Re: [PATCH] RFC: Set irq thread to RT priority on creation

From: Steven Rostedt
Date: Thu May 30 2013 - 10:54:54 EST


On Thu, 2013-05-30 at 16:07 +0200, Thomas Gleixner wrote:

> > This patch solves an issue for me where a device driver is expected to handle an
> > interrupt immediatly after irq handlers are installed and interrupts enabled.
>
> You miss to explain what kind of issue that is.

I could envision the case where the interrupt is initialized but doesn't
go off until much later. If it never ran, then it would still be in
SCHED_OTHER(), and that first interrupt could have a large delay.

-- Steve


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