Huang Ying c959924b0d memory tiering: adjust hot threshold automatically ... The promotion hot threshold is workload and system configuration dependent. So in this patch, a method to adjust the hot threshold automatically is implemented. The basic idea is to control the number of the candidate promotion pages to match the promotion rate limit. If the hint page fault latency of a page is less than the hot threshold, we will try to promote the page, and the page is called the candidate promotion page. If the number of the candidate promotion pages in the statistics interval is much more than the promotion rate limit, the hot threshold will be decreased to reduce the number of the candidate promotion pages. Otherwise, the hot threshold will be increased to increase the number of the candidate promotion pages. To make the above method works, in each statistics interval, the total number of the pages to check (on which the hint page faults occur) and the hot/cold distribution need to be stable. Because the page tables are scanned linearly in NUMA balancing, but the hot/cold distribution isn't uniform along the address usually, the statistics interval should be larger than the NUMA balancing scan period. So in the patch, the max scan period is used as statistics interval and it works well in our tests. Link: https://lkml.kernel.org/r/20220713083954.34196-4-ying.huang@intel.com Signed-off-by: "Huang, Ying" <ying.huang@intel.com> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> Tested-by: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Michal Hocko <mhocko@suse.com> Cc: osalvador <osalvador@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@surriel.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Wei Xu <weixugc@google.com> Cc: Yang Shi <shy828301@gmail.com> Cc: Zhong Jiang <zhongjiang-ali@linux.alibaba.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2022-09-11 20:25:54 -07:00
..
bpf	net: Fix suspicious RCU usage in bpf_sk_reuseport_detach()	2022-08-17 16:42:59 -07:00
cgroup	cgroup: Add missing cpus_read_lock() to cgroup_attach_task_all()	2022-08-25 07:36:30 -10:00
configs	xen: branch for v6.0-rc1b	2022-08-14 09:28:54 -07:00
debug	Modules updates for v5.19-rc1	2022-05-26 17:13:43 -07:00
dma	remoteproc updates for v5.20	2022-08-08 15:16:29 -07:00
entry	context_tracking: Take NMI eqs entrypoints over RCU	2022-07-05 13:32:59 -07:00
events	Misc fixes to kprobes and the faddr2line script, plus a cleanup.	2022-08-06 17:28:12 -07:00
futex	drm for 5.19-rc1	2022-05-25 16:18:27 -07:00
gcov	gcov: Remove compiler version check	2021-12-02 17:25:21 +09:00
irq	irqchip/genirq updates for 5.20:	2022-07-28 12:36:35 +02:00
kcsan	kcsan: test: Add a .kunitconfig to run KCSAN tests	2022-07-22 09:22:59 -06:00
livepatch	Livepatching changes for 5.19	2022-06-02 08:55:01 -07:00
locking	RCU pull request for v5.20 (or whatever)	2022-08-02 19:12:45 -07:00
module	module: kunit: Load .kunit_test_suites section when CONFIG_KUNIT=m	2022-08-15 13:51:07 -06:00
power	Char / Misc driver changes for 6.0-rc1	2022-08-04 11:05:48 -07:00
printk	printk: do not wait for consoles when suspended	2022-07-15 10:52:11 +02:00
rcu	- The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe	2022-08-05 16:32:45 -07:00
sched	memory tiering: adjust hot threshold automatically	2022-09-11 20:25:54 -07:00
time	time: Correct the prototype of ns_to_kernel_old_timeval and ns_to_timespec64	2022-08-09 20:02:13 +02:00
trace	ftrace: Fix build warning for ops_references_rec() not used	2022-08-22 09:41:12 -04:00
.gitignore	…
Kconfig.freezer	…
Kconfig.hz	…
Kconfig.locks	…
