v1.0.6

What's Changed

• v1.0.5 by @htejun in #722
• version: Cargo.lock update by @htejun in #724
• scx_lavd: support CPU hotplug correctly by @multics69 in #714
• add link to generated docs in developer guide by @likewhatevs in #727
• Run integration tests against bpf-next kernel every 6 hrs. by @likewhatevs in #726
• scx_rusty: fix single dom short-circuit by @frelon in #731
• scx_layered: Add per layer time slices to stats by @minosfuture in #732
• scx_layered: Refactor topology algorithms to a separate module by @minosfuture in #737
• scx_layered: Add per layer weights by @hodgesds in #735
• Replace PID with Task Pointer in Rusty by @likewhatevs in #713
• scx_lavd: split main.bpf.c into multiple files by @multics69 in #736
• scx_bpfland: rework lowlatency mode by @arighi in #741
• scx_layered: Add big cpumask by @hodgesds in #743
• scx_layered: Use idle smt mask for idle selection by @hodgesds in #740
• scx_layered: Improve perf on non topo aware paths by @hodgesds in #745
• Drop journald from libalpn hooks by @sirlucjan in #742
• scx_loader: Add SwitchScheduler methods to DBUS interface by @vnepogodin in #739
• docs: Add Gentoo installation instructions by @hodgesds in #750
• scx_rusty: Fix BPF crash during CPU hotplug by @ryantimwilson in #751
• scx_layered: Update idle topology selection order by @hodgesds in #747
• scx_layered: lighten/reduce nested loops in layered dispatch by @likewhatevs in #746
• scx_layered: Add doc comment to CpuPool by @minosfuture in #754
• layered: cleanup warnings in bpf compilation by @JakeHillion in #757
• scx_layered: Add stress-ng example layer by @hodgesds in #756
• scx_layered: Make stress-ng non exclusive in example by @hodgesds in #760
• scx_layered: fix ci by @likewhatevs in #764
• scx_bpfland: prevent per-CPU DSQ stall with per-CPU kthreads by @arighi in #755
• scx_layered: enable configuring layer iteration when no topo by @likewhatevs in #765
• [rusty] Fix load stats when host is under-utilized by @ryantimwilson in #763
• scx_layered: Update CI to show stats by @hodgesds in #758
• layered: split dispatch into no_topo version by @JakeHillion in #749
• scx_layered: Rename load_adj statistic by @hodgesds in #766
• layered: attempt to work steal from own llc before others by @JakeHillion in #759
• mitosis: Fix build by @dschatzberg in #767
• scx_layered: Fix verifier errors by @hodgesds in #768
• scx_layered: Cleanup debug messages by @hodgesds in #769
• scx_layered: setup matrix job to run key paths of layered through verifier/stress by @likewhatevs in #770
• scx_layered: Refactor topo preemption by @hodgesds in #771
• scx_bpfland: fix cpumask initialization error by @arighi in #772
• scx_layered: Change default DSQ iter algo by @hodgesds in #776
• scx_layered: Cleanup topology preempt path by @hodgesds in #775
• [layered] Implement reverse weight DSQ algorithm by @ryantimwilson in #777
• layered -- make lsp work nice on util include file by @likewhatevs in #782
• layered: make default value for disable_topology dynamic by @JakeHillion in #786
• layered: move configuration into library component by @JakeHillion in #781
• scx_layered: Cleanup non topology path by @hodgesds in #787
• scx_lavd: mitigate the lock holder preemption problem by @multics69 in #779
• scx_rustland_core: use handle_mm_fault kprobe by @arighi in #785
• scx_bpfland: drop per-cpu DSQs by @arighi in #780
• Add bpftrace script to print vtime distributions across DSQs by @hodgesds in #789
• scx_lavd: do not inspect scx_lavd process itself by @multics69 in #790
• scx_lavd: misc updates by @multics69 in #791
• scripts: Add ftrace perfetto helper scripts by @hodgesds in #792
• scripts: Convert sched ftrace helper scripts to python by @arighi in #796
• scx_layered: Add topology integration test by @hodgesds in #795
• scx_layered: Add LLC integration test by @hodgesds in #797
• Update developer guide with Perfetto info by @hodgesds in #798
• scx_layered: Remove layer iteration by @hodgesds in #801
• scx_mitosis: handle enqueue() on !wakeup by @dschatzberg in #799
• Use per-arch vmlinux.h by @minosfuture in #793
• scx_mitosis: Handle pinned tasks by @dschatzberg in #803
• Revert #793 by @htejun in #809
• scx_rustland fixes and improvements by @arighi in #804
• scx_layered: Refactor refresh cpumasks by @hodgesds in #805
• layered: add RandomTopo layer growth algorithm by @JakeHillion in #814
• layered: make disable_topology arg require equals by @JakeHillion in #815
• remove apt fast from ci setup by @likewhatevs in #817
• scx_rustland_core: update documentation about the new API by @arighi in #816
• scx_bpfland: rework lowlatency mode by @arighi in #813
• scx_rusty: Cleanup cpumask casting by @hodgesds in #820
• scx_layered: Fix crash on aarch64 due to unavailable cache id file by @minosfuture in #744
• scx_lavd: add missing reset_lock_futex_boost() by @multics69 in #818
• scx_rustland: Adjust task's vruntime budget based on latency weight by @arighi in #821
• layered: bpf: add layer kind to layer by @JakeHillion in #826
• scx_layered: fix exit_task ctx lookup err by @likewhatevs in #824
• Use per-arch vmlinux.h v2 by @minosfuture in #819
• scx_lavd: misc performance tuning by @multics69 in #822
• scx_layered: Add timer helpers by @hodgesds in #832
• scx_lavd: fix/work around a verifier error by @multics69 in #831
• fix ci errors due to __str update in kfunc signature by @likewhatevs in #834
• ci: enable verbose mode when testing schedulers by @arighi in #833
• ci: enable SCHED_MC in the virtme-ng kernel config by @arighi in #830
• Revert "fix ci errors due to __str update in kfunc signature" by @htejun in #840
• scx_lavd: various optimizations for more consistent performance by @multics69 in #837
• scx_loader: introduce configuration by @vnepogodin in #843
• Set minimal meson version to silent new warnings by @sirlucjan in #839
• Add script for generating per-arch vmlinux.h files by @minosfuture in #829
• add retries to kernel clone step by @likewhatevs in #844
• scx_layered: Add monitor by @hodgesds in #841
• scx_layered: Fix declarations in timer by @hodgesds in #851
• fix lsp to work after multiarch support by @likewhatevs in #850
• scx_lavd: fix uninitialized memory access at comp_preemption_info() by @multics69 in #846
• layered/timers: support verifying on older kernels and fix logic by @JakeHillion in #852
• ci: enable lockdep in the virtme-ng kernel config by @arighi in #853
• scx_layered: Add ...

