irq.h: remove padding from irq_desc on 64bits

Impact: reduce struct irq_desc size

struct irq_desc: reorder to remove padding on 64bits

shrinks irq_desc to 128 bytes which saves data space & cache lines

On a generic x86_64/SMP build this reduces the reported data size by
64k.

Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Richard Kennedy 2008-11-23 14:34:43 +00:00 коммит произвёл Ingo Molnar
Родитель ed313489ba
Коммит e262a7ba31
1 изменённых файлов: 2 добавлений и 2 удалений

Просмотреть файл

@ -142,8 +142,8 @@ struct irq_chip {
* @depth: disable-depth, for nested irq_disable() calls * @depth: disable-depth, for nested irq_disable() calls
* @wake_depth: enable depth, for multiple set_irq_wake() callers * @wake_depth: enable depth, for multiple set_irq_wake() callers
* @irq_count: stats field to detect stalled irqs * @irq_count: stats field to detect stalled irqs
* @irqs_unhandled: stats field for spurious unhandled interrupts
* @last_unhandled: aging timer for unhandled count * @last_unhandled: aging timer for unhandled count
* @irqs_unhandled: stats field for spurious unhandled interrupts
* @lock: locking for SMP * @lock: locking for SMP
* @affinity: IRQ affinity on SMP * @affinity: IRQ affinity on SMP
* @cpu: cpu index useful for balancing * @cpu: cpu index useful for balancing
@ -165,8 +165,8 @@ struct irq_desc {
unsigned int depth; /* nested irq disables */ unsigned int depth; /* nested irq disables */
unsigned int wake_depth; /* nested wake enables */ unsigned int wake_depth; /* nested wake enables */
unsigned int irq_count; /* For detecting broken IRQs */ unsigned int irq_count; /* For detecting broken IRQs */
unsigned int irqs_unhandled;
unsigned long last_unhandled; /* Aging timer for unhandled count */ unsigned long last_unhandled; /* Aging timer for unhandled count */
unsigned int irqs_unhandled;
spinlock_t lock; spinlock_t lock;
#ifdef CONFIG_SMP #ifdef CONFIG_SMP
cpumask_t affinity; cpumask_t affinity;