Messages in this thread | | | Date | Tue, 1 Dec 2009 10:05:56 -0800 (PST) | From | Davide Libenzi <> | Subject | Re: Signal from kernel space to user space |
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On Tue, 1 Dec 2009, Mark Hounschell wrote:
> If no "information" is required, which of these are the fastest, say from an interrupt handler? > I have a PCI card that handles external interrupts from the outside world and does nothing but > report those external interrupts to userland. We use send_sig or wake_up_process depending > on whether userland is going to wait for it or not. If there is a better/faster way I would be > very interested.
eventfd is. eventfd_signal() is also callable from non-sleeping contexts.
- Davide
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