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authorPaul Mundt <lethal@linux-sh.org>2011-04-07 06:01:44 +0900
committerThomas Gleixner <tglx@linutronix.de>2011-04-23 15:56:24 +0200
commit7f1b1244e159a8490d7fb13667c6cb7e1e75046b (patch)
tree1d5f5ff0ec14e3ac84d4ec17b0de4d43dacf8118 /kernel/irq/manage.c
parent770767787c23040dc152e7ae230597ff55b39470 (diff)
downloadlinux-stericsson-7f1b1244e159a8490d7fb13667c6cb7e1e75046b.tar.gz
genirq: Support per-IRQ thread disabling.
This adds support for disabling threading on a per-IRQ basis via the IRQ status instead of the IRQ flow, which is necessary for interrupts that don't follow the natural IRQ flow channels, such as those that are virtually created. The new APIs added are simply: irq_set_thread() irq_set_nothread() which follow the rest of the IRQ status routines. Chained handlers also have IRQ_NOTHREAD set on them automatically, making the lack of threading explicit rather than implicit. Subsequently, the nothread flag can be viewed through the standard genirq debugging facilities. [ tglx: Fixed cleanup fallout ] Signed-off-by: Paul Mundt <lethal@linux-sh.org> Link: http://lkml.kernel.org/r/%3C20110406210135.GF18426%40linux-sh.org%3E Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/irq/manage.c')
-rw-r--r--kernel/irq/manage.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 07c1611f3899..f7ce0021e1c4 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -900,7 +900,8 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
*/
new->handler = irq_nested_primary_handler;
} else {
- irq_setup_forced_threading(new);
+ if (irq_settings_can_thread(desc))
+ irq_setup_forced_threading(new);
}
/*