redonkable/alistair23-linux
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alistair23-linux/drivers/cpufreq
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Srinivas Pandruvada 01e61a42a5 cpufreq: intel_pstate: Limit the scope of HWP dynamic boost platforms 
Dynamic boosting of HWP performance on IO wake showed significant
improvement to IO workloads. This series was intended for Skylake Xeon
platforms only and feature was enabled by default based on CPU model
number.

But some Xeon platforms reused the Skylake desktop CPU model number. This
caused some undesirable side effects to some graphics workloads. Since
they are heavily IO bound, the increase in CPU performance decreased the
power available for GPU to do its computing and hence decrease in graphics
benchmark performance.

For example on a Skylake desktop, GpuTest benchmark showed average FPS
reduction from 529 to 506.

This change makes sure that HWP boost feature is only enabled for Skylake
server platforms by using ACPI FADT preferred PM Profile. If some desktop
users wants to get benefit of boost, they can still enable boost from
intel_pstate sysfs attribute "hwp_dynamic_boost".

Fixes: 41ab43c9c8 (cpufreq: intel_pstate: enable boost for Skylake Xeon)
Link: https://bugs.freedesktop.org/show_bug.cgi?id=107410
Reported-by: Eero Tamminen <eero.t.tamminen@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-07-31 10:39:58 +02:00
..
acpi-cpufreq.c Additional power management updates for 4.18-rc1 2018-06-13 07:24:18 -07:00
amd_freq_sensitivity.c cpufreq: AMD: Ignore the check for ProcFeedback in ST/CZ 2018-02-07 11:26:37 +01:00
arm_big_little.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
arm_big_little.h
arm_big_little_dt.c
armada-37xx-cpufreq.c cpufreq: add suspend/resume support in Armada 37xx DVFS driver 2018-05-10 11:43:59 +02:00
bmips-cpufreq.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
brcmstb-avs-cpufreq.c treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
cppc_cpufreq.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
cpufreq-dt-platdev.c cpufreq: Add Kryo CPU scaling driver 2018-05-30 12:53:11 +02:00
cpufreq-dt.c cpufreq: dt: Allow platform specific suspend/resume callbacks 2018-05-10 11:43:59 +02:00
cpufreq-dt.h cpufreq: dt: Allow platform specific suspend/resume callbacks 2018-05-10 11:43:59 +02:00
cpufreq-nforce2.c
cpufreq.c cpufreq: Use static SRCU initializer 2018-05-30 11:16:59 +02:00
cpufreq_conservative.c
cpufreq_governor.c cpufreq: governors: Fix long idle detection logic in load calculation 2018-06-08 11:40:44 +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: stats: Change return type of cpufreq_stats_update() as void 2018-01-05 13:22:46 +01:00
cpufreq_userspace.c
davinci-cpufreq.c
e_powersaver.c cpufreq: e_powersaver: Don't validate the frequency table twice 2018-03-20 12:07:52 +01:00
elanfreq.c cpufreq: elanfreq: Don't validate the frequency table twice 2018-03-20 12:07:52 +01:00
exynos5440-cpufreq.c cpufreq: Add and use cpufreq_for_each_{valid_,}entry_idx() 2018-02-08 10:21:39 +01:00
freq_table.c cpufreq: Drop cpufreq_table_validate_and_show() 2018-04-10 08:40:45 +02:00
gx-suspmod.c
highbank-cpufreq.c
ia64-acpi-cpufreq.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
imx6q-cpufreq.c Additional power management updates for 4.18-rc1 2018-06-13 07:24:18 -07:00
intel_pstate.c cpufreq: intel_pstate: Limit the scope of HWP dynamic boost platforms 2018-07-31 10:39:58 +02:00
Kconfig cpufreq: remove at32ap-cpufreq 2018-02-07 11:44:23 +01:00
Kconfig.arm cpufreq: kryo: allow building as a loadable module 2018-06-06 08:29:29 +02:00
Kconfig.powerpc