v1.0.5

What's Changed

• fix/enable rust tests, make build faster by @likewhatevs in #623
• scx_rustland_core: introduce topology awareness by @arighi in #622
• scx_layered: clean up Layer::new layer_growth_algo by @JakeHillion in #624
• scx_lavd: improve greedy ratio calculation and more by @multics69 in #621
• ci: fix vng command to set the right amount of CPUs by @arighi in #627
• release: Add cargo-publish.py by @htejun in #628
• scx_rustland_core: move includes back to the lib section by @arighi in #629
• split integration test execution by @likewhatevs in #632
• build: Use a single top-level rust workspace by @htejun in #635
• enable docs generation and upload by @likewhatevs in #633
• scx_bpfland: use sum_exec_runtime to evaluate task's used time slice by @arighi in #640
• remove dependency on rlimit.rs by @likewhatevs in #638
• migrate ci vm to 24.04 by @likewhatevs in #641
• scx_layered: Fix typo in stats by @samuelnair in #642
• scx_layered: Pass layer spec for core growth algo by @hodgesds in #644
• scx_bpfland: Documentation consistency fix by @anh0516 in #634
• scx_rusty: init domains when calculating averages by @frelon in #645
• lint: enable cargo fmt by @JakeHillion in #643
• scx_layered: Add random layer growth algo by @hodgesds in #651
• update Tumbleweed installation notes by @frelon in #650
• scx_layered: Add topology aware core growth selection by @hodgesds in #649
• scx_layered: Add stats for XNUMA/XLLC migrations by @hodgesds in #648
• scx_lavd: add a short circuit for the case of no turbo core by @multics69 in #653
• scx_lavd: boost the latency-criticality of kernel threads by @multics69 in #654
• scx_bpfland: refine idle CPU selection logic by @arighi in #655
• scx_layered: add round robin growth strategy by @JakeHillion in #652
• scxstats_to_openmetrics: fix format string by @JakeHillion in #657
• scx_rustland_core: improve idle CPU selection API and logic by @arighi in #658
• scx_rustland_core: prevent CI failures by @arighi in #662
• scx_rustland_core: Access the returned value of saturating_sub() by @vax-r in #665
• scx_layered: Refactor match_layer() and implement helper function to access cpumask within bpf_cpumask by @vax-r in #664
• scx_bpfland: Remove the usage of cast_mask in bpfland_enqueue by @vax-r in #663
• scx_lavd: consider waker's CPU when ops.select_cpu() by @multics69 in #669
• scx_layered: Add a hi fallback dsq per llc by @hodgesds in #449
• scx_layered: Add Big/Little core growth algos by @hodgesds in #667
• scx_layered: Add topology aware preemption by @hodgesds in #666
• scx_lavd: find a victim cpu for preemption within task's compute domain by @multics69 in #670
• scx_layered: Add waker stats per layer by @hodgesds in #671
• scx_layered: Cleanup dump format by @hodgesds in #675
• scx_lavd: propagate waker's latency criticality to its wakee by @multics69 in #673
• scx_common_bpf: Append cast_mask() by @vax-r in #679
• add 'continue on error' to stress tests in ci jobs by @likewhatevs in #680
• scx_layered: Restrict preemption to layer cpumask by @hodgesds in #681
• clean up ci/make ci nicer by @likewhatevs in #682
• scx_layered: Make layered idle CPU selection topology aware by @hodgesds in #683
• enable ide's etc. to work on the bpf.c files by @likewhatevs in #668
• scx_rustland_core: fix mm stall by @arighi in #678
• enable build and test outside src dir by @likewhatevs in #685
• scx_loader: Add initial automatic scheduler switching via --monitor-no-dbus by @MitchellAugustin in #676
• scx_utils: Add gpu-topology crate feature by @frelon in #686
• scx_layered: Add layer growth algo to layer bpf config by @hodgesds in #687
• enable bpftrace when using stress tests by @likewhatevs in #688
• run cargo fmt to make ci green by @likewhatevs in #691
• Sync from kernel and re-enable scx_flatcg and scx_pair by @htejun in #692
• Setup "debugging" and misc cleanup by @likewhatevs in #695
• do not cache fast jobs dependencies by @likewhatevs in #697
• scx_layered: Fix idle core selection by @hodgesds in #696
• ci: enable on merge_group action by @JakeHillion in #698
• dev_guide: document cargo fmt by @JakeHillion in #699
• fix artifact names to work with merge queue naming by @likewhatevs in #700
• scx_loader: Add systemd service and on-DBUS launch by @vnepogodin in #693
• scx_lavd: more accurately determine the performance criticality threshold by @multics69 in #702
• scx_lavd: fix two potential bugs by @multics69 in #704
• scx_layered: Fix cache initialization by @hodgesds in #708
• Revert "scx_rustland_core: prevent deadlock with per-CPU DSQs and CPU… by @arighi in #706
• scx_bpfland small fixes and improvements by @arighi in #709
• scx_stats: Implement macro #stat_doc to autogen doc from stat desc by @minosfuture in #703
• scx_loader: Add D-Bus Introspection XML by @vnepogodin in #707
• scx_layered: Fix compiler warnings by @hodgesds in #711
• Add #stat_doc attribute macro to Stats structs by @minosfuture in #712
• Mention wiki in the README by @parttimenerd in #718
• scx_rusty: Delete unused function variable by @vax-r in #717
• scx_lavd: Fix typo by @vax-r in #716

