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From: bugzilla-daemon@bugzilla.kernel.org
To: linux-pm@vger.kernel.org
Subject: [Bug 211791] New: AMD CPU /proc/cpuinfo reported max potential boost frequency instead of actual operating frequency
Date: Tue, 16 Feb 2021 01:41:11 +0000	[thread overview]
Message-ID: <bug-211791-137361@https.bugzilla.kernel.org/> (raw)

https://bugzilla.kernel.org/show_bug.cgi?id=211791

            Bug ID: 211791
           Summary: AMD CPU /proc/cpuinfo reported max potential boost
                    frequency instead of actual operating frequency
           Product: Power Management
           Version: 2.5
    Kernel Version: 5.11.0
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: cpufreq
          Assignee: linux-pm@vger.kernel.org
          Reporter: me@rin.cat
        Regression: No

Created attachment 295305
  --> https://bugzilla.kernel.org/attachment.cgi?id=295305&action=edit
/proc/cpuinfo log

Overview:
    The /proc/cpuinfo reported wrong operating frequency, where my AMD 3900X
shows over 6 GHz when idle.
    This may be caused by the 5.11 AMD CPU frequency / CPPC fix.

Steps to Reproduce: 
    cat /proc/cpuinfo
    or
    lscpu

Actual Results:
    Reported operating frequency far beyond actual. (Over 6 GHz)

Expected Results:
    Reported actual operating frequency.

Build Date & Hardware:
    Build 2021-02-15 on Gentoo
    CPU: AMD Ryzen 9 3900X 12-Core Processor
    AMD AGESA: ComboAM4PIV2 1.2.0.0
    CPPC: enabled

Additional Information:
    /sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq reported correct
frequency.

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             reply	other threads:[~2021-02-16  1:42 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-16  1:41 bugzilla-daemon [this message]
2021-02-16  1:41 ` [Bug 211791] AMD CPU /proc/cpuinfo reported max potential boost frequency instead of actual operating frequency bugzilla-daemon
2021-03-13 10:41 ` bugzilla-daemon
2021-04-20  8:55 ` bugzilla-daemon
2021-04-20 10:20   ` Huang Rui
2021-04-20 10:20 ` bugzilla-daemon
2021-04-30 18:22 ` bugzilla-daemon
2021-05-14  2:27 ` bugzilla-daemon
2022-05-06 19:10 ` bugzilla-daemon

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