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Commit 2977fb3f authored by Cyrill Gorcunov's avatar Cyrill Gorcunov Committed by Ingo Molnar
Browse files

x86, ioapic: Introduce for_each_irq_pin() helper 



This allow us to save a few lines of code.

Signed-off-by: default avatarCyrill Gorcunov <gorcunov@openvz.org>
Cc: yinghai@kernel.org
LKML-Reference: <20090801075435.597863129@openvz.org>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 25f6e89b

arch/x86/kernel/apic/io_apic.c

+15 −28
Original line number Diff line number Diff line
@@ -66,6 +66,8 @@ 
#include <asm/apic.h>



#define __apicdebuginit(type) static type __init

#define for_each_irq_pin(entry, head) \

	for (entry = head; entry; entry = entry->next)



/*

 *      Is the SiS APIC rmw bug present ?
@@ -410,7 +412,7 @@ static bool io_apic_level_ack_pending(struct irq_cfg *cfg) 
	unsigned long flags;



	spin_lock_irqsave(&ioapic_lock, flags);

	for (entry = cfg->irq_2_pin; entry != NULL; entry = entry->next) {

	for_each_irq_pin(entry, cfg->irq_2_pin) {

		unsigned int reg;

		int pin;
@@ -490,22 +492,21 @@ static void ioapic_mask_entry(int apic, int pin) 
 */

static void add_pin_to_irq_node(struct irq_cfg *cfg, int node, int apic, int pin)

{

	struct irq_pin_list **entryp, *entry;

	struct irq_pin_list **last, *entry;



	for (entryp = &cfg->irq_2_pin;

	     *entryp != NULL;

	     entryp = &(*entryp)->next) {

		entry = *entryp;

		/* not again, please */

	/* don't allow duplicates */

	last = &cfg->irq_2_pin;

	for_each_irq_pin(entry, cfg->irq_2_pin) {

		if (entry->apic == apic && entry->pin == pin)

			return;

		last = &entry->next;

	}



	entry = get_one_free_irq_2_pin(node);

	entry->apic = apic;

	entry->pin = pin;



	*entryp = entry;

	*last = entry;

}



/*
@@ -517,7 +518,7 @@ static void __init replace_pin_at_irq_node(struct irq_cfg *cfg, int node, 
{

	struct irq_pin_list *entry;



	for (entry = cfg->irq_2_pin; entry != NULL; entry = entry->next) {

	for_each_irq_pin(entry, cfg->irq_2_pin) {

		if (entry->apic == oldapic && entry->pin == oldpin) {

			entry->apic = newapic;

			entry->pin = newpin;
@@ -537,7 +538,7 @@ static void io_apic_modify_irq(struct irq_cfg *cfg, 
	int pin;

	struct irq_pin_list *entry;



	for (entry = cfg->irq_2_pin; entry != NULL; entry = entry->next) {

	for_each_irq_pin(entry, cfg->irq_2_pin) {

		unsigned int reg;

		pin = entry->pin;

		reg = io_apic_read(entry->apic, 0x10 + pin * 2);
@@ -1669,12 +1670,8 @@ __apicdebuginit(void) print_IO_APIC(void) 
		if (!entry)

			continue;

		printk(KERN_DEBUG "IRQ%d ", irq);

		for (;;) {

		for_each_irq_pin(entry, cfg->irq_2_pin)

			printk("-> %d:%d", entry->apic, entry->pin);

			if (!entry->next)

				break;

			entry = entry->next;

		}

		printk("\n");

	}
@@ -2227,7 +2224,7 @@ static void __target_IO_APIC_irq(unsigned int irq, unsigned int dest, struct irq 
	struct irq_pin_list *entry;

	u8 vector = cfg->vector;



	for (entry = cfg->irq_2_pin; entry != NULL; entry = entry->next) {

	for_each_irq_pin(entry, cfg->irq_2_pin) {

		unsigned int reg;



		apic = entry->apic;
@@ -2556,20 +2553,10 @@ static void ack_apic_level(unsigned int irq) 
#ifdef CONFIG_INTR_REMAP

static void __eoi_ioapic_irq(unsigned int irq, struct irq_cfg *cfg)

{

	int apic, pin;

	struct irq_pin_list *entry;



	entry = cfg->irq_2_pin;

	for (;;) {



		if (!entry)

			break;



		apic = entry->apic;

		pin = entry->pin;

		io_apic_eoi(apic, pin);

		entry = entry->next;

	}

	for_each_irq_pin(entry, cfg->irq_2_pin)

		io_apic_eoi(entry->apic, entry->pin);

}



static void