kernel/linux.git/tools/testing/selftests/sched_ext, branch v6.18.21

selftests/sched_ext: Remove duplicate sched.h header

2025-08-11T18:24:08+00:00

./tools/testing/selftests/sched_ext/hotplug.c: sched.h is included more than once. Reported-by: Abaci Robot Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=22941 Signed-off-by: Jiapeng Chong Acked-by: Andrea Righi Signed-off-by: Tejun Heo

Merge tag 'sched_ext-for-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext

2025-07-31T23:29:46+00:00

Pull sched_ext updates from Tejun Heo: - Add support for cgroup "cpu.max" interface - Code organization cleanup so that ext_idle.c doesn't depend on the source-file-inclusion build method of sched/ - Drop UP paths in accordance with sched core changes - Documentation and other misc changes * tag 'sched_ext-for-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext: sched_ext: Fix scx_bpf_reenqueue_local() reference sched_ext: Drop kfuncs marked for removal in 6.15 sched_ext, rcu: Eject BPF scheduler on RCU CPU stall panic kernel/sched/ext.c: fix typo "occured" -> "occurred" in comments sched_ext: Add support for cgroup bandwidth control interface sched_ext, sched/core: Factor out struct scx_task_group sched_ext: Return NULL in llc_span sched_ext: Always use SMP versions in kernel/sched/ext_idle.h sched_ext: Always use SMP versions in kernel/sched/ext_idle.c sched_ext: Always use SMP versions in kernel/sched/ext.h sched_ext: Always use SMP versions in kernel/sched/ext.c sched_ext: Documentation: Clarify time slice handling in task lifecycle sched_ext: Make scx_locked_rq() inline sched_ext: Make scx_rq_bypassing() inline sched_ext: idle: Make local functions static in ext_idle.c sched_ext: idle: Remove unnecessary ifdef in scx_bpf_cpu_node()

selftests/sched_ext: Fix exit selftest hang on UP

2025-07-03T16:44:13+00:00

On single-CPU systems, ops.select_cpu() is never called, causing the EXIT_SELECT_CPU test case to wait indefinitely. Avoid the stall by skipping this specific sub-test when only one CPU is available. Reported-by: Phil Auld Fixes: a5db7817af780 ("sched_ext: Add selftests") Signed-off-by: Andrea Righi Reviewed-by: Phil Auld Tested-by: Phil Auld Signed-off-by: Tejun Heo

sched_ext: Add support for cgroup bandwidth control interface

2025-06-21T03:03:51+00:00

From 077814f57f8acce13f91dc34bbd2b7e4911fbf25 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 13 Jun 2025 15:06:47 -1000 - Add CONFIG_GROUP_SCHED_BANDWIDTH which is selected by both CONFIG_CFS_BANDWIDTH and EXT_GROUP_SCHED. - Put bandwidth control interface files for both cgroup v1 and v2 under CONFIG_GROUP_SCHED_BANDWIDTH. - Update tg_bandwidth() to fetch configuration parameters from fair if CONFIG_CFS_BANDWIDTH, SCX otherwise. - Update tg_set_bandwidth() to update the parameters for both fair and SCX. - Add bandwidth control parameters to struct scx_cgroup_init_args. - Add sched_ext_ops.cgroup_set_bandwidth() which is invoked on bandwidth control parameter updates. - Update scx_qmap and maximal selftest to test the new feature. Signed-off-by: Tejun Heo

selftests/sched_ext: Update test enq_select_cpu_fails

2025-05-21T17:35:58+00:00

With commit 08699d20467b6 ("sched_ext: idle: Consolidate default idle CPU selection kfuncs") allowing scx_bpf_select_cpu_dfl() to be invoked from multiple contexts, update the test to validate that the kfunc behaves correctly when used from ops.enqueue() and via BPF test_run. Additionally, rename the test to enq_select_cpu, dropping "fails" from the name, as the logic has now been inverted. Signed-off-by: Andrea Righi Signed-off-by: Tejun Heo

selftests/sched_ext: Add test for scx_bpf_select_cpu_and() via test_run

2025-05-20T20:24:17+00:00

Update the allowed_cpus selftest to include a check to validate the behavior of scx_bpf_select_cpu_and() when invoked via a BPF test_run call. Signed-off-by: Andrea Righi Signed-off-by: Tejun Heo

selftests/sched_ext: Add test for scx_bpf_select_cpu_and()

2025-04-07T17:13:52+00:00

Add a selftest to validate the behavior of the built-in idle CPU selection policy applied to a subset of allowed CPUs, using scx_bpf_select_cpu_and(). Signed-off-by: Andrea Righi Signed-off-by: Tejun Heo

