v1.0.9

What's Changed

• Sync with kernel sched_ext/for-6.14 by @htejun in #1101
• Crash after wake-up from hibernate: panicked at scheds/rust/scx_bpfla… by @mschaaf in #1106
• scx_lavd: Reuse bpf_ktime_get_ns() as many as possible by @multics69 in #1107
• scx_rustland_core: minor fixes by @arighi in #1105
• docs: Update gentoo installation instructions by @hodgesds in #1114
• common.bpf.h: Suppress generated prototypes in vmlinux.h by @htejun in #1115
• scx_lavd: Optimize autopilot mode for ARM platform by @multics69 in #1112
• scx_lavd: Add a fast path to pick_idle_cpu() when overloaded by @multics69 in #1117
• scx_lavd: Change the default time slice to 5 msec by @multics69 in #1119
• scx_layered: Fix lifetime variable related compile warnings by @htejun in #1122
• scx_lavd: Ensure task stealing from all compute domains by @multics69 in #1125
• prepare codebase for using arenas with Rust schedulers by @etsal in #1121
• scx_flash: Explicitly return in "fexit_vfs_fsync_range" by @vax-r in #1123
• scx_layered: Fix open layer handling by @htejun in #1124
• scx_lavd: Prioritize a migration-disabled task by @multics69 in #1126
• scx_layered: Implement layer property disallow_preempt_after_us by @htejun in #1129
• scx_layered: Open layer owned protection updates by @htejun in #1131
• lib/sdt_task.c: separate generic allocation code from task_ctx allocation by @etsal in #1130
• lib/sdt_alloc: fix LLVM19 compilation error by @etsal in #1134
• scx_bpfland: support !CONFIG_SMP kernels by @arighi in #1135
• scx_flash: Option for userspace lock boosting by @vax-r in #1136
• bpf_builder: emit warnings from clang by @JakeHillion in #1138
• rustland_core: clean up unused functions by @JakeHillion in #1141
• scx_bpfland: improve/simplify deadline by @arighi in #1137
• scx_rusty: prevent scheduling bubbles on kernels >= 6.12 by @arighi in #1139
• scx_flash: prevent scheduling bubbles on kernels >= 6.12 by @arighi in #1142
• mitosis: add missing return to select_cpu by @JakeHillion in #1140
• scx_utils: emit compilation warning when compiling multiple *.bpf.c files by @etsal in #1146
• scx_layered: fix compilation warnings by @etsal in #1147
• update README by @etsal in #1149
• build: Allow to build bpftool with clang by @vadorovsky in #1144
• lib/sdt_data: Support allocators for large structs by @etsal in #1150
• Enable Link-Time Optimization (LTO) for the Rust part by @zamazan4ik in #1011
• scxtop: Add scxtop tui by @hodgesds in #1154
• [scx] fix ci by @likewhatevs in #1157
• scx_lavd: Add a fast path for a migration-disabled task in pick_idle_cpu() by @multics69 in #1156
• scxtop: Add scheduler view to llc/node views by @hodgesds in #1159
• meson: do not link BPF library into C schedulers by default by @etsal in #1158
• lib/sdt_alloc: replace bpf_for with can_loop by @etsal in #1161
• scx_bpfland: do not allow per-CPU kthread to preempt other tasks by @arighi in #1148
• scxtop: Add additional bpf kprobes by @hodgesds in #1164
• scx_layered: Add pid namespace layer matching by @hodgesds in #1162
• docs: update nix install docs by @JohnRTitor in #1163
• lib: remove header install step now that headers are in scheds/include by @etsal in #1165
• scx_bpfland: improve robustness with real-time tasks and throughput by @arighi in #1166
