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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-11-15 15:46:46 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-12-20 16:08:01 +0100 |
| commit | b54992fe1b4bad7b7488d58b8696e4e8974fdab0 (patch) | |
| tree | 42c87b7a7f04627c841467ca65cf4e90f87ce2e2 /arch/arm | |
| parent | ARM: SMP: provide individual IPI interrupt statistics (diff) | |
| download | linux-b54992fe1b4bad7b7488d58b8696e4e8974fdab0.tar.xz linux-b54992fe1b4bad7b7488d58b8696e4e8974fdab0.zip | |
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: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/include/asm/hardirq.h | 8 | ||||
| -rw-r--r-- | arch/arm/kernel/smp.c | 15 |
2 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm/include/asm/hardirq.h b/arch/arm/include/asm/hardirq.h index c52e2507c9e0..89ad1805e579 100644 --- a/arch/arm/include/asm/hardirq.h +++ b/arch/arm/include/asm/hardirq.h @@ -22,6 +22,14 @@ typedef struct { #define __inc_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 #define HARDIRQ_BITS 10 #elif NR_IRQS > 256 diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index fa0c5f6e1587..1de3e13a42a1 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -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 */ |