blob: 4a13a2445d5b2bba29d119ecffdc46a4be1ab1cd [file] [log] [blame]
#ifndef __ASM_HARDIRQ_H
#define __ASM_HARDIRQ_H
/* only non-SMP supported */
#include <linux/threads.h>
/* entry.S is sensitive to the offsets of these fields */
typedef struct {
unsigned int __softirq_pending;
unsigned int __local_irq_count;
unsigned int __local_bh_count;
unsigned int __syscall_count;
struct task_struct * __ksoftirqd_task; /* waitqueue is too large */
} ____cacheline_aligned irq_cpustat_t;
#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
/*
* Are we in an interrupt context? Either doing bottom half
* or hardware interrupt processing?
*/
#define in_interrupt() ((local_irq_count(smp_processor_id()) + \
local_bh_count(smp_processor_id())) != 0)
#define in_irq() (local_irq_count(smp_processor_id()) != 0)
#define hardirq_trylock(cpu) (local_irq_count(cpu) == 0)
#define hardirq_endlock(cpu) do { (void)(cpu); } while (0)
#define irq_enter(cpu) (local_irq_count(cpu)++)
#define irq_exit(cpu) (local_irq_count(cpu)--)
#define synchronize_irq() barrier()
#endif /* __ASM_HARDIRQ_H */