New Contributors

• @likewhatevs made their first contribution in #623
• @JakeHillion made their first contribution in #624
• @samuelnair made their first contribution in #642
• @MitchellAugustin made their first contribution in #676
• @minosfuture made their first contribution in #703
• @parttimenerd made their first contribution in #718

Full Changelog: v1.0.4...v1.0.5

v1.0.4

What's Changed

• scx_layered: Drop SCX_OPS_ENQ_LAST by @htejun in #534
• scx_bpfland: better time slice control by @arighi in #535
• scx-scheds: set scx_bpfland as default scheduler by @sirlucjan in #537
• scx_bpfland: introduce --lowlatency option by @arighi in #536
• scx_layered: Add pid/ppid matches by @hodgesds in #538
• scx_rusty: Convert to scx_stats by @htejun in #539
• scx_bpfland: cpu frequency and energy awareness by @arighi in #540
• scx-scheds: Update scx_bpfland suggested flags by @sirlucjan in #541
• scx_bpfland, scx_lavd: Improve help info a bit by @anh0516 in #543
• scx_lavd: Fix my own formatting error in #543 scx_rusty: help info and README cleanup by @anh0516 in #547
• scx_bpfland: always honor average nvcsw in lowlatency mode by @arighi in #545
• scx_layered: Add layer match for tgid by @hodgesds in #544
• get_clang_ver: Fix regex for LLVM RC Versions by @ptr1337 in #550
• scx_stats, scx_rusty, scx_layered: Implement --help-stats by @htejun in #542
• scx_lavd: Drop message about unsupported multi-CXX support by @ptr1337 in #552
• scx_lavd: Switch introspection to use scx_stats by @htejun in #553
• scx_lavd, scx_stats: Remove unnecessary messages by @htejun in #554
• scx_stats: Shorten exported names and add prelude module by @htejun in #555
• scx_bpfland: Use scx_stats by @htejun in #556
• scx_stats: Make StatsServerData::describe_meta() output more readable by @htejun in #557
• scx_rustland_core: user-space framework refactoring by @arighi in #548
• build: Use workspace to group rust sub-projects by @htejun in #559
• scx_bpfland: prevent reading energy profile if not available by @arighi in #561
• scx_utils: Add retryable errors by @hodgesds in #549
• scx_lavd: move time slice calculation to ops.enqueue() and ops.select_cpu() and more by @multics69 in #558
• version-tool: Avoid exception by skipping workspace cargo files by @htejun in #562
• scx_rustland_core: small core design improvements by @arighi in #568
• scx_layered: Update help for tgid matching by @hodgesds in #564
• scx_lavd: prioritize the turbo boost-able cores by @multics69 in #566
• scx_lavd: make a loop easier to correctly verify by @multics69 in #571
• scx_bpfland: fix turbo boost domain nullifying primary domain limits by @arighi in #572
• scx_layered: Clean up in-code documentation; add commas for consistency by @anh0516 in #569
• scx_utils: Add Big/Little core logic to Topology by @hodgesds in #570
• scx_bpfland: rely on Topology to classify CPU types by @arighi in #574
• scx_lavd: Add power mode clarification to --no-prefer-turbo-core by @anh0516 in #576
• scx_utils: Add GPU topology by @hodgesds in #575
• scx_layered: Make verification easier on older kernels by @hodgesds in #579
• scx_layered: Add per layer timeslice by @hodgesds in #578
• Layered docs by @hodgesds in #580
• scx_layered: Update docs for layer slice setting by @hodgesds in #581
• scx_bpfland: enhanced task affinity by @arighi in #577
• ci: Remove veristat diff workflow by @hodgesds in #586
• scx_utils: Add cores helper to node topology by @hodgesds in #585
• scx_layered: Add layer growth config by @hodgesds in #582
• scx_lavd: automatically determine power mode and more by @multics69 in #584
• scx_bpfland: always rely on prev_cpu with single-CPU tasks by @arighi in #583
• scx_rustland: convert to scx_stats by @arighi in #590
• scx_lavd: introduce "autopilot" mode and misc. optimization & bug fix by @multics69 in #591
• scx_layered: Fix layer timeslice not being applied by @hodgesds in #592
• scx_bpfland: directly dispatch only per-cpu kthreads with local_kthreads by @arighi in #593
• scx_rustland_core: bump up major version to 2.0.0 by @arighi in #594
• scx_lavd: improve the autopilot mode by @multics69 in #595
• scx_lavd: misc updates (verifier, README, monitor option name, and micro-optimization) by @multics69 in #597
• scx_stats: Drop sched-ext namespace by @sirlucjan in #573
• scx_rustland: aggressively prioritize interactive tasks by @arighi in #599
• scx_helpers: Add pid namespace helpers by @hodgesds in #601
• ci: bump up virtme-ng memory size from 1GB to 2GB by @arighi in #602
• scx_rustland_core: fix pcpu kthread stall by @arighi in #603
• ci: allow parallel builds with meson by @arighi in #604
• scx_loader: Add scheduler loader via system DBUS interface by @vnepogodin in #565
• meson: Remove unused meson.build and add targeted builds for libs by @htejun in #606
• scx_bpfland: improve cpufreq awareness by @arighi in #600
• scx_rustland_core: avoid critical failures due by missing task context by @arighi in #605
• openrc: drop separate logs by @sirlucjan in #607
• scx_layered: Fix stats formatting by @hodgesds in #614
• scx_bpfland: enable "auto" mode by default by @arighi in #615
• scx-scheds: update bpflands suggested flags by @sirlucjan in #617
• scx_bpfland: optimize producer/consumer workloads by @arighi in #618
• scx_layered: Fix stats typo by @hodgesds in #619
• scx_lavd: add --monitor flag and two micro-optimizations by @multics69 in #612
• scx_stats: Add proper logs for LAVD by @sirlucjan in #613
• version: v1.0.4 by @htejun in #620

