Quentin Perret 531b5c9f5c sched/topology: Make Energy Aware Scheduling depend on schedutil ... Energy Aware Scheduling (EAS) is designed with the assumption that frequencies of CPUs follow their utilization value. When using a CPUFreq governor other than schedutil, the chances of this assumption being true are small, if any. When schedutil is being used, EAS' predictions are at least consistent with the frequency requests. Although those requests have no guarantees to be honored by the hardware, they should at least guide DVFS in the right direction and provide some hope in regards to the EAS model being accurate. To make sure EAS is only used in a sane configuration, create a strong dependency on schedutil being used. Since having sugov compiled-in does not provide that guarantee, make CPUFreq call a scheduler function on governor changes hence letting it rebuild the scheduling domains, check the governors of the online CPUs, and enable/disable EAS accordingly. 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: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> 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: 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/20181203095628.11858-9-quentin.perret@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>		2018-12-11 15:17:00 +01:00
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acpi-cpufreq.c	cpufreq: Add Hygon Dhyana support	2018-09-27 18:29:00 +02:00
amd_freq_sensitivity.c	cpufreq: Add Hygon Dhyana support	2018-09-27 18:29:00 +02:00
arm_big_little.c
arm_big_little.h
armada-37xx-cpufreq.c	cpufreq: armada-37xx: Add AVS support	2018-07-18 10:10:25 +02:00
bmips-cpufreq.c
brcmstb-avs-cpufreq.c
cppc_cpufreq.c	cpufreq / CPPC: Mark acpi_ids as used	2018-10-03 13:36:27 +02:00
cpufreq-dt-platdev.c	cpufreq: dt-platdev: allow RK3399 to have separate tunables per cluster	2018-10-08 08:55:44 +02:00
cpufreq-dt.c	cpufreq: dt: Try freeing static OPPs only if we have added them	2018-10-04 09:11:38 +05:30
cpufreq-dt.h
cpufreq-nforce2.c
cpufreq.c	sched/topology: Make Energy Aware Scheduling depend on schedutil	2018-12-11 15:17:00 +01:00
cpufreq_conservative.c	cpufreq: conservative: Take limits changes into account properly	2018-10-16 12:34:45 +02:00
cpufreq_governor.c	cpufreq: governor: Avoid accessing invalid governor_data	2018-08-16 23:03:29 +02:00
cpufreq_governor.h
cpufreq_governor_attr_set.c
cpufreq_ondemand.c
cpufreq_ondemand.h
cpufreq_performance.c
cpufreq_powersave.c
cpufreq_stats.c
cpufreq_userspace.c
davinci-cpufreq.c
e_powersaver.c
elanfreq.c
freq_table.c
gx-suspmod.c
highbank-cpufreq.c
ia64-acpi-cpufreq.c
imx6q-cpufreq.c	cpufreq: imx6q: add return value check for voltage scale	2018-11-07 13:31:07 +01:00
intel_pstate.c	cpufreq: intel_pstate: Fix compilation for !CONFIG_ACPI	2018-10-25 18:37:06 +02:00
Kconfig
Kconfig.arm	cpufreq: remove unused arm_big_little_dt driver	2018-10-25 18:39:02 +02:00
Kconfig.powerpc
Kconfig.x86
kirkwood-cpufreq.c
longhaul.c
longhaul.h
longrun.c
loongson1-cpufreq.c
loongson2_cpufreq.c
Makefile	cpufreq: remove unused arm_big_little_dt driver	2018-10-25 18:39:02 +02:00
maple-cpufreq.c
mediatek-cpufreq.c
mvebu-cpufreq.c	cpufreq: mvebu: Remove OPPs using dev_pm_opp_remove()	2018-09-19 14:56:44 -07:00
omap-cpufreq.c
p4-clockmod.c
pasemi-cpufreq.c
pcc-cpufreq.c	Merge back cpufreq material for 4.19.	2018-07-25 13:28:01 +02:00
pmac32-cpufreq.c
pmac64-cpufreq.c
powernow-k6.c
powernow-k7.c
powernow-k7.h
powernow-k8.c
powernow-k8.h
powernv-cpufreq.c	cpufreq: powernv: Remove global pstate ramp-down timer in POWER9	2018-07-09 18:06:02 +10:00
ppc_cbe_cpufreq.c
ppc_cbe_cpufreq.h
ppc_cbe_cpufreq_pervasive.c
ppc_cbe_cpufreq_pmi.c
pxa2xx-cpufreq.c
pxa3xx-cpufreq.c
qcom-cpufreq-kryo.c	cpufreq: qcom-kryo: Fix section annotations	2018-09-29 15:01:10 +02:00
qoriq-cpufreq.c
s3c24xx-cpufreq-debugfs.c
s3c24xx-cpufreq.c
s3c64xx-cpufreq.c
s3c2410-cpufreq.c
s3c2412-cpufreq.c
s3c2416-cpufreq.c
s3c2440-cpufreq.c
s5pv210-cpufreq.c	cpufreq: Convert to using %pOFn instead of device_node.name	2018-09-10 12:20:28 +02:00
sa1100-cpufreq.c
sa1110-cpufreq.c
sc520_freq.c
scmi-cpufreq.c
scpi-cpufreq.c
sfi-cpufreq.c
sh-cpufreq.c
sparc-us2e-cpufreq.c
sparc-us3-cpufreq.c
spear-cpufreq.c
speedstep-centrino.c
speedstep-ich.c
speedstep-lib.c
speedstep-lib.h
speedstep-smi.c
sti-cpufreq.c
tango-cpufreq.c
tegra20-cpufreq.c
tegra124-cpufreq.c
tegra186-cpufreq.c	cpufreq: tegra186: don't pass GFP_DMA32 to dma_alloc_coherent()	2018-10-17 09:25:38 +02:00
ti-cpufreq.c	cpufreq: ti-cpufreq: Only register platform_device when supported	2018-11-19 11:26:06 +01:00
unicore2-cpufreq.c
vexpress-spc-cpufreq.c