From 194046a17ee2600908541bc9cd5d6d421805f132 Mon Sep 17 00:00:00 2001 From: Olof Johansson Date: Sat, 20 Oct 2007 09:49:50 +1000 Subject: [PATCH] [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 Acked-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras --- arch/powerpc/sysdev/mpic.c | 15 +++++++-------- 1 file 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; } -- 2.7.4