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authorThomas Gleixner <tglx@linutronix.de>2008-10-15 15:27:23 +0200
committerIngo Molnar <mingo@elte.hu>2008-10-16 16:53:15 +0200
commitd6c88a507ef0b6afdb013cba4e7804ba7324d99a (patch)
treecdc4041acc212585e3920ad50bf2574cec04076d /kernel/irq
parentee32c9732244bde4b9b59eeac2814c23e2b71f8d (diff)
downloadop-kernel-dev-d6c88a507ef0b6afdb013cba4e7804ba7324d99a.zip
op-kernel-dev-d6c88a507ef0b6afdb013cba4e7804ba7324d99a.tar.gz
genirq: revert dynarray
Revert the dynarray changes. They need more thought and polishing. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/irq')
-rw-r--r--kernel/irq/chip.c30
-rw-r--r--kernel/irq/handle.c114
2 files changed, 14 insertions, 130 deletions
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index e6f73db..d96d6f6 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -326,11 +326,7 @@ handle_simple_irq(unsigned int irq, struct irq_desc *desc)
if (unlikely(desc->status & IRQ_INPROGRESS))
goto out_unlock;
desc->status &= ~(IRQ_REPLAY | IRQ_WAITING);
-#ifdef CONFIG_HAVE_DYN_ARRAY
- kstat_irqs_this_cpu(desc)++;
-#else
- kstat_irqs_this_cpu(irq)++;
-#endif
+ kstat_incr_irqs_this_cpu(irq, desc);
action = desc->action;
if (unlikely(!action || (desc->status & IRQ_DISABLED)))
@@ -371,11 +367,7 @@ handle_level_irq(unsigned int irq, struct irq_desc *desc)
if (unlikely(desc->status & IRQ_INPROGRESS))
goto out_unlock;
desc->status &= ~(IRQ_REPLAY | IRQ_WAITING);
-#ifdef CONFIG_HAVE_DYN_ARRAY
- kstat_irqs_this_cpu(desc)++;
-#else
- kstat_irqs_this_cpu(irq)++;
-#endif
+ kstat_incr_irqs_this_cpu(irq, desc);
/*
* If its disabled or no action available
@@ -422,11 +414,7 @@ handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc)
goto out;
desc->status &= ~(IRQ_REPLAY | IRQ_WAITING);
-#ifdef CONFIG_HAVE_DYN_ARRAY
- kstat_irqs_this_cpu(desc)++;
-#else
- kstat_irqs_this_cpu(irq)++;
-#endif
+ kstat_incr_irqs_this_cpu(irq, desc);
/*
* If its disabled or no action available
@@ -490,11 +478,7 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc)
mask_ack_irq(desc, irq);
goto out_unlock;
}
-#ifdef CONFIG_HAVE_DYN_ARRAY
- kstat_irqs_this_cpu(desc)++;
-#else
- kstat_irqs_this_cpu(irq)++;
-#endif
+ kstat_incr_irqs_this_cpu(irq, desc);
/* Start handling the irq */
desc->chip->ack(irq);
@@ -549,11 +533,7 @@ handle_percpu_irq(unsigned int irq, struct irq_desc *desc)
{
irqreturn_t action_ret;
-#ifdef CONFIG_HAVE_DYN_ARRAY
- kstat_irqs_this_cpu(desc)++;
-#else
- kstat_irqs_this_cpu(irq)++;
-#endif
+ kstat_incr_irqs_this_cpu(irq, desc);
if (desc->chip->ack)
desc->chip->ack(irq);
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index f837133..9fe86b3 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -18,11 +18,6 @@
#include "internals.h"
-/*
- * lockdep: we want to handle all irq_desc locks as a single lock-class:
- */
-static struct lock_class_key irq_desc_lock_class;
-
/**
* handle_bad_irq - handle spurious and unhandled irqs
* @irq: the interrupt number
@@ -30,15 +25,10 @@ static struct lock_class_key irq_desc_lock_class;
*
* Handles spurious and unhandled IRQ's. It also prints a debugmessage.
