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genirq: Implement irq_data based move_*_irq() versions 

No need to lookup the irq descriptor when calling from a chip callback
function which has irq_data already handy.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2011-02-04 18:46:16 +01:00
parent 77694b408a
commit a439520f8b
2 changed files with 23 additions and 9 deletions
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4
include/linux/irq.h
View File

@ -363,9 +363,13 @@ extern void remove_irq(unsigned int irq, struct irqaction *act);
#if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_PENDING_IRQ)
void move_native_irq(int irq);
void move_masked_irq(int irq);
void irq_move_irq(struct irq_data *data);
void irq_move_masked_irq(struct irq_data *data);
#else
static inline void move_native_irq(int irq) { }
static inline void move_masked_irq(int irq) { }
static inline void irq_move_irq(struct irq_data *data) { }
static inline void irq_move_masked_irq(struct irq_data *data) { }
#endif
extern int no_irq_affinity;

28
kernel/irq/migration.c
View File

@ -4,10 +4,10 @@
#include "internals.h"
void move_masked_irq(int irq)
void irq_move_masked_irq(struct irq_data *idata)
{
struct irq_desc *desc = irq_to_desc(irq);
struct irq_chip *chip = desc->irq_data.chip;
struct irq_desc *desc = irq_data_to_desc(idata);
struct irq_chip *chip = idata->chip;
if (likely(!irqd_is_setaffinity_pending(&desc->irq_data)))
return;
@ -53,12 +53,17 @@ void move_masked_irq(int irq)
cpumask_clear(desc->pending_mask);
}
void move_native_irq(int irq)
void move_masked_irq(int irq)
{
struct irq_desc *desc = irq_to_desc(irq);
irq_move_masked_irq(irq_get_irq_data(irq));
}
void irq_move_irq(struct irq_data *idata)
{
struct irq_desc *desc = irq_data_to_desc(idata);
bool masked;
if (likely(!irqd_is_setaffinity_pending(&desc->irq_data)))
if (likely(!irqd_is_setaffinity_pending(idata)))
return;
if (unlikely(desc->istate & IRQS_DISABLED))
@ -71,8 +76,13 @@ void move_native_irq(int irq)
*/
masked = desc->istate & IRQS_MASKED;
if (!masked)
desc->irq_data.chip->irq_mask(&desc->irq_data);
move_masked_irq(irq);
idata->chip->irq_mask(idata);
irq_move_masked_irq(idata);
if (!masked)
desc->irq_data.chip->irq_unmask(&desc->irq_data);
idata->chip->irq_unmask(idata);
}
void move_native_irq(int irq)
{
irq_move_irq(irq_get_irq_data(irq));
}