511cbce2ff
The new name is irq_poll as iopoll is already taken. Better suggestions welcome. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
#ifndef IRQ_POLL_H
|
|
#define IRQ_POLL_H
|
|
|
|
struct irq_poll;
|
|
typedef int (irq_poll_fn)(struct irq_poll *, int);
|
|
|
|
struct irq_poll {
|
|
struct list_head list;
|
|
unsigned long state;
|
|
unsigned long data;
|
|
int weight;
|
|
int max;
|
|
irq_poll_fn *poll;
|
|
};
|
|
|
|
enum {
|
|
IRQ_POLL_F_SCHED = 0,
|
|
IRQ_POLL_F_DISABLE = 1,
|
|
};
|
|
|
|
/*
|
|
* Returns 0 if we successfully set the IRQ_POLL_F_SCHED bit, indicating
|
|
* that we were the first to acquire this iop for scheduling. If this iop
|
|
* is currently disabled, return "failure".
|
|
*/
|
|
static inline int irq_poll_sched_prep(struct irq_poll *iop)
|
|
{
|
|
if (!test_bit(IRQ_POLL_F_DISABLE, &iop->state))
|
|
return test_and_set_bit(IRQ_POLL_F_SCHED, &iop->state);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static inline int irq_poll_disable_pending(struct irq_poll *iop)
|
|
{
|
|
return test_bit(IRQ_POLL_F_DISABLE, &iop->state);
|
|
}
|
|
|
|
extern void irq_poll_sched(struct irq_poll *);
|
|
extern void irq_poll_init(struct irq_poll *, int, irq_poll_fn *);
|
|
extern void irq_poll_complete(struct irq_poll *);
|
|
extern void __irq_poll_complete(struct irq_poll *);
|
|
extern void irq_poll_enable(struct irq_poll *);
|
|
extern void irq_poll_disable(struct irq_poll *);
|
|
|
|
#endif
|