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Filename Latest commit message Latest commit date
Rafael J. Wysocki f42407a790 cpuidle: teo: Avoid using "early hits" incorrectly
[ Upstream commit 63f202e5edf161c2ccffa286a9a701e995427b15 ]

If the current state with the maximum "early hits" metric in
teo_select() is also the one "matching" the expected idle duration,
it will be used as the candidate one for selection even if its
"misses" metric is greater than its "hits" metric, which is not
correct.

In that case, the candidate state should be shallower than the
current one and its "early hits" metric should be the maximum
among the idle states shallower than the current one.

To make that happen, modify teo_select() to save the index of
the state whose "early hits" metric is the maximum for the
range of states below the current one and go back to that state
if it turns out that the current one should be rejected.

Fixes: 159e48560f51 ("cpuidle: teo: Fix "early hits" handling for disabled idle states")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-02-05 21:22:52 +00:00
arch powerpc/fsl/dts: add fsl,erratum-a011043 2020-02-05 21:22:51 +00:00
block
certs
crypto crypto: pcrypt - Fix user-after-free on module unload 2020-02-01 09:34:52 +00:00
Documentation PM / devfreq: Add new name attribute for sysfs 2020-02-05 21:22:40 +00:00
drivers cpuidle: teo: Avoid using "early hits" incorrectly 2020-02-05 21:22:52 +00:00
fs btrfs: do not zero f_bavail if we have available space 2020-02-05 21:22:52 +00:00
include cfg80211: Fix radar event during another phy CAC 2020-02-05 21:22:46 +00:00
init Revert "um: Enable CONFIG_CONSTRUCTORS" 2020-02-01 09:34:53 +00:00
ipc
kernel cgroup: Prevent double killing of css when enabling threaded cgroup 2020-02-05 21:22:42 +00:00
lib XArray: Fix xas_pause at ULONG_MAX 2020-02-05 21:22:47 +00:00
LICENSES
mm mm/mempolicy.c: fix out of bounds write in mpol_parse_str() 2020-02-05 21:22:40 +00:00
net net: Fix skb->csum update in inet_proto_csum_replace16(). 2020-02-05 21:22:52 +00:00
samples
scripts
security tomoyo: Use atomic_t for statistics counter 2020-02-05 21:22:41 +00:00
sound ASoC: sti: fix possible sleep-in-atomic 2020-02-05 21:22:46 +00:00
tools tools lib traceevent: Fix memory leakage in filter_event 2020-02-05 21:22:43 +00:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
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COPYING
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Makefile Linux 5.4.17 2020-02-01 09:34:53 +00:00
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.