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b5f4fda4fb
qemu/util
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Stefan Hajnoczi b5f4fda4fb aio: make aio_context_acquire()/aio_context_release() a no-op 
aio_context_acquire()/aio_context_release() has been replaced by
fine-grained locking to protect state shared by multiple threads. The
AioContext lock still plays the role of balancing locking in
AIO_WAIT_WHILE() and many functions in QEMU either require that the
AioContext lock is held or not held for this reason. In other words, the
AioContext lock is purely there for consistency with itself and serves
no real purpose anymore.

Stop actually acquiring/releasing the lock in
aio_context_acquire()/aio_context_release() so that subsequent patches
can remove callers across the codebase incrementally.

I have performed "make check" and qemu-iotests stress tests across
x86-64, ppc64le, and aarch64 to confirm that there are no failures as a
result of eliminating the lock.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231205182011.1976568-5-stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2023-12-21 22:49:27 +01:00
..
aio-posix.c aio: remove aio_disable_external() API 2023-05-30 17:37:26 +02:00
aio-posix.h aio: remove aio_disable_external() API 2023-05-30 17:37:26 +02:00
aio-wait.c aio-wait: avoid AioContext lock in aio_wait_bh_oneshot() 2023-05-10 14:15:13 +02:00
aio-win32.c aio: remove aio_disable_external() API 2023-05-30 17:37:26 +02:00
aiocb.c
async.c aio: make aio_context_acquire()/aio_context_release() a no-op 2023-12-21 22:49:27 +01:00
atomic64.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
base64.c
bitmap.c migration: Use non-atomic ops for clear log bitmap 2022-11-21 11:58:10 +01:00
bitops.c replace TABs with spaces 2023-03-20 12:43:50 +01:00
block-helpers.c
block-helpers.h
buffer.c
bufferiszero.c util/bufferiszero: Use i386 host/cpuinfo.h 2023-05-23 16:51:13 -07:00
cacheflush.c util/cacheflush: Avoid possible redundant dcache flush on Darwin 2023-06-13 11:28:58 +02:00
chardev_open.c util/char_dev: Add open_cdev() 2023-12-19 19:03:38 +01:00
compatfd.c util: replace pipe()+cloexec with g_unix_open_pipe() 2022-05-03 15:18:14 +04:00
coroutine-sigaltstack.c osdep: set _FORTIFY_SOURCE=2 when optimization is enabled 2023-10-04 09:52:06 -04:00
coroutine-ucontext.c osdep: set _FORTIFY_SOURCE=2 when optimization is enabled 2023-10-04 09:52:06 -04:00
coroutine-windows.c build: move coroutine backend selection to meson 2023-05-18 08:53:52 +02:00
cpuinfo-aarch64.c *: Delete checks for old host definitions 2023-09-19 13:20:54 -04:00
cpuinfo-i386.c host/include/i386: Implement clmul.h 2023-09-15 13:57:00 +00:00
cpuinfo-loongarch.c util: Add cpuinfo for loongarch64 2023-11-06 08:27:21 -08:00
cpuinfo-ppc.c util: spelling fixes 2023-08-31 19:47:43 +02:00
crc32c.c igb: Implement Rx SCTP CSO 2023-05-23 15:20:15 +08:00
crc-ccitt.c
cutils.c cutils: Fix get_relocated_path on Windows 2023-10-19 23:13:27 +02:00
dbus.c
defer-call.c util/defer-call: move defer_call() to util/ 2023-10-31 15:41:42 +01:00
drm.c
envlist.c replace TABs with spaces 2023-03-20 12:43:50 +01:00
error-report.c util/error: add G_GNUC_PRINTF for various functions 2023-01-11 10:44:34 +01:00
error.c util/error: Fix use-after-free errors reported by Coverity 2023-04-06 12:38:42 -04:00
event_notifier-posix.c Replace qemu_pipe() with g_unix_open_pipe() 2022-05-03 15:17:56 +04:00
event_notifier-win32.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
fdmon-epoll.c aio: remove aio_disable_external() API 2023-05-30 17:37:26 +02:00
fdmon-io_uring.c aio-posix: zero out io_uring sqe user_data 2023-08-30 07:39:59 -04:00
fdmon-poll.c aio: remove aio_disable_external() API 2023-05-30 17:37:26 +02:00
fifo8.c
filemonitor-inotify.c util/filemonitor-inotify.c: spelling fix: kenel 2023-11-15 12:06:05 +03:00
filemonitor-stub.c
getauxval.c
guest-random.c util/guest-random: Clean up global variable shadowing 2023-10-06 13:27:48 +02:00
hbitmap.c hbitmap: fix hbitmap_status() return value for first dirty bit case 2023-02-17 14:34:24 +01:00
hexdump.c include: move C/util-related declarations to cutils.h 2022-04-06 14:31:43 +02:00
host-utils.c host-utils: Implemented signed 256-by-128 division 2022-06-20 08:38:58 -03:00
