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Tim Chen 450e749707 sched/fair: Fix SMT4 group_smt_balance handling 
For SMT4, any group with more than 2 tasks will be marked as
group_smt_balance. Retain the behaviour of group_has_spare by marking
the busiest group as the group which has the least number of idle_cpus.

Also, handle rounding effect of adding (ncores_local + ncores_busy) when
the local is fully idle and busy group imbalance is less than 2 tasks.
Local group should try to pull at least 1 task in this case so imbalance
should be set to 2 instead.

Fixes: fee1759e4f04 ("sched/fair: Determine active load balance for SMT sched groups")
Acked-by: Shrikanth Hegde <sshegde@linux.vnet.ibm.com>
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: http://lkml.kernel.org/r/6cd1633036bb6b651af575c32c2a9608a106702c.camel@linux.intel.com
2023-09-13 15:03:06 +02:00
..
bpf
v6.6-vfs.ctime
2023-08-28 09:31:32 -07:00
cgroup
Linux 6.5-rc2
2023-07-19 09:43:25 +02:00
configs
mm/slab: rename CONFIG_SLAB to CONFIG_SLAB_DEPRECATED
2023-05-26 19:01:47 +02:00
debug
kdb: move kdb_send_sig() declaration to a better header file
2023-07-03 09:27:12 +01:00
dma
dma-mapping fixes for Linux 6.5
2023-07-09 10:24:22 -07:00
entry
entry: Remove empty addr_limit_user_check()
2023-08-23 10:32:39 +02:00
events
Perf events changes for v6.6:
2023-08-28 16:35:01 -07:00
futex
- Prevent the leaking of a debug timer in futex_waitv()
2023-01-01 11:15:05 -08:00
gcov
gcov: add support for checksum field
2022-12-21 14:31:52 -08:00
irq
Boring updates for the interrupt subsystem:
2023-08-28 14:33:11 -07:00
kcsan
kcsan: Don't expect 64 bits atomic builtins from 32 bits architectures
2023-06-09 23:29:50 +10:00
livepatch
livepatch: Make 'klp_stack_entries' static
2023-06-05 13:56:52 +02:00
locking
Misc x86 cleanups.
2023-08-28 17:05:58 -07:00
module
module: fix init_module_from_file() error handling
2023-07-04 10:17:11 -07:00
power
PM: hibernate: fix resume_store() return value when hibernation not available
2023-08-07 11:41:11 +02:00
printk
seqlock/latch: Provide raw_read_seqcount_latch_retry()
2023-06-05 21:11:03 +02:00
rcu
Merge branches 'doc.2023.07.14b', 'fixes.2023.08.16a', 'rcu-tasks.2023.07.24a', 'rcuscale.2023.07.14b', 'refscale.2023.07.14b', 'torture.2023.08.14a' and 'torturescripts.2023.07.20a' into HEAD
2023-08-16 14:31:08 -07:00
sched
sched/fair: Fix SMT4 group_smt_balance handling
2023-09-13 15:03:06 +02:00
time
clocksource: Handle negative skews in "skew is too large" messages
2023-07-14 15:17:09 -07:00
trace
tracing: Introduce pipe_cpumask to avoid race on trace_pipes
2023-08-21 11:17:14 -04:00
.gitignore
…
acct.c
acct: fix potential integer overflow in encode_comp_t()
2022-11-30 16:13:18 -08:00
async.c
…
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_watch.c
audit_init_parent(): constify path
2022-09-01 17:39:30 -04:00
audit.c
audit: use time_after to compare time
2022-08-29 19:47:03 -04:00
audit.h
audit: avoid missing-prototype warnings
2023-05-17 11:34:55 -04:00
auditfilter.c
…
auditsc.c
capability: just use a 'u64' instead of a 'u32[2]' array
2023-03-01 10:01:22 -08:00
backtracetest.c
…
bounds.c
mm: multi-gen LRU: minimal implementation
2022-09-26 19:46:09 -07:00
capability.c
capability: fix kernel-doc warnings in capability.c
2023-05-22 14:30:52 -04:00
cfi.c
cfi: Switch to -fsanitize=kcfi
2022-09-26 10:13:13 -07:00
compat.c
sched_getaffinity: don't assume 'cpumask_size()' is fully initialized
2023-03-14 19:32:38 -07:00
configs.c
…
context_tracking.c
locking/atomic: treewide: use raw_atomic*_<op>()
2023-06-05 09:57:20 +02:00
cpu_pm.c
