linux/Documentation
Linus Torvalds 2004cef11e In the v6.12 scheduler development cycle we had 63 commits from 18 contributors:
- Implement the SCHED_DEADLINE server infrastructure - Daniel Bristot de Oliveira's
    last major contribution to the kernel:
 
      "SCHED_DEADLINE servers can help fixing starvation issues of low priority
      tasks (e.g., SCHED_OTHER) when higher priority tasks monopolize CPU
      cycles. Today we have RT Throttling; DEADLINE servers should be able to
      replace and improve that."
 
      (Daniel Bristot de Oliveira, Peter Zijlstra, Joel Fernandes,
       Youssef Esmat, Huang Shijie)
 
  - Preparatory changes for sched_ext integration:
 
      - Use set_next_task(.first) where required
      - Fix up set_next_task() implementations
      - Clean up DL server vs. core sched
      - Split up put_prev_task_balance()
      - Rework pick_next_task()
      - Combine the last put_prev_task() and the first set_next_task()
      - Rework dl_server
      - Add put_prev_task(.next)
 
       (Peter Zijlstra, with a fix by Tejun Heo)
 
  - Complete the EEVDF transition and refine EEVDF scheduling:
 
      - Implement delayed dequeue
      - Allow shorter slices to wakeup-preempt
      - Use sched_attr::sched_runtime to set request/slice suggestion
      - Document the new feature flags
      - Remove unused and duplicate-functionality fields
      - Simplify & unify pick_next_task_fair()
      - Misc debuggability enhancements
 
       (Peter Zijlstra, with fixes/cleanups by Dietmar Eggemann,
        Valentin Schneider and Chuyi Zhou)
 
  - Initialize the vruntime of a new task when it is first enqueued,
    resulting in significant decrease in latency of newly woken tasks.
    (Zhang Qiao)
 
  - Introduce SM_IDLE and an idle re-entry fast-path in __schedule()
    (K Prateek Nayak, Peter Zijlstra)
 
  - Clean up and clarify the usage of Clean up usage of rt_task()
    (Qais Yousef)
 
  - Preempt SCHED_IDLE entities in strict cgroup hierarchies
    (Tianchen Ding)
 
  - Clarify the documentation of time units for deadline scheduler
    parameters. (Christian Loehle)
 
  - Remove the HZ_BW chicken-bit feature flag introduced a year ago,
    the original change seems to be working fine.
    (Phil Auld)
 
  - Misc fixes and cleanups (Chen Yu, Dan Carpenter, Huang Shijie,
    Peilin He, Qais Yousefm and Vincent Guittot)
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2024-09-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler updates from Ingo Molnar:

 - Implement the SCHED_DEADLINE server infrastructure - Daniel Bristot
   de Oliveira's last major contribution to the kernel:

     "SCHED_DEADLINE servers can help fixing starvation issues of low
      priority tasks (e.g., SCHED_OTHER) when higher priority tasks
      monopolize CPU cycles. Today we have RT Throttling; DEADLINE
      servers should be able to replace and improve that."

   (Daniel Bristot de Oliveira, Peter Zijlstra, Joel Fernandes, Youssef
   Esmat, Huang Shijie)

 - Preparatory changes for sched_ext integration:
     - Use set_next_task(.first) where required
     - Fix up set_next_task() implementations
     - Clean up DL server vs. core sched
     - Split up put_prev_task_balance()
     - Rework pick_next_task()
     - Combine the last put_prev_task() and the first set_next_task()
     - Rework dl_server
     - Add put_prev_task(.next)

   (Peter Zijlstra, with a fix by Tejun Heo)

 - Complete the EEVDF transition and refine EEVDF scheduling:
     - Implement delayed dequeue
     - Allow shorter slices to wakeup-preempt
     - Use sched_attr::sched_runtime to set request/slice suggestion
     - Document the new feature flags
     - Remove unused and duplicate-functionality fields
     - Simplify & unify pick_next_task_fair()
     - Misc debuggability enhancements

