| commit | cb289d6244a37cf932c571d6deb0daa8030f931b | |
| author | Davide Libenzi <davidel@xmailserver.org> | |
| Wed, 13 Jan 2010 17:34:36 +0000 (13 09:34 -0800) | ||
| committer | Marcelo Tosatti <mtosatti@redhat.com> | |
| Mon, 25 Jan 2010 14:26:38 +0000 (25 12:26 -0200) | ||
| tree | 05bea15a25c9d9a4dcc0658a6a8bf845daca535a | treesnapshot (tar.gz zip) |
| parent | a6085fbaf65ab09bfb5ec8d902d6d21680fe1895 | commitdiff |
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>
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>
| fs/eventfd.c | diffblobblamehistory | |
| include/linux/eventfd.h | diffblobblamehistory |