Merge tag 'sched-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2025-03-25T04:28:12+00:00

Pull scheduler updates from Ingo Molnar: "Core & fair scheduler changes: - Cancel the slice protection of the idle entity (Zihan Zhou) - Reduce the default slice to avoid tasks getting an extra tick (Zihan Zhou) - Force propagating min_slice of cfs_rq when {en,de}queue tasks (Tianchen Ding) - Refactor can_migrate_task() to elimate looping (I Hsin Cheng) - Add unlikey branch hints to several system calls (Colin Ian King) - Optimize current_clr_polling() on certain architectures (Yujun Dong) Deadline scheduler: (Juri Lelli) - Remove redundant dl_clear_root_domain call - Move dl_rebuild_rd_accounting to cpuset.h Uclamp: - Use the uclamp_is_used() helper instead of open-coding it (Xuewen Yan) - Optimize sched_uclamp_used static key enabling (Xuewen Yan) Scheduler topology support: (Juri Lelli) - Ignore special tasks when rebuilding domains - Add wrappers for sched_domains_mutex - Generalize unique visiting of root domains - Rebuild root domain accounting after every update - Remove partition_and_rebuild_sched_domains - Stop exposing partition_sched_domains_locked RSEQ: (Michael Jeanson) - Update kernel fields in lockstep with CONFIG_DEBUG_RSEQ=y - Fix segfault on registration when rseq_cs is non-zero - selftests: Add rseq syscall errors test - selftests: Ensure the rseq ABI TLS is actually 1024 bytes Membarriers: - Fix redundant load of membarrier_state (Nysal Jan K.A.) Scheduler debugging: - Introduce and use preempt_model_str() (Sebastian Andrzej Siewior) - Make CONFIG_SCHED_DEBUG unconditional (Ingo Molnar) Fixes and cleanups: - Always save/restore x86 TSC sched_clock() on suspend/resume (Guilherme G. Piccoli) - Misc fixes and cleanups (Thorsten Blum, Juri Lelli, Sebastian Andrzej Siewior)" * tag 'sched-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits) cpuidle, sched: Use smp_mb__after_atomic() in current_clr_polling() sched/debug: Remove CONFIG_SCHED_DEBUG sched/debug: Remove CONFIG_SCHED_DEBUG from self-test config files sched/debug, Documentation: Remove (most) CONFIG_SCHED_DEBUG references from documentation sched/debug: Make CONFIG_SCHED_DEBUG functionality unconditional sched/debug: Make 'const_debug' tunables unconditional __read_mostly sched/debug: Change SCHED_WARN_ON() to WARN_ON_ONCE() rseq/selftests: Fix namespace collision with rseq UAPI header include/{topology,cpuset}: Move dl_rebuild_rd_accounting to cpuset.h sched/topology: Stop exposing partition_sched_domains_locked cgroup/cpuset: Remove partition_and_rebuild_sched_domains sched/topology: Remove redundant dl_clear_root_domain call sched/deadline: Rebuild root domain accounting after every update sched/deadline: Generalize unique visiting of root domains sched/topology: Wrappers for sched_domains_mutex sched/deadline: Ignore special tasks when rebuilding domains tracing: Use preempt_model_str() xtensa: Rely on generic printing of preemption model x86: Rely on generic printing of preemption model s390: Rely on generic printing of preemption model ...

sched/debug: Remove CONFIG_SCHED_DEBUG from self-test config files

2025-03-19T21:23:24+00:00

We leave most of the defconfigs alone (there's over 70 of them), but let's remove CONFIG_SCHED_DEBUG from the scheduler self-test Kconfig files. Signed-off-by: Ingo Molnar Cc: Peter Zijlstra Cc: Juri Lelli Cc: Vincent Guittot Cc: Dietmar Eggemann Cc: Steven Rostedt Cc: Ben Segall Cc: Mel Gorman Cc: Valentin Schneider Cc: Linus Torvalds Link: https://lore.kernel.org/r/Z9szt3MpQmQ56TRd@gmail.com

sched_ext: Merge branch 'for-6.14-fixes' into for-6.15

2025-03-03T18:02:22+00:00

Pull for-6.14-fixes to receive: 9360dfe4cbd6 ("sched_ext: Validate prev_cpu in scx_bpf_select_cpu_dfl()") which conflicts with: 337d1b354a29 ("sched_ext: Move built-in idle CPU selection policy to a separate file") Signed-off-by: Tejun Heo