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Filename Latest commit message Latest commit date
Viresh Kumar c49cbc19b3 cpufreq: schedutil: Always process remote callback with slow switching
The frequency update from the utilization update handlers can be divided
into two parts:

(A) Finding the next frequency
(B) Updating the frequency

While any CPU can do (A), (B) can be restricted to a group of CPUs only,
depending on the current platform.

For platforms where fast cpufreq switching is possible, both (A) and (B)
are always done from the same CPU and that CPU should be capable of
changing the frequency of the target CPU.

But for platforms where fast cpufreq switching isn't possible, after
doing (A) we wake up a kthread which will eventually do (B). This
kthread is already bound to the right set of CPUs, i.e. only those which
can change the frequency of CPUs of a cpufreq policy. And so any CPU
can actually do (A) in this case, as the frequency is updated from the
right set of CPUs only.

Check cpufreq_can_do_remote_dvfs() only for the fast switching case.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-08-18 01:35:19 +02:00
arch xen/x86: fix cpu hotplug 2017-07-23 08:13:11 +02:00
block
certs
crypto
Documentation TTY/Serial fixes for 4.13-rc2 2017-07-22 09:00:24 -07:00
drivers cpufreq: Return 0 from ->fast_switch() on errors 2017-08-10 01:26:35 +02:00
firmware
fs
include cpufreq: Simplify cpufreq_can_do_remote_dvfs() 2017-08-08 17:09:02 +02:00
init
ipc
kernel cpufreq: schedutil: Always process remote callback with slow switching 2017-08-18 01:35:19 +02:00
lib
mm
net
samples
scripts Properly alphabetize MAINTAINERS file 2017-07-23 16:06:21 -07:00
security
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usr
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.get_maintainer.ignore
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MAINTAINERS Properly alphabetize MAINTAINERS file 2017-07-23 16:06:21 -07:00
Makefile Linux 4.13-rc2 2017-07-23 16:15:17 -07:00
README

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

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

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.