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Huang Ying 5c7b1aaf13 sched/numa: Avoid migrating task to CPU-less node 
In a typical memory tiering system, there's no CPU in slow (PMEM) NUMA
nodes.  But if the number of the hint page faults on a PMEM node is
the max for a task, The current NUMA balancing policy may try to place
the task on the PMEM node instead of DRAM node.  This is unreasonable,
because there's no CPU in PMEM NUMA nodes.  To fix this, CPU-less
nodes are ignored when searching the migration target node for a task
in this patch.

To test the patch, we run a workload that accesses more memory in PMEM
node than memory in DRAM node.  Without the patch, the PMEM node will
be chosen as preferred node in task_numa_placement().  While the DRAM
node will be chosen instead with the patch.

Signed-off-by: "Huang, Ying" <ying.huang@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220214121553.582248-2-ying.huang@intel.com
2022-02-16 15:57:53 +01:00
..
bpf
bpf: Fix ringbuf memory type confusion when passing to helpers
2022-01-19 01:21:46 +01:00
cgroup
Merge branch 'for-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2022-01-11 09:14:37 -08:00
configs
configs: introduce debug.config for CI-like setup
2022-01-20 08:52:55 +02:00
debug
kdb: Adopt scheduler's task classification
2021-11-03 17:21:37 +00:00
dma
hyperv-next for 5.17
2022-01-16 15:53:00 +02:00
entry
entry: Snapshot thread flags
2021-12-01 00:06:43 +01:00
events
Peter Zijlstra says:
2022-01-12 16:26:58 -08:00
futex
Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2022-01-17 05:49:30 +02:00
gcov
gcov: Remove compiler version check
2021-12-02 17:25:21 +09:00
irq
proc: remove PDE_DATA() completely
2022-01-22 08:33:37 +02:00
kcsan
KCSAN updates for v5.17
2022-01-11 09:51:26 -08:00
livepatch
Livepatching changes for 5.17
2022-01-16 10:08:13 +02:00
locking
locking/rwlocks: introduce write_lock_nested
2022-01-22 08:33:37 +02:00
power
PM: hibernate: Allow ACPI hardware signature to be honoured
2021-12-08 16:06:10 +01:00
printk
printk: fix build warning when CONFIG_PRINTK=n
2022-01-22 08:33:36 +02:00
rcu
Merge branch 'akpm' (patches from Andrew)
2022-01-15 20:37:06 +02:00
sched
sched/numa: Avoid migrating task to CPU-less node
2022-02-16 15:57:53 +01:00
time
bitmap patches for 5.17-rc1
2022-01-23 06:20:44 +02:00
trace
ftrace: Fix s390 breakage from sorting mcount tables
2022-01-23 08:07:02 +02:00
.gitignore
.gitignore: prefix local generated files with a slash
2021-05-02 00:43:35 +09:00
acct.c
kernel: remove spurious blkdev.h includes
2021-10-18 06:17:01 -06:00
async.c
kernel/async.c: remove async_unregister_domain()
2021-05-07 00:26:33 -07:00
audit_fsnotify.c
fsnotify: clarify contract for create event hooks
2021-10-27 12:32:34 +02:00
audit_tree.c
audit: use struct_size() helper in kmalloc()
2021-12-14 17:39:42 -05:00
audit_watch.c
\n
2021-11-06 16:43:20 -07:00
audit.c
audit/stable-5.17 PR 20220110
2022-01-11 13:08:21 -08:00
audit.h
audit/stable-5.16 PR 20211101
2021-11-01 21:17:39 -07:00
auditfilter.c
audit/stable-5.17 PR 20220110
2022-01-11 13:08:21 -08:00
auditsc.c
lsm: security_task_getsecid_subj() -> security_current_getsecid_subj()
2021-11-22 17:52:47 -05:00
backtracetest.c
…
bounds.c
…
capability.c
…