• scx_rusty: use arena allocations for struct task_ctx by @etsal in #1133
• docs: Add scxtop to the developer docs by @hodgesds in #1169
• INSTALL.md: update for openSUSE by @sirlucjan in #1172
• scheds: Use crate version for --version by @frelon in #1173
• scxtop: Refactor bpf event handling and TUI fixes by @hodgesds in #1174
• scx_utils: addressing few clippy build warnings. by @devnexen in #1179
• scxtop: Fix attach on newer kernels by @hodgesds in #1180
• sdt_task: Cleanup formatting by @hodgesds in #1183
• scheds: Sync scx schedulers with the kernel changes: time_helpers and scx_bpf_now() by @multics69 in #1178
• scx_utils: Fix UserExitInfo::new() usage. by @devnexen in #1181
• scxtop: Add barchart to node view by @hodgesds in #1176
• scxtop: Add CPU frequency to default sparkline view by @hodgesds in #1177
• scx_utils: few code simplifications. by @devnexen in #1184
• scx_bpfland: avoid starvation of per-CPU tasks by @arighi in #1185
• scxtop: Fix node barchart by @hodgesds in #1186
• lib/sdt_alloc: rename sdt_arena_verify to avoid confusion by @etsal in #1187
• Revert gh1181 by @devnexen in #1189
• Code simpl2 by @devnexen in #1190
• scxtop: Collect uncore frequency by @hodgesds in #1191
• code simplifications, using more modern construct when possible. by @devnexen in #1192
• scx_rustland_core: fix static mutable reference usage warning (BUF). by @devnexen in #1193
• scx_layered: Fix dump_layer_cpumask() by @htejun in #1194
• Fix partialord warnings by @devnexen in #1196
• Code simpl4 by @devnexen in #1197
• scx_central: fix cpu affinity corrupted allocation (glibc). by @devnexen in #1198
• scxtop: code simplifications and little optimisation uncore freq file… by @devnexen in #1205
• scxtop: code simplifications and reduction of heap allocations for perf by @devnexen in #1208
• scx_utils: fix gpu-topology build by @devnexen in #1210
• scx_rusty: Move domains into arenas by @etsal in #1170
• scx_layered: add rule for matching thread to name change by @etsal in #1203
• scx_rusty: Cleanup naming by @etsal in #1213
• scxtop: proposing to add bus-cycles event. by @devnexen in #1217
• scxtop: Cleanup event intialization by @hodgesds in #1218
• meson: Install rust projects in tools dir by @frelon in #1219
• scx_lavd: Use time_delta() for clock difference calculation by @multics69 in #1222
• scx_layered: Implement allow_node_aligned layer property by @htejun in #1215
• scxtop: Add ability to select perf events by @hodgesds in #1220
• scx_bpfland: improvements by @arighi in #1224
• docs: Update tumbleweed installation steps by @frelon in #1226
• scx_lavd: Optimize the use of idle CPUs by @multics69 in #1223
• scxtop: update help display with last changes (perf event scrolling). by @devnexen in #1227
• scx_layered: Add matcher for when tgid is or is not equal to pid by @likewhatevs in #1204
• scxtop: Fix scroll on page up by @hodgesds in #1230
• scx_layered: fixes for MATCH_SCXCMD_JOIN by @etsal in #1232
• scxtop: Add event to default list after selection by @hodgesds in #1233
• scx_layered: Document the CmdJoin layer by @etsal in #1235
• scx_loader: Avoid race condition with start_scheduler by @taoky in #1225
• scxtop: Fill render area by setting max events by @hodgesds ...

