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authorDavide Libenzi <davidel@xmailserver.org>2010-01-13 09:34:36 -0800
committerMarcelo Tosatti <mtosatti@redhat.com>2010-01-25 12:26:38 -0200
commitcb289d6244a37cf932c571d6deb0daa8030f931b (patch)
tree05bea15a25c9d9a4dcc0658a6a8bf845daca535a /virt
parenta6085fbaf65ab09bfb5ec8d902d6d21680fe1895 (diff)
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eventfd - allow atomic read and waitqueue remove
KVM needs a wait to atomically remove themselves from the eventfd ->poll() wait queue head, in order to handle correctly their IRQfd deassign operation. This patch introduces such API, plus a way to read an eventfd from its context. Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Signed-off-by: Avi Kivity <avi@redhat.com>
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