New Contributors

• @anh0516 made their first contribution in #543

Full Changelog: v1.0.3...v1.0.4

v1.0.3

What's Changed

• rust Updated libbpf-rs & libbpf-cargo to 0.24 by @danielocfb in #436
• versions: Synchronize crate dependency versions by @htejun in #481
• README: update list of build dependencies for Ubuntu by @arighi in #482
• docs: Add developer guide by @hodgesds in #487
• meson: Add veristat script by @hodgesds in #488
• scx_rusty: Make layer matching a global function by @hodgesds in #477
• README: Reflect office hours change of day by @gghh in #492
• scx_rusty: Fix logical error when filtering tasks by @vax-r in #486
• lavd: make LAVD core-type (AMP) aware by @multics69 in #489
• scx_lavd: upgrade nix package from 0.28.0 to 0.29.0 by @multics69 in #493
• scx_bpfland: primary domain by @arighi in #491
• scx: Remove unused variables, imports and functions by @vax-r in #484
• scx_lavd: Build fix by @htejun in #495
• scx_stat: Initial commit by @htejun in #496
• scx_layered: Update nr_cpus when resizing layers by @hodgesds in #497
• scx_stats: Add package metadata and some documentation by @htejun in #498
• scx_stats: Misc changes to sync dep versions and publish on crates.io by @htejun in #499
• scx_stats, scx_layered: Add om_prefix attribute and fix s/stat/stats/ stragglers by @htejun in #500
• scx_stats: Refine scx_stats and implement scxstats_to_openmetrics.py by @htejun in #502
• scheds/rust: Include Cargo.lock in the repo by @htejun in #503
• scx_rusty: Fix typo by @vax-r in #504
• INSTALL: Update Fedora installation docs by @1Naim in #501
• scx_stats: Add support for no-value user attributes and a bunch of ot… by @htejun in #505
• meson: Add github action to run veristat by @hodgesds in #494
• ci: Fix veristat pull request workflow by @hodgesds in #513
• docs: Update developer guide by @hodgesds in #512
• scx_layered: Fix uninitialized variable by @vax-r in #506
• scx_stats, scx_layered: Implement independent stats client sessions by @htejun in #514
• scx_stats/scripts/scxstats_to_openmetrics: Retry connection by @htejun in #516
• scx_layered: Fix verification failure by @htejun in #517
• scx_layered: Use topology for core selection by @hodgesds in #510
• scx_lavd: revise FlatTopology prettier by @multics69 in #507
• scx_lavd: fix a potential watchdog timeout error at multi-NUMA/CCX platforms by @multics69 in #508
• scx_lavd: add power profile options: --performance, --balanced, --powersave by @multics69 in #511
• ci: fix veristat for PRs by @hodgesds in #515
• ci: fix merge veristat cache generation by @hodgesds in #519
• ci: Fix cache directory by @hodgesds in #520
• scx_bpfland: topology awareness by @arighi in #509
• scx_bpfland: use scx_utils::Cpumask by @arighi in #522
• openrc: Add logrotate support for openrc systems by @Kawanaao in #523
• scx_layered: Add --run-example and enable CI testing by @htejun in #518
• scx_bpfland: allow to completely disable interactive classification by @arighi in #525
• scx_utils::cpumask,topology: Misc updates by @htejun in #527
• scx_rusty: Misc updates by @htejun in #526
• scx_layered: Fix core selection by @hodgesds in #524
• scx_bpfland: properly classify Intel Turbo Boost CPUs by @arighi in #528
• scx_utils::topology: Use lazy_static instead of LazyLock by @htejun in #530
• scx_bpfland: drop unused variable by @arighi in #531
• Version: v1.0.3 by @htejun in #532
• Version: Cargo.lock by @htejun in #533

New Contributors

• @gghh made their first contribution in #492
• @1Naim made their first contribution in #501

