Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=194046a17ee2600908541bc9cd5d6d421805f132
Commit: 194046a17ee2600908541bc9cd5d6d421805f132
Parent: 2c0b713f70ecccaf4f535caf602f41350a9f484a
Author: Olof Johansson <[EMAIL PROTECTED]>
AuthorDate: Sat Oct 20 09:49:50 2007 +1000
Committer: Paul Mackerras <[EMAIL PROTECTED]>
CommitDate: Thu Dec 20 16:11:46 2007 +1100
[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 <[EMAIL PROTECTED]>
Acked-by: Benjamin Herrenschmidt <[EMAIL PROTECTED]>
Signed-off-by: Paul Mackerras <[EMAIL PROTECTED]>
---
arch/powerpc/sysdev/mpic.c | 15 +++++++--------
1 files changed, 7 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index e479388..116173a 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -612,12 +612,11 @@ static inline void mpic_eoi(struct mpic *mpic)
}
#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(mpic_irq_to_hw(irq) - mpic->ipi_vecs[0]);
+ smp_message_recv(ipi);
return IRQ_HANDLED;
}
@@ -1457,7 +1456,7 @@ unsigned int mpic_get_irq(void)
void mpic_request_ipis(void)
{
struct mpic *mpic = mpic_primary;
- int i, err;
+ long i, err;
static char *ipi_names[] = {
"IPI0 (call function)",
"IPI1 (reschedule)",
@@ -1472,14 +1471,14 @@ 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 %d\n", i);
+ 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], mpic);
+ ipi_names[i], (void *)i);
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);
break;
}
-
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