cpuidle, cpu_pm: Remove RCU fiddling from cpu_pm_{enter,exit}()
2023-01-13 11:48:15 +01:00
cpu.c
cpu/SMT: Fix cpu_smt_possible() comment
2023-07-31 17:32:44 +02:00
crash_core.c
mm, treewide: redefine MAX_ORDER sanely
2023-04-05 19:42:46 -07:00
crash_dump.c
…
cred.c
cred: Do not default to init_cred in prepare_kernel_cred()
2022-11-01 10:04:52 -07:00
delayacct.c
delayacct: track delays from IRQ/SOFTIRQ
2023-04-18 16:39:34 -07:00
dma.c
…
exec_domain.c
…
exit.c
fork, vhost: Use CLONE_THREAD to fix freezer/ps regression
2023-06-01 17:15:33 -04:00
extable.c
context_tracking: Take NMI eqs entrypoints over RCU
2022-07-05 13:32:59 -07:00
fail_function.c
kernel/fail_function: fix memory leak with using debugfs_lookup()
2023-02-08 13:36:22 +01:00
fork.c
kernel/fork: beware of __put_task_struct() calling context
2023-07-13 15:21:48 +02:00
freezer.c
freezer,sched: Rewrite core freezer logic
2022-09-07 21:53:50 +02:00
gen_kheaders.sh
Revert "kheaders: substituting --sort in archive creation"
2023-05-28 16:20:21 +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.c: set some hung_task.c variables storage-class-specifier to static
2023-04-08 13:45:37 -07:00
iomem.c
…
irq_work.c
trace: Add trace_ipi_send_cpu()
2023-03-24 11:01:29 +01:00
jump_label.c
jump_label: Prevent key->enabled int overflow
2022-12-01 15:53:05 -08:00
kallsyms_internal.h
kallsyms: Reduce the memory occupied by kallsyms_seqs_of_names[]
2022-11-12 18:47:36 -08:00
kallsyms_selftest.c
kallsyms: Fix kallsyms_selftest failure
2023-08-25 10:44:20 -07:00
kallsyms_selftest.h
kallsyms: Add self-test facility
2022-11-15 00:42:02 -08:00
kallsyms.c
kallsyms: Change func signature for cleanup_symbol_name()
2023-08-25 15:00:36 -07:00
kcmp.c
…
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
…
Kconfig.preempt
…
kcov.c
kcov: add prototypes for helper functions
2023-06-09 17:44:17 -07:00
kexec_core.c
kexec: enable kexec_crash_size to support two crash kernel regions
2023-06-09 17:44:24 -07:00
kexec_elf.c
…
kexec_file.c
- Arnd Bergmann has fixed a bunch of -Wmissing-prototypes in
2023-06-28 10:59:38 -07:00
kexec_internal.h
panic, kexec: make __crash_kexec() NMI safe
2022-09-11 21:55:06 -07:00
kexec.c
kexec: introduce sysctl parameters kexec_load_limit_*
2023-02-02 22:50:05 -08:00
kheaders.c
kheaders: Use array declaration instead of char
2023-03-24 20:10:59 -07:00
kprobes.c
kprobes: Prohibit probing on CFI preamble symbol
2023-07-29 23:32:26 +09:00
ksyms_common.c
kallsyms: make kallsyms_show_value() as generic function
2023-06-08 12:27:20 -07:00
ksysfs.c
kernel/ksysfs.c: use sysfs_emit for sysfs show handlers
2023-03-24 17:09:14 +01:00
kthread.c
- Arnd Bergmann has fixed a bunch of -Wmissing-prototypes in
2023-06-28 10:59:38 -07:00
latencytop.c
latencytop: use the last element of latency_record of system
2022-09-11 21:55:12 -07:00
Makefile
v6.5-rc1-modules-next
2023-06-28 15:51:08 -07:00
module_signature.c
…
notifier.c
notifiers: add tracepoints to the notifiers infrastructure
2023-04-08 13:45:38 -07:00
nsproxy.c
nsproxy: Convert nsproxy.count to refcount_t
2023-08-21 11:29:12 -07:00
padata.c
padata: use alignment when calculating the number of worker threads
2023-03-14 17:06:44 +08:00
panic.c
panic: hide unused global functions
2023-06-09 17:44:15 -07:00
params.c
kallsyms: Replace all non-returning strlcpy with strscpy
2023-06-14 12:27:38 -07:00
pid_namespace.c
pid: use struct_size_t() helper
2023-07-01 08:26:23 -07:00
pid_sysctl.h
kernel: pid_namespace: remove unused set_memfd_noexec_scope()
2023-06-19 16:19:28 -07:00
pid.c
pid: use struct_size_t() helper
2023-07-01 08:26:23 -07:00
profile.c
