Tejun Heo b7975c4869 sched_ext: Make explicit scx_task_iter_relock() calls unnecessary ...

During tasks iteration, the locks can be dropped using
scx_task_iter_unlock() to perform e.g. sleepable allocations. Afterwards,
scx_task_iter_relock() has to be called prior to other iteration operations,
which is error-prone. This can be easily automated by tracking whether
scx_tasks_lock is held in scx_task_iter and re-acquiring when necessary. It
already tracks whether the task's rq is locked after all.

- Add scx_task_iter->list_locked which remembers whether scx_tasks_lock is
  held.

- Rename scx_task_iter->locked to scx_task_iter->locked_task to better
  distinguish it from ->list_locked.

- Replace scx_task_iter_relock() with __scx_task_iter_maybe_relock() which
  is automatically called by scx_task_iter_next() and scx_task_iter_stop().

- Drop explicit scx_task_iter_relock() calls.

The resulting behavior should be equivalent.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Andrea Righi <arighi@nvidia.com>

2025-09-03 11:33:28 -10:00

..

bpf

bpf: Fix memory leak of bpf_scc_info objects

2025-08-02 09:04:57 -07:00

cgroup

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

2025-07-31 16:04:19 -07:00

configs

configs/hardening: Enable CONFIG_INIT_ON_FREE_DEFAULT_ON

2025-07-21 21:41:57 -07:00

debug

Merge tag 'tty-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2025-04-02 18:17:33 -07:00

dma

dma-contiguous: hornor the cma address limit setup by user

2025-06-12 08:38:40 +02:00

entry

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2025-07-30 17:14:01 -07:00

events

perf/core: Prevent VMA split of buffer mappings

2025-08-05 21:55:29 +02:00

futex

futex: Remove support for IMMUTABLE

2025-07-11 16:02:01 +02:00

gcov

kbuild: require gcc-8 and binutils-2.30

2025-04-30 21:53:35 +02:00

irq

genirq/test: Resolve irq lock inversion warnings

2025-08-06 10:29:48 +02:00

kcsan

kcsan: test: Initialize dummy variable

2025-07-23 08:51:32 +02:00

livepatch

sched,livepatch: Untangle cond_resched() and live-patching

2025-05-14 13:16:24 +02:00

locking

Merge tag 'mm-nonmm-stable-2025-08-03-12-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2025-08-03 16:23:09 -07:00

module

Merge tag 'mm-stable-2025-08-03-12-35' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2025-08-05 16:02:07 +03:00

power

Merge tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernel

2025-07-30 19:26:49 -07:00

printk

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

2025-08-04 10:54:36 -07:00

rcu

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

2025-07-31 16:29:46 -07:00

sched

sched_ext: Make explicit scx_task_iter_relock() calls unnecessary

2025-09-03 11:33:28 -10:00

time

Merge tag 'bitmap-for-6.17' of https://github.com/norov/linux

2025-07-31 16:52:32 -07:00

trace

Merge tag 'mm-nonmm-stable-2025-08-03-12-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2025-08-03 16:23:09 -07:00

unwind

unwind: Finish up unwind when a task exits

2025-07-31 10:20:11 -04:00

.gitignore

kheaders: rebuild kheaders_data.tar.xz when a file is modified within a minute

2025-06-24 20:30:37 +09:00

acct.c

acct: block access to kernel internal filesystems

2025-02-12 12:24:16 +01:00

async.c

…

audit_fsnotify.c

…

audit_tree.c

replace collect_mounts()/drop_collected_mounts() with a safer variant

2025-06-23 14:01:49 -04:00

audit_watch.c

fs: add kern_path_locked_negative()

2025-04-15 11:32:34 +02:00

audit.c

audit: record AUDIT_ANOM_* events regardless of presence of rules

2025-04-11 14:14:41 -04:00

audit.h

audit,module: restore audit logging in load failure case

2025-06-16 17:00:06 -04:00

auditfilter.c

audit: fix suffixed '/' filename matching

2024-12-05 19:22:38 -05:00

auditsc.c

audit,module: restore audit logging in load failure case

2025-06-16 17:00:06 -04:00

backtracetest.c

backtracetest: add MODULE_DESCRIPTION()

2024-06-24 22:24:55 -07:00

bounds.c

bounds: Use the right number of bits for power-of-two CONFIG_NR_CPUS

2024-04-29 08:29:29 -07:00

capability.c

capability: Remove unused has_capability

2025-03-07 22:03:09 -06:00

cfi.c

cfi: Move BPF CFI types and helpers to generic code

2025-07-31 18:23:53 -07:00

compat.c

…

configs.c

…

context_tracking.c

context_tracking: Make RCU watch ct_kernel_exit_state() warning

2025-03-04 18:44:29 -08:00

cpu_pm.c

…

cpu.c

cpu: Remove obsolete comment from takedown_cpu()

