linux-uconsole/kernel
Quentin Perret 2a557de670 UPSTREAM: sched/topology: Introduce a sysctl for Energy Aware Scheduling
In its current state, Energy Aware Scheduling (EAS) starts automatically
on asymmetric platforms having an Energy Model (EM). However, there are
users who want to have an EM (for thermal management for example), but
don't want EAS with it.

In order to let users disable EAS explicitly, introduce a new sysctl
called 'sched_energy_aware'. It is enabled by default so that EAS can
start automatically on platforms where it makes sense. Flipping it to 0
rebuilds the scheduling domains and disables EAS.

Bug: 120440300
Signed-off-by: Quentin Perret <quentin.perret@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: adharmap@codeaurora.org
Cc: chris.redpath@arm.com
Cc: currojerez@riseup.net
Cc: dietmar.eggemann@arm.com
Cc: edubezval@gmail.com
Cc: gregkh@linuxfoundation.org
Cc: javi.merino@kernel.org
Cc: joel@joelfernandes.org
Cc: juri.lelli@redhat.com
Cc: morten.rasmussen@arm.com
Cc: patrick.bellasi@arm.com
Cc: pkondeti@codeaurora.org
Cc: rjw@rjwysocki.net
Cc: skannan@codeaurora.org
Cc: smuckle@google.com
Cc: srinivas.pandruvada@linux.intel.com
Cc: thara.gopinath@linaro.org
Cc: tkjos@google.com
Cc: valentin.schneider@arm.com
Cc: vincent.guittot@linaro.org
Cc: viresh.kumar@linaro.org
Link: https://lkml.kernel.org/r/20181203095628.11858-11-quentin.perret@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
(cherry picked from commit 8d5d0cfb63)
Signed-off-by: Quentin Perret <qperret@google.com>
Change-Id: I4ca842d07b82869cfab7542c8c4351f631e1024d
2020-02-19 10:50:59 +00:00
..
bpf This is the 4.19.99 stable release 2020-01-27 15:55:44 +01:00
cgroup This is the 4.19.102 stable release 2020-02-05 19:20:26 +00:00
configs kconfig: tinyconfig: remove stale stack protector fixups 2018-06-15 07:15:28 +09:00
debug This is the 4.19.99 stable release 2020-01-27 15:55:44 +01:00
dma dma-debug: add a schedule point in debug_dma_dump_mappings() 2020-01-04 19:12:43 +01:00
events This is the 4.19.103 stable release 2020-02-11 15:05:03 -08:00
gcov UPSTREAM: gcov: clang support 2019-05-17 16:05:09 -07:00
irq x86/apic/msi: Plug non-maskable MSI affinity race 2020-02-11 04:34:18 -08:00
livepatch livepatch: Nullify obj->mod in klp_module_coming()'s error path 2019-10-07 18:57:10 +02:00
locking locking/spinlock/debug: Fix various data races 2020-01-12 12:17:05 +01:00
power This is the 4.19.94 stable release 2020-01-09 16:14:43 +01:00
printk printk: fix exclusive_console replaying 2020-02-11 04:33:51 -08:00
rcu rcu: Avoid data-race in rcu_gp_fqs_check_wake() 2020-02-11 04:33:55 -08:00
sched UPSTREAM: sched/topology: Introduce a sysctl for Energy Aware Scheduling 2020-02-19 10:50:59 +00:00
time This is the 4.19.103 stable release 2020-02-11 15:05:03 -08:00
trace This is the 4.19.103 stable release 2020-02-11 15:05:03 -08:00
.gitignore BACKPORT: Provide in-kernel headers to make extending kernel easier 2019-06-12 12:33:20 +00:00
acct.c acct_on(): don't mess with freeze protection 2019-05-31 06:46:05 -07:00
async.c
audit.c audit: use ktime_get_coarse_real_ts64() for timestamps 2018-07-17 14:45:08 -04:00
audit.h
