Dirk Brandewie c4ee841f60 intel_pstate: add sample time scaling ...

The PID assumes that samples are of equal time, which for a deferable
timers this is not true when the system goes idle.  This causes the
PID to take a long time to converge to the min P state and depending
on the pattern of the idle load can make the P state appear stuck.

The hold-off value of three sample times before using the scaling is
to give a grace period for applications that have high performance
requirements and spend a lot of time idle,  The poster child for this
behavior is the ffmpeg benchmark in the Phoronix test suite.

Cc: 3.14+ <stable@vger.kernel.org> # 3.14+
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

2014-06-02 12:45:05 +02:00

..

acpi-cpufreq.c

Merge branch 'pm-cpufreq'

2014-04-08 13:28:02 +02:00

amd_freq_sensitivity.c

cpufreq: AMD "frequency sensitivity feedback" powersave bias for ondemand governor

2013-04-10 13:19:26 +02:00

arm_big_little_dt.c

PM / OPP: rename header to linux/pm_opp.h

2013-10-25 22:33:23 +02:00

arm_big_little.c

cpufreq: arm_big_little: set 'physical_cluster' for each CPU

2014-03-19 02:18:39 +01:00

arm_big_little.h

cpufreq: arm_big_little: add in-kernel switching (IKS) support

2013-10-31 00:10:53 +01:00

at32ap-cpufreq.c

cpufreq: at32ap: don't declare local variable as static

2014-04-07 14:31:33 +02:00

blackfin-cpufreq.c

cpufreq: Remove cpufreq_generic_exit()

2014-03-12 01:06:00 +01:00

cpufreq_conservative.c

cpufreq: conservative: set requested_freq to policy max when it is over policy max

2013-11-12 23:18:20 +01:00

cpufreq_governor.c

cpufreq: remove race while accessing cur_policy

2014-05-20 01:25:15 +02:00

cpufreq_governor.h

cpufreq: Fix timer/workqueue corruption by protecting reading governor_enabled

2014-01-06 01:22:02 +01:00

cpufreq_ondemand.c

cpufreq: ondemand: Remove redundant return statement

2013-11-01 00:44:34 +01:00

cpufreq_performance.c

cpufreq: Clean up header files included in the core

2013-08-07 23:34:09 +02:00

cpufreq_powersave.c

cpufreq: Clean up header files included in the core

2013-08-07 23:34:09 +02:00

cpufreq_stats.c

ACPI and power management updates for 3.15-rc1

2014-04-01 12:48:54 -07:00

cpufreq_userspace.c

cpufreq / governor: Remove fossil comment

2013-10-17 23:00:20 +02:00

cpufreq-cpu0.c

cpufreq: cpu0: drop wrong devm usage

2014-05-20 01:29:20 +02:00

cpufreq-nforce2.c

cpufreq: Convert existing drivers to use cpufreq_freq_transition_{begin|end}

2014-03-26 16:41:41 +01:00

cpufreq.c

cpufreq: Make cpufreq_notify_transition & cpufreq_notify_post_transition static

2014-03-26 16:41:41 +01:00

cris-artpec3-cpufreq.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

cris-etraxfs-cpufreq.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

davinci-cpufreq.c

cpufreq: Remove cpufreq_generic_exit()

2014-03-12 01:06:00 +01:00

dbx500-cpufreq.c

cpufreq: introduce cpufreq_generic_get() routine

2014-01-17 02:00:44 +01:00

e_powersaver.c

cpufreq: add 'freq_table' in struct cpufreq_policy

2014-03-12 01:06:00 +01:00

elanfreq.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

exynos4x12-cpufreq.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

exynos4210-cpufreq.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

exynos5250-cpufreq.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

exynos5440-cpufreq.c

cpufreq: Convert existing drivers to use cpufreq_freq_transition_{begin|end}

2014-03-26 16:41:41 +01:00

exynos-cpufreq.c

cpufreq: Remove cpufreq_generic_exit()

2014-03-12 01:06:00 +01:00

exynos-cpufreq.h

cpufreq: exynos: move definitions for exynos-cpufreq into drivers/cpufreq/

2013-12-19 05:21:18 +09:00

freq_table.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

gx-suspmod.c

cpufreq: Convert existing drivers to use cpufreq_freq_transition_{begin|end}

2014-03-26 16:41:41 +01:00

highbank-cpufreq.c

cpufreq: highbank-cpufreq: Enable Midway/ECX-2000

2013-10-17 00:53:08 +02:00

ia64-acpi-cpufreq.c

cpufreq: use kzalloc() to allocate memory for cpufreq_frequency_table

2014-04-07 14:43:49 +02:00

imx6q-cpufreq.c

cpufreq: Remove cpufreq_generic_exit()

2014-03-12 01:06:00 +01:00

integrator-cpufreq.c

cpufreq: Convert existing drivers to use cpufreq_freq_transition_{begin|end}

2014-03-26 16:41:41 +01:00

intel_pstate.c

intel_pstate: add sample time scaling

2014-06-02 12:45:05 +02:00

Kconfig

cpufreq: enable ARM drivers on arm64

2014-03-01 00:55:40 +01:00

Kconfig.arm

cpufreq: highbank: fix ARM_HIGHBANK_CPUFREQ dependency warning

2014-04-22 00:09:09 +02:00

Kconfig.powerpc

cpufreq: powernv: cpufreq driver for powernv platform

2014-04-07 14:35:27 +02:00

Kconfig.x86

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2013-11-15 16:47:22 -08:00

kirkwood-cpufreq.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

longhaul.c

cpufreq: longhaul: Fix double invocation of cpufreq_freq_transition_begin/end

2014-04-29 01:22:52 +02:00

longhaul.h

cpufreq: delete __cpuinit usage from all cpufreq files

2013-07-14 19:36:57 -04:00

longrun.c

cpufreq: add new routine cpufreq_verify_within_cpu_limits()