2025-08-06 22:48:12 +02:00

crash_core.c

kdump: wait for DMA to finish when using CMA

2025-07-19 19:08:23 -07:00

crash_dump_dm_crypt.c

crash_dump: retrieve dm crypt keys in kdump kernel

2025-05-21 10:48:21 -07:00

crash_reserve.c

kdump: implement reserve_crashkernel_cma

2025-07-19 19:08:23 -07:00

cred.c

cred: remove old {override,revert}_creds() helpers

2024-12-02 11:25:09 +01:00

delayacct.c

delayacct: remove redundant code and adjust indentation

2025-05-27 19:40:33 -07:00

dma.c

…

elfcorehdr.c

…

exec_domain.c

…

exit.c

Merge tag 'mm-nonmm-stable-2025-08-03-12-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2025-08-03 16:23:09 -07:00

exit.h

…

extable.c

…

fail_function.c

…

fork.c

Merge tag 'locking_urgent_for_v6.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2025-08-10 08:11:39 +03:00

freezer.c

sched,freezer: Remove unnecessary warning in __thaw_task

2025-07-17 07:56:50 -10:00

gen_kheaders.sh

kheaders: make it possible to override TAR

2025-08-06 10:23:36 +09:00

groups.c

…

hung_task.c

hung_task: extend hung task blocker tracking to rwsems

2025-07-19 19:08:26 -07:00

iomem.c

mm/memremap: Pass down MEMREMAP_* flags to arch_memremap_wb()

2025-02-21 15:05:38 +01:00

irq_work.c

kasan: make kasan_record_aux_stack_noalloc() the default behaviour

2025-01-13 22:40:36 -08:00

jump_label.c

jump_label: Use RCU in all users of __module_text_address().

2025-03-10 11:54:46 +01:00

kallsyms_internal.h

kallsyms: get rid of code for absolute kallsyms

2024-07-20 16:33:21 +09:00

kallsyms_selftest.c

kallsyms: Use kthread_run_on_cpu()

2025-01-02 22:12:12 +01:00

kallsyms_selftest.h

…

kallsyms.c

bpf: Clean up individual BTF_ID code

2025-07-16 18:34:42 -07:00

kcmp.c

kcmp: improve performance adding an unlikely hint to task comparisons

2025-02-21 10:25:33 +01:00

Kconfig.freezer

…

Kconfig.hz

kernel: Fix "select" wording on HZ_250 description

2025-02-21 09:20:30 +01:00

Kconfig.kexec

crashdump: add CONFIG_KEYS dependency

2025-06-25 15:55:04 -07:00

Kconfig.locks

…

Kconfig.preempt

sched: No PREEMPT_RT=y for all{yes,mod}config

2024-11-07 15:25:05 +01:00

kcov.c

kcov: fix typo in comment of kcov_fault_in_area

2025-07-09 22:57:52 -07:00

kexec_core.c

Merge tag 'mm-nonmm-stable-2025-08-03-12-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2025-08-03 16:23:09 -07:00

kexec_elf.c

kexec: initialize ELF lowest address to ULONG_MAX

2025-03-16 22:30:47 -07:00

kexec_file.c

Merge tag 'mm-nonmm-stable-2025-08-03-12-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2025-08-03 16:23:09 -07:00

kexec_handover.c

Merge tag 'mm-stable-2025-07-30-15-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2025-07-31 14:57:54 -07:00

kexec_internal.h

kexec: enable CMA based contiguous allocation

2025-08-02 12:01:38 -07:00

kexec.c

kexec: enable CMA based contiguous allocation

2025-08-02 12:01:38 -07:00

kheaders.c

kheaders: Simplify attribute through __BIN_ATTR_SIMPLE_RO()

2024-12-24 09:46:49 +01:00

kprobes.c

kprobes: Add missing kerneldoc for __get_insn_slot

2025-07-15 18:45:34 +09:00

kstack_erase.c

stackleak: Rename stackleak_track_stack to __sanitizer_cov_stack_depth

2025-07-21 21:40:39 -07:00

ksyms_common.c

…

ksysfs.c

kernel/ksysfs.c: simplify bin_attribute definition

2025-01-07 16:59:15 +01:00

kthread.c

kthread: update comment for __to_kthread

2025-07-09 22:57:55 -07:00

latencytop.c

treewide: const qualify ctl_tables where applicable

2025-01-28 13:48:37 +01:00

Makefile

Merge tag 'kbuild-v6.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2025-08-06 07:32:52 +03:00

module_signature.c

…

notifier.c

reboot: move reboot_notifier_list to kernel/reboot.c

2024-11-05 17:12:31 -08:00

nsproxy.c

kernel/nsproxy: remove unnecessary guards

2025-05-09 13:13:54 +02:00

padata.c

padata: use cpumask_nth()

