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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 block: Mark BlockDriver callbacks for amend job GRAPH_RDLOCK 2023-05-10 14:16:54 +02:00
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-coroutine-wrapper.py: support also basic return types 2022-12-15 16:07:43 +01:00
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 block: Mark bdrv_*_dirty_bitmap() and callers GRAPH_RDLOCK 2023-02-23 19:49:32 +01:00
dmg-bz2.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
dmg-lzfse.c block/dmg: Ignore C99 prototype declaration mismatch from <lzfse.h> 2023-03-30 15:03:36 +02:00
dmg.c block: Protect bs->file with graph_lock 2023-11-08 17:56:18 +01:00
dmg.h block/dmg: Declare a type definition for DMG uncompress function 2023-04-24 13:53:44 -04:00
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.c block/io: remove duplicate GLOBAL_STATE_CODE() in bdrv_do_drained_end() 2025-06-04 18:16:34 +02:00
io_uring.c file-posix: Support FUA writes 2025-03-13 17:44:55 +01:00
iscsi-opts.c modules: add block module annotations 2021-07-09 18:20:27 +02:00
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 coroutine: Clean up superfluous inclusion of qemu/lockable.h 2023-01-19 10:18:28 +01:00
qapi-system.c qapi: Move include/qapi/qmp/ to include/qobject/ 2025-02-10 15:33:16 +01:00
qapi.c Block layer patches 2025-02-10 13:25:36 -05:00
qcow.c block: Expand block status mode from bool to flags 2025-05-14 15:33:34 -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 thread-pool: avoid passing the pool parameter every time 2023-04-25 13:17:28 +02:00
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
qed-check.c qed: mark more functions as coroutine_fns and GRAPH_RDLOCK 2023-06-28 09:46:20 +02:00
qed-cluster.c qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
qed-l2-cache.c osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
qed-table.c block: use bdrv_co_debug_event in coroutine context 2023-06-28 09:46:34 +02:00
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 nbd/client: Accept 64-bit block status chunks 2023-10-05 11:02:08 -05:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vdi.c block: Expand block status mode from bool to flags 2025-05-14 15:33:34 -05:00
vhdx-endian.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
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 aio: remove aio_disable_external() API 2023-05-30 17:37:26 +02:00
write-threshold.c block: remove AioContext locking 2023-12-21 22:49:27 +01:00