[Qemu-devel] [PATCH v4 0/3] aio: Use epoll in aio_poll()

[Fam Zheng <famz@redhat.com>]

v4: Rebase onto master (with aio_disable_external):
    Don't use epoll if aio_external_disabled(ctx);
    Change assert on epoll_ctl return code to disable epoll;
    Rerun benchmark;

v3: Remove the redundant check in aio_epoll_try_enable. [Stefan]

v2: Merge aio-epoll.c into aio-posix.c. [Paolo]
    Capture some benchmark data in commit log.

This series adds the ability to use epoll in aio_poll() on Linux. It's switched
on in a dynamic way rather than static for two reasons: 1) when the number of
fds is not high enough, using epoll has little advantage; 2) when an epoll
incompatible fd needs to be handled, we need to fall back.  The epoll is
enabled when a fd number threshold is met.


Fam Zheng (3):
  aio: Introduce aio_external_disabled
  aio: Introduce aio_context_setup
  aio: Introduce aio-epoll.c

 aio-posix.c         | 188 +++++++++++++++++++++++++++++++++++++++++++++++++++-
 aio-win32.c         |   4 ++
 async.c             |  13 +++-
 include/block/aio.h |  24 +++++++
 4 files changed, 226 insertions(+), 3 deletions(-)

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2.4.3