| #ifndef __ASM_SH_HARDIRQ_H |
| #define __ASM_SH_HARDIRQ_H |
| |
| #include <linux/config.h> |
| #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; |
| } ____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() ({ int __cpu = smp_processor_id(); \ |
| (local_irq_count(__cpu) + local_bh_count(__cpu) != 0); }) |
| |
| #define in_irq() (local_irq_count(smp_processor_id()) != 0) |
| |
| #ifndef CONFIG_SMP |
| |
| #define hardirq_trylock(cpu) (local_irq_count(cpu) == 0) |
| #define hardirq_endlock(cpu) do { } while (0) |
| |
| #define irq_enter(cpu, irq) (local_irq_count(cpu)++) |
| #define irq_exit(cpu, irq) (local_irq_count(cpu)--) |
| |
| #define synchronize_irq() barrier() |
| |
| #else |
| |
| #error Super-H SMP is not available |
| |
| #endif /* CONFIG_SMP */ |
| #endif /* __ASM_SH_HARDIRQ_H */ |