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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [include/] [asm-sh/] [hardirq.h] - Blame information for rev 1774

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1 1275 phoenix
#ifndef __ASM_SH_HARDIRQ_H
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#define __ASM_SH_HARDIRQ_H
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#include <linux/config.h>
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#include <linux/threads.h>
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/* entry.S is sensitive to the offsets of these fields */
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typedef struct {
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        unsigned int __softirq_pending;
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        unsigned int __local_irq_count;
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        unsigned int __local_bh_count;
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        unsigned int __syscall_count;
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        struct task_struct * __ksoftirqd_task;
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} ____cacheline_aligned irq_cpustat_t;
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#include <linux/irq_cpustat.h>  /* Standard mappings for irq_cpustat_t above */
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/*
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 * Are we in an interrupt context? Either doing bottom half
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 * or hardware interrupt processing?
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 */
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#define in_interrupt() ({ int __cpu = smp_processor_id(); \
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        (local_irq_count(__cpu) + local_bh_count(__cpu) != 0); })
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#define in_irq() (local_irq_count(smp_processor_id()) != 0)
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#ifndef CONFIG_SMP
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#define hardirq_trylock(cpu)    (local_irq_count(cpu) == 0)
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#define hardirq_endlock(cpu)    do { } while (0)
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#define irq_enter(cpu, irq)     (local_irq_count(cpu)++)
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#define irq_exit(cpu, irq)      (local_irq_count(cpu)--)
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#define synchronize_irq()       barrier()
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#else
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#error Super-H SMP is not available
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#endif /* CONFIG_SMP */
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#endif /* __ASM_SH_HARDIRQ_H */

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