[POWERPC] MPIC: Minor optimization of ipi handler
Optimize MPIC IPIs, by passing in the IPI number as the argument to the handler, since all we did was translate it back based on which mpic the interrupt came though on (and that was always the primary mpic). Signed-off-by: Olof Johansson <olof@lixom.net> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
parent
2c0b713f70
commit
194046a17e
|
@ -612,12 +612,11 @@ static inline void mpic_eoi(struct mpic *mpic)
|
||||||
}
|
}
|
||||||
|
|
||||||
#ifdef CONFIG_SMP
|
#ifdef CONFIG_SMP
|
||||||
static irqreturn_t mpic_ipi_action(int irq, void *dev_id)
|
static irqreturn_t mpic_ipi_action(int irq, void *data)
|
||||||
{
|
{
|
||||||
struct mpic *mpic;
|
long ipi = (long)data;
|
||||||
|
|
||||||
mpic = mpic_find(irq, NULL);
|
smp_message_recv(ipi);
|
||||||
smp_message_recv(mpic_irq_to_hw(irq) - mpic->ipi_vecs[0]);
|
|
||||||
|
|
||||||
return IRQ_HANDLED;
|
return IRQ_HANDLED;
|
||||||
}
|
}
|
||||||
|
@ -1457,7 +1456,7 @@ unsigned int mpic_get_irq(void)
|
||||||
void mpic_request_ipis(void)
|
void mpic_request_ipis(void)
|
||||||
{
|
{
|
||||||
struct mpic *mpic = mpic_primary;
|
struct mpic *mpic = mpic_primary;
|
||||||
int i, err;
|
long i, err;
|
||||||
static char *ipi_names[] = {
|
static char *ipi_names[] = {
|
||||||
"IPI0 (call function)",
|
"IPI0 (call function)",
|
||||||
"IPI1 (reschedule)",
|
"IPI1 (reschedule)",
|
||||||
|
@ -1472,14 +1471,14 @@ void mpic_request_ipis(void)
|
||||||
unsigned int vipi = irq_create_mapping(mpic->irqhost,
|
unsigned int vipi = irq_create_mapping(mpic->irqhost,
|
||||||
mpic->ipi_vecs[0] + i);
|
mpic->ipi_vecs[0] + i);
|
||||||
if (vipi == NO_IRQ) {
|
if (vipi == NO_IRQ) {
|
||||||
printk(KERN_ERR "Failed to map IPI %d\n", i);
|
printk(KERN_ERR "Failed to map IPI %ld\n", i);
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
err = request_irq(vipi, mpic_ipi_action,
|
err = request_irq(vipi, mpic_ipi_action,
|
||||||
IRQF_DISABLED|IRQF_PERCPU,
|
IRQF_DISABLED|IRQF_PERCPU,
|
||||||
ipi_names[i], mpic);
|
ipi_names[i], (void *)i);
|
||||||
if (err) {
|
if (err) {
|
||||||
printk(KERN_ERR "Request of irq %d for IPI %d failed\n",
|
printk(KERN_ERR "Request of irq %d for IPI %ld failed\n",
|
||||||
vipi, i);
|
vipi, i);
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in New Issue