Daniel P. Berrangé 83750c1da8 block: skip automatic zero-init of large array in ioq_submit ...

The 'ioq_submit' method has a struct array that is 8k in size.
Skip the automatic zero-init of this array to eliminate the
performance overhead in the I/O hot path.

The 'iocbs' array will selectively initialized when processing
the I/O data.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20250610123709.835102-4-berrange@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

2025-06-12 13:39:08 -04:00

..

export

block/export: Add option to allow export of inactive nodes

2025-02-06 14:46:40 +01:00

monitor

nbd/server: Allow users to adjust handshake limit in QMP

2025-02-11 13:45:47 -06:00

accounting.c

include: Rename sysemu/ -> system/

2024-12-20 17:44:56 +01:00

aio_task.c

block: Remove unused aio_task_pool_empty

2024-09-30 10:53:18 +03:00

amend.c

…

backup.c

block: move drain outside of bdrv_root_attach_child()

2025-06-04 18:16:34 +02:00

blkdebug.c

block: Expand block status mode from bool to flags

2025-05-14 15:33:34 -05:00

blkio.c

include/system: Move exec/memory.h to system/memory.h

2025-04-23 14:08:21 -07:00

blklogwrites.c

block: move drain outside of bdrv_root_unref_child()

2025-06-04 18:16:34 +02:00

blkreplay.c

include: Rename sysemu/ -> system/

2024-12-20 17:44:56 +01:00

blkverify.c

block: move drain outside of bdrv_root_unref_child()

2025-06-04 18:16:34 +02:00

block-backend.c

block: move drain outside of bdrv_root_unref_child()

2025-06-04 18:16:34 +02:00

block-copy.c

include: Rename sysemu/ -> system/

2024-12-20 17:44:56 +01:00

block-gen.h

…

block-ram-registrar.c

include: Rename sysemu/ -> system/

2024-12-20 17:44:56 +01:00

bochs.c

block: Take graph lock for most of .bdrv_open

2023-11-08 17:56:18 +01:00

cloop.c

block: Take graph lock for most of .bdrv_open

2023-11-08 17:56:18 +01:00

commit.c

block: move drain outside of bdrv_root_attach_child()

2025-06-04 18:16:34 +02:00

copy-before-write.c

block: Expand block status mode from bool to flags

2025-05-14 15:33:34 -05:00

copy-before-write.h

blockdev-backup: Add error handling option for copy-before-write jobs

2025-05-12 18:19:31 +03:00

copy-on-read.c

qapi: Move include/qapi/qmp/ to include/qobject/

2025-02-10 15:33:16 +01:00

copy-on-read.h

block: Mark bdrv_(un)freeze_backing_chain() and callers GRAPH_RDLOCK

2023-11-07 19:14:19 +01:00

coroutines.h

block: Expand block status mode from bool to flags

2025-05-14 15:33:34 -05:00

create.c

qemu/compiler: Absorb 'clang-tsa.h'

2025-03-06 14:21:25 +01:00

crypto.c

include: Rename sysemu/ -> system/

2024-12-20 17:44:56 +01:00

crypto.h

block: Support detached LUKS header creation using qemu-img

2024-02-09 12:50:37 +00:00

curl.c

qapi: Move include/qapi/qmp/ to include/qobject/

2025-02-10 15:33:16 +01:00

dirty-bitmap.c

…

dmg-bz2.c

…

dmg-lzfse.c

…

dmg.c

block: Protect bs->file with graph_lock

2023-11-08 17:56:18 +01:00

dmg.h

…

file-posix.c

file-posix: Probe paths and retry SG_IO on potential path errors

2025-05-22 17:56:50 +02:00

file-win32.c

qapi: Move include/qapi/qmp/ to include/qobject/

2025-02-10 15:33:16 +01:00

filter-compress.c

block: Take graph lock for most of .bdrv_open

2023-11-08 17:56:18 +01:00

gluster.c

file-posix, gluster: Handle zero block status hint better

2025-05-14 15:49:27 -05:00

graph-lock.c

graph-lock: remove AioContext locking

2023-12-21 22:49:27 +01:00

io_uring.c

file-posix: Support FUA writes

2025-03-13 17:44:55 +01:00

io.c

block/io: remove duplicate GLOBAL_STATE_CODE() in bdrv_do_drained_end()

2025-06-04 18:16:34 +02:00

iscsi-opts.c

…

iscsi.c

block: Expand block status mode from bool to flags

2025-05-14 15:33:34 -05:00

linux-aio.c

block: skip automatic zero-init of large array in ioq_submit

2025-06-12 13:39:08 -04:00

meson.build

include: Rename sysemu/ -> system/

2024-12-20 17:44:56 +01:00

mirror.c

block: move drain outside of bdrv_root_attach_child()