v1.0.8

What's Changed

• version: v1.0.7 by @htejun in #1063
• scripts: Refactor vtime_dist script by @hodgesds in #1056
• scx_layered: Put all tasks with custom affinities into the hi fallbak DSQs by @htejun in #1064
• scripts: Add slicesnoop script by @hodgesds in #1057
• scx_layered: Refactor dsq_lat script by @hodgesds in #1058
• scx_bpfland: do not rely on scx_utils::autopower by @arighi in #1066
• scx: add ci job to test rolling stable by @likewhatevs in #1049
• scx: add rustfmt.toml files to avoid lookup to $HOME/.rustfmt.toml by @likewhatevs in #1069
• scx_layered: Make low fallback DSQs useful and other changes by @htejun in #1076
• docs: Update installation notes for Ubuntu by @arighi in #1075
• meson: Add scx_lib dep to gen_bpf_o by @frelon in #1067
• scx_lib: use the proper bpftool by @arighi in #1071
• scx_layered: handle nr_to_free calculation by @luigidematteis in #1073
• scripts: Add scxtop by @hodgesds in #1078
• Fixes for dsq_lat.bt by @samuelnair in #1077
• scx_loader: provide library crate to be used by other crates by @vnepogodin in #1070
• readme: specify cargo install --locked be used by @likewhatevs in #1079
• only compile library when using recent bpftool versions by @etsal in #1080
• fix header install path for library by @etsal in #1081
• scx_utils: Remove log_recorder by @htejun in #1084
• scx_layered, cpumask, topology: Cleanups by @htejun in #1083
• cpumask, scx_layered: Clean up Cpumask iterator by @htejun in #1085
• scx_layered: Implement empty LLC draining by @htejun in #1092
• scripts: Refactor scxtop by @hodgesds in #1088
• scx_layered: queued_runtime tracking bug fix and disable xllc_mig_min_us by default by @htejun in #1093
• Install: Rework Arch Linux section by @ptr1337 in #1095
• Etsal/bump req bpftool version by @etsal in #1091
• scx_layered: Refactor proximity map iteration by @hodgesds in #1086
• bump libbpf-rs version to 0.24.8, specify libbpf-sys version 1.4.6+1.4.7 by @etsal in #1089
• multiple compilation units in Rust by @etsal in #1090
• scx_bpfland: server workload improvements by @arighi in #1094
• scx_loader: add mode for server-oriented workloads by @vnepogodin in #1096
• scx_layered: Improve layer core growth algos by @hodgesds in #1098
• scx_layered: Make layered work in pid namespaces by @hodgesds in #1099
• scx_loader: fix recursion of type convertion by @vnepogodin in #1100
• scx_layered: Add pid namespace layer matching by @hodgesds in #1103
• fix missing rerun-if-changed statements by @etsal in #1108
• version: 1.0.8 by @htejun in #1110

