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genirq: revert dynarray

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Revert the dynarray changes. They need more thought and polishing.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2008-10-15 15:27:23 +02:00 • committed by Ingo Molnar
parent ee32c97322
commit d6c88a507e
19 changed files with 103 additions and 496 deletions
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114
kernel/irq/handle.c
View file

@ -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);