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New: CPU frequencies in /proc/cpuinfo aren't dynamically updated

Bug 177161 [email protected] 1 participant 4 messages Oct 10, 2016 – Oct 11, 2016

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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: [email protected]
          Reporter: [email protected]
        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

In reply to [email protected]

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

Len Brown <[email protected]> changed:

What |Removed |Added
----------------------------------------------------------------------------

                 CC|                            |[email protected]
           Assignee|[email protected]    |[email protected]

--- Comment #3 from Len Brown <[email protected]> ---
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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