   (Peter Zijlstra, with fixes/cleanups by Dietmar Eggemann, Valentin
   Schneider and Chuyi Zhou)

 - Initialize the vruntime of a new task when it is first enqueued,
   resulting in significant decrease in latency of newly woken tasks
   (Zhang Qiao)

 - Introduce SM_IDLE and an idle re-entry fast-path in __schedule()
   (K Prateek Nayak, Peter Zijlstra)

 - Clean up and clarify the usage of Clean up usage of rt_task()
   (Qais Yousef)

 - Preempt SCHED_IDLE entities in strict cgroup hierarchies
   (Tianchen Ding)

 - Clarify the documentation of time units for deadline scheduler
   parameters (Christian Loehle)

 - Remove the HZ_BW chicken-bit feature flag introduced a year ago,
   the original change seems to be working fine (Phil Auld)

 - Misc fixes and cleanups (Chen Yu, Dan Carpenter, Huang Shijie,
   Peilin He, Qais Yousefm and Vincent Guittot)

* tag 'sched-core-2024-09-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (64 commits)
  sched/cpufreq: Use NSEC_PER_MSEC for deadline task
  cpufreq/cppc: Use NSEC_PER_MSEC for deadline task
  sched/deadline: Clarify nanoseconds in uapi
  sched/deadline: Convert schedtool example to chrt
  sched/debug: Fix the runnable tasks output
  sched: Fix sched_delayed vs sched_core
  kernel/sched: Fix util_est accounting for DELAY_DEQUEUE
  kthread: Fix task state in kthread worker if being frozen
  sched/pelt: Use rq_clock_task() for hw_pressure
  sched/fair: Move effective_cpu_util() and effective_cpu_util() in fair.c
  sched/core: Introduce SM_IDLE and an idle re-entry fast-path in __schedule()
  sched: Add put_prev_task(.next)
  sched: Rework dl_server
  sched: Combine the last put_prev_task() and the first set_next_task()
  sched: Rework pick_next_task()
  sched: Split up put_prev_task_balance()
  sched: Clean up DL server vs core sched
  sched: Fixup set_next_task() implementations
  sched: Use set_next_task(.first) where required
  sched/fair: Properly deactivate sched_delayed task upon class change
  ...
2024-09-19 15:55:58 +02:00
..
ABI SCSI misc on 20240919 2024-09-19 11:28:51 +02:00
accel drm next for 6.12-rc1 2024-09-19 10:18:15 +02:00
accounting
admin-guide platform-drivers-x86 for v6.12-1 2024-09-19 09:16:04 +02:00
arch Another relatively mundane cycle for docs: 2024-09-17 16:44:08 +02:00
block docs: block: Fix grammar and spelling mistakes in bfq-iosched.rst 2024-09-05 14:38:10 -06:00
bpf
cdrom
core-api cgroup: Changes for v6.12 2024-09-18 06:39:03 +02:00
cpu-freq
crypto
dev-tools linux_kselftest-kunit-6.12-rc1 2024-09-17 16:52:24 +02:00
devicetree drm next for 6.12-rc1 2024-09-19 10:18:15 +02:00
doc-guide doc-guide: add help documentation checktransupdate.rst 2024-07-30 07:56:22 -06:00
driver-api Some minor fixes and cleanups for IPMI. Nothing big. 2024-09-19 09:33:44 +02:00
fault-injection Fix typo "allocateed" to allocated 2024-08-26 15:37:25 -06:00
fb
features LoongArch: Add ARCH_HAS_DEBUG_VM_PGTABLE support 2024-07-20 22:40:59 +08:00
filesystems overlayfs updates for 6.12 2024-09-19 06:33:18 +02:00
firmware_class
firmware-guide
fpga
gpu drm next for 6.12-rc1 2024-09-19 10:18:15 +02:00
hid Documentation: hid: intel-ish-hid: Add vendor custom firmware loading 2024-08-19 21:12:27 +02:00
