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Commit b54992fe authored by Russell King's avatar Russell King
Browse files

ARM: SMP: collect IPI and local timer IRQs for /proc/stat 



The IPI and local timer interrupts weren't being properly accounted
for in /proc/stat.  Collect them from the irq_stat structure, and
return their sum.

Reviewed-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 4a88abd7

arch/arm/include/asm/hardirq.h

+8 −0
Original line number Original line Diff line number Diff line
@@ -22,6 +22,14 @@ typedef struct { 
#define __inc_irq_stat(cpu, member)	__IRQ_STAT(cpu, member)++

#define __inc_irq_stat(cpu, member)	__IRQ_STAT(cpu, member)++

#define __get_irq_stat(cpu, member)	__IRQ_STAT(cpu, member)

#define __get_irq_stat(cpu, member)	__IRQ_STAT(cpu, member)





#ifdef CONFIG_SMP

u64 smp_irq_stat_cpu(unsigned int cpu);

#else

#define smp_irq_stat_cpu(cpu)	0

#endif



#define arch_irq_stat_cpu	smp_irq_stat_cpu



#if NR_IRQS > 512

#if NR_IRQS > 512

#define HARDIRQ_BITS	10

#define HARDIRQ_BITS	10

#elif NR_IRQS > 256

#elif NR_IRQS > 256

arch/arm/kernel/smp.c

+15 −0
Original line number Original line Diff line number Diff line
@@ -406,6 +406,21 @@ void show_ipi_list(struct seq_file *p, int prec) 
	}

	}

}

}





u64 smp_irq_stat_cpu(unsigned int cpu)

{

	u64 sum = 0;

	int i;



	for (i = 0; i < NR_IPI; i++)

		sum += __get_irq_stat(cpu, ipi_irqs[i]);



#ifdef CONFIG_LOCAL_TIMERS

	sum += __get_irq_stat(cpu, local_timer_irqs);

#endif



	return sum;

}



/*

/*

 * Timer (local or broadcast) support

 * Timer (local or broadcast) support

 */

 */