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v3.15.5
linux/drivers/cpufreq
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Doug Smythies 5abec5508d intel_pstate: Correct rounding in busy calculation 
commit 51d211e9c3 upstream.

There was a mistake in the actual rounding portion this previous patch:
f0fe3cd7e1 (intel_pstate: Correct rounding in busy calculation) such that
the rounding was asymetric and incorrect.

Severity: Not very serious, but can increase target pstate by one extra value.
For real world work flows the issue should self correct (but I have no proof).
It is the equivalent of different PID gains for positive and negative numbers.

Examples:
 -3.000000 used to round to -4, rounds to -3 with this patch.
 -3.503906 used to round to -5, rounds to -4 with this patch.

Fixes: f0fe3cd7e1 (intel_pstate: Correct rounding in busy calculation)
Signed-off-by: Doug Smythies <dsmythies@telus.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-09 11:21:28 -07:00
..
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
Merge tag 'pm+acpi-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
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: unlock when failing cpufreq_update_policy()
2014-07-06 18:59:12 -07:00
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: Correct rounding in busy calculation
2014-07-09 11:21:28 -07:00
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-cpu-freq: do_div use quotient
2014-07-06 18:59:12 -07:00
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