public/qemu
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity
qemu/block
History
Sam Li e2848bc574 Use io_uring_register_ring_fd() to skip fd operations 
Linux recently added a new io_uring(7) optimization API that QEMU
doesn't take advantage of yet. The liburing library that QEMU uses
has added a corresponding new API calling io_uring_register_ring_fd().
When this API is called after creating the ring, the io_uring_submit()
library function passes a flag to the io_uring_enter(2) syscall
allowing it to skip the ring file descriptor fdget()/fdput()
operations. This saves some CPU cycles.

Signed-off-by: Sam Li <faithilikerun@gmail.com>
Message-id: 20220531105011.111082-1-faithilikerun@gmail.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-06-15 14:50:41 +01:00
..
export osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
monitor qapi: rename BlockDirtyBitmapMergeSource to BlockDirtyBitmapOrStr 2022-04-26 13:13:50 -05:00
accounting.c
aio_task.c
amend.c
backup.c
blkdebug.c
blklogwrites.c
blkreplay.c
blkverify.c Replace GCC_FMT_ATTR with G_GNUC_PRINTF 2022-03-22 14:40:51 +04:00
block-backend.c
block-copy.c target-arm queue: 2022-03-08 15:26:10 +00:00
block-gen.h
bochs.c
cloop.c
commit.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
copy-before-write.c block: copy-before-write: realize snapshot-access API 2022-03-07 09:33:31 +01:00
copy-before-write.h
copy-on-read.c
copy-on-read.h Clean up ill-advised or unusual header guards 2022-05-11 16:50:01 +02:00
coroutines.h Clean up header guards that don't match their file name 2022-05-11 16:49:06 +02:00
create.c
crypto.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
crypto.h
curl.c
dirty-bitmap.c block/dirty-bitmap: introduce bdrv_dirty_bitmap_status() 2022-03-07 09:33:30 +01:00
dmg-bz2.c
dmg-lzfse.c
dmg.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
dmg.h
file-posix.c block: move fcntl_setfl() 2022-05-03 15:17:53 +04:00
file-win32.c
filter-compress.c
gluster.c
io.c coroutine-lock: qemu_co_queue_restart_all is a coroutine-only qemu_co_enter_all 2022-05-12 12:29:44 +02:00
io_uring.c Use io_uring_register_ring_fd() to skip fd operations 2022-06-15 14:50:41 +01:00
iscsi-opts.c
iscsi.c include: move qemu_get_vm_name() to sysemu.h 2022-04-06 14:31:43 +02:00
linux-aio.c
meson.build block: introduce snapshot-access block driver 2022-03-07 09:33:31 +01:00
mirror.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
nbd.c nbd: document what is protected by the CoMutexes 2022-04-26 13:16:42 -05:00
nfs.c
null.c
nvme.c Replace qemu_real_host_page variables with inlined functions 2022-04-06 10:50:38 +02:00
parallels-ext.c block: Fix misleading hexadecimal format 2022-03-24 10:38:42 +00:00
parallels.c Replace qemu_real_host_page variables with inlined functions 2022-04-06 10:50:38 +02:00
parallels.h
preallocate.c
progress_meter.c
qapi-sysemu.c block: add 'force' parameter to 'blockdev-change-medium' command 2022-04-25 12:02:36 +02:00
qapi.c
qcow.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
qcow2-bitmap.c
qcow2-cache.c Replace qemu_real_host_page variables with inlined functions 2022-04-06 10:50:38 +02:00
qcow2-cluster.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
qcow2-refcount.c qcow2: Add errp to rebuild_refcount_structure() 2022-04-20 12:09:17 +02:00
qcow2-snapshot.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
qcow2-threads.c
qcow2.c qcow2: Do not reopen data_file in invalidate_cache 2022-05-04 15:55:23 +02:00
qcow2.h Replace GCC_FMT_ATTR with G_GNUC_PRINTF 2022-03-22 14:40:51 +04:00
qed-check.c
qed-cluster.c
qed-l2-cache.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
qed-table.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
qed.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
qed.h
quorum.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
raw-format.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
rbd.c block/rbd: fix write zeroes with growing images 2022-03-22 09:40:54 +01:00
replication.c
reqlist.c block/reqlist: add reqlist_wait_all() 2022-03-07 09:33:30 +01:00
snapshot-access.c block: introduce snapshot-access block driver 2022-03-07 09:33:31 +01:00
snapshot.c
ssh.c Replace GCC_FMT_ATTR with G_GNUC_PRINTF 2022-03-22 14:40:51 +04:00
stream.c block/stream: Drain subtree around graph change 2022-03-29 16:30:55 +02:00
throttle-groups.c
throttle.c
trace-events
trace.h
vdi.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
vhdx-endian.c
vhdx-log.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
vhdx.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
vhdx.h
vmdk.c block/vmdk: Fix reopening bs->file 2022-05-04 15:55:23 +02:00
vpc.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
vvfat.c
win32-aio.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
write-threshold.c