[Bug 177161] New: CPU frequencies in /proc/cpuinfo aren't dynamically updated

[Bug 177161] New: CPU frequencies in /proc/cpuinfo aren't dynamically updated

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=177161

            Bug ID: 177161
           Summary: CPU frequencies in /proc/cpuinfo aren't dynamically
                    updated
           Product: Power Management
           Version: 2.5
    Kernel Version: >=4.8
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: cpufreq
          Assignee: linux-pm@vger.kernel.org
          Reporter: itumaykin+kernel@gmail.com
        Regression: Yes

Created attachment 241281
  --> https://bugzilla.kernel.org/attachment.cgi?id=241281&action=edit
lspci -nn -k -vvv

Hello.

Since 4.8 frequencies in /proc/cpuinfo aren't dynamically updated anymore.
I guess they are stuck to the values written during boot as I get different
values from boot to boot.

This wasn't the case with 4.7.x or any previous kernel series.

Please fix.

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[Bug 177161] CPU frequencies in /proc/cpuinfo aren't dynamically updated

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=177161

--- Comment #1 from Coacher <itumaykin+kernel@gmail.com> ---
Created attachment 241291
  --> https://bugzilla.kernel.org/attachment.cgi?id=241291&action=edit
lscpu

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[Bug 177161] CPU frequencies in /proc/cpuinfo aren't dynamically updated

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=177161

--- Comment #2 from Coacher <itumaykin+kernel@gmail.com> ---
Created attachment 241301
  --> https://bugzilla.kernel.org/attachment.cgi?id=241301&action=edit
config-4.8

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[Bug 177161] CPU frequencies in /proc/cpuinfo aren't dynamically updated

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=177161

Len Brown <lenb@kernel.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |lenb@kernel.org
           Assignee|linux-pm@vger.kernel.org    |lenb@kernel.org

--- Comment #3 from Len Brown <lenb@kernel.org> ---
I proposed a patch to make /proc/cpuinfo accurate several months ago.
Red Hat didn't like it, arguing that changing values is a support issue.
So there was not agreement on what to do here -- let's go find out if
it changed by mistake...

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