From ad9f43340f48c5f7a0a5ef7656986e23d06bf996 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 30 Sep 2010 11:26:43 +0200 Subject: [PATCH] x86: Use sane enumeration Instead of looping through all interrupts, use the bitmap lookup to find the next. Signed-off-by: Thomas Gleixner Reviewed-by: Ingo Molnar --- arch/x86/kernel/apic/io_apic.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 5193f201b916..057b0e13d1c3 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -1160,7 +1160,6 @@ void __setup_vector_irq(int cpu) /* Initialize vector_irq on a new cpu */ int irq, vector; struct irq_cfg *cfg; - struct irq_desc *desc; /* * vector_lock will make sure that we don't run into irq vector @@ -1169,9 +1168,10 @@ void __setup_vector_irq(int cpu) */ raw_spin_lock(&vector_lock); /* Mark the inuse vectors */ - for_each_irq_desc(irq, desc) { - cfg = get_irq_desc_chip_data(desc); - + for_each_active_irq(irq) { + cfg = get_irq_chip_data(irq); + if (!cfg) + continue; /* * If it is a legacy IRQ handled by the legacy PIC, this cpu * will be part of the irq_cfg's domain. @@ -1516,7 +1516,6 @@ __apicdebuginit(void) print_IO_APIC(void) union IO_APIC_reg_03 reg_03; unsigned long flags; struct irq_cfg *cfg; - struct irq_desc *desc; unsigned int irq; printk(KERN_DEBUG "number of MP IRQ sources: %d.\n", mp_irq_entries); @@ -1603,10 +1602,10 @@ __apicdebuginit(void) print_IO_APIC(void) } } printk(KERN_DEBUG "IRQ to pin mappings:\n"); - for_each_irq_desc(irq, desc) { + for_each_active_irq(irq) { struct irq_pin_list *entry; - cfg = get_irq_desc_chip_data(desc); + cfg = get_irq_chip_data(irq); if (!cfg) continue; entry = cfg->irq_2_pin; @@ -2574,9 +2573,8 @@ static struct irq_chip ir_ioapic_chip __read_mostly = { static inline void init_IO_APIC_traps(void) { - int irq; - struct irq_desc *desc; struct irq_cfg *cfg; + unsigned int irq; /* * NOTE! The local APIC isn't very good at handling @@ -2589,8 +2587,8 @@ static inline void init_IO_APIC_traps(void) * Also, we've got to be careful not to trash gate * 0x80, because int 0x80 is hm, kind of importantish. ;) */ - for_each_irq_desc(irq, desc) { - cfg = get_irq_desc_chip_data(desc); + for_each_active_irq(irq) { + cfg = get_irq_chip_data(irq); if (IO_APIC_IRQ(irq) && cfg && !cfg->vector) { /* * Hmm.. We don't have an entry for this, @@ -2601,7 +2599,7 @@ static inline void init_IO_APIC_traps(void) legacy_pic->make_irq(irq); else /* Strange. Oh, well.. */ - desc->chip = &no_irq_chip; + set_irq_chip(irq, &no_irq_chip); } } } -- 2.45.2