audit_fsnotify.c
audit_tree.c audit: Embed key into chunk 2019-12-13 08:51:11 +01:00
audit_watch.c audit_get_nd(): don't unlock parent too early 2019-12-13 08:51:02 +01:00
auditfilter.c audit: fix a memory leak bug 2019-05-31 06:46:17 -07:00
auditsc.c audit: print empty EXECVE args 2019-12-01 09:17:17 +01:00
backtracetest.c
bounds.c kbuild: fix kernel/bounds.c 'W=1' warning 2018-11-13 11:08:47 -08:00
capability.c LSM: generalize flag passing to security_capable 2020-01-23 08:21:29 +01:00
cfi.c ANDROID: add support for clang Control Flow Integrity (CFI) 2019-05-20 17:46:32 -07:00
compat.c BACKPORT: make 'user_access_begin()' do 'access_ok()' 2019-09-12 11:28:03 +00:00
configs.c
context_tracking.c
cpu.c This is the 4.19.86 stable release 2019-11-25 10:00:06 +01:00
cpu_pm.c
crash_core.c kernel/crash_core.c: print timestamp using time64_t 2018-08-22 10:52:47 -07:00
crash_dump.c
cred.c memcg: account security cred as well to kmemcg 2020-01-09 10:19:00 +01:00
delayacct.c UPSTREAM: delayacct: track delays from thrashing cache pages 2019-03-21 16:25:26 -07:00
dma.c
elfcore.c kernel/elfcore.c: include proper prototypes 2019-10-11 18:21:23 +02:00
exec_domain.c
exit.c exit: panic before exit_mm() on global init exit 2020-01-09 10:19:02 +01:00
extable.c
fail_function.c bpf/error-inject/kprobes: Clear current_kprobe and enable preempt in kprobe 2018-06-21 12:33:19 +02:00
fork.c This is the 4.19.99 stable release 2020-01-27 15:55:44 +01:00
freezer.c PM / reboot: Eliminate race between reboot and suspend 2018-08-06 12:35:20 +02:00
futex.c futex: Prevent robust futex exit race 2019-12-01 09:17:38 +01:00
gen_kheaders.sh BACKPORT: kheaders: Do not regenerate archive if config is not changed 2019-06-12 12:35:31 +00:00
groups.c
hung_task.c kernel: hung_task.c: disable on suspend 2019-04-20 09:16:02 +02:00
iomem.c
irq_work.c irq_work: Do not raise an IPI when queueing work on the local CPU 2019-05-31 06:46:19 -07:00
jump_label.c jump_label: move 'asm goto' support test to Kconfig 2019-06-04 08:02:34 +02:00
kallsyms.c ANDROID: kallsyms: strip hashes from function names with ThinLTO 2020-01-31 16:50:06 +00:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt kconfig: include kernel/Kconfig.preempt from init/Kconfig 2018-08-02 08:06:54 +09:00
kcov.c UPSTREAM: kcov: remote coverage support 2020-01-15 14:51:23 +00:00
kexec.c kexec: add call to LSM hook in original kexec_load syscall 2018-07-16 12:31:57 -07:00
kexec_core.c kexec: Allocate decrypted control pages for kdump if SME is enabled 2019-11-24 08:20:29 +01:00
kexec_file.c treewide: Use array_size() in vzalloc() 2018-06-12 16:19:22 -07:00
kexec_internal.h
kheaders.c BACKPORT: kheaders: Move from proc to sysfs 2019-06-12 12:33:54 +00:00
kmod.c
kprobes.c kprobes: Blacklist symbols in arch-defined prohibited area 2019-12-05 09:20:26 +01:00
ksysfs.c
kthread.c FROMLIST: refactor header includes to allow kthread.h inclusion in psi_types.h 2019-03-22 23:07:04 +00:00
latencytop.c
Makefile This is the 4.19.87 stable release 2019-12-01 09:53:43 +01:00
memremap.c mm/memory_hotplug: shrink zones when offlining memory 2020-01-29 16:43:27 +01:00
