Paolo Bonzini 993ed89f35 aio-posix: ensure poll mode is left when aio_notify is called ... With aio=thread, adaptive polling makes latency worse rather than better, because it delays the execution of the ThreadPool's completion bottom half. event_notifier_poll() does run while polling, detecting that a bottom half was scheduled by a worker thread, but because ctx->notifier is explicitly ignored in run_poll_handlers_once(), scheduling the BH does not count as making progress and run_poll_handlers() keeps running. Fix this by recomputing the deadline after *timeout could have changed. With this change, ThreadPool still cannot participate in polling but at least it does not suffer from extra latency. Reported-by: Sergio Lopez <slp@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 20190409122823.12416-1-pbonzini@redhat.com Cc: Stefan Hajnoczi <stefanha@gmail.com> Cc: Kevin Wolf <kwolf@redhat.com> Cc: qemu-block@nongnu.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <1553692145-86728-1-git-send-email-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20190409122823.12416-1-pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>		2019-05-10 10:53:21 +01:00
..
aio-posix.c	aio-posix: ensure poll mode is left when aio_notify is called	2019-05-10 10:53:21 +01:00
aio-wait.c
aio-win32.c	aio-posix: Fix concurrent aio_poll/set_fd_handler.	2019-01-14 14:09:41 +00:00
aiocb.c
async.c
atomic64.c
base64.c
bitmap.c
bitops.c	avoid TABs in files that only contain a few	2019-01-11 15:46:56 +01:00
buffer.c
bufferiszero.c
cacheinfo.c	util/cacheinfo: Use uint64_t on LLP64 model to satisfy Windows ARM64	2019-05-07 12:55:03 +01:00
compatfd.c
coroutine-sigaltstack.c
coroutine-ucontext.c
coroutine-win32.c
crc32c.c
cutils.c	cutils: Fix size_to_str() on 32-bit platforms	2019-04-30 15:29:00 +02:00
drm.c
envlist.c
error.c	util/error: do not free error on error_abort	2019-04-17 19:15:39 +02:00
event_notifier-posix.c
event_notifier-win32.c
fifo8.c
filemonitor-inotify.c	filemon: fix watch IDs to avoid potential wraparound issues	2019-04-02 13:52:02 +01:00
filemonitor-stub.c	filemon: fix watch IDs to avoid potential wraparound issues	2019-04-02 13:52:02 +01:00
getauxval.c
hbitmap.c	Revert "hbitmap: Add @advance param to hbitmap_iter_next()"	2019-01-15 18:26:50 -05:00
hexdump.c
host-utils.c
id.c
iohandler.c
iov.c
iova-tree.c
keyval.c
lockcnt.c
log.c
main-loop.c	slirp: move sources to src/ subdirectory	2019-03-07 12:46:31 +01:00
Makefile.objs	qemu-print: New qemu_printf(), qemu_vprintf() etc.	2019-04-18 22:18:59 +02:00
memfd.c	memfd: improve error messages	2019-03-11 17:17:01 -03:00
mmap-alloc.c	util/mmap-alloc: support MAP_SYNC in qemu_ram_mmap()	2019-04-25 14:17:36 -03:00
module.c
notify.c
osdep.c	slirp: prefer c99 types over BSD kind	2019-02-07 15:49:08 +02:00
oslib-posix.c	util/mmap-alloc: Add a 'is_pmem' parameter to qemu_ram_mmap	2019-04-25 14:17:36 -03:00
oslib-win32.c	hostmem-file: reject invalid pmem file sizes	2019-03-11 10:44:19 -03:00
pagesize.c
path.c
qdist.c
qemu-config.c
qemu-coroutine-io.c
qemu-coroutine-lock.c
qemu-coroutine-sleep.c	qemu-coroutine-sleep: drop CoSleepCB	2019-01-24 10:05:16 +00:00
qemu-coroutine.c
qemu-error.c	monitor error: Make printf()-like functions return a value	2019-04-18 22:18:59 +02:00
qemu-openpty.c
qemu-option.c
qemu-print.c	qemu-print: New qemu_fprintf(), qemu_vfprintf()	2019-04-18 22:18:59 +02:00
qemu-progress.c
qemu-sockets.c	sockets: avoid string truncation warnings when copying UNIX path	2019-05-03 13:03:04 +02:00
qemu-thread-common.h
qemu-thread-posix.c
qemu-thread-win32.c
qemu-timer-common.c
qemu-timer.c
qht.c
qsp.c	qsp: Simplify how qsp_report() prints	2019-04-18 22:18:59 +02:00
range.c	Don't talk about the LGPL if the file is licensed under the GPL	2019-01-30 10:51:20 +01:00
rcu.c
readline.c	util/readline: Add braces to fix checkpatch errors	2019-05-10 10:53:21 +01:00
stats64.c
sys_membarrier.c
systemd.c
thread-pool.c
throttle.c
timed-average.c
trace-events	filemon: fix watch IDs to avoid potential wraparound issues	2019-04-02 13:52:02 +01:00
unicode.c
uri.c
uuid.c	uuid: Make qemu_uuid_bswap() take and return a QemuUUID	2019-02-01 13:46:45 +01:00
vfio-helpers.c	exec: Change RAMBlockIterFunc definition	2019-03-06 10:49:17 +00:00