Full Changelog: v1.0.2...v1.0.3

v1.0.2

What's Changed

• scx_rusty: Pre-check task domain mask with pull domain mask by @vax-r in #425
• scx_utils: Add LLC id to CPU by @hodgesds in #434
• scx_rusty: Add mempolicy checks to rusty by @hodgesds in #364
• scx_bpfland: introduce dynamic nvcsw threshold by @arighi in #439
• scx_rusty: Remove skip_while in find_first_candidate by @vax-r in #435
• scx_layered: Add separate module for metrics by @hodgesds in #441
• layered: Don't dispatch to LO_FALLBACK_DSQ by @Byte-Lab in #442
• scx_lavd: overhaul the virtual deadline algorithm by @multics69 in #443
• scx_bpfland: adjust task time slice as a function of waiting tasks by @arighi in #444
• scx_rusty: Simplify LoadBalancer::populate_tasks_by_load() by @danielocfb in #445
• scx_layered: Add topology awareness for NUMA nodes and LLCs by @hodgesds in #446
• scx_layered: Add user and group layers by @hodgesds in #447
• rusty: Rework deadline as a signed sum by @Byte-Lab in #309
• Revert "rusty: Rework deadline as a signed sum" by @Byte-Lab in #450
• scx_bpfland: allow to specify negative values with --slice-us-lag by @arighi in #451
• lavd_lavd: initial support for AMP (asynmmetric multi-processor) architecture by @multics69 in #452
• scx_lavd: fix div by zero error in some installations by @multics69 in #456
• scx_lavd: support two-level scheduling for heavy-loaded cases (like bpfland) by @multics69 in #457
• scx_lavd: set correct size for cpu_ctx_stor by @arighi in #458
• scx_layered: Add per cpu layer iterator offset by @hodgesds in #459
• scx_lavd: misc updates by @multics69 in #460
• scx_layered: Fix enqueue fallback CPU selection by @hodgesds in #461
• scx_layered: Add support for disabling topology awareness by @hodgesds in #465
• scx_bpfland: always re-align task's vruntime to the global vruntime by @arighi in #463
• scripts: Add dsq latency script by @hodgesds in #466
• scx_lavd: improve the calculation of ineligibility duration by @multics69 in #464
• scx_lavd: Make FlatTopology::new() a bit prettier by @htejun in #467
• scx_rustland_core: fix missing import (timespec) by @arighi in #470
• scx_rustland_core alloc: Replaced RefCell with Mutex by @Kawanaao in #473
• scx_rustland_core: add support for musl by @arighi in #471
• scx_layered: Fix cred declaration by @hodgesds in #472
• scx_utils: Fix build args by @hodgesds in #474
• scx_rustland refactoring by @arighi in #468
• Add a tool to manage versions and synchronize crate dependency versions by @htejun in #478
• version-tool: Suppress spurious dependency version mismatch warning by @htejun in #479
• Bump versions for 1.0.2 release by @htejun in #480

New Contributors

• @Kawanaao made their first contribution in #473

Full Changelog: v1.0.1...v1.0.2

v1.0.1

What's Changed

• meson: fix RUSTFLAGS being appended incorrectly by @vnepogodin in #420
• scx_lavd: improve time slice and waker freq calculation by @multics69 in #421
• Sync to upstream kernel and bump to 1.0 by @htejun in #424
• systemd: Drop temporarily disabled schedulers from service by @ptr1337 in #428
• install_user_scheds: Skip packaging of scx_mitosis by @ptr1337 in #427
• ci: Use latest upstream kernel and exclude scx_flatcg and scx_pair from testing by @arighi in #431
• scx_bpfland: small improvements by @arighi in #429
• scx_utils: Display the tag value for nested counters in log_recorder by @jfernandez in #432
• Bump versions for 1.0.1 release by @htejun in #433

Full Changelog: v1.0.0...v1.0.1

v1.0.0

Notes

• Rebased on top of korg sched_ext/for-6.11 branch which is expected to be merged during the upcoming merge window.
• cgroup support temporarily dropped. scx_flatcg, scx_pair and scx_mitosis are disabled for the time being.
• DSQ iterator size changed. Schedulers that use DSQ iters built against earlier kernels won't work.
• This is the new compat baseline.

