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powerpc/mpic: Use new smp_request_message_ipi 

MPIC has 4 ipis, so it can use the new smp_request_message_ipi to
reduce pathlength when receiving an ipi.

This has the side effect of using the common ipi names, and also
continuing to try request the remaining messages when one fails.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Milton Miller 2008-10-10 01:56:50 +00:00 committed by Paul Mackerras
parent 25ddd738c2
commit 78608dd32c
1 changed files with 4 additions and 28 deletions
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32
arch/powerpc/sysdev/mpic.c
View File

@ -661,17 +661,6 @@ static inline void mpic_eoi(struct mpic *mpic)
(void)mpic_cpu_read(MPIC_INFO(CPU_WHOAMI));
}
#ifdef CONFIG_SMP
static irqreturn_t mpic_ipi_action(int irq, void *data)
{
long ipi = (long)data;
smp_message_recv(ipi);
return IRQ_HANDLED;
}
#endif /* CONFIG_SMP */
/*
* Linux descriptor level callbacks
*/
@ -1543,13 +1532,7 @@ unsigned int mpic_get_mcirq(void)
void mpic_request_ipis(void)
{
struct mpic *mpic = mpic_primary;
long i, err;
static char *ipi_names[] = {
"IPI0 (call function)",
"IPI1 (reschedule)",
"IPI2 (call function single)",
"IPI3 (debugger break)",
};
int i;
BUG_ON(mpic == NULL);
printk(KERN_INFO "mpic: requesting IPIs ... \n");
@ -1558,17 +1541,10 @@ void mpic_request_ipis(void)
unsigned int vipi = irq_create_mapping(mpic->irqhost,
mpic->ipi_vecs[0] + i);
if (vipi == NO_IRQ) {
printk(KERN_ERR "Failed to map IPI %ld\n", i);
break;
}
err = request_irq(vipi, mpic_ipi_action,
IRQF_DISABLED|IRQF_PERCPU,
ipi_names[i], (void *)i);
if (err) {
printk(KERN_ERR "Request of irq %d for IPI %ld failed\n",
vipi, i);
break;
printk(KERN_ERR "Failed to map %s\n", smp_ipi_name[i]);
continue;
}
smp_request_message_ipi(vipi, i);
}
}