cregit-Linux how code gets into the kernel

Release 4.7 arch/x86/include/asm/hardirq.h

#ifndef _ASM_X86_HARDIRQ_H

#define _ASM_X86_HARDIRQ_H

#include <linux/threads.h>
#include <linux/irq.h>

typedef struct {
	
unsigned int __softirq_pending;
	
unsigned int __nmi_count;	/* arch dependent */
#ifdef CONFIG_X86_LOCAL_APIC
	
unsigned int apic_timer_irqs;	/* arch dependent */
	
unsigned int irq_spurious_count;
	
unsigned int icr_read_retry_count;
#endif
#ifdef CONFIG_HAVE_KVM
	
unsigned int kvm_posted_intr_ipis;
	
unsigned int kvm_posted_intr_wakeup_ipis;
#endif
	
unsigned int x86_platform_ipis;	/* arch dependent */
	
unsigned int apic_perf_irqs;
	
unsigned int apic_irq_work_irqs;
#ifdef CONFIG_SMP
	
unsigned int irq_resched_count;
	
unsigned int irq_call_count;
	/*
         * irq_tlb_count is double-counted in irq_call_count, so it must be
         * subtracted from irq_call_count when displaying irq_call_count
         */
	
unsigned int irq_tlb_count;
#endif
#ifdef CONFIG_X86_THERMAL_VECTOR
	
unsigned int irq_thermal_count;
#endif
#ifdef CONFIG_X86_MCE_THRESHOLD
	
unsigned int irq_threshold_count;
#endif
#ifdef CONFIG_X86_MCE_AMD
	
unsigned int irq_deferred_error_count;
#endif
#if IS_ENABLED(CONFIG_HYPERV) || defined(CONFIG_XEN)
	
unsigned int irq_hv_callback_count;
#endif
} 
____cacheline_aligned irq_cpustat_t;

DECLARE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat);


#define __ARCH_IRQ_STAT


#define inc_irq_stat(member)	this_cpu_inc(irq_stat.member)


#define local_softirq_pending()	this_cpu_read(irq_stat.__softirq_pending)


#define __ARCH_SET_SOFTIRQ_PENDING


#define set_softirq_pending(x)	\
		this_cpu_write(irq_stat.__softirq_pending, (x))

#define or_softirq_pending(x)	this_cpu_or(irq_stat.__softirq_pending, (x))

extern void ack_bad_irq(unsigned int irq);

extern u64 arch_irq_stat_cpu(unsigned int cpu);

#define arch_irq_stat_cpu	arch_irq_stat_cpu

extern u64 arch_irq_stat(void);

#define arch_irq_stat		arch_irq_stat

#endif /* _ASM_X86_HARDIRQ_H */

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brian gerstbrian gerst11554.76%210.00%
jan beulichjan beulich2712.86%210.00%
thomas gleixnerthomas gleixner2110.00%315.00%
aravind gopalakrishnanaravind gopalakrishnan94.29%15.00%
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