diff options
Diffstat (limited to 'arch/x86/kernel/io_apic_32.c')
| -rw-r--r-- | arch/x86/kernel/io_apic_32.c | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/arch/x86/kernel/io_apic_32.c b/arch/x86/kernel/io_apic_32.c index e710289f673..d382990244f 100644 --- a/arch/x86/kernel/io_apic_32.c +++ b/arch/x86/kernel/io_apic_32.c @@ -70,6 +70,7 @@ int timer_through_8259 __initdata; */ int sis_apic_bug = -1; +int first_free_entry = NR_IRQS; /* * # of IRQ routing registers */ @@ -100,6 +101,8 @@ static int disable_timer_pin_1 __initdata; #define MAX_PLUS_SHARED_IRQS NR_IRQS #define PIN_MAP_SIZE (MAX_PLUS_SHARED_IRQS + NR_IRQS) +int pin_map_size = PIN_MAP_SIZE; + /* * This is performance-critical, we want to do it O(1) * @@ -213,7 +216,6 @@ static void ioapic_mask_entry(int apic, int pin) */ static void add_pin_to_irq(unsigned int irq, int apic, int pin) { - static int first_free_entry = NR_IRQS; struct irq_pin_list *entry = irq_2_pin + irq; while (entry->next) @@ -222,7 +224,7 @@ static void add_pin_to_irq(unsigned int irq, int apic, int pin) if (entry->pin != -1) { entry->next = first_free_entry; entry = irq_2_pin + entry->next; - if (++first_free_entry >= PIN_MAP_SIZE) + if (++first_free_entry >= pin_map_size) panic("io_apic.c: whoops"); } entry->apic = apic; @@ -457,7 +459,7 @@ static inline void rotate_irqs_among_cpus(unsigned long useful_load_threshold) int i, j; for_each_online_cpu(i) { - for (j = 0; j < NR_IRQS; j++) { + for (j = 0; j < nr_irqs; j++) { if (!irq_desc[j].action) continue; /* Is it a significant load ? */ @@ -492,7 +494,7 @@ static void do_irq_balance(void) if (!cpu_online(i)) continue; package_index = CPU_TO_PACKAGEINDEX(i); - for (j = 0; j < NR_IRQS; j++) { + for (j = 0; j < nr_irqs; j++) { unsigned long value_now, delta; /* Is this an active IRQ or balancing disabled ? */ if (!irq_desc[j].action || irq_balancing_disabled(j)) @@ -587,7 +589,7 @@ tryanotherirq: */ move_this_load = 0; selected_irq = -1; - for (j = 0; j < NR_IRQS; j++) { + for (j = 0; j < nr_irqs; j++) { /* Is this an active IRQ? */ if (!irq_desc[j].action) continue; @@ -664,7 +666,7 @@ static int balanced_irq(void *unused) long time_remaining = balanced_irq_interval; /* push everything to CPU 0 to give us a starting point. */ - for (i = 0 ; i < NR_IRQS ; i++) { + for (i = 0 ; i < nr_irqs ; i++) { irq_desc[i].pending_mask = cpumask_of_cpu(0); set_pending_irq(i, cpumask_of_cpu(0)); } @@ -712,8 +714,8 @@ static int __init balanced_irq_init(void) physical_balance = 1; for_each_online_cpu(i) { - irq_cpu_data[i].irq_delta = kzalloc(sizeof(unsigned long) * NR_IRQS, GFP_KERNEL); - irq_cpu_data[i].last_irq = kzalloc(sizeof(unsigned long) * NR_IRQS, GFP_KERNEL); + irq_cpu_data[i].irq_delta = kzalloc(sizeof(unsigned long) * nr_irqs, GFP_KERNEL); + irq_cpu_data[i].last_irq = kzalloc(sizeof(unsigned long) * nr_irqs, GFP_KERNEL); if (irq_cpu_data[i].irq_delta == NULL || irq_cpu_data[i].last_irq == NULL) { printk(KERN_ERR "balanced_irq_init: out of memory"); goto failed; @@ -1441,7 +1443,7 @@ __apicdebuginit(void) print_IO_APIC(void) } } printk(KERN_DEBUG "IRQ to pin mappings:\n"); - for (i = 0; i < NR_IRQS; i++) { + for (i = 0; i < nr_irqs; i++) { struct irq_pin_list *entry = irq_2_pin + i; if (entry->pin < 0) continue; @@ -1621,7 +1623,7 @@ static void __init enable_IO_APIC(void) int i, apic; unsigned long flags; - for (i = 0; i < PIN_MAP_SIZE; i++) { + for (i = 0; i < pin_map_size; i++) { irq_2_pin[i].pin = -1; irq_2_pin[i].next = 0; } @@ -2005,7 +2007,7 @@ 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 (irq = 0; irq < NR_IRQS ; irq++) { + for (irq = 0; irq < nr_irqs ; irq++) { if (IO_APIC_IRQ(irq) && !irq_vector[irq]) { /* * Hmm.. We don't have an entry for this, @@ -2449,7 +2451,7 @@ int create_irq(void) irq = -ENOSPC; spin_lock_irqsave(&vector_lock, flags); - for (new = (NR_IRQS - 1); new >= 0; new--) { + for (new = (nr_irqs - 1); new >= 0; new--) { if (platform_legacy_irq(new)) continue; if (irq_vector[new] != 0) |