cfi.c
cfi: Use rcu_read_{un}lock_sched_notrace
2021-08-11 13:11:12 -07:00
compat.c
arch: remove compat_alloc_user_space
2021-09-08 15:32:35 -07:00
configs.c
…
context_tracking.c
…
cpu_pm.c
PM: cpu: Make notifier chain use a raw_spinlock_t
2021-08-16 18:55:32 +02:00
cpu.c
sched/scs: Reset task stack state in bringup_cpu()
2021-11-24 12:20:27 +01:00
crash_core.c
kernel/crash_core: suppress unknown crashkernel parameter warning
2021-12-25 12:20:55 -08:00
crash_dump.c
…
cred.c
ucounts: In set_cred_ucounts assume new->ucounts is non-NULL
2021-10-20 10:45:34 -05:00
delayacct.c
delayacct: track delays from memory compact
2022-01-20 08:52:55 +02:00
dma.c
…
exec_domain.c
…
exit.c
exit: Fix the exit_code for wait_task_zombie
2022-01-08 12:43:57 -06:00
extable.c
extable: use is_kernel_text() helper
2021-11-09 10:02:51 -08:00
fail_function.c
…
fork.c
Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2022-01-17 05:49:30 +02:00
freezer.c
sched: Add get_current_state()
2021-06-18 11:43:08 +02:00
gen_kheaders.sh
kbuild: clean up ${quiet} checks in shell scripts
2021-05-27 04:01:50 +09:00
groups.c
…
hung_task.c
hung_task: move hung_task sysctl interface to hung_task.c
2022-01-22 08:33:34 +02:00
iomem.c
…
irq_work.c
irq_work: Also rcuwait for !IRQ_WORK_HARD_IRQ on PREEMPT_RT
2021-10-15 11:25:18 +02:00
jump_label.c
jump_label: Fix jump_label_text_reserved() vs __init
2021-07-05 10:46:20 +02:00
kallsyms.c
Livepatching changes for 5.17
2022-01-16 10:08:13 +02:00
kcmp.c
…
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
locking/rwlock: Provide RT variant
2021-08-17 17:50:51 +02:00
Kconfig.preempt
preempt: Restore preemption model selection configs
2021-11-11 13:09:33 +01:00
kcov.c
kcov: replace local_irq_save() with a local_lock_t
2021-11-09 10:02:52 -08:00
kexec_core.c
exit: Move oops specific logic from do_exit into make_task_dead
2021-12-13 12:04:45 -06:00
kexec_elf.c
…
kexec_file.c
memblock: add MEMBLOCK_DRIVER_MANAGED to mimic IORESOURCE_SYSRAM_DRIVER_MANAGED
2021-11-06 13:30:42 -07:00
kexec_internal.h
…
kexec.c
kexec: avoid compat_alloc_user_space
2021-09-08 15:32:34 -07:00
kheaders.c
…
kmod.c
modules: add CONFIG_MODPROBE_PATH
2021-05-07 00:26:33 -07:00
kprobes.c
kprobe: move sysctl_kprobes_optimization to kprobes.c
2022-01-22 08:33:36 +02:00
ksysfs.c
…
kthread.c
Merge branch 'akpm' (patches from Andrew)
2022-01-20 10:41:01 +02:00
latencytop.c
…
Makefile
module: add in-kernel support for decompressing
2022-01-11 18:45:02 -08:00
module_decompress.c
kernel: Fix spelling mistake "compresser" -> "compressor"
2022-01-13 07:17:47 -08:00
module_signature.c
…
module_signing.c
…
module-internal.h
module: add in-kernel support for decompressing
2022-01-11 18:45:02 -08:00
module.c
Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux
2022-01-17 07:32:51 +02:00
notifier.c
notifier: Return an error when a callback has already been registered
2021-12-29 10:37:33 +01:00
nsproxy.c
memcg: enable accounting for new namesapces and struct nsproxy
2021-09-03 09:58:12 -07:00
padata.c
padata: Remove repeated verbose license text
2021-08-27 16:30:18 +08:00
panic.c
panic: remove oops_id
2022-01-20 08:52:55 +02:00
params.c
kobject: remove kset from struct kset_uevent_ops callbacks
2021-12-28 11:26:18 +01:00
