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genirq: Move IRQ_PENDING flag to core

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Keep status in sync until all users are fixed.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2011-02-08 12:17:57 +01:00
parent c1594b77e4
commit 2a0d6fb335
11 changed files with 40 additions and 17 deletions
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2
include/linux/irq.h
View file

@ -56,9 +56,9 @@ typedef void (*irq_flow_handler_t)(unsigned int irq,
#define IRQ_REPLAY 0x00000200 /* DEPRECATED */
#define IRQ_WAITING 0x00000400 /* DEPRECATED */
#define IRQ_DISABLED 0x00000800 /* DEPRECATED */
#define IRQ_PENDING 0x00001000 /* DEPRECATED */
#endif
#define IRQ_PENDING 0x00001000 /* IRQ pending - replay on enable */
#define IRQ_LEVEL 0x00004000 /* IRQ level triggered */
#define IRQ_MASKED 0x00008000 /* IRQ masked - shouldn't be seen again */

6
kernel/irq/autoprobe.c
View file

@ -76,8 +76,10 @@ unsigned long probe_irq_on(void)
raw_spin_lock_irq(&desc->lock);
if (!desc->action && !(desc->status & IRQ_NOPROBE)) {
desc->istate |= IRQS_AUTODETECT | IRQS_WAITING;
if (irq_startup(desc))
desc->status |= IRQ_PENDING;
if (irq_startup(desc)) {
irq_compat_set_pending(desc);
desc->istate |= IRQS_PENDING;
}
}
raw_spin_unlock_irq(&desc->lock);
}

10
kernel/irq/chip.c
View file

@ -518,7 +518,8 @@ handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc)
* then mask it and get out of here:
*/
if (unlikely(!desc->action || (desc->istate & IRQS_DISABLED))) {
desc->status |= IRQ_PENDING;
irq_compat_set_pending(desc);
desc->istate |= IRQS_PENDING;
mask_irq(desc);
goto out;
}
@ -558,7 +559,8 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc)
if (unlikely((desc->istate & (IRQS_DISABLED | IRQS_INPROGRESS) ||
!desc->action))) {
if (!irq_check_poll(desc)) {
desc->status |= IRQ_PENDING;
irq_compat_set_pending(desc);
desc->istate |= IRQS_PENDING;
mask_ack_irq(desc);
goto out_unlock;
}
@ -579,7 +581,7 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc)
* one, we could have masked the irq.
* Renable it, if it was not disabled in meantime.
*/
if (unlikely(desc->status & IRQ_PENDING)) {
if (unlikely(desc->istate & IRQS_PENDING)) {
if (!(desc->istate & IRQS_DISABLED) &&
(desc->status & IRQ_MASKED))
unmask_irq(desc);
@ -587,7 +589,7 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc)
handle_irq_event(desc);
} while ((desc->status & IRQ_PENDING) &&
} while ((desc->istate & IRQS_PENDING) &&
!(desc->istate & IRQS_DISABLED));
out_unlock:

12
kernel/irq/compat.h
View file

@ -15,15 +15,25 @@ static inline void irq_compat_set_disabled(struct irq_desc *desc)
{
desc->status |= IRQ_DISABLED;
}
static inline void irq_compat_clr_disabled(struct irq_desc *desc)
{
desc->status &= ~IRQ_DISABLED;
}
static inline void irq_compat_set_pending(struct irq_desc *desc)
{
desc->status |= IRQ_PENDING;
}
static inline void irq_compat_clr_pending(struct irq_desc *desc)
{
desc->status &= ~IRQ_PENDING;
}
#else
static inline void irq_compat_set_progress(struct irq_desc *desc) { }
static inline void irq_compat_clr_progress(struct irq_desc *desc) { }
static inline void irq_compat_set_disabled(struct irq_desc *desc) { }
static inline void irq_compat_clr_disabled(struct irq_desc *desc) { }
static inline void irq_compat_set_pending(struct irq_desc *desc) { }
static inline void irq_compat_clr_pending(struct irq_desc *desc) { }
#endif

