diff options
| -rw-r--r-- | arch/sh/Kconfig | 12 | ||||
| -rw-r--r-- | arch/sh/kernel/cpu/irq/ipr.c | 7 | ||||
| -rw-r--r-- | drivers/sh/intc.c | 10 |
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); } |