pid_namespace.c
memcg: enable accounting for new namesapces and struct nsproxy
2021-09-03 09:58:12 -07:00
pid.c
pid: add pidfd_get_task() helper
2021-10-14 13:29:18 +02:00
profile.c
exit: Remove profile_handoff_task
2022-01-08 12:43:57 -06:00
ptrace.c
ptrace: Remove second setting of PT_SEIZED in ptrace_attach
2022-01-08 12:43:57 -06:00
range.c
…
reboot.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2021-11-12 11:53:16 -08:00
regset.c
…
relay.c
…
resource_kunit.c
…
resource.c
proc: remove PDE_DATA() completely
2022-01-22 08:33:37 +02:00
rseq.c
rseq: Remove broken uapi field layout on 32-bit little endian
2022-02-02 13:11:34 +01:00
scftorture.c
scftorture: Always log error message
2021-12-07 16:36:17 -08:00
scs.c
scs: Release kasan vmalloc poison in scs_free process
2021-09-30 09:37:27 +01:00
seccomp.c
Merge branch 'exit-cleanups-for-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2021-09-01 14:52:05 -07:00
signal.c
Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2022-01-17 05:49:30 +02:00
smp.c
sched: Improve wake_up_all_idle_cpus() take #2
2021-10-22 15:32:46 +02:00
smpboot.c
smpboot: Replace deprecated CPU-hotplug functions.
2021-08-10 14:57:42 +02:00
smpboot.h
…
softirq.c
timers/nohz: Last resort update jiffies on nohz_full IRQ entry
2021-12-02 15:07:22 +01:00
stackleak.c
stackleak: move stack_erasing sysctl to stackleak.c
2022-01-22 08:33:35 +02:00
stacktrace.c
stacktrace: move filter_irq_stacks() to kernel/stacktrace.c
2021-11-06 13:30:43 -07:00
static_call.c
static_call: Fix static_call_text_reserved() vs __init
2021-07-05 10:46:33 +02:00
stop_machine.c
…
sys_ni.c
mm/mempolicy: wire up syscall set_mempolicy_home_node
2022-01-15 16:30:30 +02:00
sys.c
Merge branch 'akpm' (patches from Andrew)
2022-01-20 10:41:01 +02:00
sysctl-test.c
kernel/sysctl-test: Remove some casts which are no-longer required
2021-06-23 16:41:24 -06:00
sysctl.c
sched: move autogroup sysctls into its own file
2022-02-02 13:11:37 +01:00
task_work.c
kasan: record task_work_add() call stack
2021-04-30 11:20:42 -07:00
taskstats.c
…
torture.c
locktorture,rcutorture,torture: Always log error message
2021-12-07 16:36:17 -08:00
tracepoint.c
tracepoint: Fix kerneldoc comments
2021-08-16 11:39:51 -04:00
tsacct.c
taskstats: Cleanup the use of task->exit_code
2022-01-08 12:43:57 -06:00
ucount.c
ucounts: Fix rlimit max values check
2021-12-09 15:37:18 -06:00
uid16.c
…
uid16.h
…
umh.c
kernel/umh.c: fix some spelling mistakes
2021-05-07 00:26:34 -07:00
up.c
A set of locking related fixes and updates:
2021-05-09 13:07:03 -07:00
user_namespace.c
memcg: enable accounting for new namesapces and struct nsproxy
2021-09-03 09:58:12 -07:00
user-return-notifier.c
…
user.c
fs/epoll: use a per-cpu counter for user's watches count
2021-09-08 11:50:27 -07:00
usermode_driver.c
Merge branch 'work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2021-07-03 11:41:14 -07:00
utsname_sysctl.c
…
utsname.c
…
watch_queue.c
…
watchdog_hld.c
…
watchdog.c
watchdog: move watchdog sysctl interface to watchdog.c
2022-01-22 08:33:34 +02:00
workqueue_internal.h
workqueue: Assign a color to barrier work items
2021-08-17 07:49:10 -10:00
workqueue.c
Merge branch 'workqueue/for-5.16-fixes' into workqueue/for-5.17
2022-01-10 07:54:04 -10:00