===================================================================
@@ -52,6 +52,7 @@ config SPARC64
select PERF_USE_VMALLOC
select HAVE_GENERIC_HARDIRQS
select GENERIC_HARDIRQS_NO_DEPRECATED
+ select IRQ_PREFLOW_FASTEOI
config ARCH_DEFCONFIG
string
===================================================================
@@ -344,10 +344,6 @@ static void sun4u_irq_disable(struct irq
static void sun4u_irq_eoi(struct irq_data *data)
{
struct irq_handler_data *handler_data = data->handler_data;
- struct irq_desc *desc = irq_desc + data->irq;
-
- if (unlikely(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS)))
- return;
if (likely(handler_data))
upa_writeq(ICLR_IDLE, handler_data->iclr);
@@ -402,12 +398,8 @@ static void sun4v_irq_disable(struct irq
static void sun4v_irq_eoi(struct irq_data *data)
{
unsigned int ino = irq_table[data->irq].dev_ino;
- struct irq_desc *desc = irq_desc + data->irq;
int err;
- if (unlikely(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS)))
- return;
-
err = sun4v_intr_setstate(ino, HV_INTR_STATE_IDLE);
if (err != HV_EOK)
printk(KERN_ERR "sun4v_intr_setstate(%x): "
@@ -481,13 +473,9 @@ static void sun4v_virq_disable(struct ir
static void sun4v_virq_eoi(struct irq_data *data)
{
- struct irq_desc *desc = irq_desc + data->irq;
unsigned long dev_handle, dev_ino;
int err;
- if (unlikely(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS)))
- return;
-
dev_handle = irq_table[data->irq].dev_handle;
dev_ino = irq_table[data->irq].dev_ino;
@@ -505,6 +493,7 @@ static struct irq_chip sun4u_irq = {
.irq_disable = sun4u_irq_disable,
.irq_eoi = sun4u_irq_eoi,
.irq_set_affinity = sun4u_set_affinity,
+ .flags = IRQCHIP_EOI_IF_HANDLED,
};
static struct irq_chip sun4v_irq = {
@@ -513,6 +502,7 @@ static struct irq_chip sun4v_irq = {
.irq_disable = sun4v_irq_disable,
.irq_eoi = sun4v_irq_eoi,
.irq_set_affinity = sun4v_set_affinity,
+ .flags = IRQCHIP_EOI_IF_HANDLED,
};
static struct irq_chip sun4v_virq = {
@@ -521,16 +511,15 @@ static struct irq_chip sun4v_virq = {
.irq_disable = sun4v_virq_disable,
.irq_eoi = sun4v_virq_eoi,
.irq_set_affinity = sun4v_virt_set_affinity,
+ .flags = IRQCHIP_EOI_IF_HANDLED,
};
-static void pre_flow_handler(unsigned int irq, struct irq_desc *desc)
+static void pre_flow_handler(struct irq_data *d)
{
- struct irq_handler_data *handler_data = get_irq_data(irq);
- unsigned int ino = irq_table[irq].dev_ino;
+ struct irq_handler_data *handler_data = irq_data_get_irq_handler_data(d);
+ unsigned int ino = irq_table[d->irq].dev_ino;
handler_data->pre_handler(ino, handler_data->arg1, handler_data->arg2);
-
- handle_fasteoi_irq(irq, desc);
}
void irq_install_pre_handler(int irq,
@@ -538,13 +527,12 @@ void irq_install_pre_handler(int irq,
void *arg1, void *arg2)
{
struct irq_handler_data *handler_data = get_irq_data(irq);
- struct irq_desc *desc = irq_desc + irq;
handler_data->pre_handler = func;
handler_data->arg1 = arg1;
handler_data->arg2 = arg2;
- desc->handle_irq = pre_flow_handler;
+ __irq_set_preflow_handler(virt_irq, pre_flow_handler);
}
unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap)
@@ -734,7 +722,6 @@ void __irq_entry handler_irq(int pil, st
orig_sp = set_hardirq_stack();
while (bucket_pa) {
- struct irq_desc *desc;
unsigned long next_pa;
unsigned int irq;
@@ -742,10 +729,7 @@ void __irq_entry handler_irq(int pil, st
irq = bucket_get_irq(bucket_pa);
bucket_clear_chain_pa(bucket_pa);
- desc = irq_desc + irq;
-
- if (!(desc->status & IRQ_DISABLED))
- desc->handle_irq(irq, desc);
+ generic_handle_irq(irq);
bucket_pa = next_pa;
}
Make use of the new features in genirq: 1) Set the chip flag IRCHIP_EOI_IF_HANDLED, which ensures in the core code that irq_eoi() is only called when the interrupt was handled. That removes the extra status check in the callback. 2) Use the preflow handler, which is called from the fasteoi core code before the device handler. That avoids another status check and the open coded handler redirection. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- arch/sparc/Kconfig | 1 + arch/sparc/kernel/irq_64.c | 32 ++++++++------------------------ 2 files changed, 9 insertions(+), 24 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html