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powerpc/cpumask: Convert fixup_irqs to new cpumask API 

Use new cpumask_* functions, and dynamically allocate cpumask in fixup_irqs.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Anton Blanchard 2010-04-26 15:32:35 +00:00 committed by Benjamin Herrenschmidt
parent bfb9126def
commit b6decb7079
3 changed files with 13 additions and 10 deletions
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2
arch/powerpc/include/asm/smp.h
View File

@ -40,7 +40,7 @@ extern void smp_message_recv(int);
DECLARE_PER_CPU(unsigned int, cpu_pvr);
#ifdef CONFIG_HOTPLUG_CPU
extern void fixup_irqs(cpumask_t map);
extern void fixup_irqs(const struct cpumask *map);
int generic_cpu_disable(void);
int generic_cpu_enable(unsigned int cpu);
void generic_cpu_die(unsigned int cpu);

17
arch/powerpc/kernel/irq.c
View File

@ -290,30 +290,33 @@ u64 arch_irq_stat_cpu(unsigned int cpu)
}
#ifdef CONFIG_HOTPLUG_CPU
void fixup_irqs(cpumask_t map)
void fixup_irqs(const struct cpumask *map)
{
struct irq_desc *desc;
unsigned int irq;
static int warned;
cpumask_var_t mask;
alloc_cpumask_var(&mask, GFP_KERNEL);
for_each_irq(irq) {
cpumask_t mask;
desc = irq_to_desc(irq);
if (desc && desc->status & IRQ_PER_CPU)
continue;
cpumask_and(&mask, desc->affinity, &map);
if (any_online_cpu(mask) == NR_CPUS) {
cpumask_and(mask, desc->affinity, map);
if (cpumask_any(mask) >= nr_cpu_ids) {
printk("Breaking affinity for irq %i\n", irq);
mask = map;
cpumask_copy(mask, map);
}
if (desc->chip->set_affinity)
desc->chip->set_affinity(irq, &mask);
desc->chip->set_affinity(irq, mask);
else if (desc->action && !(warned++))
printk("Cannot set affinity for irq %i\n", irq);
}
free_cpumask_var(mask);
local_irq_enable();
mdelay(1);
local_irq_disable();

4
arch/powerpc/kernel/smp.c
View File

@ -313,7 +313,7 @@ int generic_cpu_disable(void)
set_cpu_online(cpu, false);
#ifdef CONFIG_PPC64
vdso_data->processorCount--;
fixup_irqs(cpu_online_map);
fixup_irqs(cpu_online_mask);
#endif
return 0;
}
@ -333,7 +333,7 @@ int generic_cpu_enable(unsigned int cpu)
cpu_relax();
#ifdef CONFIG_PPC64
fixup_irqs(cpu_online_map);
fixup_irqs(cpu_online_mask);
/* counter the irq disable in fixup_irqs */
local_irq_enable();
#endif