Kconfig.x86
kirkwood-cpufreq.c
longhaul.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
longhaul.h
longrun.c
loongson1-cpufreq.c
loongson2_cpufreq.c
Makefile cpufreq: Add Kryo CPU scaling driver 2018-05-30 12:53:11 +02:00
maple-cpufreq.c
mediatek-cpufreq.c cpufreq: mediatek: Don't validate the frequency table twice 2018-03-20 12:07:52 +01:00
mvebu-cpufreq.c
omap-cpufreq.c
p4-clockmod.c cpufreq: p4-clockmod: Don't validate the frequency table twice 2018-03-20 12:07:52 +01:00
pasemi-cpufreq.c cpufreq: Add and use cpufreq_for_each_{valid_,}entry_idx() 2018-02-08 10:21:39 +01:00
pcc-cpufreq.c cpufreq: intel_pstate: Register when ACPI PCCH is present 2018-07-18 13:38:37 +02:00
pmac32-cpufreq.c
pmac64-cpufreq.c
powernow-k6.c cpufreq: powernow: Don't validate the frequency table twice 2018-03-20 12:07:52 +01:00
powernow-k7.c cpufreq: powernow: Don't validate the frequency table twice 2018-03-20 12:07:52 +01:00
powernow-k7.h
powernow-k8.c cpufreq: powernow: Don't validate the frequency table twice 2018-03-20 12:07:52 +01:00
powernow-k8.h
powernv-cpufreq.c cpufreq: powernv: Fix hardlockup due to synchronous smp_call in timer interrupt 2018-04-27 16:16:10 +10:00
ppc_cbe_cpufreq.c cpufreq: ppc_cbe: Don't validate the frequency table twice 2018-03-20 12:07:52 +01:00
ppc_cbe_cpufreq.h
ppc_cbe_cpufreq_pervasive.c
ppc_cbe_cpufreq_pmi.c
pxa2xx-cpufreq.c cpufreq: pxa: Don't validate the frequency table twice 2018-03-20 12:07:52 +01:00
pxa3xx-cpufreq.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
qcom-cpufreq-kryo.c cpufreq: qcom-kryo: add NULL entry to the end of_device_id array 2018-07-24 10:44:57 +02:00
qoriq-cpufreq.c cpufreq: qoirq: Don't validate the frequency table twice 2018-03-20 12:07:52 +01:00
s3c24xx-cpufreq-debugfs.c
s3c24xx-cpufreq.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
s3c64xx-cpufreq.c
s3c2410-cpufreq.c
s3c2412-cpufreq.c
s3c2416-cpufreq.c
s3c2440-cpufreq.c cpufreq: s3c2440: fix spelling mistake: "divsiors" -> "divisors" 2018-05-10 11:50:42 +02:00
s5pv210-cpufreq.c
sa1100-cpufreq.c
sa1110-cpufreq.c
sc520_freq.c cpufreq: sc520: Don't validate the frequency table twice 2018-03-20 12:07:52 +01:00
scmi-cpufreq.c firmware: arm_scmi: rename get_transition_latency and add_opps_to_device 2018-05-10 10:49:40 +01:00
scpi-cpufreq.c cpufreq: scpi: Don't validate the frequency table twice 2018-03-20 12:07:52 +01:00
sfi-cpufreq.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
sh-cpufreq.c cpufreq: sh: Don't validate the frequency table twice 2018-03-20 12:07:52 +01:00
sparc-us2e-cpufreq.c cpufreq: sparc: Don't validate the frequency table twice 2018-03-20 12:07:52 +01:00
sparc-us3-cpufreq.c cpufreq: sparc: Don't validate the frequency table twice 2018-03-20 12:07:52 +01:00
spear-cpufreq.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
speedstep-centrino.c cpufreq: speedstep: Don't validate the frequency table twice 2018-03-20 12:07:52 +01:00
speedstep-ich.c cpufreq: speedstep: Don't validate the frequency table twice 2018-03-20 12:07:52 +01:00
speedstep-lib.c cpufreq: speedstep: fix speedstep_detect_processor()'s return type 2018-05-10 11:46:00 +02:00
speedstep-lib.h
speedstep-smi.c cpufreq: speedstep: Don't validate the frequency table twice 2018-03-20 12:07:52 +01:00
sti-cpufreq.c
tango-cpufreq.c
tegra20-cpufreq.c cpufreq: tegra20: Wrap cpufreq into platform driver 2018-05-21 13:44:24 +02:00
tegra124-cpufreq.c
tegra186-cpufreq.c cpufreq: tegra186: Don't validate the frequency table twice 2018-03-20 12:07:53 +01:00
ti-cpufreq.c cpufreq: ti-cpufreq: Use devres managed API in probe() 2018-06-06 08:34:31 +02:00
unicore2-cpufreq.c
vexpress-spc-cpufreq.c