sparseirq: make some func to be used with genirq

Impact: clean up sparseirq fallout on random.c

Ingo suggested to change some ifdef from SPARSE_IRQ to GENERIC_HARDIRQS
so we could some #ifdef later if all arch support genirq

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/drivers/char/random.c b/drivers/char/random.c
index 7c13581ca9cd6ac1ea4a2d54e80397831cebd75f..a778918c8f4282419d585b5acf55aa8ec6adeda3 100644 (file)
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -558,7 +558,7 @@ struct timer_rand_state {
        unsigned dont_count_entropy:1;
 };
 
-#ifndef CONFIG_SPARSE_IRQ
+#ifndef CONFIG_GENERIC_HARDIRQS
 
 static struct timer_rand_state *irq_timer_state[NR_IRQS];
 

diff --git a/drivers/pci/intr_remapping.c b/drivers/pci/intr_remapping.c
index f78371b2252976efb8ab86c7eaf87a7240949ea5..3d604132a04f2ce7c2854c6150f35a0b3b10da6f 100644 (file)
--- a/drivers/pci/intr_remapping.c
+++ b/drivers/pci/intr_remapping.c
@@ -20,7 +20,7 @@ struct irq_2_iommu {
        u8  irte_mask;
 };
 
-#ifdef CONFIG_SPARSE_IRQ
+#ifdef CONFIG_GENERIC_HARDIRQS
 static struct irq_2_iommu *get_one_free_irq_2_iommu(int cpu)
 {
        struct irq_2_iommu *iommu;

diff --git a/include/linux/irq.h b/include/linux/irq.h
index f899b502f18622dce2c509aac5c656ef8150216f..e9a878978c852ebd4f7ec049541b04c7bf5d266e 100644 (file)
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -160,12 +160,10 @@ struct irq_2_iommu;
  */
 struct irq_desc {
        unsigned int            irq;
-#ifdef CONFIG_SPARSE_IRQ
        struct timer_rand_state *timer_rand_state;
        unsigned int            *kstat_irqs;
-# ifdef CONFIG_INTR_REMAP
+#ifdef CONFIG_INTR_REMAP
        struct irq_2_iommu      *irq_2_iommu;
-# endif
 #endif
        irq_flow_handler_t      handle_irq;
        struct irq_chip         *chip;
@@ -202,13 +200,13 @@ extern void arch_free_chip_data(struct irq_desc *old_desc, struct irq_desc *desc
 extern struct irq_desc irq_desc[NR_IRQS];
 #else /* CONFIG_SPARSE_IRQ */
 extern struct irq_desc *move_irq_desc(struct irq_desc *old_desc, int cpu);
+#endif /* CONFIG_SPARSE_IRQ */
 
 #define kstat_irqs_this_cpu(DESC) \
        ((DESC)->kstat_irqs[smp_processor_id()])
 #define kstat_incr_irqs_this_cpu(irqno, DESC) \
        ((DESC)->kstat_irqs[smp_processor_id()]++)
 
-#endif /* CONFIG_SPARSE_IRQ */
 
 extern struct irq_desc *irq_to_desc_alloc_cpu(unsigned int irq, int cpu);
 

diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h
index 570d2041311911352da76c830073f7c9aa314457..a3431b164bea920c100cd4bbb05c10fe50bfff69 100644 (file)
--- a/include/linux/kernel_stat.h
+++ b/include/linux/kernel_stat.h
@@ -28,7 +28,7 @@ struct cpu_usage_stat {
 
 struct kernel_stat {
        struct cpu_usage_stat   cpustat;
-#ifndef CONFIG_SPARSE_IRQ
+#ifndef CONFIG_GENERIC_HARDIRQS
        unsigned int irqs[NR_IRQS];
 #endif
 };
@@ -41,7 +41,7 @@ DECLARE_PER_CPU(struct kernel_stat, kstat);
 
 extern unsigned long long nr_context_switches(void);
 
-#ifndef CONFIG_SPARSE_IRQ
+#ifndef CONFIG_GENERIC_HARDIRQS
 #define kstat_irqs_this_cpu(irq) \
        (kstat_this_cpu.irqs[irq])
 
@@ -55,7 +55,7 @@ static inline void kstat_incr_irqs_this_cpu(unsigned int irq,
 #endif
 
 
-#ifndef CONFIG_SPARSE_IRQ
+#ifndef CONFIG_GENERIC_HARDIRQS
 static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
 {
        return kstat_cpu(cpu).irqs[irq];

diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index c20db0be9173969a52c7ab75341cc8171db63d46..48299a8a22f8cfe16384e432416b88d5f91f6f9b 100644 (file)
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -213,6 +213,7 @@ struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned_in_smp = {
        }
 };
 
+static unsigned int kstat_irqs_all[NR_IRQS][NR_CPUS];
 int __init early_irq_init(void)
 {
        struct irq_desc *desc;
@@ -222,8 +223,10 @@ int __init early_irq_init(void)
        desc = irq_desc;
        count = ARRAY_SIZE(irq_desc);
 
-       for (i = 0; i < count; i++)
+       for (i = 0; i < count; i++) {
                desc[i].irq = i;
+               desc[i].kstat_irqs = kstat_irqs_all[i];
+       }
 
        return arch_early_irq_init();
 }
@@ -451,12 +454,10 @@ void early_init_irq_lock_class(void)
        }
 }
 
-#ifdef CONFIG_SPARSE_IRQ
 unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
 {
        struct irq_desc *desc = irq_to_desc(irq);
        return desc ? desc->kstat_irqs[cpu] : 0;
 }
-#endif
 EXPORT_SYMBOL(kstat_irqs_cpu);