hwmon hwmon: Remove devm_hwmon_device_unregister() API function 2024-09-13 07:27:36 -07:00
i2c This release includes significant updates, with the primary 2024-07-13 11:10:54 +02:00
iio
images
infiniband
input
isdn
kbuild Documentation/llvm: turn make command for ccache into code block 2024-08-16 21:34:12 +09:00
kernel-hacking
leds docs: leds: fix typo in Documentation/leds/leds-mlxcpld.rst 2024-08-26 15:07:59 -06:00
litmus-tests
livepatch Documentation: livepatch: Correct release locks antonym 2024-09-04 13:42:27 +02:00
locking
maintainer docs: maintainer: discourage taking conversations off-list 2024-07-16 11:08:26 -06:00
mhi
misc-devices
mm docs:mm: fixed spelling and grammar mistakes on vmalloc kernel stack page 2024-09-10 15:31:45 -06:00
netlabel
netlink Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-09-12 17:11:24 -07:00
networking Documentation: networking: Fix missing PSE documentation and grammar issues 2024-09-13 19:59:53 -07:00
nvdimm
nvme Remove duplicate "and" in 'Linux NVMe docs. 2024-09-10 15:44:20 -06:00
PCI Documentation: PCI: fix typo in pci.rst 2024-09-10 15:30:42 -06:00
pcmcia
peci
power Documentation: PM: Discourage use of deprecated macros 2024-09-04 14:37:57 +02:00
process Another relatively mundane cycle for docs: 2024-09-17 16:44:08 +02:00
RCU Merge branches 'context_tracking.15.08.24a', 'csd.lock.15.08.24a', 'nocb.09.09.24a', 'rcutorture.14.08.24a', 'rcustall.09.09.24a', 'srcu.12.08.24a', 'rcu.tasks.14.08.24a', 'rcu_scaling_tests.15.08.24a', 'fixes.12.08.24a' and 'misc.11.08.24a' into next.09.09.24a 2024-09-09 00:09:47 +05:30
rust docs: rust: remove unintended blockquote in Quick Start 2024-08-27 22:44:29 +02:00
scheduler In the v6.12 scheduler development cycle we had 63 commits from 18 contributors: 2024-09-19 15:55:58 +02:00
scsi
security documentation: add IPE documentation 2024-08-20 14:03:47 -04:00
sound Docs/sound: Add documentation for userspace-driven ALSA timers 2024-08-18 09:55:54 +02:00
sphinx docs: kerneldoc-preamble.sty: Suppress extra spaces in CJK literal blocks 2024-09-05 14:16:41 -06:00
sphinx-static
spi spi: Enable controllers to extend the SPI protocol with MOSI idle configuration 2024-07-29 01:19:51 +01:00
staging
target
tee
timers treewide: Fix wrong singular form of jiffies in comments 2024-09-08 20:47:40 +02:00
tools
trace ftrace: Rewrite of function graph tracer 2024-07-18 13:36:33 -07:00
translations cgroup: Changes for v6.12 2024-09-18 06:39:03 +02:00
usb
userspace-api Linux 6.11-rc6 2024-09-05 14:01:38 -06:00
virt Another relatively mundane cycle for docs: 2024-09-17 16:44:08 +02:00
w1
watchdog Documentation: Capitalize Fahrenheit in watchdog-api.rst 2024-08-16 16:34:41 -06:00
wmi platform/x86: msi-wmi-platform: Fix spelling mistakes 2024-07-31 12:37:01 +03:00
.gitignore
atomic_bitops.txt
atomic_t.txt
Changes
CodingStyle
conf.py
docutils.conf
dontdiff Documentation: dontdiff: remove 'utf8data.h' 2024-08-08 07:15:50 -06:00
index.rst
Kconfig
Makefile
memory-barriers.txt docs/memory-barriers.txt: Remove left-over references to "CACHE COHERENCY" 2024-09-13 23:56:44 -07:00
SubmittingPatches
subsystem-apis.rst