[Bug 111241] New: one need root credentials to read cpuinfo_cur_freq content

[Bug 111241] New: one need root credentials to read cpuinfo_cur_freq content

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=111241

            Bug ID: 111241
           Summary: one need root credentials to read cpuinfo_cur_freq
                    content
           Product: Power Management
           Version: 2.5
    Kernel Version: 4.4.0-994-generic
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: cpufreq
          Assignee: linux-pm@vger.kernel.org
          Reporter: flux242@gmail.com
        Regression: No

could somebody explain why do I need root credentials to read cpuinfo_cur_freq
file? Why other files in the same directory have 444 and not 400 as the
cpuinfo_cur_freq? What so special about the current cpu freq readings?  

$ lso /sys/devices/system/cpu/cpu?/cpufreq/cpuinfo*
 400 -r-------- 1 root 4.0K Jan 24 09:30
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq
 444 -r--r--r-- 1 root 4.0K Jan 24 09:37
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
 444 -r--r--r-- 1 root 4.0K Jan 24 09:37
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq
 444 -r--r--r-- 1 root 4.0K Jan 24 09:37
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_transition_latency
 400 -r-------- 1 root 4.0K Jan 24 09:53
/sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_cur_freq
 444 -r--r--r-- 1 root 4.0K Jan 24 09:53
/sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_max_freq
 444 -r--r--r-- 1 root 4.0K Jan 24 09:53
/sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_min_freq
 444 -r--r--r-- 1 root 4.0K Jan 24 09:53
/sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_transition_latency

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[Bug 111241] one need root credentials to read cpuinfo_cur_freq content

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=111241

Doug Smythies <dsmythies@telus.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dsmythies@telus.net

--- Comment #1 from Doug Smythies <dsmythies@telus.net> ---
This one is a duplicate of bug 65611, and the rational is partially therein and
particularly in the links within comment 6.

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[Bug 111241] one need root credentials to read cpuinfo_cur_freq content

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=111241

--- Comment #2 from flux242@gmail.com ---
well, the problem is 12 years people are still confused why it is this way.
Which makes me to believe that something is wrong with the design. Anyway, as
far as I can read from scaling_cur_freq I'm fine.

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[Bug 111241] one need root credentials to read cpuinfo_cur_freq content

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=111241

flux242@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

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[Bug 111241] one need root credentials to read cpuinfo_cur_freq content

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=111241

Len Brown <lenb@kernel.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED
                 CC|                            |lenb@kernel.org
         Resolution|INVALID                     |DUPLICATE

--- Comment #3 from Len Brown <lenb@kernel.org> ---


*** This bug has been marked as a duplicate of bug 65611 ***

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