What's Changed

• rusty: Use cpumask kfuncs in cpumask_intersects_domain() by @Byte-Lab in #328
• scx: Unify loading and running boilerplate across rust schedulers by @htejun in #329
• scx_rustland_core: add extra debugging info to dispatch_task() by @arighi in #331
• scx.service: start service after graphical target by @sirlucjan in #332
• scx_rustland: introduce virtual time slice by @arighi in #333
• scx: update /etc/default/scx sample flags by @sirlucjan in #335
• scx_rustland: never use a time slice that exceeds the default value by @arighi in #336
• Bring rust scheduler's compat support to parity with C by @htejun in #337
• scx_lavd: core compaction for low power consumption by @multics69 in #338
• scx_layered: Improve yield, preemption and other behaviors by @htejun in #340
• uei: Pass skel to RESIZE_ARRAY() by @Byte-Lab in #344
• scx_utils: Add CPU freq transition latency by @hodgesds in #343
• scx_rusty: Elimate data races possibility for domain min_vruntime by @vax-r in #341
• scheds: Add scx_mitosis scheduler by @dschatzberg in #339
• mitosis: Fix build by @dschatzberg in #348
• Support LLVM_VERSION_SUFFIX in clang version parsing regex by @vimproved in #350
• scx_lavd: properly calculate task's runtime after suspend/resume by @multics69 in #349
• common: Add css iter forward declares by @dschatzberg in #352
• scheds: Add scx_mitosis scheduler to /etc/default/scx by @sirlucjan in #346
• scx_lavd: improve CPU frequency scaling by @multics69 in #351
• scx_lavd: add the design of core compaction by @multics69 in #355
• scx.service: allow overriding scx variables by @Pprighi in #356
• scx.service: document scx override variables by @Pprighi in #357
• README: Add information about restoring default values by @sirlucjan in #358
• scx_rustland: prevent starvation by @arighi in #345
• scx_rlfifo: improve code usability for experiments by @arighi in #360
• common.bpf.h: Cosmetic changes by @htejun in #359
• scx_rustland_core: fix potential race in dispatch_task() by @arighi in #361
• Strip compat support by @htejun in #363
• scx_utils: Fix typos by @vax-r in #365
• rusty: Clean up some logic in rusty by @Byte-Lab in #347
• rusty: Make dom_xfer_task() a global prog by @Byte-Lab in #366
• scx/compat.bpf.h: Fix __COMPAT_scx_bpf_consume_task() and improve scx_qmap example by @htejun in #367
• scx_rusty: Refactor lookup operation for new_domc in task_set_domain by @vax-r in #362
• scx_lavd: misc performance tuning and code clean up by @multics69 in #368
• scx_lavd: properly check for idle CPUs in pick_cpu() by @arighi in #369
• scx_utils: Utilize Entry API for BTreeMap insertion by @vax-r in #372
• scx_lavd: Reuse can_task1_kick_task2 by @vax-r in #373
• scx_rustland_core: include buddy-alloc and refactor allocator code by @arighi in #374
• Add stress-ng to scheduler tests by @hodgesds in #292
• Simplifying pacman-hooks by @sirlucjan in #378
• Revert "scx_flatcg: Keep cgroup rb nodes stashed" by @htejun in #375
• Add topo.nr_cpu_ids() to Topology crate by @Byte-Lab in #379
• rusty: Integrate stats with the metrics framework by @jfernandez in #377
• scx_lavd: revising tunables for less-preemptive games by @multics69 in #383
• scx_rusty: Refactor ridx assignment in populate_tasks_by_load by @vax-r in #382
• scx_rusty: Pull domain status check by @vax-r in #381
• README: add a link to Changwoo's blog post on scx (part 2) by @multics69 in #385
• scx_lavd: revising tunables to reduce micro-stutters by @multics69 in #386
• scx_rustland_core: smooth performance by @arighi in #380
• Add After=graphical.target into service by @sirlucjan in #387
• scx_utils: Add log_recorder module for metrics-rs by @jfernandez in #384
• Add build-id to build process by @Byte-Lab in #371
• Revert "Add After=graphical.target into service" by @sirlucjan in #390
• scx_lavd: tweaks to avoid fork starvation by @multics69 in #391
• Revert "scx_rusty: Refactor ridx assignment in populate_tasks_by_load" by @Byte-Lab in #393
• scx_utils: clarify error about missing CONFIG_DEBUG_INFO_BTF by @arighi in #394
• scx_lavd: optimization for communicaiton-intensive workloads and heavily-overloaded cases by @multics69 in #395
• Update libbpf commit hash by @otteryc in #396
• meson: restore previous libbpf version and update bpftool by @arighi in #400
• meson: run cargo build in release mode when using plain buildtype by @vnepogodin in #401
• meson: check if commit exists in remote git repos by @arighi in #402
• meson: introduce serialize build option by @arighi in #399
• scheds: introduce scx_bpfland by @arighi in #388
• scx_bpfland: properly integrate with meson build by @arighi in #403
• scheds: Add scx_bpfland scheduler to /etc/default/scx by @sirlucjan in #404
• scx_rusty: fix stats map initialization by @arighi in #407
• mitosis: Update synchronization by @dschatzberg in #389
• scx_bpfland: support CPU hotplugging by @arighi in #408
• scx_bpfland: use the right cpumask to find any idle CPU by @arighi in #409
• scx_rustland_core: Remove unused variable by @vax-r in #413
• scx_bpfland: enhance performance consistency and predictability by @arighi in #410
• scx_flatcg: Fix_typo by @vax-r in #411
• sched_utils: Add log recorder format customization by @jfernandez in #397
• scx_flatcg: Make good use of __sync_fetch_and_sub() by @vax-r in #412
• scx_bpfland: additional stats and output improvements by @arighi in #415
• bpfland: small improvements by @arighi in #416
• scx_bpfland: mitigations and additional statistics by @arighi in #418
• scx_lavd: improve virtual deadline and current clock handling by @multics69 in #417

New Contributors

• @vimproved made their first contribution in #350
• @Pprighi made their first contribution in #356
• @otteryc made their first contribution in #396