id.c
int128.c include/qemu/int128: Use Int128 structure for TCI 2023-02-04 06:19:42 -10:00
interval-tree.c util/interval-tree: Check root for null in interval_tree_iter_first 2023-08-09 09:26:32 -07:00
iov.c util/iov: Avoid dynamic stack allocation 2023-09-07 20:32:11 -05:00
iova-tree.c util: accept iova_tree_remove_parameter by value 2022-09-02 10:22:39 +08:00
keyval.c include: add qemu/keyval.h 2022-04-21 17:03:51 +04:00
lockcnt.c
log.c util/log: re-allow switching away from stderr log file 2023-10-07 19:02:33 +02:00
main-loop.c util: spelling fixes 2023-08-31 19:47:43 +02:00
memalign.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
memfd.c
meson.build util/char_dev: Add open_cdev() 2023-12-19 19:03:38 +01:00
mmap-alloc.c util/mmap-alloc: qemu_fd_getfs() 2023-04-24 11:29:00 +02:00
module.c module: add Error arguments to module_load and module_load_qom 2022-11-06 09:48:50 +01:00
notify.c
nvdimm-utils.c
osdep.c error handling: Use RETRY_ON_EINTR() macro where applicable 2023-01-09 13:50:47 +01:00
oslib-posix.c util: Delete checks for old host definitions 2023-09-15 05:26:50 -07:00
oslib-win32.c win32: avoid discarding the exception handler 2023-10-03 15:05:20 +04:00
path.c
qdist.c util: spelling fixes 2023-08-31 19:47:43 +02:00
qemu-co-shared-resource.c
qemu-co-timeout.c util: add qemu-co-timeout 2022-06-29 10:56:12 +03:00
qemu-config.c error: Drop superfluous #include "qapi/qmp/qerror.h" 2023-02-23 13:56:14 +01:00
qemu-coroutine-io.c aio: remove aio_disable_external() API 2023-05-30 17:37:26 +02:00
qemu-coroutine-lock.c atomics: eliminate mb_read/mb_set 2023-06-06 09:42:14 +02:00
qemu-coroutine-sleep.c coroutine: Clean up superfluous inclusion of qemu/coroutine.h 2023-01-19 10:18:28 +01:00
qemu-coroutine.c meson: do not use set10 2023-10-17 15:20:53 +02:00
qemu-option.c qemu-option: Allow deleting opts during qemu_opts_foreach() 2021-10-15 16:11:22 +02:00
qemu-print.c
qemu-progress.c include: move progress API to qemu-progress.h 2022-04-06 14:31:43 +02:00
qemu-sockets.c util: spelling fixes 2023-08-31 19:47:43 +02:00
qemu-thread-common.h
qemu-thread-posix.c qemu-thread-posix: cleanup, fix, document QemuEvent 2023-03-07 12:38:40 +01:00
qemu-thread-win32.c qemu-thread-win32: cleanup, fix, document QemuEvent 2023-03-07 12:38:40 +01:00
qemu-timer-common.c
qemu-timer.c qemu-timer: Skip empty timer lists before locking in qemu_clock_deadline_ns_all 2022-06-21 09:24:34 -07:00
qht.c util/qht: use striped locks under TSAN 2023-02-02 11:48:20 +00:00
qsp.c accel/tcg: include cs_base in our hash calculations 2023-06-01 11:05:05 -04:00
qtree.c tcg: use QTree instead of GTree 2023-03-28 15:23:10 -07:00
range.c util/range.c: spelling fix: inbetween 2023-11-15 12:06:05 +03:00
rcu.c util: spelling fixes 2023-08-31 19:47:43 +02:00
readline.c readline: Extract readline_add_completion_of() from monitor 2023-02-04 07:56:54 +01:00
reserved-region.c util/reserved-region: Add new ReservedRegion helpers 2023-11-03 09:20:31 +01:00
selfmap.c util/selfmap: Use dev_t and ino_t in MapInfo 2023-09-01 13:34:03 -07:00
stats64.c stat64: Add stat64_set() operation 2023-04-27 16:39:43 +02:00
sys_membarrier.c
systemd.c systemd: Also clear LISTEN_FDNAMES during systemd socket activation 2023-05-03 14:00:08 -05:00
thread-context.c qapi: Use returned bool to check for failure (again) 2022-12-14 16:19:35 +01:00
thread-pool.c virtio: use defer_call() in virtio_irqfd_notify() 2023-10-31 15:42:14 +01:00
throttle.c throttle: use THROTTLE_MAX/ARRAY_SIZE for hard code 2023-08-29 10:49:24 +02:00
timed-average.c
trace-events console/win32: allocate shareable display surface 2023-06-27 17:08:56 +02:00
trace.h
transactions.c transactions: Invoke clean() after everything else 2021-11-16 09:43:44 +01:00
unicode.c
uri.c Updated the FSF address to <https://www.gnu.org/licenses/> 2023-02-27 09:15:39 +01:00
userfaultfd.c util/userfaultfd: Support /dev/userfaultfd 2023-02-11 16:51:09 +01:00
uuid.c util/uuid: Add UUID_STR_LEN definition 2023-11-03 09:20:31 +01:00
vfio-helpers.c util/vfio-helpers: Use g_file_read_link() 2023-05-24 09:21:22 +02:00
vhost-user-server.c export/vhost-user-blk: Fix consecutive drains 2023-11-28 14:56:32 +01:00
yank.c