2013-10-16 00:50:23 +02:00

loongson2_cpufreq.c

MIPS/loongson2_cpufreq: Fix CPU clock rate setting

2014-05-13 00:29:41 +02:00

Makefile

cpufreq: powernv: cpufreq driver for powernv platform

2014-04-07 14:35:27 +02:00

maple-cpufreq.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

omap-cpufreq.c

cpufreq: add 'freq_table' in struct cpufreq_policy

2014-03-12 01:06:00 +01:00

p4-clockmod.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

pasemi-cpufreq.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

pcc-cpufreq.c

cpufreq: Convert existing drivers to use cpufreq_freq_transition_{begin|end}

2014-03-26 16:41:41 +01:00

pmac32-cpufreq.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

pmac64-cpufreq.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

powernow-k6.c

cpufreq: powernow-k6: Fix double invocation of cpufreq_freq_transition_begin/end

2014-04-29 01:22:53 +02:00

powernow-k7.c

cpufreq: powernow-k7: Fix double invocation of cpufreq_freq_transition_begin/end

2014-04-29 01:22:54 +02:00

powernow-k7.h

[CPUFREQ] Move x86 drivers to drivers/cpufreq/

2011-05-19 18:51:07 -04:00

powernow-k8.c

cpufreq: use kzalloc() to allocate memory for cpufreq_frequency_table

2014-04-07 14:43:49 +02:00

powernow-k8.h

cpufreq: Remove support for hardware P-state chips from powernow-k8

2012-09-09 22:05:30 +02:00

powernv-cpufreq.c

cpufreq, powernv: Fix build failure on UP

2014-04-21 23:43:38 +02:00

ppc_cbe_cpufreq_pervasive.c

cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq

2013-04-10 13:19:26 +02:00

ppc_cbe_cpufreq_pmi.c

cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq

2013-04-10 13:19:26 +02:00

ppc_cbe_cpufreq.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

ppc_cbe_cpufreq.h

cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq

2013-04-10 13:19:26 +02:00

ppc-corenet-cpufreq.c

cpufreq: ppc-corenet-cpufreq: Fix __udivdi3 modpost error

2014-04-29 01:28:17 +02:00

pxa2xx-cpufreq.c

cpufreq: Remove cpufreq_generic_exit()

2014-03-12 01:06:00 +01:00

pxa3xx-cpufreq.c

cpufreq: Remove cpufreq_generic_exit()

2014-03-12 01:06:00 +01:00

s3c24xx-cpufreq-debugfs.c

cpufreq: s3c24xx: move cpufreq driver to drivers/cpufreq

2013-05-20 23:04:28 +09:00

s3c24xx-cpufreq.c

cpufreq: use kzalloc() to allocate memory for cpufreq_frequency_table

2014-04-07 14:43:49 +02:00

s3c64xx-cpufreq.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

s3c2410-cpufreq.c

cpufreq: s3c24xx: move cpufreq driver to drivers/cpufreq

2013-05-20 23:04:28 +09:00

s3c2412-cpufreq.c

cpufreq: s3c24xx: move cpufreq driver to drivers/cpufreq

2013-05-20 23:04:28 +09:00

s3c2416-cpufreq.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

s3c2440-cpufreq.c

cpufreq: s3c2440: Staticize local variables

2014-01-06 01:18:33 +01:00

s5pv210-cpufreq.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

sa1100-cpufreq.c

cpufreq: Mark ARM drivers with CPUFREQ_NEED_INITIAL_FREQ_CHECK flag

2014-01-06 14:17:25 +01:00

sa1110-cpufreq.c

cpufreq: Mark ARM drivers with CPUFREQ_NEED_INITIAL_FREQ_CHECK flag

2014-01-06 14:17:25 +01:00

sc520_freq.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

sh-cpufreq.c

cpufreq: Convert existing drivers to use cpufreq_freq_transition_{begin|end}

2014-03-26 16:41:41 +01:00

sparc-us2e-cpufreq.c

cpufreq: add 'freq_table' in struct cpufreq_policy

2014-03-12 01:06:00 +01:00

sparc-us3-cpufreq.c

cpufreq: add 'freq_table' in struct cpufreq_policy

2014-03-12 01:06:00 +01:00

spear-cpufreq.c

cpufreq: use kzalloc() to allocate memory for cpufreq_frequency_table

2014-04-07 14:43:49 +02:00

speedstep-centrino.c

cpufreq: add 'freq_table' in struct cpufreq_policy

2014-03-12 01:06:00 +01:00

speedstep-ich.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

speedstep-lib.c

cpufreq: Add support for x86 cpuinfo auto loading v4

2012-01-26 16:49:06 -08:00

speedstep-lib.h

[CPUFREQ] Move x86 drivers to drivers/cpufreq/

2011-05-19 18:51:07 -04:00

speedstep-smi.c

cpufreq: create another field .flags in cpufreq_frequency_table

2014-04-07 14:43:50 +02:00

tegra-cpufreq.c

cpufreq: add 'freq_table' in struct cpufreq_policy

2014-03-12 01:06:00 +01:00

unicore2-cpufreq.c

cpufreq: unicore32: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERO

2014-04-21 23:42:27 +02:00

vexpress-spc-cpufreq.c

cpufreq: arm_big_little: add vexpress SPC interface driver

2013-10-30 00:48:26 +01:00