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    SubjectRe: [RFC][PATCH] irq_work
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    On Thu, 2010-06-24 at 13:08 +0200, Andi Kleen wrote:
    > > And I really want hardirq context for perf callbacks, some code actually
    > > relies on it (I used to have the fallback in the timer softirq and that
    >
    > Surely that could be fixed? *requiring* hard irq context sounds weird.

    possibly, but there is no reason what so ever to use softirq here.

    > > broke thing at some point).
    >
    > I have one case that needs to sleep (but only when interrupting user code)
    > They key thing in it really is to switch stacks back to process.

    softirq can't sleep either, you need a trampoline anyway.


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