*/
-void
-handle_bad_irq(unsigned int irq, struct irq_desc *desc)
+void handle_bad_irq(unsigned int irq, struct irq_desc *desc)
{
print_irq_desc(irq, desc);
-#ifdef CONFIG_HAVE_DYN_ARRAY
- kstat_irqs_this_cpu(desc)++;
-#else
- kstat_irqs_this_cpu(irq)++;
-#endif
+ kstat_incr_irqs_this_cpu(irq, desc);
ack_bad_irq(irq);
}
@@ -59,80 +49,6 @@ handle_bad_irq(unsigned int irq, struct irq_desc *desc)
int nr_irqs = NR_IRQS;
EXPORT_SYMBOL_GPL(nr_irqs);
-#ifdef CONFIG_HAVE_DYN_ARRAY
-static struct irq_desc irq_desc_init = {
- .irq = -1U,
- .status = IRQ_DISABLED,
- .chip = &no_irq_chip,
- .handle_irq = handle_bad_irq,
- .depth = 1,
- .lock = __SPIN_LOCK_UNLOCKED(irq_desc_init.lock),
-#ifdef CONFIG_SMP
- .affinity = CPU_MASK_ALL
-#endif
-};
-
-
-static void init_one_irq_desc(struct irq_desc *desc)
-{
- memcpy(desc, &irq_desc_init, sizeof(struct irq_desc));
- lockdep_set_class(&desc->lock, &irq_desc_lock_class);
-}
-
-extern int after_bootmem;
-extern void *__alloc_bootmem_nopanic(unsigned long size,
- unsigned long align,
- unsigned long goal);
-
-static void init_kstat_irqs(struct irq_desc *desc, int nr_desc, int nr)
-{
- unsigned long bytes, total_bytes;
- char *ptr;
- int i;
- unsigned long phys;
-
- /* Compute how many bytes we need per irq and allocate them */
- bytes = nr * sizeof(unsigned int);
- total_bytes = bytes * nr_desc;
- if (after_bootmem)
- ptr = kzalloc(total_bytes, GFP_ATOMIC);
- else
- ptr = __alloc_bootmem_nopanic(total_bytes, PAGE_SIZE, 0);
-
- if (!ptr)
- panic(" can not allocate kstat_irqs\n");
-
- phys = __pa(ptr);
- printk(KERN_DEBUG "kstat_irqs ==> [%#lx - %#lx]\n", phys, phys + total_bytes);
-
- for (i = 0; i < nr_desc; i++) {
- desc[i].kstat_irqs = (unsigned int *)ptr;
- ptr += bytes;
- }
-}
-
-static void __init init_work(void *data)
-{
- struct dyn_array *da = data;
- int i;
- struct irq_desc *desc;
-
- desc = *da->name;
-
- for (i = 0; i < *da->nr; i++) {
- init_one_irq_desc(&desc[i]);
- desc[i].irq = i;
- }
-
- /* init kstat_irqs, nr_cpu_ids is ready already */
- init_kstat_irqs(desc, *da->nr, nr_cpu_ids);
-}
-
-struct irq_desc *irq_desc;
-DEFINE_DYN_ARRAY(irq_desc, sizeof(struct irq_desc), nr_irqs, PAGE_SIZE, init_work);
-
-#else
-
struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned_in_smp = {
[0 ... NR_IRQS-1] = {
.status = IRQ_DISABLED,
@@ -146,8 +62,6 @@ struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned_in_smp = {
}
};
-#endif
-
/*
* What should we do if we get a hw irq event on an illegal vector?
* Each architecture has to answer this themself.
@@ -258,11 +172,8 @@ unsigned int __do_IRQ(unsigned int irq)
struct irqaction *action;
unsigned int status;
-#ifdef CONFIG_HAVE_DYN_ARRAY
- kstat_irqs_this_cpu(desc)++;
-#else
- kstat_irqs_this_cpu(irq)++;
-#endif
+ kstat_incr_irqs_this_cpu(irq, desc);
+
if (CHECK_IRQ_PER_CPU(desc->status)) {
irqreturn_t action_ret;
@@ -351,23 +262,16 @@ out:
#ifdef CONFIG_TRACE_IRQFLAGS
+/*
+ * lockdep: we want to handle all irq_desc locks as a single lock-class:
+ */
+static struct lock_class_key irq_desc_lock_class;
+
void early_init_irq_lock_class(void)
{
-#ifndef CONFIG_HAVE_DYN_ARRAY
int i;
for (i = 0; i < nr_irqs; i++)
lockdep_set_class(&irq_desc[i].lock, &irq_desc_lock_class);
-#endif
}
#endif
-
-#ifdef CONFIG_HAVE_DYN_ARRAY
-unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
-{
- struct irq_desc *desc = irq_to_desc(irq);
- return desc->kstat_irqs[cpu];
-}
-#endif
-EXPORT_SYMBOL(kstat_irqs_cpu);
-
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