sparc64: Use a seperate counter for timer interrupts and NMI checks, like x86.
This keeps us from having to use kstat_irqs_cpu() from the NMI handler,
the former of which is a profiled function.
Instead we use a currently empty slot in the cpu_data
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/include/asm/cpudata_64.h b/arch/sparc/include/asm/cpudata_64.h
index 926397d..050ef35 100644
--- a/arch/sparc/include/asm/cpudata_64.h
+++ b/arch/sparc/include/asm/cpudata_64.h
@@ -17,7 +17,7 @@
unsigned int __nmi_count;
unsigned long clock_tick; /* %tick's per second */
unsigned long __pad;
- unsigned int __pad1;
+ unsigned int irq0_irqs;
unsigned int __pad2;
/* Dcache line 2, rarely used */
diff --git a/arch/sparc/kernel/nmi.c b/arch/sparc/kernel/nmi.c
index b287b62..75a3d1a 100644
--- a/arch/sparc/kernel/nmi.c
+++ b/arch/sparc/kernel/nmi.c
@@ -92,7 +92,6 @@
notrace __kprobes void perfctr_irq(int irq, struct pt_regs *regs)
{
unsigned int sum, touched = 0;
- int cpu = smp_processor_id();
clear_softint(1 << irq);
@@ -106,7 +105,7 @@
else
pcr_ops->write(PCR_PIC_PRIV);
- sum = kstat_irqs_cpu(0, cpu);
+ sum = local_cpu_data().irq0_irqs;
if (__get_cpu_var(nmi_touch)) {
__get_cpu_var(nmi_touch) = 0;
touched = 1;
diff --git a/arch/sparc/kernel/time_64.c b/arch/sparc/kernel/time_64.c
index 67e1651..f25858e 100644
--- a/arch/sparc/kernel/time_64.c
+++ b/arch/sparc/kernel/time_64.c
@@ -728,6 +728,7 @@
irq_enter();
+ local_cpu_data().irq0_irqs++;
kstat_incr_irqs_this_cpu(0, irq_to_desc(0));
if (unlikely(!evt->event_handler)) {