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sh: Tie sparseirq in to Kconfig.

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Now that the dependent patches are merged, we are ready to enable
sparseirq support. This simply adds the Kconfig option, and then converts
from the _cpu to the _node allocation routines to follow the upstream
sparseirq API changes.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2009-06-11 10:33:09 +03:00
parent 6a1555fdde
commit 54ff328b46
3 changed files with 18 additions and 11 deletions
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12
arch/sh/Kconfig
View File

@ -678,6 +678,18 @@ config GUSA_RB
LLSC, this should be more efficient than the other alternative of
disabling interrupts around the atomic sequence.
config SPARSE_IRQ
bool "Support sparse irq numbering"
depends on EXPERIMENTAL
help
This enables support for sparse irqs. This is useful in general
as most CPUs have a fairly sparse array of IRQ vectors, which
the irq_desc then maps directly on to. Systems with a high
number of off-chip IRQs will want to treat this as
experimental until they have been independently verified.
If you don't know what to do here, say N.
endmenu
menu "Boot options"

7
arch/sh/kernel/cpu/irq/ipr.c
View File

@ -21,6 +21,7 @@
#include <linux/module.h>
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/topology.h>
static inline struct ipr_desc *get_ipr_desc(unsigned int irq)
{
@ -59,21 +60,17 @@ void register_ipr_controller(struct ipr_desc *desc)
for (i = 0; i < desc->nr_irqs; i++) {
struct ipr_data *p = desc->ipr_data + i;
#ifdef CONFIG_SPARSE_IRQ
struct irq_desc *irq_desc;
#endif
BUG_ON(p->ipr_idx >= desc->nr_offsets);
BUG_ON(!desc->ipr_offsets[p->ipr_idx]);
#ifdef CONFIG_SPARSE_IRQ
irq_desc = irq_to_desc_alloc_cpu(p->irq, smp_processor_id());
irq_desc = irq_to_desc_alloc_node(p->irq, numa_node_id());
if (unlikely(!irq_desc)) {
printk(KERN_INFO "can not get irq_desc for %d\n",
p->irq);
continue;
}
#endif
disable_irq_nosync(p->irq);
set_irq_chip_and_handler_name(p->irq, &desc->chip,

10
drivers/sh/intc.c
View File

@ -24,6 +24,7 @@
#include <linux/sh_intc.h>
#include <linux/sysdev.h>
#include <linux/list.h>
#include <linux/topology.h>
#define _INTC_MK(fn, mode, addr_e, addr_d, width, shift) \
((shift) | ((width) << 5) | ((fn) << 9) | ((mode) << 13) | \
@ -671,7 +672,7 @@ unsigned int intc_evt2irq(unsigned int vector)
void __init register_intc_controller(struct intc_desc *desc)
{
unsigned int i, k, smp, cpu = smp_processor_id();
unsigned int i, k, smp;
struct intc_desc_int *d;
d = alloc_bootmem(sizeof(*d));
@ -771,19 +772,16 @@ void __init register_intc_controller(struct intc_desc *desc)
for (i = 0; i < desc->nr_vectors; i++) {
struct intc_vect *vect = desc->vectors + i;
unsigned int irq = evt2irq(vect->vect);
#ifdef CONFIG_SPARSE_IRQ
struct irq_desc *irq_desc;
#endif
if (!vect->enum_id)
continue;
#ifdef CONFIG_SPARSE_IRQ
irq_desc = irq_to_desc_alloc_cpu(irq, cpu);
irq_desc = irq_to_desc_alloc_node(irq, numa_node_id());
if (unlikely(!irq_desc)) {
printk(KERN_INFO "can not get irq_desc for %d\n", irq);
continue;
}
#endif
intc_register_irq(desc, d, vect->enum_id, irq);
}