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Filename Latest commit message Latest commit date
Francisco Jerez 2423f3a7ef cpufreq: intel_pstate: Fix intel_pstate_get_hwp_max() for turbo disabled
[ Upstream commit eacc9c5a927e474c173a5d53dd7fb8e306511768 ]

This fixes the behavior of the scaling_max_freq and scaling_min_freq
sysfs files in systems which had turbo disabled by the BIOS.

Caleb noticed that the HWP is programmed to operate in the wrong
P-state range on his system when the CPUFREQ policy min/max frequency
is set via sysfs.  This seems to be because in his system
intel_pstate_get_hwp_max() is returning the maximum turbo P-state even
though turbo was disabled by the BIOS, which causes intel_pstate to
scale kHz frequencies incorrectly e.g. setting the maximum turbo
frequency whenever the maximum guaranteed frequency is requested via
sysfs.

Tested-by: Caleb Callaway <caleb.callaway@intel.com>
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
[ rjw: Minor subject edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-09-17 13:47:49 +02:00
arch ARC: [plat-hsdk]: Switch ethernet phy-mode to rgmii-id 2020-09-17 13:47:48 +02:00
block block: Set same_page to false in __bio_try_merge_page if ret is false 2020-09-17 13:47:44 +02:00
certs
crypto crypto: af_alg - Work around empty control messages without MSG_MORE 2020-09-03 11:27:05 +02:00
Documentation affs: fix basic permission bits to actually work 2020-09-09 19:12:34 +02:00
drivers cpufreq: intel_pstate: Fix intel_pstate_get_hwp_max() for turbo disabled 2020-09-17 13:47:49 +02:00
fs xfs: initialize the shortform attr header padding entry 2020-09-17 13:47:46 +02:00
include irqchip/eznps: Fix build error for !ARC700 builds 2020-09-17 13:47:47 +02:00
init
ipc
kernel kbuild: add variables for compression tools 2020-09-03 11:27:10 +02:00
lib
LICENSES
mm mm/khugepaged.c: fix khugepaged's request size in collapse_file 2020-09-09 19:12:37 +02:00
net cfg80211: Adjust 6 GHz frequency to channel conversion 2020-09-17 13:47:46 +02:00
samples
scripts checkpatch: fix the usage of capture group ( ... ) 2020-09-09 19:12:37 +02:00
security
sound ALSA: hda/tegra: Program WAKEEN register for Tegra 2020-09-17 13:47:46 +02:00
tools selftests/timers: Turn off timeout setting 2020-09-17 13:47:41 +02:00
usr
virt KVM: arm64: Only reschedule if MMU_NOTIFIER_RANGE_BLOCKABLE is not set 2020-08-26 10:41:08 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.65 2020-09-12 14:18:56 +02:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.