2025-06-04 18:16:34 +02:00

nbd.c

block: Expand block status mode from bool to flags

2025-05-14 15:33:34 -05:00

nfs.c

qapi: Move include/qapi/qmp/ to include/qobject/

2025-02-10 15:33:16 +01:00

null.c

block: Expand block status mode from bool to flags

2025-05-14 15:33:34 -05:00

nvme.c

block/nvme: Use host PCI MMIO API

2025-05-08 10:21:10 -04:00

parallels-ext.c

qapi/crypto: Rename QCryptoHashAlgorithm to *Algo, and drop prefix

2024-09-10 14:02:16 +02:00

parallels.c

block: Expand block status mode from bool to flags

2025-05-14 15:33:34 -05:00

parallels.h

block: Protect bs->file with graph_lock

2023-11-08 17:56:18 +01:00

preallocate.c

block: Protect bs->file with graph_lock

2023-11-08 17:56:18 +01:00

progress_meter.c

…

qapi-system.c

qapi: Move include/qapi/qmp/ to include/qobject/

2025-02-10 15:33:16 +01:00

qapi.c

Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging

2025-02-10 13:25:36 -05:00

qcow2-bitmap.c

block/qcow2-bitmap: Replace g_memdup() by g_memdup2()

2024-05-08 19:11:34 +02:00

qcow2-cache.c

qcow2: Mark qcow2_signal_corruption() and callers GRAPH_RDLOCK

2023-10-12 16:31:33 +02:00

qcow2-cluster.c

qcow2: Take locks for accessing bs->file

2023-11-08 17:56:17 +01:00

qcow2-refcount.c

qcow2: Mark qcow2_signal_corruption() and callers GRAPH_RDLOCK

2023-10-12 16:31:33 +02:00

qcow2-snapshot.c

include: Rename sysemu/ -> system/

2024-12-20 17:44:56 +01:00

qcow2-threads.c

…

qcow2.c

block: move drain outside of bdrv_root_unref_child()

2025-06-04 18:16:34 +02:00

qcow2.h

qcow2: Take locks for accessing bs->file

2023-11-08 17:56:17 +01:00

qcow.c

block: Expand block status mode from bool to flags

2025-05-14 15:33:34 -05:00

qed-check.c

…

qed-cluster.c

…

qed-l2-cache.c

…

qed-table.c

…

qed.c

block: Expand block status mode from bool to flags

2025-05-14 15:33:34 -05:00

qed.h

block: Protect bs->file with graph_lock

2023-11-08 17:56:18 +01:00

quorum.c

block: move drain outside of quorum_del_child()

2025-06-04 18:16:34 +02:00

raw-format.c

block: Expand block status mode from bool to flags

2025-05-14 15:33:34 -05:00

rbd.c

block: Expand block status mode from bool to flags

2025-05-14 15:33:34 -05:00

replication.c

block: move drain outside of bdrv_root_unref_child()

2025-06-04 18:16:34 +02:00

reqlist.c

block/reqlist: allow adding overlapping requests

2024-09-30 10:53:18 +03:00

snapshot-access.c

block: Expand block status mode from bool to flags

2025-05-14 15:33:34 -05:00

snapshot.c

block: move drain outside of bdrv_root_unref_child()

2025-06-04 18:16:34 +02:00

ssh.c

qapi: Move include/qapi/qmp/ to include/qobject/

2025-02-10 15:33:16 +01:00

stream.c

block: move drain outside of bdrv_root_attach_child()

2025-06-04 18:16:34 +02:00

throttle-groups.c

qom: Make InterfaceInfo[] uses const

2025-04-25 17:00:41 +02:00

throttle.c

block: Take graph lock for most of .bdrv_open

2023-11-08 17:56:18 +01:00

trace-events

…

trace.h

…

vdi.c

block: Expand block status mode from bool to flags

2025-05-14 15:33:34 -05:00

vhdx-endian.c

…

vhdx-log.c

vhdx: Take locks for accessing bs->file

2023-11-08 17:56:18 +01:00

vhdx.c

qapi: Move include/qapi/qmp/ to include/qobject/

2025-02-10 15:33:16 +01:00

vhdx.h

vhdx: Take locks for accessing bs->file

2023-11-08 17:56:18 +01:00

vmdk.c

block: move drain outside of bdrv_root_unref_child()

2025-06-04 18:16:34 +02:00

vpc.c

block: Expand block status mode from bool to flags

2025-05-14 15:33:34 -05:00

vvfat.c

block: Expand block status mode from bool to flags

2025-05-14 15:33:34 -05:00

win32-aio.c

…

write-threshold.c

block: remove AioContext locking

2023-12-21 22:49:27 +01:00