Kconfig.preempt	Revert "signal, x86: Delay calling signals in atomic on RT enabled kernels"	2022-03-31 10:36:55 +02:00
Makefile	kernel: remove platform_has() infrastructure	2022-08-01 07:42:56 +02:00
acct.c	kernel/acct: move acct sysctls to its own file	2022-04-06 13:43:44 -07:00
async.c	Revert "module, async: async_synchronize_full() on module init iff async is used"	2022-02-03 11:20:34 -08:00
audit.c	audit: make is_audit_feature_set() static	2022-06-13 14:08:57 -04:00
audit.h	audit: log AUDIT_TIME_* records only from rules	2022-02-22 13:51:40 -05:00
audit_fsnotify.c	audit: fix potential double free on error path from fsnotify_add_inode_mark	2022-08-22 18:50:06 -04:00
audit_tree.c	audit: use fsnotify group lock helpers	2022-04-25 14:37:28 +02:00
audit_watch.c	fsnotify: pass flags argument to fsnotify_alloc_group()	2022-04-25 14:37:12 +02:00
auditfilter.c	audit/stable-5.17 PR 20220110	2022-01-11 13:08:21 -08:00
auditsc.c	audit: move audit_return_fixup before the filters	2022-08-25 17:25:08 -04:00
backtracetest.c	…
bounds.c	…
capability.c	xfs: don't generate selinux audit messages for capability testing	2022-03-09 10:32:06 -08:00
cfi.c	context_tracking: Take IRQ eqs entrypoints over RCU	2022-07-05 13:32:59 -07:00
compat.c	…
configs.c	…
context_tracking.c	MAINTAINERS: Add Paul as context tracking maintainer	2022-07-05 13:33:00 -07:00
cpu.c	Intel Trust Domain Extensions	2022-05-23 17:51:12 -07:00
cpu_pm.c	context_tracking: Take IRQ eqs entrypoints over RCU	2022-07-05 13:32:59 -07:00
crash_core.c	vmcoreinfo: add kallsyms_num_syms symbol	2022-08-28 14:02:44 -07:00
crash_dump.c	…
cred.c	x86: Mark __invalid_creds() __noreturn	2022-03-15 10:32:44 +01:00
delayacct.c	delayacct: track delays from write-protect copy	2022-06-01 15:55:25 -07:00
dma.c	…
exec_domain.c	…
exit.c	exit: Fix typo in comment: s/sub-theads/sub-threads	2022-08-03 10:44:54 +02:00
extable.c	context_tracking: Take NMI eqs entrypoints over RCU	2022-07-05 13:32:59 -07:00
fail_function.c	…
fork.c	Tracing updates for 5.20 / 6.0	2022-08-05 09:41:12 -07:00
freezer.c	…
gen_kheaders.sh	kheaders: Have cpio unconditionally replace files	2022-05-08 03:16:59 +09:00
groups.c	security: Add LSM hook to setgroups() syscall	2022-07-15 18:21:49 +00:00
hung_task.c	kernel/hung_task: fix address space of proc_dohung_task_timeout_secs	2022-07-29 18:12:35 -07:00
iomem.c	…
irq_work.c	irq_work: use kasan_record_aux_stack_noalloc() record callstack	2022-04-15 14:49:55 -07:00
jump_label.c	jump_label: make initial NOP patching the special case	2022-06-24 09:48:55 +02:00
kallsyms.c	Updates to various subsystems which I help look after. lib, ocfs2,	2022-08-07 10:03:24 -07:00
kallsyms_internal.h	kallsyms: move declarations to internal header	2022-07-17 17:31:39 -07:00
kcmp.c	…
kcov.c	kcov: update pos before writing pc in trace function	2022-05-25 13:05:42 -07:00
kexec.c	…
kexec_core.c	kexec: drop weak attribute from functions	2022-07-15 12:21:16 -04:00
kexec_elf.c	…
kexec_file.c	Updates to various subsystems which I help look after. lib, ocfs2,	2022-08-07 10:03:24 -07:00
kexec_internal.h	…
kheaders.c	…
kmod.c	…
kprobes.c	kprobes: don't call disarm_kprobe() for disabled kprobes	2022-08-20 15:17:46 -07:00
ksysfs.c	kernel/ksysfs.c: use helper macro __ATTR_RW	2022-03-23 19:00:33 -07:00
kthread.c	kthread: make it clear that kthread_create_on_node() might be terminated by any fatal signal	2022-06-16 19:11:30 -07:00
latencytop.c	latencytop: move sysctl to its own file	2022-04-21 11:40:59 -07:00
module_signature.c	…
notifier.c	notifier: Add blocking/atomic_notifier_chain_register_unique_prio()	2022-05-19 19:30:30 +02:00
nsproxy.c	fs/exec: allow to unshare a time namespace on vfork+exec	2022-06-15 07:58:04 -07:00