2025-06-13 17:26:17 +08:00

panic.c

Merge tag 'mm-nonmm-stable-2025-08-03-12-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2025-08-03 16:23:09 -07:00

params.c

module: ensure that kobject_put() is safe for module type kobjects

2025-05-07 20:24:59 +02:00

pid_namespace.c

pid: Do not set pid_max in new pid namespaces

2025-03-06 10:18:36 +01:00

pid_sysctl.h

treewide: const qualify ctl_tables where applicable

2025-01-28 13:48:37 +01:00

pid.c

Merge tag 'sysctl-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl

2025-07-29 21:43:08 -07:00

profile.c

profiling: remove profile=sleep support

2024-08-04 13:36:28 -07:00

ptrace.c

ptrace: introduce PTRACE_SET_SYSCALL_INFO request

2025-05-11 17:48:15 -07:00

range.c

…

reboot.c

Merge tag 'mm-nonmm-stable-2025-03-30-18-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2025-04-01 10:06:52 -07:00

regset.c

regset: use kvzalloc() for regset_get_alloc()

2024-04-25 21:07:03 -07:00

relay.c

relayfs: support a counter tracking if data is too big to write

2025-07-09 22:57:52 -07:00

resource_kunit.c

resource, kunit: fix user-after-free in resource_test_region_intersects()

2024-10-09 12:47:19 -07:00

resource.c

resource: fix false warning in __request_region()

2025-07-24 17:57:59 -07:00

rseq.c

rseq: Fix segfault on registration when rseq_cs is non-zero

2025-03-06 22:26:49 +01:00

scftorture.c

scftorture: Handle NULL argument passed to scf_add_to_free_list().

2024-11-14 16:09:51 -08:00

scs.c

…

seccomp.c

seccomp: avoid the lock trip seccomp_filter_release in common case

2025-02-24 11:17:10 -08:00

signal.c

coredump: rename do_coredump() to vfs_coredump()

2025-06-16 17:01:22 +02:00

smp.c

smp: Fix spelling in on_each_cpu_cond_mask()'s doc-comment

2025-08-02 14:24:50 +02:00

smpboot.c

sched/smp: Use the SMP version of idle_thread_set_boot_cpu()

2025-06-13 08:47:20 +02:00

smpboot.h

…

softirq.c

lockdep: Fix wait context check on softirq for PREEMPT_RT

2025-03-25 10:46:44 +01:00

stacktrace.c

…

static_call_inline.c

Merge tag 'modules-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux

2025-03-30 15:44:36 -07:00

static_call.c

…

stop_machine.c

sched/core: Fix migrate_swap() vs. hotplug

2025-07-01 15:02:03 +02:00

sys_ni.c

Merge tag 'probes-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2024-07-18 12:19:20 -07:00

sys.c

Merge tag 'mm-stable-2025-07-30-15-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2025-07-31 14:57:54 -07:00

sysctl-test.c

sysctl: move u8 register test to lib/test_sysctl.c

2025-04-14 14:13:41 +02:00

sysctl.c

sysctl: rename kern_table -> sysctl_subsys_table

2025-07-23 11:56:02 +02:00

task_work.c

kasan: make kasan_record_aux_stack_noalloc() the default behaviour

2025-01-13 22:40:36 -08:00

taskstats.c

fdget(), more trivial conversions

2024-11-03 01:28:06 -05:00

torture.c

torture: Add get_torture_init_jiffies() for test-start time

2025-02-05 07:14:24 -08:00

tracepoint.c

tracepoint: Print the function symbol when tracepoint_debug is set

2025-03-21 15:30:10 -04:00

tsacct.c

tsacct: replace strncpy() with strscpy()

2024-07-12 16:39:53 -07:00

ucount.c

ucount: use atomic_long_try_cmpxchg() in atomic_long_inc_below()

2025-08-02 12:01:38 -07:00

uid16.c

…

uid16.h

…

umh.c

treewide: const qualify ctl_tables where applicable

2025-01-28 13:48:37 +01:00

up.c

…

user_namespace.c

uidgid: add map_id_range_up()

2025-02-12 12:12:27 +01:00

user-return-notifier.c

…

user.c

uidgid: make sure we fit into one cacheline

2024-09-12 12:16:09 +02:00

utsname_sysctl.c

treewide: const qualify ctl_tables where applicable

2025-01-28 13:48:37 +01:00

utsname.c

…

vhost_task.c

vhost: Use ERR_CAST inlined function instead of ERR_PTR(PTR_ERR(...))

2025-08-01 09:11:08 -04:00

vmcore_info.c

crash: export PAGE_UNACCEPTED_MAPCOUNT_VALUE to vmcoreinfo

2025-05-11 17:54:04 -07:00

watch_queue.c

Merge tag 'vfs-6.15-rc1.pipe' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2025-03-24 09:52:37 -07:00

watchdog_buddy.c

watchdog: fix opencoded cpumask_next_wrap() in watchdog_next_cpu()

2025-07-31 11:28:03 -04:00

watchdog_perf.c

watchdog/perf: Provide function for adjusting the event period

2025-07-04 13:17:30 +01:00

watchdog.c

kernel/watchdog: add /sys/kernel/{hard,soft}lockup_count

2025-05-21 10:48:22 -07:00

workqueue_internal.h

…

workqueue.c

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

2025-07-31 15:40:22 -07:00