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linux/drivers/cpufreq
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Rafael J. Wysocki 4d81b0f9e6 cpufreq: pcc-cpufreq: Disable dynamic scaling on many-CPU systems 
The firmware interface used by the pcc-cpufreq driver is
fundamentally not scalable and using it for dynamic CPU performance
scaling on systems with many CPUs leads to degraded performance.

For this reason, disable dynamic CPU performance scaling on systems
with pcc-cpufreq where the number of CPUs present at the driver init
time is greater than 4.  Also make the driver print corresponding
complaints to the kernel log.

Reported-by: Andreas Herrmann <aherrmann@suse.com>
Tested-by: Andreas Herrmann <aherrmann@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-07-18 10:15:07 +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_dt.c
cpufreq: arm_big_little: make cpufreq_arm_bL_ops structures const
2017-11-08 23:22:20 +01:00
arm_big_little.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
arm_big_little.h
cpufreq: arm_big_little: make function arguments and structure pointer const
2017-11-08 23:22:19 +01:00
armada-37xx-cpufreq.c
cpufreq: armada-37xx: Add AVS support
2018-07-18 10:10:25 +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
cpufreq / CPPC: Add cpuinfo_cur_freq support for CPPC
2018-07-18 10:13:16 +02:00
cpufreq_conservative.c
cpufreq: governor: Drop min_sampling_rate
2017-07-22 02:25:20 +02:00
cpufreq_governor_attr_set.c
cpufreq: governor: Move abstract gov_attr_set code to seperate file
2016-04-02 01:09:01 +02:00
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: Replace "max_transition_latency" with "dynamic_switching"
2017-07-26 00:15:45 +02:00
cpufreq_ondemand.c
cpufreq: governor: Drop min_sampling_rate
2017-07-22 02:25:20 +02:00
cpufreq_ondemand.h
cpufreq: ondemand: Don't keep a copy of freq_table pointer
2016-06-09 00:58:06 +02:00
cpufreq_performance.c
cpufreq: governor: Get rid of governor events
2016-06-02 23:24:15 +02:00
cpufreq_powersave.c
cpufreq: governor: Get rid of governor events
2016-06-02 23:24:15 +02:00
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
cpufreq: governor: Get rid of governor events
2016-06-02 23:24:15 +02:00
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: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag
2017-07-26 00:15:46 +02:00
cpufreq.c
cpufreq: Use static SRCU initializer
2018-05-30 11:16:59 +02:00
davinci-cpufreq.c
ARM: davinci: da850: fix da850_set_pll0rate()
2017-01-02 15:02:51 +05:30
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
cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag
2017-07-26 00:15:46 +02:00
highbank-cpufreq.c
Merge branch 'mailbox-for-linus' of git://git.linaro.org/landing-teams/working/fujitsu/integration
2014-10-21 11:21:19 -07:00
ia64-acpi-cpufreq.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
imx6q-cpufreq.c
cpufreq: imx6q/thermal: imx: register cooling device depending on OF
2018-07-02 11:26:36 +02:00
intel_pstate.c
cpufreq: intel_pstate: use match_string() helper
2018-07-02 11:25:40 +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
cpufreq: qoriq: rename the driver
2015-03-18 22:35:16 +01:00
Kconfig.x86
sched/x86: Change CONFIG_SCHED_ITMT to CONFIG_SCHED_MC_PRIO
2016-11-30 08:27:08 +01:00
kirkwood-cpufreq.c
cpufreq: kirkwood-cpufreq:- Handle return value of clk_prepare_enable()
2017-05-30 00:09:41 +02:00
longhaul.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
longhaul.h
…
longrun.c
cpufreq: Don't set transition_latency for setpolicy drivers
2017-07-26 00:15:43 +02:00
loongson1-cpufreq.c
CPUFREQ: Loongson1: Replace goto out with return in ls1x_cpufreq_probe()
2016-05-13 14:02:08 +02:00
loongson2_cpufreq.c
cpufreq: Loongson2: constify platform_device_id
2017-08-18 01:44:21 +02:00
Makefile
cpufreq: Add Kryo CPU scaling driver
2018-05-30 12:53:11 +02:00
maple-cpufreq.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
mediatek-cpufreq.c
cpufreq: mediatek: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
mvebu-cpufreq.c
cpufreq: mvebu: Free opp if registering failed
2017-12-16 02:29:43 +01:00
omap-cpufreq.c
PM / OPP: Update OPP users to put reference
2017-01-30 09:22:21 +01:00
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: pcc-cpufreq: Disable dynamic scaling on many-CPU systems
2018-07-18 10:15:07 +02:00
pmac32-cpufreq.c
cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag
2017-07-26 00:15:46 +02:00
pmac64-cpufreq.c
cpufreq: Convert to using %pOF instead of full_name
2017-08-25 01:20:46 +02:00
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_pervasive.c
…
ppc_cbe_cpufreq_pmi.c
cpufreq: Remove CPUFREQ_START notifier event
2017-02-04 00:05:30 +01:00
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
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
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: Silently error out on EPROBE_DEFER
2018-07-18 10:14:38 +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
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
s3c24xx-cpufreq.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
s3c64xx-cpufreq.c
cpufreq: s3c64xx: remove incorrect __init annotation
2016-12-21 02:54:18 +01:00
s3c2410-cpufreq.c
…
s3c2412-cpufreq.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
s3c2416-cpufreq.c
cpufreq: s3c2416: double free on driver init error path
2017-02-09 01:22:45 +01:00
s3c2440-cpufreq.c
cpufreq: s3c2440: fix spelling mistake: "divsiors" -> "divisors"
2018-05-10 11:50:42 +02:00
s5pv210-cpufreq.c
cpufreq: s5pv210: add missing of_node_put()
2017-07-26 22:54:01 +02:00
sa1100-cpufreq.c
cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag
2017-07-26 00:15:46 +02:00
sa1110-cpufreq.c
cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag
2017-07-26 00:15:46 +02:00
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
cpufreq: Convert to using %pOF instead of full_name
2017-08-25 01:20:46 +02:00
tango-cpufreq.c
cpufreq: dt: Don't use generic platdev driver for tango
2017-07-22 02:20:59 +02:00
tegra20-cpufreq.c
cpufreq: tegra20: Wrap cpufreq into platform driver
2018-05-21 13:44:24 +02:00
tegra124-cpufreq.c
cpufreq: tegra124: No need of setting platform-data
2016-04-09 01:12:09 +02:00
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
cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag
2017-07-26 00:15:46 +02:00
vexpress-spc-cpufreq.c
cpufreq: arm_big_little: make cpufreq_arm_bL_ops structures const
2017-11-08 23:22:20 +01:00