3
kernel/irq/handle.c
View file

@ -122,7 +122,8 @@ irqreturn_t handle_irq_event(struct irq_desc *desc)
struct irqaction *action = desc->action;
irqreturn_t ret;
desc->status &= ~IRQ_PENDING;
irq_compat_clr_pending(desc);
desc->istate &= ~IRQS_PENDING;
irq_compat_set_progress(desc);
desc->istate |= IRQS_INPROGRESS;
raw_spin_unlock(&desc->lock);

4
kernel/irq/internals.h
View file

@ -46,6 +46,7 @@ enum {
* IRQS_REPLAY - irq is replayed
* IRQS_WAITING - irq is waiting
* IRQS_DISABLED - irq is disabled
* IRQS_PENDING - irq is pending and replayed later
*/
enum {
IRQS_AUTODETECT = 0x00000001,
@ -56,6 +57,7 @@ enum {
IRQS_REPLAY = 0x00000040,
IRQS_WAITING = 0x00000080,
IRQS_DISABLED = 0x00000100,
IRQS_PENDING = 0x00000200,
};
#define irq_data_to_desc(data) container_of(data, struct irq_desc, irq_data)
@ -139,7 +141,6 @@ static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc)
print_symbol("%s\n", (unsigned long)desc->action->handler);
}
P(IRQ_PENDING);
P(IRQ_LEVEL);
P(IRQ_MASKED);
#ifdef CONFIG_IRQ_PER_CPU
@ -154,6 +155,7 @@ static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc)
PS(IRQS_REPLAY);
PS(IRQS_WAITING);
PS(IRQS_DISABLED);
PS(IRQS_PENDING);
}
#undef P

5
kernel/irq/manage.c
View file

@ -714,10 +714,11 @@ static int irq_thread(void *data)
* CHECKME: We might need a dedicated
* IRQ_THREAD_PENDING flag here, which
* retriggers the thread in check_irq_resend()
* but AFAICT IRQ_PENDING should be fine as it
* but AFAICT IRQS_PENDING should be fine as it
* retriggers the interrupt itself --- tglx
*/
desc->status |= IRQ_PENDING;
irq_compat_set_pending(desc);
desc->istate |= IRQS_PENDING;
raw_spin_unlock_irq(&desc->lock);
} else {
raw_spin_unlock_irq(&desc->lock);

3
kernel/irq/pm.c
View file

@ -69,7 +69,8 @@ int check_wakeup_irqs(void)
int irq;
for_each_irq_desc(irq, desc)
if ((desc->status & IRQ_WAKEUP) && (desc->status & IRQ_PENDING))
if ((desc->status & IRQ_WAKEUP) &&
(desc->istate & IRQS_PENDING))
return -EBUSY;
return 0;

5
kernel/irq/resend.c
View file

@ -64,8 +64,9 @@ void check_irq_resend(struct irq_desc *desc, unsigned int irq)
return;
if (desc->istate & IRQS_REPLAY)
return;
if (desc->status & IRQ_PENDING) {
desc->status &= ~IRQ_PENDING;
if (desc->istate & IRQS_PENDING) {
irq_compat_clr_pending(desc);
desc->istate &= ~IRQS_PENDING;
desc->istate |= IRQS_REPLAY;
if (!desc->irq_data.chip->irq_retrigger ||

2
kernel/irq/settings.h
View file

@ -14,3 +14,5 @@ enum {
#define IRQ_WAITING GOT_YOU_MORON
#undef IRQ_DISABLED
#define IRQ_DISABLED GOT_YOU_MORON
#undef IRQ_PENDING
#define IRQ_PENDING GOT_YOU_MORON

5
kernel/irq/spurious.c
View file

@ -93,7 +93,8 @@ static int try_one_irq(int irq, struct irq_desc *desc, bool force)
* Already running: If it is shared get the other
* CPU to go looking for our mystery interrupt too
*/
desc->status |= IRQ_PENDING;
irq_compat_set_pending(desc);
desc->istate |= IRQS_PENDING;
goto out;
}
@ -103,7 +104,7 @@ static int try_one_irq(int irq, struct irq_desc *desc, bool force)
if (handle_irq_event(desc) == IRQ_HANDLED)
ret = IRQ_HANDLED;
action = desc->action;
} while ((desc->status & IRQ_PENDING) && action);
} while ((desc->istate & IRQS_PENDING) && action);
desc->istate &= ~IRQS_POLL_INPROGRESS;
out:
raw_spin_unlock(&desc->lock);