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genirq: Move INPROGRESS, MASKED and DISABLED state flags to irq_data

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We really need these flags for some of the interrupt chips. Move it
from internal state to irq_data and provide proper accessors.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: David Daney <ddaney@caviumnetworks.com>
This commit is contained in:
Thomas Gleixner
2011-03-28 14:10:52 +02:00
parent c2d0c555c2
commit 32f4125ebf
9 changed files with 64 additions and 59 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel/irq/manage.c
+14 -16
View File
@@ -41,7 +41,7 @@ early_param("threadirqs", setup_forced_irqthreads);
void synchronize_irq(unsigned int irq)
{
struct irq_desc *desc = irq_to_desc(irq);
unsigned int state;
bool inprogress;
if (!desc)
return;
@@ -53,16 +53,16 @@ void synchronize_irq(unsigned int irq)
* Wait until we're out of the critical section. This might
* give the wrong answer due to the lack of memory barriers.
*/
while (desc->istate & IRQS_INPROGRESS)
while (irqd_irq_inprogress(&desc->irq_data))
cpu_relax();
/* Ok, that indicated we're done: double-check carefully. */
raw_spin_lock_irqsave(&desc->lock, flags);
state = desc->istate;
inprogress = irqd_irq_inprogress(&desc->irq_data);
raw_spin_unlock_irqrestore(&desc->lock, flags);
/* Oops, that failed? */
} while (state & IRQS_INPROGRESS);
} while (inprogress);
/*
* We made sure that no hardirq handler is running. Now verify
@@ -563,9 +563,9 @@ int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
flags &= IRQ_TYPE_SENSE_MASK;
if (chip->flags & IRQCHIP_SET_TYPE_MASKED) {
if (!(desc->istate & IRQS_MASKED))
if (!irqd_irq_masked(&desc->irq_data))
mask_irq(desc);
if (!(desc->istate & IRQS_DISABLED))
if (!irqd_irq_disabled(&desc->irq_data))
unmask = 1;
}
@@ -663,7 +663,7 @@ again:
* irq_wake_thread(). See the comment there which explains the
* serialization.
*/
if (unlikely(desc->istate & IRQS_INPROGRESS)) {
if (unlikely(irqd_irq_inprogress(&desc->irq_data))) {
raw_spin_unlock_irq(&desc->lock);
chip_bus_sync_unlock(desc);
cpu_relax();
@@ -680,12 +680,10 @@ again:
desc->threads_oneshot &= ~action->thread_mask;
if (!desc->threads_oneshot && !(desc->istate & IRQS_DISABLED) &&
(desc->istate & IRQS_MASKED)) {
irq_compat_clr_masked(desc);
desc->istate &= ~IRQS_MASKED;
desc->irq_data.chip->irq_unmask(&desc->irq_data);
}
if (!desc->threads_oneshot && !irqd_irq_disabled(&desc->irq_data) &&
irqd_irq_masked(&desc->irq_data))
unmask_irq(desc);
out_unlock:
raw_spin_unlock_irq(&desc->lock);
chip_bus_sync_unlock(desc);
@@ -779,7 +777,7 @@ static int irq_thread(void *data)
atomic_inc(&desc->threads_active);
raw_spin_lock_irq(&desc->lock);
if (unlikely(desc->istate & IRQS_DISABLED)) {
if (unlikely(irqd_irq_disabled(&desc->irq_data))) {
/*
* CHECKME: We might need a dedicated
* IRQ_THREAD_PENDING flag here, which
@@ -997,8 +995,8 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
}
desc->istate &= ~(IRQS_AUTODETECT | IRQS_SPURIOUS_DISABLED | \
IRQS_INPROGRESS | IRQS_ONESHOT | \
IRQS_WAITING);
IRQS_ONESHOT | IRQS_WAITING);
irqd_clear(&desc->irq_data, IRQD_IRQ_INPROGRESS);
if (new->flags & IRQF_PERCPU) {
irqd_set(&desc->irq_data, IRQD_PER_CPU);