linux/Documentation
Mikulas Patocka 5268de78e1 dm-crypt: add the optional "high_priority" flag
When WQ_HIGHPRI was used for the dm-crypt kcryptd workqueue it was
reported that dm-crypt performs badly when the system is loaded[1].
Because of reports of audio skipping, dm-crypt stopped using
WQ_HIGHPRI with commit f612b2132d (Revert "dm crypt: use WQ_HIGHPRI
for the IO and crypt workqueues").

But it has since been determined that WQ_HIGHPRI provides improved
performance (with reduced latency) for highend systems with much more
resources than those laptop/desktop users which suffered from the use
of WQ_HIGHPRI.

As such, add an option "high_priority" that allows the use of
WQ_HIGHPRI for dm-crypt's workqueues and also sets the write_thread to
nice level MIN_NICE (-20). This commit makes it optional, so that
normal users won't be harmed by it.

[1] https://listman.redhat.com/archives/dm-devel/2023-February/053410.html

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
2024-04-16 11:34:47 -04:00
..
ABI Char/Misc and other driver subsystem updates for 6.9-rc1 2024-03-21 13:21:31 -07:00
accel
accounting
admin-guide dm-crypt: add the optional "high_priority" flag 2024-04-16 11:34:47 -04:00
arch Documentation/x86: Fix title underline length 2024-03-25 11:29:16 +01:00
block
bpf bpf, docs: Rename legacy conformance group to packet 2024-03-04 14:31:06 +01:00
cdrom
core-api workqueue: Changes for v6.9 2024-03-11 12:50:42 -07:00
cpu-freq
crypto
dev-tools - Sumanth Korikkar has taught s390 to allocate hotplug-time page frames 2024-03-14 17:43:30 -07:00
devicetree A set of updates for clocksource and clockevent drivers: 2024-03-23 14:42:45 -07:00
doc-guide docs: drop the version constraints for sphinx and dependencies 2024-03-03 08:17:20 -07:00
driver-api TTY/Serial driver update for 6.9-rc1 2024-03-21 12:44:10 -07:00
fault-injection Fixed case issue with 'fault-injection' in documentation 2024-02-21 13:44:21 -07:00
fb
features membarrier: riscv: Provide core serializing command 2024-02-15 08:04:14 -08:00
filesystems f2fs update for 6.9-rc1 2024-03-18 11:26:00 -07:00
firmware_class
firmware-guide More ACPI updates for 6.9-rc1 2024-03-19 11:15:14 -07:00
fpga
gpu drm-misc-next for v6.9: 2024-02-26 09:51:49 +01:00
hid
hwmon hwmon: (aspeed-g6-pwm-tacho): Support for ASPEED g6 PWM/Fan tach 2024-03-07 10:50:16 -08:00
i2c Documentation: i2c: Document that client auto-detection is a legacy mechanism 2024-03-07 09:42:09 +01:00
iio docs: iio: add documentation for adis16475 driver 2024-02-28 19:26:36 +00:00
images
infiniband
input
isdn
kbuild Documentation/llvm: Note s390 LLVM=1 support with LLVM 18.1.0 and newer 2024-03-31 21:09:50 +09:00
kernel-hacking
leds
litmus-tests
livepatch
locking
maintainer
mhi
misc-devices
mm This pull request contains updates for UBI and UBIFS: 2024-03-21 15:09:29 -07:00
netlabel
netlink Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-03-11 20:38:36 -07:00
networking ionic: update documentation for XDP support 2024-03-20 21:05:15 -07:00
nvdimm
nvme
PCI
pcmcia
peci
power Documentation: power: Fix typo in suspend and interrupts doc 2024-03-13 20:51:11 +01:00
process A handful of late-arriving documentation fixes and enhancements. 2024-03-20 09:36:46 -07:00
RCU A moderatly busy cycle for development this time around. 2024-03-12 15:18:34 -07:00
rust arm64 updates for 6.9: 2024-03-14 15:35:42 -07:00
scheduler A single update for the documentation of the base_slice_ns tunable to 2024-03-24 11:11:05 -07:00
scsi
security
sound ALSA: doc: Use DEFINE_SIMPLE_DEV_PM_OPS() 2024-02-12 11:50:26 +01:00
sphinx docs: drop the version constraints for sphinx and dependencies 2024-03-03 08:17:20 -07:00
sphinx-static
spi spi: docs: spidev: fix echo command format 2024-03-19 18:37:55 +00:00
staging docs: staging: fix typo in docs 2024-02-08 15:38:21 -07:00
target
tee
timers
tools tools/rtla: Add -U/--user-load option to timerlat 2024-03-20 05:39:06 +01:00
trace tracing/user_events: Document multi-format flag 2024-03-18 10:13:16 -04:00
translations - Sumanth Korikkar has taught s390 to allocate hotplug-time page frames 2024-03-14 17:43:30 -07:00
usb Documentation: usb: Document FunctionFS DMABUF API 2024-02-17 17:00:09 +01:00
userspace-api media updates for v6.9-rc1 2024-03-15 11:36:54 -07:00
virt S390: 2024-03-15 13:03:13 -07:00
w1 w1: add UART w1 bus driver 2024-02-15 15:02:33 +01:00
watchdog
wmi platform/x86: wmi: Update documentation regarding _WED 2024-02-27 14:44:31 +02:00
.gitignore
atomic_bitops.txt
atomic_t.txt
Changes
CodingStyle
conf.py docs: Restore "smart quotes" for quotes 2024-02-28 15:48:18 -07:00
docutils.conf
dontdiff
index.rst A moderatly busy cycle for development this time around. 2024-03-12 15:18:34 -07:00
Kconfig
Makefile docs: Makefile: Add dependency to $(YNL_INDEX) for targets other than htmldocs 2024-03-05 11:06:43 -07:00
memory-barriers.txt
SubmittingPatches
subsystem-apis.rst