Juri Lelli
a07db5c086
sched/core: Fix CPU controller for !RT_GROUP_SCHED ...
On !CONFIG_RT_GROUP_SCHED configurations it is currently not possible to
move RT tasks between cgroups to which CPU controller has been attached;
but it is oddly possible to first move tasks around and then make them
RT (setschedule to FIFO/RR).
E.g.:
# mkdir /sys/fs/cgroup/cpu,cpuacct/group1
# chrt -fp 10 $$
# echo $$ > /sys/fs/cgroup/cpu,cpuacct/group1/tasks
bash: echo: write error: Invalid argument
# chrt -op 0 $$
# echo $$ > /sys/fs/cgroup/cpu,cpuacct/group1/tasks
# chrt -fp 10 $$
# cat /sys/fs/cgroup/cpu,cpuacct/group1/tasks
2345
2598
# chrt -p 2345
pid 2345's current scheduling policy: SCHED_FIFO
pid 2345's current scheduling priority: 10
Also, as Michal noted, it is currently not possible to enable CPU
controller on unified hierarchy with !CONFIG_RT_GROUP_SCHED (if there
are any kernel RT threads in root cgroup, they can't be migrated to the
newly created CPU controller's root in cgroup_update_dfl_csses()).
Existing code comes with a comment saying the "we don't support RT-tasks
being in separate groups". Such comment is however stale and belongs to
pre-RT_GROUP_SCHED times. Also, it doesn't make much sense for
!RT_GROUP_ SCHED configurations, since checks related to RT bandwidth
are not performed at all in these cases.
Make moving RT tasks between CPU controller groups viable by removing
special case check for RT (and DEADLINE) tasks.
Signed-off-by: Juri Lelli <juri.lelli@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Michal Koutný <mkoutny@suse.com>
Reviewed-by: Daniel Bristot de Oliveira <bristot@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: lizefan@huawei.com
Cc: longman@redhat.com
Cc: luca.abeni@santannapisa.it
Cc: rostedt@goodmis.org
Link: https://lkml.kernel.org/r/20190719063455.27328-1-juri.lelli@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-07-25 15:55:05 +02:00
Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-07-20 10:45:15 -07:00
sched/core: Prevent race condition between cpuset and __sched_setscheduler()
2019-07-25 15:55:04 +02:00
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
dma-mapping fixes for 5.3-rc1
2019-07-20 12:09:52 -07:00
sched/core: Convert get_task_struct() to return the task
2019-07-25 15:51:54 +02:00
gcov: no need to check return value of debugfs_create functions
2019-06-03 16:18:12 +02:00
sched/core: Convert get_task_struct() to return the task
2019-07-25 15:51:54 +02:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching
2019-07-11 15:30:05 -07:00
sched/core: Convert get_task_struct() to return the task
2019-07-25 15:51:54 +02:00
pci-v5.3-changes
2019-07-15 20:44:49 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13
2019-05-21 11:28:45 +02:00
rcu/tree: Call setschedule() gp ktread to SCHED_FIFO outside of atomic region
2019-07-25 15:55:03 +02:00
sched/core: Fix CPU controller for !RT_GROUP_SCHED
2019-07-25 15:55:05 +02:00
timekeeping/vsyscall: Use __iter_div_u64_rem()
2019-07-10 20:37:49 +02:00
sched/core: Convert get_task_struct() to return the task
2019-07-25 15:51:54 +02:00
Provide in-kernel headers to make extending kernel easier
2019-04-29 16:48:03 +02:00
acct_on(): don't mess with freeze protection
2019-04-04 21:04:13 -04:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
2019-06-05 17:37:17 +02:00
audit/stable-5.3 PR 20190702
2019-07-08 18:55:42 -07:00
audit/stable-5.3 PR 20190702
2019-07-08 18:55:42 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
fsnotify: switch send_to_group() and ->handle_event to const struct qstr *
2019-04-26 13:51:03 -04:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
audit/stable-5.3 PR 20190702
2019-07-08 18:55:42 -07:00
audit: enforce op for string fields
2019-05-28 17:46:43 -04:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
2019-06-05 17:37:17 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
kernel/configs: use .incbin directive to embed config_data.gz
2019-03-07 18:32:02 -08:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-07-08 10:39:56 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282
2019-06-05 17:36:37 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230
2019-06-19 17:09:06 +02:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
request_key improvements
2019-07-08 19:19:37 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 25
2019-05-21 11:52:39 +02:00
pidfd: fix a poll race when setting exit_state
