Michal Koutný a0ab145322 cgroup: Print message when /proc/cgroups is read on v2-only system ...

As a followup to commits 6c2920926b ("cgroup: replace
unified-hierarchy.txt with a proper cgroup v2 documentation") and
ab03125268 ("cgroup: Show # of subsystem CSSes in cgroup.stat"),
add a runtime message to users who read status of controllers in
/proc/cgroups on v2-only system. The detection is based on a)
no controllers are attached to v1, b) default hierarchy is mounted (the
latter is for setups that never mount v2 but read /proc/cgroups upon
boot when controllers default to v2, so that this code may be backported
to older kernels).

Signed-off-by: Michal Koutný <mkoutny@suse.com>
Acked-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

2025-03-11 09:22:54 -10:00

..

bpf

bpf: Fix bpf_get_smp_processor_id() on !CONFIG_SMP

2024-12-17 16:09:24 -08:00

cgroup

cgroup: Print message when /proc/cgroups is read on v2-only system

2025-03-11 09:22:54 -10:00

configs

configs/debug: make sure PROVE_RCU_LIST=y takes effect

2024-10-28 10:21:09 -07:00

debug

kdb: fix ctrl+e/a/f/b/d/p/n broken in keyboard mode

2024-11-18 15:20:22 +00:00

dma

dma-debug: fix physical address calculation for struct dma_debug_entry

2024-11-28 10:19:16 +01:00

entry

sched: Add TIF_NEED_RESCHED_LAZY infrastructure

2024-11-05 12:55:37 +01:00

events

uprobes: Fix race in uprobe_free_utask

2025-01-10 09:28:01 +01:00

futex

futex: fix user access on powerpc

2024-12-09 10:00:25 -08:00

gcov

gcov: add support for GCC 14

2024-06-15 10:43:06 -07:00

irq

genirq/proc: Add missing space separator back

2024-12-03 14:59:34 +01:00

kcsan

kcsan: Remove redundant call of kallsyms_lookup_name()

2024-10-14 16:44:56 +02:00

livepatch

livepatch: Replace snprintf() with sysfs_emit()

2024-07-02 16:56:18 +02:00

locking

locking/rtmutex: Make sure we wake anything on the wake_q when we release the lock->wait_lock

2024-12-17 17:47:24 +01:00

module

module: Convert symbol namespace to string literal

2024-12-02 11:34:44 -08:00

power

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

2024-11-23 16:00:50 -08:00

printk

Merge tag 'printk-for-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux

2024-11-20 09:21:11 -08:00

rcu

Merge tag 'irq-core-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2024-11-19 15:54:19 -08:00

sched

Merge tag 'sched_urgent_for_v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2025-01-19 09:01:17 -08:00

time

hrtimers: Handle CPU state correctly on hotplug

2025-01-16 13:06:14 +01:00

trace

Merge tag 'for-6.14/block-20250118' of git://git.kernel.dk/linux

2025-01-20 19:38:46 -08:00

.gitignore

…

acct.c

acct: avoid pointless reference count bump

2024-12-02 11:25:13 +01:00

async.c

async: Use a dedicated unbound workqueue with raised min_active

2024-02-09 11:13:59 -10:00

audit_fsnotify.c

…

audit_tree.c

fsnotify: create a wrapper fsnotify_find_inode_mark()

2024-04-04 16:24:16 +02:00

audit_watch.c

fsnotify: create a wrapper fsnotify_find_inode_mark()

2024-04-04 16:24:16 +02:00

audit.c

Merge tag 'lsm-pr-20241112' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm

2024-11-18 17:34:05 -08:00

audit.h

audit: change context data from secid to lsm_prop

2024-10-11 14:34:16 -04:00

auditfilter.c

audit: change context data from secid to lsm_prop

2024-10-11 14:34:16 -04:00

auditsc.c

audit: workaround a GCC bug triggered by task comm changes

2024-12-04 22:57:46 -05:00

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

…

cfi.c

…

compat.c

…

configs.c

…

context_tracking.c

context_tracking, rcu: Rename rcu_dyntick trace event into rcu_watching

2024-08-15 21:30:43 +05:30

cpu_pm.c

…

cpu.c

hrtimers: Handle CPU state correctly on hotplug

2025-01-16 13:06:14 +01:00

crash_core.c

kexec/crash: no crash update when kexec in progress

2024-11-05 17:12:27 -08:00

crash_reserve.c

crash: fix crash memory reserve exceed system memory bug

2024-09-01 20:43:30 -07:00

cred.c

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

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

delayacct.c

sysctl: treewide: constify the ctl_table argument of proc_handlers

2024-07-24 20:59:29 +02:00

dma.c

…

elfcorehdr.c

crash: remove dependency of FA_DUMP on CRASH_DUMP

2024-02-23 17:48:22 -08:00

exec_domain.c

…

exit.c

remove pointless includes of <linux/fdtable.h>

2024-10-07 13:34:41 -04:00

exit.h

exit: add internal include file with helpers

2023-09-21 12:03:50 -06:00

extable.c

…

fail_function.c

…

fork.c

fork: avoid inappropriate uprobe access to invalid mm

2024-12-18 19:04:44 -08:00

freezer.c

sched/fair: Fix external p->on_rq users

2024-10-14 09:14:35 +02:00

gen_kheaders.sh

kheaders: Ignore silly-rename files

2024-12-20 22:07:55 +01:00

groups.c

groups: Convert group_info.usage to refcount_t

2023-09-29 11:28:39 -07:00

hung_task.c

hung_task: add detect count for hung tasks

2024-11-11 17:17:03 -08:00

iomem.c

…

irq_work.c

…

jump_label.c

jump_label: Fix static_key_slow_dec() yet again

2024-09-10 11:57:27 +02:00

kallsyms_internal.h

kallsyms: get rid of code for absolute kallsyms

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

kallsyms_selftest.c

kallsyms: Match symbols exactly with CONFIG_LTO_CLANG

2024-08-15 09:33:35 -07:00

kallsyms_selftest.h

…

kallsyms.c

kallsyms: Match symbols exactly with CONFIG_LTO_CLANG

2024-08-15 09:33:35 -07:00

kcmp.c

get rid of ...lookup...fdget_rcu() family

2024-10-07 13:34:41 -04:00

Kconfig.freezer

…

Kconfig.hz

…

Kconfig.kexec

crash, powerpc: default to CRASH_DUMP=n on PPC_BOOK3S_32

2024-11-14 22:43:48 -08:00

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: mark in_softirq_really() as __always_inline

2024-12-30 17:59:08 -08:00

kexec_core.c

sysctl: treewide: constify the ctl_table argument of proc_handlers

2024-07-24 20:59:29 +02:00

kexec_elf.c

…

kexec_file.c

kexec_file: fix elfcorehdr digest exclusion when CONFIG_CRASH_HOTPLUG=y

2024-09-01 17:59:01 -07:00

kexec_internal.h

kexec: use atomic_try_cmpxchg_acquire() in kexec_trylock()

2024-09-01 20:43:23 -07:00

kexec.c

crash: add a new kexec flag for hotplug support

2024-04-23 14:59:01 +10:00

kheaders.c

…

kprobes.c

kprobes: Use struct_size() in __get_insn_slot()

2024-10-31 11:00:58 +09:00

ksyms_common.c

…

ksysfs.c

profiling: remove prof_cpu_mask

2024-07-29 10:45:54 -07:00

kthread.c

Merge tag 'execve-v6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

2025-01-20 13:27:58 -08:00

latencytop.c

sysctl: treewide: constify the ctl_table argument of proc_handlers

2024-07-24 20:59:29 +02:00

Makefile

mm: move kernel/numa.c to mm/

2024-09-03 21:15:26 -07:00

module_signature.c

…

notifier.c

reboot: move reboot_notifier_list to kernel/reboot.c

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

nsproxy.c

fdget(), trivial conversions

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

padata.c

padata: Clean up in padata_do_multithreaded()

2024-11-10 11:50:54 +08:00

panic.c

Merge tag 'drm-next-2024-09-19' of https://gitlab.freedesktop.org/drm/kernel

2024-09-19 10:18:15 +02:00

params.c

params: Fix multi-line comment style

2023-12-01 09:51:44 -08:00

pid_namespace.c

pid: allow pid_max to be set per pid namespace

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

pid_sysctl.h

sysctl: treewide: constify the ctl_table argument of proc_handlers

2024-07-24 20:59:29 +02:00

pid.c

Merge tag 'kernel-6.14-rc1.pid' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2025-01-20 10:29:11 -08:00

profile.c

profiling: remove profile=sleep support

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

ptrace.c

ptrace_attach: shift send(SIGSTOP) into ptrace_set_stopped()