kernel/profile.c: simplify duplicated code in profile_setup()
2022-09-11 21:55:12 -07:00
ptrace.c
ptrace: Provide set/get interface for syscall user dispatch
2023-04-16 14:23:07 +02:00
range.c
…
reboot.c
kernel/reboot: Add SYS_OFF_MODE_RESTART_PREPARE mode
2022-10-04 15:59:36 +02:00
regset.c
…
relay.c
relayfs: fix out-of-bounds access in relay_file_read
2023-05-02 17:23:27 -07:00
resource_kunit.c
…
resource.c
dax/kmem: Fix leak of memory-hotplug resources
2023-02-17 14:58:01 -08:00
rseq.c
rseq: Extend struct rseq with per-memory-map concurrency ID
2022-12-27 12:52:12 +01:00
scftorture.c
scftorture: Pause testing after memory-allocation failure
2023-07-14 15:02:57 -07:00
scs.c
scs: add support for dynamic shadow call stacks
2022-11-09 18:06:35 +00:00
seccomp.c
seccomp: Add missing kerndoc notations
2023-08-17 12:32:15 -07:00
signal.c
mm: suppress mm fault logging if fatal signal already pending
2023-07-26 10:51:59 -07:00
smp.c
smp: Reduce NMI traffic from CSD waiters to CSD destination
2023-07-10 14:19:04 -07:00
smpboot.c
cpu/hotplug: Remove unused state functions
2023-05-15 13:45:00 +02:00
smpboot.h
…
softirq.c
sched/core: introduce sched_core_idle_cpu()
2023-07-13 15:21:50 +02:00
stackleak.c
stackleak: allow to specify arch specific stackleak poison function
2023-04-20 11:36:35 +02:00
stacktrace.c
…
static_call_inline.c
static_call: Add call depth tracking support
2022-10-17 16:41:16 +02:00
static_call.c
…
stop_machine.c
Scheduler changes in this cycle were:
2022-05-24 11:11:13 -07:00
sys_ni.c
asm-generic updates for 6.5
2023-07-06 10:06:04 -07:00
sys.c
prctl: move PR_GET_AUXV out of PR_MCE_KILL
2023-07-17 12:53:21 -07:00
sysctl-test.c
kernel/sysctl-test: use SYSCTL_{ZERO/ONE_HUNDRED} instead of i_{zero/one_hundred}
2022-09-08 16:56:45 -07:00
sysctl.c
v6.5-rc1-sysctl-next
2023-06-28 16:05:21 -07:00
task_work.c
task_work: use try_cmpxchg in task_work_add, task_work_cancel_match and task_work_run
2022-09-11 21:55:10 -07:00
taskstats.c
genetlink: start to validate reserved header bytes
2022-08-29 12:47:15 +01:00
torture.c
torture: Stop right-shifting torture_random() return values
2023-08-14 15:01:08 -07:00
tracepoint.c
tracepoint: Allow livepatch module add trace event
2023-02-18 14:34:36 -05:00
tsacct.c
…
ucount.c
ucounts: Split rlimit and ucount values and max values
2022-05-18 18:24:57 -05:00
uid16.c
…
uid16.h
…
umh.c
sysctl: fix unused proc_cap_handler() function warning
2023-06-29 15:19:43 -07:00
up.c
…
user_namespace.c
userns: fix a struct's kernel-doc notation
2023-02-02 22:50:04 -08:00
user-return-notifier.c
…
user.c
kernel/user: Allow user_struct::locked_vm to be usable for iommufd
2022-11-30 20:16:49 -04:00
usermode_driver.c
blob_to_mnt(): kern_unmount() is needed to undo kern_mount()
2022-05-19 23:25:47 -04:00
utsname_sysctl.c
utsname: simplify one-level sysctl registration for uts_kern_table
2023-04-13 11:49:35 -07:00
utsname.c
…
vhost_task.c
vhost: Fix worker hangs due to missed wake up calls
2023-06-08 15:43:09 -04:00
watch_queue.c
watch_queue: prevent dangling pipe pointer
2023-06-06 10:47:04 +02:00
watchdog_buddy.c
watchdog/hardlockup: move SMP barriers from common code to buddy code
2023-06-19 16:25:28 -07:00
watchdog_perf.c
watchdog/perf: add a weak function for an arch to detect if perf can use NMIs
2023-06-09 17:44:21 -07:00
watchdog.c
watchdog/sparc64: define HARDLOCKUP_DETECTOR_SPARC64
2023-06-19 16:25:29 -07:00
workqueue_internal.h
workqueue: Automatically mark CPU-hogging work items CPU_INTENSIVE
2023-05-17 17:02:08 -10:00
workqueue.c
workqueue: Scale up wq_cpu_intensive_thresh_us if BogoMIPS is below 4000
2023-07-25 11:49:57 -10:00