[lkml]   [2009]   [May]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [KVM PATCH v4 2/2] kvm: add support for irqfd via eventfd-notification interface
    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

     \ /
      Last update: 2009-05-07 17:51    [W:0.020 / U:21.492 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site