diff options
author | David Woodhouse <dwmw@amazon.co.uk> | 2020-10-27 16:55:21 +0300 |
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committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-11-15 17:49:10 +0300 |
commit | 28f1326710555bbe666f64452d08f2d7dd657cae (patch) | |
tree | 0500d5c7ff66eda5051b0221b04c73b28c8d8942 /net/can | |
parent | e8dbf19508a112d125190df77ee0464b7ba56192 (diff) | |
download | linux-28f1326710555bbe666f64452d08f2d7dd657cae.tar.xz |
eventfd: Export eventfd_ctx_do_read()
Where events are consumed in the kernel, for example by KVM's
irqfd_wakeup() and VFIO's virqfd_wakeup(), they currently lack a
mechanism to drain the eventfd's counter.
Since the wait queue is already locked while the wakeup functions are
invoked, all they really need to do is call eventfd_ctx_do_read().
Add a check for the lock, and export it for them.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Message-Id: <20201027135523.646811-2-dwmw2@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'net/can')
0 files changed, 0 insertions, 0 deletions