From: Stuart Yoder <stuart.yoder@xxxxxxxxxxxxx>
Move irq_choose_cpu() into arch/powerpc/kernel/irq.c so that it can be used
by other PIC drivers. The function is not MPIC-specific.
Signed-off-by: Stuart Yoder <stuart.yoder@xxxxxxxxxxxxx>
Signed-off-by: Timur Tabi <timur@xxxxxxxxxxxxx>
---
arch/powerpc/include/asm/irq.h | 2 ++
arch/powerpc/kernel/irq.c | 35 +++++++++++++++++++++++++++++++++++
arch/powerpc/sysdev/mpic.c | 36 ------------------------------------
3 files changed, 37 insertions(+), 36 deletions(-)
diff --git a/arch/powerpc/include/asm/irq.h b/arch/powerpc/include/asm/irq.h
index 67ab5fb..1792d84 100644
--- a/arch/powerpc/include/asm/irq.h
+++ b/arch/powerpc/include/asm/irq.h
@@ -342,5 +342,7 @@ extern int call_handle_irq(int irq, void *p1,
struct thread_info *tp, void *func);
extern void do_IRQ(struct pt_regs *regs);
+int irq_choose_cpu(const struct cpumask *mask);
+
#endif /* _ASM_IRQ_H */
#endif /* __KERNEL__ */
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index f621b7d..ce9bf93 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -870,6 +870,41 @@ unsigned int irq_find_mapping(struct irq_host *host,
}
EXPORT_SYMBOL_GPL(irq_find_mapping);
+#ifdef CONFIG_SMP
+int irq_choose_cpu(const struct cpumask *mask)
+{
+ int cpuid;
+
+ if (cpumask_equal(mask, cpu_all_mask)) {
+ static int irq_rover;
+ static DEFINE_RAW_SPINLOCK(irq_rover_lock);
+ unsigned long flags;
+
+ /* Round-robin distribution... */
+do_round_robin:
+ raw_spin_lock_irqsave(&irq_rover_lock, flags);
+
+ irq_rover = cpumask_next(irq_rover, cpu_online_mask);
+ if (irq_rover >= nr_cpu_ids)
+ irq_rover = cpumask_first(cpu_online_mask);
+
+ cpuid = irq_rover;
+
+ raw_spin_unlock_irqrestore(&irq_rover_lock, flags);
+ } else {
+ cpuid = cpumask_first_and(mask, cpu_online_mask);
+ if (cpuid >= nr_cpu_ids)
+ goto do_round_robin;
+ }
+
+ return get_hard_smp_processor_id(cpuid);
+}
+#else
+int irq_choose_cpu(const struct cpumask *mask)
+{
+ return hard_smp_processor_id();
+}
+#endif
unsigned int irq_radix_revmap_lookup(struct irq_host *host,
irq_hw_number_t hwirq)
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index f91c065..5ae1142 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -571,42 +571,6 @@ static void __init mpic_scan_ht_pics(struct mpic *mpic)
#endif /* CONFIG_MPIC_U3_HT_IRQS */
-#ifdef CONFIG_SMP
-static int irq_choose_cpu(const struct cpumask *mask)
-{
- int cpuid;
-
- if (cpumask_equal(mask, cpu_all_mask)) {
- static int irq_rover = 0;
- static DEFINE_RAW_SPINLOCK(irq_rover_lock);
- unsigned long flags;
-
- /* Round-robin distribution... */
- do_round_robin:
- raw_spin_lock_irqsave(&irq_rover_lock, flags);
-
- irq_rover = cpumask_next(irq_rover, cpu_online_mask);
- if (irq_rover >= nr_cpu_ids)
- irq_rover = cpumask_first(cpu_online_mask);
-
- cpuid = irq_rover;
-
- raw_spin_unlock_irqrestore(&irq_rover_lock, flags);
- } else {
- cpuid = cpumask_first_and(mask, cpu_online_mask);
- if (cpuid >= nr_cpu_ids)
- goto do_round_robin;
- }
-
- return get_hard_smp_processor_id(cpuid);
-}
-#else
-static int irq_choose_cpu(const struct cpumask *mask)
-{
- return hard_smp_processor_id();
-}
-#endif
-
#define mpic_irq_to_hw(virq) ((unsigned int)irq_map[virq].hwirq)
/* Find an mpic associated with a given linux interrupt */
--
1.7.3.4
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