Full Changelog: v1.0.7...v1.0.8

v1.0.7

What's Changed

• introduce CO:RE enum readers and use them for scx_central by @etsal in #894
• add CONFIG_IKCONFIG_PROC to ci kconfig by @likewhatevs in #900
• add CONFIG_IKCONFIG to ci Kconfig and bump cache ver by @likewhatevs in #905
• scx_layered: Add fallback DSQ cost accounting by @hodgesds in #896
• scx_layered: Fix verifier issue when tracing by @hodgesds in #906
• scx_lavd: update cur_logical_clk atomically by @multics69 in #903
• scx_lavd: drop padding in cpdom_cpumask, which was a workaround by @multics69 in #904
• scx_loader: tune scx_bpfland default options by @arighi in #907
• scx_layered: Fix verifier issue on older kernels by @hodgesds in #910
• scx_layered: Use layer idle_smt option by @hodgesds in #911
• layered/topo: lift layer specific checks out of per-LLC loop by @JakeHillion in #908
• scx_layered: Cleanup cpumask by @hodgesds in #912
• scx_layered: Add fallback costs to dump by @hodgesds in #913
• scx_lavd: docs: fix typos by @LohithCV in #915
• scx_layered: Work around older kernels choking on function calls from… by @htejun in #916
• scx_layered: add timer antistall by @likewhatevs in #890
• scx_layered: Fix error in dispatch consumption by @hodgesds in #920
• scx_layered: Add helper for layer slice duration by @hodgesds in #918
• scx_layered: Fix formatting by @hodgesds in #921
• scx_layered: Fix dump format by @hodgesds in #922
• scx_layered: Fix cost accounting for fallback dsqs by @hodgesds in #923
• scx_layered: Consume from local LLCs for dispatch by @hodgesds in #919
• scx_layered: Fix formatting by @hodgesds in #925
• layered: split out common parts of LayerKind by @JakeHillion in #926
• scheds: introduce scx_flash by @arighi in #924
• fix compile errors by @purplewall1206 in #928
• scx_layered: Perf improvements and a bug fix by @htejun in #929
• scx_layered: Don't limit antistall execution to layered_cpumask by @htejun in #932
• scx_layered: Fix verifier issues on older kernels by @hodgesds in #933
• scx_layered: Cleanups around topology handling by @htejun in #934
• scx_lavd: Factor the task's runtime more aggressively in a deadline calculation by @multics69 in #931
• scx_layered: Work around verification failure in antistall_set() on o… by @htejun in #939
• scx_loader: add scx_flash as supported scheduler by @vnepogodin in #942
• [RFC] scx_layered: Add netdev IRQ balancing by @hodgesds in #930
• scx_loader: update docs by @sirlucjan in #947
• replace goto with unrolled loop in antistall_set by @JakeHillion in #943
• scx_utils/scx_layered: bump to 1.0.7 by @JakeHillion in #949
• scx_layered: Use PROG_RUN for cpumask updates by @hodgesds in #950
• scx_lavd: Optimize the layout of struct task_ctx by @multics69 in #952
• cargo fmt to match ci by @JakeHillion in #953
• Merge pull request #953 from JakeHillion/pr953 by @JakeHillion in #954
• rust-toolchain: init file by @JakeHillion in #955
• scx_layered: Remove high fallback dsq budget check by @hodgesds in #956
• scx_lavd: Do not exclude exiting tasks by @multics69 in #957
• scx_rustland_core: proactively wake up CPUs when selected by user space by @arighi in #946
• docs: Fix link to Gentoo installation instructions by @kostadinsh in #962
• utils: add powerpc64le to arch map by @frelon in #960
• scx_layered: Reimplement CPU allocation and some other fixes by @htejun in #958
• scx_rusty: Fix verifier errors on older kernels by @hodgesds in #963
• scx_layered: select_cpu() fixes and updates by @htejun in #964
• scx_lavd: Boost time slice more generously by @multics69 in #959
• scx_lavd: Optimize performance criticality calculation by @multics69 in #968
• scx_lavd: Optimize the cpuc_ctx layout for cache friendliness by @multics69 in #969
• topology: Make it more consistent by @htejun in #967
• scx_layered: Reimplement try_preempt() by @htejun in #970
• scx_lavd: Optimize preemption by @multics69 in #971
• scx_layered: Fix verifier errors on big/little by @hodgesds in #972
• scx_layered: More cleanups and an antistall fix by @htejun in #973
• scx_bpfland: restart on energy profile change by @arighi in #974
• scx_lavd: add tunables for adjusting time slices by @multics69 in #975
• scx_layered: Refactor layered initialization by @hodgesds in #976
• scx_layered: Refactor CPU initialization by @hodgesds in #977
• scx_lavd: Replace bpf_get_smp_processor_id() to cpuc->cpu_id by @multics69 in #979
• scx_layered: Fix missing layered->id init by @htejun in #978
• meson: Install scx header files by @frelon in #961
• scx_layered: Track owned/open execution times and per-LLC-layer stats by @htejun in #980
• scx_layered: Refactor layer growth order by @hodgesds in #965
• scx_loader: restart scheduler upon fail by @vnepogodin in #983
• scx_lavd: Minor code clean up by @multics69 in #984
• Introduce for_each_possible_cpu() for_each_online_cpu() iterators by @abrehman94 in #985
• scx_utils: Add core_id/llc_id to topology as a unique identifiers by @hodgesds in #982
• scheds: use llc id by @arighi in #993
• fix document generation by @likewhatevs in #992
• scripts: Add bpftrace script to trace CPU frequency by @hodgesds in #995
• scx_lavd: Limit the slice extension of a lock holder by @multics69 in #990
• scx_layered: Implement in-layer execution protection to replace cost based fairness by @htejun in #996
• scx_layered: Reimplement layered_dispatch() by @htejun in #997
• scx_bpfland: dump cache_id_map in ascending order by @mmz-zmm in #999
• scx_layered: Fix idle selection on big/little by @hodgesds in #1007
• scx_utils: remove use of deprecated bindgen API; require bindgen >=0.69 by @luigidematteis in #1002
• scx_layered: Prioritize sched userspace and fix owned execution protection by @htejun in #1008
• scx_layered: State tracking updates and layer sizing related fixes by @htejun in #1012
• Fix build on non-x86 architectures by @hack3ric in #1005
• scx_lavd: Load balancing across compute domains by @multics69 in #1000
• scx_layered: Deprecate idle_smt layer config by @htejun in #1013
• [RFC] scx_lavd: Fetch active profile from power-profiles-daemon dbus interface when using autopower by @ruihe774 in #1017
• vmlinux: Increase cpumask size in vmlinux.h for all arch by @multics69 in #1016
• ignore ctags files by @etsal in #1021
• scx: fix build by @likewhatevs in #1020
• scx: fix pages build by @likewhatevs in #1025
• scx: enable using sccache by @likewhatevs in #1018
• scx_layered: Make vtime_now per-LLC by @htejun in #1026
• docs: Add bpftop to developer guide by @hodgesds in https://github.com/sched-ext/scx...

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