_cpus);
mp_ops->prepare_cpus(max_cpus);
#ifndef CONFIG_HOTPLUG_CPU
init_cpu_present(&cpu_possible_map);
@@ -127,7 +137,7 @@ int __cpuinit __cpu_up(unsigned int cpu)
(unsigned long)&stack_start + sizeof(stack_start));
wmb();
plat_start_cpu(cpu, (unsigned long)_stext);
mp_ops->start_cpu(cpu, (unsigned long)_stext);
timeout = jiffies + HZ;
while (time_before(jiffies, timeout)) {
@@ -159,7 +169,7 @@ void __init smp_cpus_done(unsigned int max_cpus)
void smp_send_reschedule(int cpu)
{
plat_send_ipi(cpu, SMP_MSG_RESCHEDULE);
mp_ops->send_ipi(cpu, SMP_MSG_RESCHEDULE);
}
void smp_send_stop(void)
@@ -172,12 +182,12 @@ void arch_send_call_function_ipi_mask(const struct cpumask *mask)
int cpu;
for_each_cpu(cpu, mask)
plat_send_ipi(cpu, SMP_MSG_FUNCTION);
mp_ops->send_ipi(cpu, SMP_MSG_FUNCTION);
}
void arch_send_call_function_single_ipi(int cpu)
{
plat_send_ipi(cpu, SMP_MSG_FUNCTION_SINGLE);
mp_ops->send_ipi(cpu, SMP_MSG_FUNCTION_SINGLE);
}
void smp_timer_broadcast(const struct cpumask *mask)
@@ -185,7 +195,7 @@ void smp_timer_broadcast(const struct cpumask *mask)
int cpu;
for_each_cpu(cpu, mask)
plat_send_ipi(cpu, SMP_MSG_TIMER);
mp_ops->send_ipi(cpu, SMP_MSG_TIMER);
}
static void ipi_timer(void)