2019-07-22 16:02:03 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
fail_function: no need to check return value of debugfs_create functions
2019-06-03 15:49:06 +02:00
sched/fair: Don't free p->numa_faults with concurrent readers
2019-07-25 15:37:04 +02:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
Linux 5.2-rc3
2019-06-03 11:50:18 +02:00
kheaders: include only headers into kheaders_data.tar.xz
2019-07-09 10:10:52 +09:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
mm/nvdimm: add is_ioremap_addr and use that to check ioremap address
2019-07-12 11:05:40 -07:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
jump_label: Batch updates if arch supports it
2019-06-17 12:09:22 +02:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
sched/rt, Kconfig: Unbreak def/oldconfig with CONFIG_PREEMPT=y
2019-07-22 18:05:11 +02:00
kcov: convert kcov.refcount to refcount_t
2019-03-07 18:32:02 -08:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230
2019-06-19 17:09:06 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230
2019-06-19 17:09:06 +02:00
Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity
2019-07-08 20:28:59 -07:00
kheaders: Move from proc to sysfs
2019-05-24 20:16:01 +02:00
The main changes in this release include:
2019-07-18 11:51:00 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 170
2019-05-30 11:26:39 -07:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
2019-06-05 17:37:17 +02:00
kheaders: Move from proc to sysfs
2019-05-24 20:16:01 +02:00
mm/devm_memremap_pages: enable sub-section remap
2019-07-18 17:08:07 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36
2019-05-24 17:27:11 +02:00
Modules updates for v5.3
2019-07-18 12:06:57 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36
2019-05-24 17:27:11 +02:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
2019-06-05 17:37:17 +02:00
padata: use smp_mb in padata_reorder to avoid orphaned padata jobs
2019-07-18 13:39:54 +08:00
docs: admin-guide: move sysctl directory to it
2019-07-15 11:03:01 -03:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
kernel/pid.c: convert struct pid count to refcount_t
2019-07-16 19:23:24 -07:00
proc/sysctl: add shared variables for range check
2019-07-18 17:08:07 -07:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
ptrace: add PTRACE_GET_SYSCALL_INFO request
2019-07-16 19:23:24 -07:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-03-12 13:27:20 -07:00
resource: avoid unnecessary lookups in find_next_iomem_res()
2019-07-18 17:08:06 -07:00
signal: Remove task parameter from force_sig
2019-05-27 09:36:28 -05:00
signal: Remove the signal number and task parameters from force_sig_info
2019-05-29 09:31:44 -05:00
signal: simplify set_user_sigmask/restore_user_sigmask
2019-07-16 19:23:24 -07:00
smp: Warn on function calls from softirq context
2019-07-20 11:27:16 +02:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-07-08 11:01:13 -07:00
stacktrace: Force USER_DS for stack_trace_save_user()
2019-07-18 16:47:24 +02:00
processor: get rid of cpu_relax_yield
2019-06-15 12:25:55 +02:00
prctl_set_mm: downgrade mmap_sem to read lock
2019-06-01 15:51:31 -07:00
arch: handle arches who do not yet define clone3
2019-06-21 01:54:53 +02:00
proc/sysctl: add shared variables for range check
2019-07-18 17:08:07 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 25
2019-05-21 11:52:39 +02:00
torture: Allow inter-stutter interval to be specified
2019-05-28 09:06:09 -07:00
The main changes in this release include:
2019-07-18 11:51:00 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
proc/sysctl: add shared variables for range check
2019-07-18 17:08:07 -07:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
smp: Remove smp_call_function() and on_each_cpu() return values
2019-06-23 14:26:26 +02:00
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
Keyrings namespacing
2019-07-08 19:36:47 -07:00
Keyrings namespacing
2019-07-08 19:36:47 -07:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
2019-06-05 17:37:17 +02:00
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
2019-06-05 17:37:17 +02:00
watchdog: Fix typo in comment
2019-04-18 14:05:51 +02:00
kernel/watchdog_hld.c: hard lockup message should end with a newline
2019-04-19 09:46:05 -07:00
workqueue: Remove GPF argument from alloc_workqueue_attrs()
2019-06-27 14:12:19 -07:00
sched/core, workqueues: Distangle worker accounting from rq lock
2019-04-16 16:55:15 +02:00
a07db5c086