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authorPaul Mundt <lethal@linux-sh.org>2009-06-11 10:33:09 +0300
committerPaul Mundt <lethal@linux-sh.org>2009-06-11 10:33:09 +0300
commit54ff328b46e58568c4b3350c2fa3223ef862e5a4 (patch)
tree93a39c2dffa2490fd62f6441acba5538abf56b03
parent6a1555fdde407dad23b8a119cf5feeb7c6466de9 (diff)
sh: Tie sparseirq in to Kconfig.
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>
-rw-r--r--arch/sh/Kconfig12
-rw-r--r--arch/sh/kernel/cpu/irq/ipr.c7
-rw-r--r--drivers/sh/intc.c10
3 files changed, 18 insertions, 11 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index b5629cdc37a..586cd045e2d 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -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"
diff --git a/arch/sh/kernel/cpu/irq/ipr.c b/arch/sh/kernel/cpu/irq/ipr.c
index 6ad40dbad88..808d99a48ef 100644
--- a/arch/sh/kernel/cpu/irq/ipr.c
+++ b/arch/sh/kernel/cpu/irq/ipr.c
@@ -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,
diff --git a/drivers/sh/intc.c b/drivers/sh/intc.c
index caf06569404..d687a9b93d0 100644
--- a/drivers/sh/intc.c
+++ b/drivers/sh/intc.c
@@ -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);
}