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genirq: Distangle irq.h

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Move irq_desc and internal functions out of irq.h

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Thomas Gleixner
2010-10-01 16:03:45 +02:00
parent fe21221386
commit e144710b30
3 changed files with 284 additions and 279 deletions
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100
kernel/irq/internals.h
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@@ -1,6 +1,7 @@
/*
* IRQ subsystem internal functions and variables:
*/
#include <linux/irqdesc.h>
extern int noirqdebug;
@@ -22,6 +23,9 @@ extern void init_kstat_irqs(struct irq_desc *desc, int node, int nr);
extern void clear_kstat_irqs(struct irq_desc *desc);
extern raw_spinlock_t sparse_irq_lock;
/* Resending of interrupts :*/
void check_irq_resend(struct irq_desc *desc, unsigned int irq);
#ifdef CONFIG_SPARSE_IRQ
void replace_irq_desc(unsigned int irq, struct irq_desc *desc);
#endif
@@ -105,3 +109,99 @@ static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc)
#undef P
/* Stuff below will be cleaned up after the sparse allocator is done */
#ifdef CONFIG_SMP
/**
* alloc_desc_masks - allocate cpumasks for irq_desc
* @desc: pointer to irq_desc struct
* @node: node which will be handling the cpumasks
* @boot: true if need bootmem
*
* Allocates affinity and pending_mask cpumask if required.
* Returns true if successful (or not required).
*/
static inline bool alloc_desc_masks(struct irq_desc *desc, int node,
bool boot)
{
gfp_t gfp = GFP_ATOMIC;
if (boot)
gfp = GFP_NOWAIT;
#ifdef CONFIG_CPUMASK_OFFSTACK
if (!alloc_cpumask_var_node(&desc->irq_data.affinity, gfp, node))
return false;
#ifdef CONFIG_GENERIC_PENDING_IRQ
if (!alloc_cpumask_var_node(&desc->pending_mask, gfp, node)) {
free_cpumask_var(desc->irq_data.affinity);
return false;
}
#endif
#endif
return true;
}
static inline void init_desc_masks(struct irq_desc *desc)
{
cpumask_setall(desc->irq_data.affinity);
#ifdef CONFIG_GENERIC_PENDING_IRQ
cpumask_clear(desc->pending_mask);
#endif
}
/**
* init_copy_desc_masks - copy cpumasks for irq_desc
* @old_desc: pointer to old irq_desc struct
* @new_desc: pointer to new irq_desc struct
*
* Insures affinity and pending_masks are copied to new irq_desc.
* If !CONFIG_CPUMASKS_OFFSTACK the cpumasks are embedded in the
* irq_desc struct so the copy is redundant.
*/
static inline void init_copy_desc_masks(struct irq_desc *old_desc,
struct irq_desc *new_desc)
{
#ifdef CONFIG_CPUMASK_OFFSTACK
cpumask_copy(new_desc->irq_data.affinity, old_desc->irq_data.affinity);
#ifdef CONFIG_GENERIC_PENDING_IRQ
cpumask_copy(new_desc->pending_mask, old_desc->pending_mask);
#endif
#endif
}
static inline void free_desc_masks(struct irq_desc *old_desc,
struct irq_desc *new_desc)
{
free_cpumask_var(old_desc->irq_data.affinity);
#ifdef CONFIG_GENERIC_PENDING_IRQ
free_cpumask_var(old_desc->pending_mask);
#endif
}
#else /* !CONFIG_SMP */
static inline bool alloc_desc_masks(struct irq_desc *desc, int node,
bool boot)
{
return true;
}
static inline void init_desc_masks(struct irq_desc *desc)
{
}
static inline void init_copy_desc_masks(struct irq_desc *old_desc,
struct irq_desc *new_desc)
{
}
static inline void free_desc_masks(struct irq_desc *old_desc,
struct irq_desc *new_desc)
{
}
#endif /* CONFIG_SMP */