diff options
author | Andrew Morton <akpm@osdl.org> | 2006-03-25 12:07:36 +0100 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-25 17:22:55 +0100 |
commit | c777ac5594f772ac760e02c3ac71d067616b579d (patch) | |
tree | 3a186fd7c1b63a89bc6c6749b2b234821ee8fdc4 /kernel/irq/migration.c | |
parent | [PATCH] ads7846 build fix (diff) | |
download | linux-c777ac5594f772ac760e02c3ac71d067616b579d.tar.xz linux-c777ac5594f772ac760e02c3ac71d067616b579d.zip |
[PATCH] irq: uninline migration functions
Uninline some massive IRQ migration functions. Put them in the new
kernel/irq/migration.c.
Cc: Andi Kleen <ak@muc.de>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/irq/migration.c')
-rw-r--r-- | kernel/irq/migration.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c new file mode 100644 index 000000000000..6bdd03c524c7 --- /dev/null +++ b/kernel/irq/migration.c @@ -0,0 +1,52 @@ +#include <linux/irq.h> + +#if defined(CONFIG_GENERIC_PENDING_IRQ) + +void set_pending_irq(unsigned int irq, cpumask_t mask) +{ + irq_desc_t *desc = irq_desc + irq; + unsigned long flags; + + spin_lock_irqsave(&desc->lock, flags); + desc->move_irq = 1; + pending_irq_cpumask[irq] = mask; + spin_unlock_irqrestore(&desc->lock, flags); +} + +void move_native_irq(int irq) +{ + cpumask_t tmp; + irq_desc_t *desc = irq_descp(irq); + + if (likely (!desc->move_irq)) + return; + + desc->move_irq = 0; + + if (likely(cpus_empty(pending_irq_cpumask[irq]))) + return; + + if (!desc->handler->set_affinity) + return; + + /* note - we hold the desc->lock */ + cpus_and(tmp, pending_irq_cpumask[irq], cpu_online_map); + + /* + * If there was a valid mask to work with, please + * do the disable, re-program, enable sequence. + * This is *not* particularly important for level triggered + * but in a edge trigger case, we might be setting rte + * when an active trigger is comming in. This could + * cause some ioapics to mal-function. + * Being paranoid i guess! + */ + if (unlikely(!cpus_empty(tmp))) { + desc->handler->disable(irq); + desc->handler->set_affinity(irq,tmp); + desc->handler->enable(irq); + } + cpus_clear(pending_irq_cpumask[irq]); +} + +#endif |