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ARM: SMP: provide accessors for irq_stat data 

Provide __inc_irq_stat() and __get_irq_stat() to increment and
read the irq stat counters.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2010-11-15 14:15:03 +00:00
parent ec405ea9fe
commit 46c48f222f
2 changed files with 5 additions and 2 deletions
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3
arch/arm/include/asm/hardirq.h
View File

@ -14,6 +14,9 @@ typedef struct {
#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */ #include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
#define __inc_irq_stat(cpu, member) __IRQ_STAT(cpu, member)++
#define __get_irq_stat(cpu, member) __IRQ_STAT(cpu, member)
#if NR_IRQS > 512 #if NR_IRQS > 512
#define HARDIRQ_BITS 10 #define HARDIRQ_BITS 10
#elif NR_IRQS > 256 #elif NR_IRQS > 256

4
arch/arm/kernel/smp.c
View File

@ -423,7 +423,7 @@ asmlinkage void __exception do_local_timer(struct pt_regs *regs)
int cpu = smp_processor_id(); int cpu = smp_processor_id();
if (local_timer_ack()) { if (local_timer_ack()) {
irq_stat[cpu].local_timer_irqs++; __inc_irq_stat(cpu, local_timer_irqs);
ipi_timer(); ipi_timer();
} }
@ -437,7 +437,7 @@ void show_local_irqs(struct seq_file *p)
seq_printf(p, "LOC: "); seq_printf(p, "LOC: ");
for_each_present_cpu(cpu) for_each_present_cpu(cpu)
seq_printf(p, "%10u ", irq_stat[cpu].local_timer_irqs); seq_printf(p, "%10u ", __get_irq_stat(cpu, local_timer_irqs));
seq_putc(p, '\n'); seq_putc(p, '\n');
} }