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genirq: Sanitize dynamic irq handling

Forráskód böngészése 
Use the cleanup functions of the dynamic allocator. No need to have
separate implementations.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Thomas Gleixner
2010-09-29 18:46:55 +02:00
szülő b7d0d8258a
commit b7b29338dc
4 fájl változott, egészen pontosan 31 új sor hozzáadva és 125 régi sor törölve
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41
kernel/irq/irqdesc.c
Fájl megtekintése

@@ -53,12 +53,21 @@ static void desc_smp_init(struct irq_desc *desc, int node)
{
desc->irq_data.node = node;
cpumask_copy(desc->irq_data.affinity, irq_default_affinity);
#ifdef CONFIG_GENERIC_PENDING_IRQ
cpumask_clear(desc->pending_mask);
#endif
}
static inline int desc_node(struct irq_desc *desc)
{
return desc->irq_data.node;
}
#else
static inline int
alloc_masks(struct irq_desc *desc, gfp_t gfp, int node) { return 0; }
static inline void desc_smp_init(struct irq_desc *desc, int node) { }
static inline int desc_node(struct irq_desc *desc) { return 0; }
#endif
static void desc_set_defaults(unsigned int irq, struct irq_desc *desc, int node)
@@ -71,6 +80,8 @@ static void desc_set_defaults(unsigned int irq, struct irq_desc *desc, int node)
desc->status = IRQ_DEFAULT_INIT_FLAGS;
desc->handle_irq = handle_bad_irq;
desc->depth = 1;
desc->irq_count = 0;
desc->irqs_unhandled = 0;
desc->name = NULL;
memset(desc->kstat_irqs, 0, nr_cpu_ids * sizeof(*(desc->kstat_irqs)));
desc_smp_init(desc, node);
@@ -286,23 +297,9 @@ struct irq_desc *irq_to_desc_alloc_node(unsigned int irq, int node)
return irq_to_desc(irq);
}
#ifdef CONFIG_SMP
static inline int desc_node(struct irq_desc *desc)
{
return desc->irq_data.node;
}
#else
static inline int desc_node(struct irq_desc *desc) { return 0; }
#endif
static void free_desc(unsigned int irq)
{
struct irq_desc *desc = irq_to_desc(irq);
unsigned long flags;
raw_spin_lock_irqsave(&desc->lock, flags);
desc_set_defaults(irq, desc, desc_node(desc));
raw_spin_unlock_irqrestore(&desc->lock, flags);
dynamic_irq_cleanup(irq);
}
static inline int alloc_descs(unsigned int start, unsigned int cnt, int node)
@@ -409,10 +406,18 @@ unsigned int irq_get_next_irq(unsigned int offset)
return find_next_bit(allocated_irqs, nr_irqs, offset);
}
/* Statistics access */
void clear_kstat_irqs(struct irq_desc *desc)
/**
* dynamic_irq_cleanup - cleanup a dynamically allocated irq
* @irq: irq number to initialize
*/
void dynamic_irq_cleanup(unsigned int irq)
{
memset(desc->kstat_irqs, 0, nr_cpu_ids * sizeof(*(desc->kstat_irqs)));
struct irq_desc *desc = irq_to_desc(irq);
unsigned long flags;
raw_spin_lock_irqsave(&desc->lock, flags);
desc_set_defaults(irq, desc, desc_node(desc));
raw_spin_unlock_irqrestore(&desc->lock, flags);
}
unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)