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genirq: Add IRQ_INPROGRESS to core

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We need to maintain the flag for now in both fields status and istate.
Add a CONFIG_GENERIC_HARDIRQS_NO_COMPAT switch to allow testing w/o
the status one. Wrap the access to status IRQ_INPROGRESS in a inline
which can be turned of with CONFIG_GENERIC_HARDIRQS_NO_COMPAT along
with the define.

There is no reason that anything outside of core looks at this. That
needs some modifications, but we'll get there.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner
2011-02-07 21:48:49 +01:00
parent 6954b75b48
commit 009b4c3b8a
9 changed files with 57 additions and 22 deletions
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6
kernel/irq/spurious.c
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@@ -45,10 +45,10 @@ bool irq_wait_for_poll(struct irq_desc *desc)
#ifdef CONFIG_SMP
do {
raw_spin_unlock(&desc->lock);
while (desc->status & IRQ_INPROGRESS)
while (desc->istate & IRQS_INPROGRESS)
cpu_relax();
raw_spin_lock(&desc->lock);
} while (desc->status & IRQ_INPROGRESS);
} while (desc->istate & IRQS_INPROGRESS);
/* Might have been disabled in meantime */
return !(desc->status & IRQ_DISABLED) && desc->action;
#else
@@ -88,7 +88,7 @@ static int try_one_irq(int irq, struct irq_desc *desc, bool force)
goto out;
/* Already running on another processor */
if (desc->status & IRQ_INPROGRESS) {
if (desc->istate & IRQS_INPROGRESS) {
/*
* Already running: If it is shared get the other
* CPU to go looking for our mystery interrupt too