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x86: put timer_rand_state pointer into irq_desc

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irq_timer_state[] is a NR_IRQS sized array that is a side-by array to
the real irq_desc[] array.

Integrate that field into the (now dynamic) irq_desc dynamic array and
save some RAM.

v2: keep the old way to support arch not support irq_desc

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Yinghai Lu
2008-08-19 20:50:08 -07:00
committed by Ingo Molnar
parent e5a53714ac
commit 3060d6fe28
2 changed files with 63 additions and 5 deletions
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2
include/linux/irq.h
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@@ -127,6 +127,7 @@ struct irq_chip {
const char *typename;
};
struct timer_rand_state;
/**
* struct irq_desc - interrupt descriptor
*
@@ -155,6 +156,7 @@ struct irq_desc {
unsigned int irq;
#ifdef CONFIG_HAVE_SPARSE_IRQ
struct irq_desc *next;
struct timer_rand_state *timer_rand_state;
#endif
irq_flow_handler_t handle_irq;
struct irq_chip *chip;