forked from Minki/linux
b6276f353b
Implement set_perf_counter_pending() with a self-IPI so that it will run ASAP in a usable context. For now use a second IRQ vector, because the primary vector pokes the apic in funny ways that seem to confuse things. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> LKML-Reference: <20090406094517.724626696@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
#ifndef _ASM_X86_HARDIRQ_H
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#define _ASM_X86_HARDIRQ_H
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#include <linux/threads.h>
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#include <linux/irq.h>
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typedef struct {
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unsigned int __softirq_pending;
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unsigned int __nmi_count; /* arch dependent */
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unsigned int irq0_irqs;
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#ifdef CONFIG_X86_LOCAL_APIC
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unsigned int apic_timer_irqs; /* arch dependent */
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unsigned int irq_spurious_count;
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#endif
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unsigned int generic_irqs; /* arch dependent */
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unsigned int apic_perf_irqs;
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unsigned int apic_pending_irqs;
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#ifdef CONFIG_SMP
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unsigned int irq_resched_count;
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unsigned int irq_call_count;
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unsigned int irq_tlb_count;
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#endif
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#ifdef CONFIG_X86_MCE
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unsigned int irq_thermal_count;
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# ifdef CONFIG_X86_64
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unsigned int irq_threshold_count;
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# endif
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#endif
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} ____cacheline_aligned irq_cpustat_t;
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DECLARE_PER_CPU(irq_cpustat_t, irq_stat);
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/* We can have at most NR_VECTORS irqs routed to a cpu at a time */
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#define MAX_HARDIRQS_PER_CPU NR_VECTORS
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#define __ARCH_IRQ_STAT
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#define inc_irq_stat(member) percpu_add(irq_stat.member, 1)
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#define local_softirq_pending() percpu_read(irq_stat.__softirq_pending)
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#define __ARCH_SET_SOFTIRQ_PENDING
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#define set_softirq_pending(x) percpu_write(irq_stat.__softirq_pending, (x))
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#define or_softirq_pending(x) percpu_or(irq_stat.__softirq_pending, (x))
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extern void ack_bad_irq(unsigned int irq);
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extern u64 arch_irq_stat_cpu(unsigned int cpu);
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#define arch_irq_stat_cpu arch_irq_stat_cpu
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extern u64 arch_irq_stat(void);
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#define arch_irq_stat arch_irq_stat
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#endif /* _ASM_X86_HARDIRQ_H */
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