2024-02-22 15:38:52 -08:00

range.c

…

reboot.c

kernel/reboot: replace sprintf() with sysfs_emit()

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

regset.c

regset: use kvzalloc() for regset_get_alloc()

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

relay.c

[tree-wide] finally take no_llseek out

2024-09-27 08:18:43 -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

module: Convert symbol namespace to string literal

2024-12-02 11:34:44 -08:00

rseq.c

…

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

sysctl: treewide: constify the ctl_table argument of proc_handlers

2024-07-24 20:59:29 +02:00

signal.c

signal/posixtimers: Handle ignore/blocked sequences correctly

2025-01-15 18:08:01 +01:00

smp.c

locking/csd-lock: Switch from sched_clock() to ktime_get_mono_fast_ns()

2024-10-11 09:31:21 -07:00

smpboot.c

kthread: add kthread_stop_put

2023-10-04 10:41:57 -07:00

smpboot.h

…

softirq.c

softirq: Allow raising SCHED_SOFTIRQ from SMP-call-function on RT kernel

2024-12-02 12:01:27 +01:00

stackleak.c

sysctl: treewide: constify the ctl_table argument of proc_handlers

2024-07-24 20:59:29 +02:00

stacktrace.c

stacktrace: fix kernel-doc typo

2023-12-29 12:22:29 -08:00

static_call_inline.c

x86/static-call: provide a way to do very early static-call updates

2024-12-13 09:28:32 +01:00

static_call.c

…

stop_machine.c

rcu: Rename rcu_momentary_dyntick_idle() into rcu_momentary_eqs()

2024-08-15 21:30:42 +05:30

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 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

2024-11-18 18:10:37 -08:00

sysctl-test.c

sysctl: Add module description to sysctl-testing

2024-06-03 15:20:37 +02:00

sysctl.c

pid: allow pid_max to be set per pid namespace

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

task_work.c

sched/core: Disable page allocation in task_tick_mm_cid()

2024-10-11 10:49:32 +02:00

taskstats.c

fdget(), more trivial conversions

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

torture.c

torture: Add MODULE_DESCRIPTION()

2024-05-30 15:31:38 -07:00

tracepoint.c

tracing: Fix syscall tracepoint use-after-free

2024-11-01 14:37:31 -04:00

tsacct.c

tsacct: replace strncpy() with strscpy()

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

ucount.c

Merge tag 'sysctl-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl

2024-11-22 20:36:11 -08:00

uid16.c

…

uid16.h

…

umh.c

remove pointless includes of <linux/fdtable.h>

2024-10-07 13:34:41 -04:00

up.c

smp: Change function signatures to use call_single_data_t

2023-09-13 14:59:24 +02:00

user_namespace.c

user_namespace: use kmemdup_array() instead of kmemdup() for multiple allocation

2024-09-09 16:47:42 -07:00

user-return-notifier.c

…

user.c

uidgid: make sure we fit into one cacheline

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

usermode_driver.c

…

utsname_sysctl.c

sysctl: treewide: constify the ctl_table argument of proc_handlers

2024-07-24 20:59:29 +02:00

utsname.c

…

vhost_task.c

vhost_task: Handle SIGKILL by flushing work and exiting

2024-05-22 08:31:15 -04:00

vmcore_info.c

mm: support only one page_type per page

2024-09-03 21:15:43 -07:00

watch_queue.c

watch_queue: Use page->private instead of page->index

2024-12-22 11:29:51 +01:00

watchdog_buddy.c

…

watchdog_perf.c

watchdog/perf: properly initialize the turbo mode timestamp and rearm counter

2024-07-17 21:11:34 -07:00

watchdog.c

Merge tag 'mm-nonmm-stable-2024-11-24-02-05' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2024-11-25 16:09:48 -08:00

workqueue_internal.h

…

workqueue.c

workqueue: warn if delayed_work is queued to an offlined cpu.

2025-01-10 08:33:39 -10:00