Full Changelog: v0.1.10...v1.0.0

v0.1.10

What's Changed

• Sync to the latest kernel by @htejun in #253
• ci: Also include gcc-multilib to fix CI by @Byte-Lab in #256
• scx_rustland_core: relax compact unevictable memory constraint by @arighi in #255
• scx_rustland: bump up version to 0.0.6 by @arighi in #257
• Fix issue when CDPATH contains libbpf directory by @hodgesds in #259
• Update README with instructions for building against local libbpf by @hodgesds in #258
• scx_rusty: load balancing fixes by @danieljordan10 in #260
• Update README with Slack invite link by @hodgesds in #262
• Make scx_rusty interactive by @Byte-Lab in #261
• ci: enable kvm support in the github workflow by @arighi in #265
• common: Pull bpf_log2l() into helper function header by @Byte-Lab in #264
• INSTALL: Add instructions for Nix by @ptr1337 in #267
• README: Add missing link to Nix Install instructions by @ptr1337 in #268
• scx_lavd: support CPU frequency scaling by @multics69 in #263
• rusty: Support CPU hotplug onlining by @Byte-Lab in #266
• Fix typo by @vax-r in #271
• scx_rustland_core: use a BPF_MAP_TYPE_USER_RINGBUF to dispatch tasks by @arighi in #270
• systemd-service: Don't restart always by @ptr1337 in #273
• scx_lavd: support yield-based preemption by @multics69 in #274
• scx_utils: report an explicit error when another scheduler is running by @arighi in #276
• INSTALL.md: Add info about debug kernel on arch based by @ptr1337 in #277
• topology: Support CONFIG_NUMA=n in Topology crate by @Byte-Lab in #278
• rustland: reduce scheduling overhead by @arighi in #272
• scx_rustland: maximize CPU utilization by @arighi in #279
• scx_rustland: properly support offline CPUs by @arighi in #281
• Add pacman hooks for systemd by @sirlucjan in #282
• scx_lavd: add non-functional misc updates by @multics69 in #283
• Fix typo by @vax-r in #284
• scripts: Add script to measure runqlat for a process by @jfernandez in #285
• scripts: whitespace cleanup for process_runqlat.bt by @jfernandez in #288
• journal.conf: increase the size of the logs and drop unneeded options by @sirlucjan in #287
• Avoid redundant substraction in rsigmoid_u64 by @vax-r in #290
• scx_rustland: introduce low power mode by @arighi in #286
• Add remaining hotplug pieces by @Byte-Lab in #289
• Add missing skel.attach() calls by @htejun in #293
• Sync from kernel (73f4013eb1eb) by @htejun in #291
• scx_lavd: fix inconsistent indentation in main.bpf.c by @multics69 in #295
• Fix warnings by @Byte-Lab in #294
• meson: fix a build error for libbpf at release build by @multics69 in #297
• Build: Make -Werror non-default by @Byte-Lab in #302
• scx_simple: re-add __COMPAT_scx_bpf_switch_all() by @arighi in #298
• simple: Add comment explaining use of SHARED_DSQ by @Byte-Lab in #303
• meson: fix a build error for libbpf at release build by @sirlucjan in #301
• Add pacman hooks for openrc by @sirlucjan in #300
• scx_rustland: cleanups by @arighi in #299
• scx_flatcg: Correct content error in comment by @vax-r in #304
• scx_rustland: introduce fifo mode by @arighi in #305
• scx_rustland: fix fifo mode support by @arighi in #306
• scx_rustland: improve audio workload and performance predictability by @arighi in #307
• Reduce MAX_ENQUEUED_TASKS to fit percpu allocator by @RinHizakura in #310
• Update INSTALL.md with fedora c scheds info by @jordalgo in #311
• scx_central: Provide backward compability by @vax-r in #314
• scx_lavd: Enforce memory barrier in flip_sys_cpu_util by @vax-r in #318
• Add openSUSE installation notes by @frelon in #316
• Revert "scx_lavd: Enforce memory barrier in flip_sys_cpu_util" by @multics69 in #321
• scx_layered: Improve affn_viol handling and implement dump method by @htejun in #312
• scx_rustland_core: fix build error with musl by @arighi in #320
• Document the needed BPF kernel config by @aruhier in #323
• scx_lavd: Adding READ_ONCE()/WRITE_ONCE() macros by @vax-r in #322
• README: Adding dependencies to allow compilation by @sirlucjan in #326
• scx_rustland: get rid of --builtin-idle option by @arighi in #325
• Bump versions for a release by @htejun in #327

New Contributors

• @danieljordan10 made their first contribution in #260
• @ptr1337 made their first contribution in #267
• @vax-r made their first contribution in #271
• @jfernandez made their first contribution in #285
• @RinHizakura made their first contribution in #310
• @frelon made their first contribution in #316
• @aruhier made their first contribution in #323

Full Changelog: v0.1.9...v0.1.10

v0.1.9

What's Changed

• scx_lavd: Add .gitignore by @htejun in #215
• systemd: Move services to separate directory by @sirlucjan in #216
• scx_rustland_core: separate crate source code from assets by @arighi in #217
• scx_rustland_core: bump up version to 0.2 by @arighi in #219
• Gracefully handle hotplug in scx_rusty by @Byte-Lab in #218
• meson: Add missing path to libbpf_local_h. by @ThinkerYzu in #220
• meson.build: Update libbpf and bpftool version requirements by @htejun in #221
• Sync libbpf_h and libbpf_local_h by @jordalgo in #222
• scx_lavd: support preemption (in some scenarios) by @multics69 in #224
• Fix error typo by @dschatzberg in #225
• rusty: Allocate DSQ on appropriate NUMA node by @Byte-Lab in #226
• Small rusty cleanup by @Byte-Lab in #228
• rusty: Remove explicit padding by @Byte-Lab in #229
• README: update additional resources by @arighi in #230
• simple: Invoke __COMPAT_scx_bpf_switch_all(); by @Byte-Lab in #231
• lavd: Fix a few typos by @Byte-Lab in #232
• layered: Fix init_task by @Byte-Lab in #233
• scheds-rust: build rust schedulers in sequence by @takase1121 in #236
• rustland: enable preemption by @arighi in #235
• layered: Add ability to match by process name by @Byte-Lab in #240
• topology: Don't allocate on calls to span() by @Byte-Lab in #241
• Add CPU frequency related helpers and extend scx_layered by @hodgesds in #239
• layered: Make layered backwards compat with cpufreq by @Byte-Lab in #243
• scx_rustland: reduce overhead by caching host topology by @arighi in #238
• scx_lavd: fix copyright information by @multics69 in #245
• scx_lavd: use c_char consistently by @arighi in #246
• rustland: bump up version by @arighi in #248
• scx-utils: bump up version to 0.8.0 by @arighi in #249
• scx_lavd: always inline submit_task_ctx to make the verifier happy by @multics69 in #247
• scx_lavd: replesih time slice at ops.running() only when necessary by @multics69 in #250
• Bump versions to prepare for a release by @htejun in #252