padata.c	padata: replace cpumask_weight with cpumask_empty in padata.c	2022-01-31 11:21:46 +11:00
panic.c	linux-kselftest-kunit-5.20-rc1	2022-08-02 19:34:45 -07:00
params.c	kobject: remove kset from struct kset_uevent_ops callbacks	2021-12-28 11:26:18 +01:00
pid.c	pid: add pidfd_get_task() helper	2021-10-14 13:29:18 +02:00
pid_namespace.c	kernel: pid_namespace: use NULL instead of using plain integer as pointer	2022-04-29 14:38:00 -07:00
profile.c	profile: setup_profiling_timer() is moslty not implemented	2022-07-29 18:12:36 -07:00
ptrace.c	ptrace: fix clearing of JOBCTL_TRACED in ptrace_unfreeze_traced()	2022-07-09 11:06:19 -07:00
range.c	…
reboot.c	Merge branch 'rework/kthreads' into for-linus	2022-06-23 19:11:28 +02:00
regset.c	…
relay.c	relay: remove redundant assignment to pointer buf	2022-05-12 20:38:37 -07:00
resource.c	resource: Introduce alloc_free_mem_region()	2022-07-21 17:19:25 -07:00
resource_kunit.c	…
rseq.c	rseq: Kill process when unknown flags are encountered in ABI structures	2022-08-01 15:21:42 +02:00
scftorture.c	scftorture: Fix distribution of short handler delays	2022-04-11 17:07:29 -07:00
scs.c	kasan, vmalloc: only tag normal vmalloc allocations	2022-03-24 19:06:48 -07:00
seccomp.c	seccomp: Add wait_killable semantic to seccomp user notifier	2022-05-03 14:11:58 -07:00
signal.c	signal handling: don't use BUG_ON() for debugging	2022-07-07 09:53:43 -07:00
smp.c	locking/csd_lock: Change csdlock_debug from early_param to __setup	2022-07-19 11:40:00 -07:00
smpboot.c	cpu/hotplug: Allow the CPU in CPU_UP_PREPARE state to be brought up again.	2022-04-12 14:13:01 +02:00
smpboot.h	…
softirq.c	context_tracking: Take IRQ eqs entrypoints over RCU	2022-07-05 13:32:59 -07:00
stackleak.c	stackleak: add on/off stack variants	2022-05-08 01:33:09 -07:00
stacktrace.c	uaccess: remove CONFIG_SET_FS	2022-02-25 09:36:06 +01:00
static_call.c	static_call: Don't make __static_call_return0 static	2022-04-05 09:59:38 +02:00
static_call_inline.c	static_call: Don't make __static_call_return0 static	2022-04-05 09:59:38 +02:00
stop_machine.c	Scheduler changes in this cycle were:	2022-05-24 11:11:13 -07:00
sys.c	arm64/sme: Implement vector length configuration prctl()s	2022-04-22 18:50:54 +01:00
sys_ni.c	kernel/sys_ni: add compat entry for fadvise64_64	2022-08-20 15:17:45 -07:00
sysctl-test.c	…
sysctl.c	memory tiering: rate limit NUMA migration throughput	2022-09-11 20:25:54 -07:00
task_work.c	task_work: allow TWA_SIGNAL without a rescheduling IPI	2022-04-30 08:39:32 -06:00
taskstats.c	kernel: make taskstats available from all net namespaces	2022-04-29 14:38:03 -07:00
torture.c	torture: Wake up kthreads after storing task_struct pointer	2022-02-01 17:24:39 -08:00
tracepoint.c	…
tsacct.c	taskstats: version 12 with thread group and exe info	2022-04-29 14:38:03 -07:00
ucount.c	ucounts: Handle wrapping in is_ucounts_overlimit	2022-02-17 09:11:57 -06:00
uid16.c	…
uid16.h	…
umh.c	kthread: Don't allocate kthread_struct for init and umh	2022-05-06 14:49:44 -05:00
up.c	…
user-return-notifier.c	…
user.c	…
user_namespace.c	ucounts: Fix systemd LimitNPROC with private users regression	2022-02-25 10:40:14 -06:00
usermode_driver.c	blob_to_mnt(): kern_unmount() is needed to undo kern_mount()	2022-05-19 23:25:47 -04:00
utsname.c	…
utsname_sysctl.c	…
watch_queue.c	This was a moderately busy cycle for documentation, but nothing all that	2022-08-02 19:24:24 -07:00
watchdog.c	powerpc updates for 6.0	2022-08-06 16:38:17 -07:00
watchdog_hld.c	Revert "printk: add functions to prefer direct printing"	2022-06-23 18:41:40 +02:00
workqueue.c	drm for 5.20/6.0	2022-08-03 19:52:08 -07:00
workqueue_internal.h	…