qemu-e2k/util
Stefan Hajnoczi 73fd282e7b aio-posix: add io_uring fd monitoring implementation
The recent Linux io_uring API has several advantages over ppoll(2) and
epoll(2).  Details are given in the source code.

Add an io_uring implementation and make it the default on Linux.
Performance is the same as with epoll(7) but later patches add
optimizations that take advantage of io_uring.

It is necessary to change how aio_set_fd_handler() deals with deleting
AioHandlers since removing monitored file descriptors is asynchronous in
io_uring.  fdmon_io_uring_remove() marks the AioHandler deleted and
aio_set_fd_handler() will let it handle deletion in that case.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Link: https://lore.kernel.org/r/20200305170806.1313245-6-stefanha@redhat.com
Message-Id: <20200305170806.1313245-6-stefanha@redhat.com>
2020-03-09 16:41:31 +00:00
..
aio-posix.c aio-posix: add io_uring fd monitoring implementation 2020-03-09 16:41:31 +00:00
aio-posix.h aio-posix: add io_uring fd monitoring implementation 2020-03-09 16:41:31 +00:00
aio-wait.c
aio-win32.c
aiocb.c
async.c util/async: make bh_aio_poll() O(1) 2020-02-22 08:26:47 +00:00
atomic64.c
base64.c
bitmap.c
bitops.c
buffer.c
bufferiszero.c
cacheinfo.c util/cacheinfo: fix crash when compiling with uClibc 2020-01-21 14:18:12 -10:00
compatfd.c
coroutine-sigaltstack.c
coroutine-ucontext.c
coroutine-win32.c
crc32c.c
cutils.c util/cutils: Turn FIXME comment into QEMU_BUILD_BUG_ON() 2019-12-18 12:26:25 +01:00
dbus.c util: add dbus helper unit 2020-01-06 18:41:32 +04:00
drm.c
envlist.c
error.c error: make Error **errp const where it is appropriate 2019-12-18 08:36:16 +01:00
event_notifier-posix.c event_notifier: avoid dandling file descriptor in event_notifier_cleanup 2019-10-24 19:26:52 +02:00
event_notifier-win32.c
fdmon-epoll.c aio-posix: simplify FDMonOps->update() prototype 2020-03-09 16:41:31 +00:00
fdmon-io_uring.c aio-posix: add io_uring fd monitoring implementation 2020-03-09 16:41:31 +00:00
fdmon-poll.c aio-posix: simplify FDMonOps->update() prototype 2020-03-09 16:41:31 +00:00
fifo8.c
filemonitor-inotify.c
filemonitor-stub.c
getauxval.c
guest-random.c replay: record and replay random number sources 2020-01-07 12:08:39 +01:00
hbitmap.c hbitmap: handle set/reset with zero length 2019-10-28 11:22:30 +01:00
hexdump.c
host-utils.c
id.c chardev: generate an internal id when none given 2020-01-07 16:50:09 +04:00
iov.c util/ioc.c: try to reassure Coverity about qemu_iovec_init_extended 2019-10-08 14:27:35 +01:00
iova-tree.c
keyval.c
lockcnt.c
log.c linux-user: Use `qemu_log' for strace 2020-02-19 11:17:40 +01:00
main-loop.c Do not use %m in common code to print error messages 2019-10-22 09:38:42 +02:00
Makefile.objs aio-posix: add io_uring fd monitoring implementation 2020-03-09 16:41:31 +00:00
memfd.c
mmap-alloc.c core: replace getpagesize() with qemu_real_host_page_size 2019-10-26 15:38:06 +02:00
module.c module: check module wasn't already initialized 2020-02-22 08:26:47 +00:00
notify.c
nvdimm-utils.c mem: move nvdimm_device_list to utilities 2020-02-21 09:15:03 +11:00
osdep.c osdep: add qemu_unlink() 2020-01-02 16:29:32 +04:00
oslib-posix.c mem-prealloc: optimize large guest startup 2020-02-25 09:18:01 +01:00
oslib-win32.c core: replace getpagesize() with qemu_real_host_page_size 2019-10-26 15:38:06 +02:00
pagesize.c
path.c
qdist.c
qemu-co-shared-resource.c util: introduce SharedResource 2019-10-28 11:22:31 +01:00
qemu-config.c
qemu-coroutine-io.c yield_until_fd_readable: make it work with any AioContect 2019-10-25 14:38:29 +02:00
qemu-coroutine-lock.c
qemu-coroutine-sleep.c qemu-coroutine-sleep: Silence Coverity warning 2019-11-18 16:01:34 -06:00
qemu-coroutine.c
qemu-error.c error: Fix -msg timestamp default 2019-12-18 08:36:15 +01:00
qemu-openpty.c
qemu-option.c
qemu-print.c
qemu-progress.c
qemu-sockets.c
qemu-thread-common.h
qemu-thread-posix.c
qemu-thread-win32.c
qemu-timer-common.c Remove support for CLOCK_MONOTONIC not being defined 2020-02-12 16:23:01 +01:00
qemu-timer.c qemu-timer: reuse MIN macro in qemu_timeout_ns_to_ms 2019-10-24 20:10:18 +02:00
qht.c
qsp.c qsp: Use WITH_RCU_READ_LOCK_GUARD 2019-12-17 19:33:52 +01:00
range.c
rcu.c
readline.c
stats64.c
sys_membarrier.c
systemd.c Do not use %m in common code to print error messages 2019-10-22 09:38:42 +02:00
thread-pool.c
throttle.c
timed-average.c
trace-events
unicode.c
uri.c
uuid.c
vfio-helpers.c Report stringified errno in VFIO related errors 2020-02-18 20:20:49 +01:00