New Contributors

• @ThinkerYzu made their first contribution in #220
• @takase1121 made their first contribution in #236
• @hodgesds made their first contribution in #239

Full Changelog: v0.1.8...v0.1.9

v0.1.8

What's Changed

• README: drop reference to old ABI /sys/kernel/debug/sched/ext by @arighi in #140
• scx_rustland: improve kernel/user-space communication by @arighi in #142
• scx_rustland: prevent misaligned pointer dereference by @arighi in #144
• rust: Add topology module to utils crate by @Byte-Lab in #143
• scx_rustland: additional comand line options by @arighi in #145
• Add libbpf logging to rust schedulers by @jordalgo in #141
• scx: Demote panic! to warn! in topology crate by @Byte-Lab in #146
• layered: Fix static configuration, and dispatch for Grouped layers by @Byte-Lab in #148
• Refresh after attach by @Byte-Lab in #150
• scx_layered: Add MATCH_NICE_EQUALS match kind by @davemarchevsky in #149
• Add cpumask.rs crate by @Byte-Lab in #152
• Topology refactor by @Byte-Lab in #154
• scheds/sync-to-kernel.sh: Warn and skip if destination file is missing instead of failing by @htejun in #156
• scx_rustland: cpu topology refactoring by @Byte-Lab in #155
• common: Cosmetic change for consistency by @htejun in #157
• sync-to-kernel.sh: Sync scx_central and scx_flatcg by @htejun in #158
• ci: eclude scx_qmap and scx_userland from testing by @arighi in #160
• Gate cargo build options behind 'enable_rust' by @jordalgo in #162
• Add new infeasible.rs crate by @Byte-Lab in #159
• Introduce scx_rustland_core: a generic layer to implement user-space schedulers in Rust by @arighi in #161
• scx: update /etc/default/scx by @sirlucjan in #164
• build: limit the maximum amount of parallel cargo build by @arighi in #165
• Add libbpf as a submodule by @jordalgo in #163
• Revert "Merge pull request #163 from jordalgo/libbpf-submodule" by @htejun in #166
• Revert "Merge pull request #165 from sched-ext/reduce-rust-build-load" by @htejun in #167
• Add libbpf as a submodule (take 2) by @jordalgo in #168
• scx_rustland_core: API improvements by @arighi in #169
• meson-scripts/build_libbpf: Accommodate meson setting CC to "ccache $COMPILER" by @htejun in #170
• scx_rlfifo: warn user about performance by @arighi in #173
• Always build libbpf as a PIE by @jordalgo in #172
• Libbpf - add BUILD_STATIC_ONLY flag by @jordalgo in #174
• [trivial] docs: Update rhone link by @Byte-Lab in #175
• Remove libbpf as a submodule by @jordalgo in #177
• Update README.md by @htejun in #182
• scx_rustland_core: use new consume_raw() libbpf-rs API by @arighi in #180
• scx_rustland: interactive tuning by @arighi in #181
• Revert "scx_rustland_core: use new consume_raw() libbpf-rs API" by @arighi in #183
• Fetch and build bpftool by default by @jordalgo in #179
• rusty: Implement NUMA-aware load balancing by @Byte-Lab in #178
• scx_flatcg: Keep cgroup rb nodes stashed by @davemarchevsky in #33
• scx_layered: Implement layer properties exclusive and min_exec_us by @htejun in #185
• scx_layered: Make config json assume default vaules for unspecified fields by @htejun in #187
• Better parsing for clang version by @leitao in #190
• scx_rustland: mitigate sub-optimal performance with offline CPUs by @arighi in #189
• rusty: Account for disabled but offline CPUs by @Byte-Lab in #191
• topology: support single CPU systems by @arighi in #188
• scx_lavd: add LAVD (Latency-criticality Aware Virtual Deadline) scheduler by @multics69 in #192
• scx: update /etc/default/scx by @sirlucjan in #193
• scx_lavd: addressed comments from PR #192 by @multics69 in #194
• topology: Fall back to cache 0 by @Byte-Lab in #196
• layered: Make helper functions static by @Byte-Lab in #198
• scx_lavd: improve virtual deadline calculation by @multics69 in #197
• layered: Use TLS map instead of hash map by @Byte-Lab in #200
• scx_lavd: Clean up task state transition tracking by @htejun in #199
• scx_lavd: fix merge conflicts between PR 197 and 199 by @multics69 in #201
• scx_lavd: directly accumulate task's runtimes for consecutive runnings by @multics69 in #204
• rusty: Check LOCAL_DSQ length for WAKE_SYNC by @Byte-Lab in #206
• scx: Apply API updates from sched_ext by @htejun in #207
• Update cachyos-keyring by @sirlucjan in #208
• Update Arch install instruction in README.md by @htejun in #209
• Add install instructions for Fedora by @jordalgo in #210
• Doc & build: Warn about sccache by @htejun in #212
• openrc init support by @nycko123 in #211
• ci: make test build more robust by @arighi in #213
• scx_rustland_core: re-introduce consume_raw() libbpf-rs API by @arighi in #214

New Contributors

• @davemarchevsky made their first contribution in #149
• @leitao made their first contribution in #190
• @nycko123 made their first contribution in #211

Full Changelog: v0.1.7...v0.1.8