linux/include/asm-x86/hardirq_32.h

#ifndef __ASM_HARDIRQ_H
#define __ASM_HARDIRQ_H

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

typedef struct {
	unsigned int __softirq_pending;
	unsigned long idle_timestamp;
	unsigned int __nmi_count;	/* arch dependent */
	unsigned int apic_timer_irqs;	/* arch dependent */
	unsigned int irq0_irqs;
	unsigned int irq_resched_count;
	unsigned int irq_call_count;
	unsigned int irq_tlb_count;
	unsigned int irq_thermal_count;
	unsigned int irq_spurious_count;
} ____cacheline_aligned irq_cpustat_t;

DECLARE_PER_CPU(irq_cpustat_t, irq_stat);

#define __ARCH_IRQ_STAT
#define __IRQ_STAT(cpu, member) (per_cpu(irq_stat, cpu).member)

void ack_bad_irq(unsigned int irq);
#include <linux/irq_cpustat.h>

#endif /* __ASM_HARDIRQ_H */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 22:20:36 +00:00			`#ifndef __ASM_HARDIRQ_H`
			`#define __ASM_HARDIRQ_H`

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

			`typedef struct {`
			`unsigned int __softirq_pending;`
			`unsigned long idle_timestamp;`
			`unsigned int __nmi_count; /* arch dependent */`
			`unsigned int apic_timer_irqs; /* arch dependent */`
x86: Fix irq0 / local apic timer accounting The clock events merge introduced a change to the nmi watchdog code to handle the not longer increasing local apic timer count in the broadcast mode. This is fine for UP, but on SMP it pampers over a stuck CPU which is not handling the broadcast interrupt due to the unconditional sum up of local apic timer count and irq0 count. To cover all cases we need to keep track on which CPU irq0 is handled. In theory this is CPU#0 due to the explicit disabling of irq balancing for irq0, but there are systems which ignore this on the hardware level. The per cpu irq0 accounting allows us to remove the irq0 to CPU0 binding as well. Add a per cpu counter for irq0 and evaluate this instead of the global irq0 count in the nmi watchdog code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> 2007-10-12 21:04:06 +00:00			`unsigned int irq0_irqs;`
x86: expand /proc/interrupts to include missing vectors, v2 Add missing IRQs and IRQ descriptions to /proc/interrupts. /proc/interrupts is most useful when it displays every IRQ vector in use by the system, not just those somebody thought would be interesting. This patch inserts the following vector displays to the i386 and x86_64 platforms, as appropriate: rescheduling interrupts TLB flush interrupts function call interrupts thermal event interrupts threshold interrupts spurious interrupts A threshold interrupt occurs when ECC memory correction is occuring at too high a frequency. Thresholds are used by the ECC hardware as occasional ECC failures are part of normal operation, but long sequences of ECC failures usually indicate a memory chip that is about to fail. Thermal event interrupts occur when a temperature threshold has been exceeded for some CPU chip. IIRC, a thermal interrupt is also generated when the temperature drops back to a normal level. A spurious interrupt is an interrupt that was raised then lowered by the device before it could be fully processed by the APIC. Hence the apic sees the interrupt but does not know what device it came from. For this case the APIC hardware will assume a vector of 0xff. Rescheduling, call, and TLB flush interrupts are sent from one CPU to another per the needs of the OS. Typically, their statistics would be used to discover if an interrupt flood of the given type has been occuring. AK: merged v2 and v4 which had some more tweaks AK: replace Local interrupts with Local timer interrupts AK: Fixed description of interrupt types. [ tglx: arch/x86 adaptation ] [ mingo: small cleanup ] Signed-off-by: Joe Korty <joe.korty@ccur.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Tim Hockin <thockin@hockin.org> Cc: Andi Kleen <ak@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> 2007-10-17 16:04:40 +00:00			`unsigned int irq_resched_count;`
			`unsigned int irq_call_count;`
			`unsigned int irq_tlb_count;`
			`unsigned int irq_thermal_count;`
			`unsigned int irq_spurious_count;`
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 22:20:36 +00:00			`} ____cacheline_aligned irq_cpustat_t;`

			`DECLARE_PER_CPU(irq_cpustat_t, irq_stat);`

			`#define __ARCH_IRQ_STAT`
			`#define __IRQ_STAT(cpu, member) (per_cpu(irq_stat, cpu).member)`

			`void ack_bad_irq(unsigned int irq);`
			`#include <linux/irq_cpustat.h>`

			`#endif /* __ASM_HARDIRQ_H */`