From: Sepherosa Ziehau <sephe@dragonflybsd.org>
Date: Sun, 30 Oct 2011 13:50:45 +0000 (+0800)
Subject: ioapic_abi/x86_64: Optimize the GSI search a little bit
X-Git-Tag: v3.0.0~773
X-Git-Url: https://gitweb.dragonflybsd.org/dragonfly.git/commitdiff_plain/dc844205199e9b290c8298fcc826b3c770542be1

ioapic_abi/x86_64: Optimize the GSI search a little bit

Use the recorded max line based IRQ instead of scanning the whole
IRQ map array
---

diff --git a/sys/platform/pc64/apic/ioapic_abi.c b/sys/platform/pc64/apic/ioapic_abi.c
index 356d65299f..850df60068 100644
--- a/sys/platform/pc64/apic/ioapic_abi.c
+++ b/sys/platform/pc64/apic/ioapic_abi.c
@@ -757,7 +757,7 @@ ioapic_abi_find_gsi(int gsi, enum intr_trigger trig, enum intr_polarity pola)
 	KKASSERT(trig == INTR_TRIGGER_EDGE || trig == INTR_TRIGGER_LEVEL);
 	KKASSERT(pola == INTR_POLARITY_HIGH || pola == INTR_POLARITY_LOW);
 
-	for (irq = 0; irq < IOAPIC_HWI_VECTORS; ++irq) {
+	for (irq = 0; irq < ioapic_abi_line_irq_max; ++irq) {
 		const struct ioapic_irqmap *map = &ioapic_irqmaps[irq];
 
 		if (map->im_gsi == gsi) {