module-internal.h modsign: log module name in the event of an error 2018-07-02 11:36:17 +02:00
module.c This is the 4.19.103 stable release 2020-02-11 15:05:03 -08:00
module_signing.c modsign: log module name in the event of an error 2018-07-02 11:36:17 +02:00
notifier.c
nsproxy.c
padata.c padata: fix null pointer deref of pd->pinst 2020-02-14 16:33:28 -05:00
panic.c kernel/panic.c: do not append newline to the stack protector panic string 2019-12-01 09:17:10 +01:00
params.c
pid.c UPSTREAM: pid: add pidfd_open() 2019-08-12 13:36:37 -04:00
pid_namespace.c signal/pid_namespace: Fix reboot_pid_ns to use send_sig not force_sig 2019-07-26 09:14:01 +02:00
profile.c
ptrace.c ptrace: reintroduce usage of subjective credentials in ptrace_has_cap() 2020-01-23 08:21:29 +01:00
range.c
reboot.c PM / reboot: Eliminate race between reboot and suspend 2018-08-06 12:35:20 +02:00
relay.c relay: check return of create_buf_file() properly 2019-03-13 14:02:35 -07:00
resource.c resource: fix locking in find_next_iomem_res() 2019-09-16 08:22:20 +02:00
rseq.c rseq: uapi: Declare rseq_cs field as union, update includes 2018-07-10 22:18:52 +02:00
scs.c FROMLIST: scs: add support for stack usage debugging 2019-11-27 12:37:25 -08:00
seccomp.c LSM: generalize flag passing to security_capable 2020-01-23 08:21:29 +01:00
signal.c This is the 4.19.99 stable release 2020-01-27 15:55:44 +01:00
smp.c cpu/hotplug: Fix "SMT disabled by BIOS" detection for KVM 2019-02-12 19:47:25 +01:00
smpboot.c smpboot: Remove cpumask from the API 2018-07-03 09:20:44 +02:00
smpboot.h
softirq.c nohz: Fix missing tick reprogram when interrupting an inline softirq 2018-08-03 15:52:10 +02:00
stacktrace.c
stop_machine.c Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-08-13 11:25:07 -07:00
sys.c UPSTREAM: arm64: Tighten the PR_{SET, GET}_TAGGED_ADDR_CTRL prctl() unused arguments 2019-10-07 15:27:39 -04:00
sys_ni.c UPSTREAM: signal: support CLONE_PIDFD with pidfd_send_signal 2019-08-12 13:36:37 -04:00
sysctl.c UPSTREAM: sched/topology: Introduce a sysctl for Energy Aware Scheduling 2020-02-19 10:50:59 +00:00
sysctl_binary.c
task_work.c
taskstats.c taskstats: fix data-race 2020-01-09 10:18:59 +01:00
test_kprobes.c kprobes: Remove jprobe API implementation 2018-06-21 12:33:05 +02:00
torture.c torture: Keep old-school dmesg format 2018-06-25 11:30:10 -07:00
tracepoint.c tracepoint: Fix tracepoint array element size mismatch 2018-10-17 15:35:29 -04:00
tsacct.c
ucount.c
uid16.c
uid16.h
umh.c umh: fix race condition 2018-06-07 16:56:28 -04:00
up.c
user-return-notifier.c
user.c ANDROID: proc: Add /proc/uid directory 2019-03-06 15:59:21 +00:00
user_namespace.c userns: also map extents in the reverse map to kernel IDs 2018-11-13 11:09:00 -08:00
utsname.c
utsname_sysctl.c sys: don't hold uts_sem while accessing userspace memory 2018-08-11 02:05:53 -05:00
watchdog.c watchdog: Respect watchdog cpumask on CPU hotplug 2019-04-03 06:26:29 +02:00
watchdog_hld.c watchdog: Mark watchdog touch functions as notrace 2018-08-30 12:56:40 +02:00
workqueue.c This is the 4.19.90 stable release 2019-12-18 09:03:30 +01:00
workqueue_internal.h UPSTREAM: psi: fix aggregation idle shut-off 2019-03-21 16:25:27 -07:00