diff options
Diffstat (limited to 'include/asm-arm26/hardirq.h')
| -rw-r--r-- | include/asm-arm26/hardirq.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/include/asm-arm26/hardirq.h b/include/asm-arm26/hardirq.h new file mode 100644 index 00000000000..791ee1da9bf --- /dev/null +++ b/include/asm-arm26/hardirq.h @@ -0,0 +1,41 @@ +#ifndef __ASM_HARDIRQ_H +#define __ASM_HARDIRQ_H + +#include <linux/config.h> +#include <linux/cache.h> +#include <linux/threads.h> + +typedef struct { + unsigned int __softirq_pending; +} ____cacheline_aligned irq_cpustat_t; + +#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */ + +#define HARDIRQ_BITS 8 + +/* + * The hardirq mask has to be large enough to have space + * for potentially all IRQ sources in the system nesting + * on a single CPU: + */ +#if (1 << HARDIRQ_BITS) < NR_IRQS +# error HARDIRQ_BITS is too low! +#endif + +#define irq_enter() (preempt_count() += HARDIRQ_OFFSET) + +#ifndef CONFIG_SMP + +extern asmlinkage void __do_softirq(void); + +#define irq_exit() \ + do { \ + preempt_count() -= IRQ_EXIT_OFFSET; \ + if (!in_interrupt() && local_softirq_pending()) \ + __do_softirq(); \ + preempt_enable_no_resched(); \ + } while (0) +#endif + + +#endif /* __ASM_HARDIRQ_H */ |