Messages in this thread | | | Date | Thu, 07 May 2009 18:47:19 +0300 | From | Avi Kivity <> | Subject | Re: [KVM PATCH v4 2/2] kvm: add support for irqfd via eventfd-notification interface |
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Davide Libenzi wrote: > >> What's your take on adding irq context safe callbacks to irqfd? >> >> To give some background here, we would like to use eventfd as a generic >> connector between components, so the components do not know about each other. >> So far eventfd successfully abstracts among components in the same process, in >> different processes, and in the kernel. >> >> eventfd_signal() can be safely called from irq context, and will wake up a >> waiting task. But in some cases, if the consumer is in the kernel, it may be >> able to consume the event from irq context, saving a context switch. >> >> So, will you consider patches adding this capability to eventfd? >> > > Maybe I got lost in the thread, but inside the kernel we have > callback-based wakeup since long time. This is what epoll uses, when > hooking into the file* f_op->poll() subsystem. > Did you mean something else? >
Do you mean wait_queue_t::func?
-- error compiling committee.c: too many arguments to function
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