diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-06-29 01:49:44 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-06-29 23:26:15 +0200 |
| commit | 8183003e48cbb9d6d276b6330eb5edecf95830f3 (patch) | |
| tree | b7e2289a4a019ea40bb0efd8b99635f763056a0e /Documentation | |
| parent | fab24dcc395637557a7988a867e7b3a5823917a9 (diff) | |
cpufreq: Update scaling_cur_freq documentation
Commit f8475cef9008 "x86: use common aperfmperf_khz_on_cpu() to
calculate KHz using APERF/MPERF" modified the way the scaling_cur_freq
cpufreq policy attribute in sysfs is handled on contemporary
Intel-based x86 systems, so update the documentation to reflect
that change.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/pm/cpufreq.rst | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/Documentation/admin-guide/pm/cpufreq.rst b/Documentation/admin-guide/pm/cpufreq.rst index 09aa2e949787..463cf7e73db8 100644 --- a/Documentation/admin-guide/pm/cpufreq.rst +++ b/Documentation/admin-guide/pm/cpufreq.rst @@ -269,16 +269,16 @@ are the following: ``scaling_cur_freq`` Current frequency of all of the CPUs belonging to this policy (in kHz). - For the majority of scaling drivers, this is the frequency of the last - P-state requested by the driver from the hardware using the scaling + In the majority of cases, this is the frequency of the last P-state + requested by the scaling driver from the hardware using the scaling interface provided by it, which may or may not reflect the frequency the CPU is actually running at (due to hardware design and other limitations). - Some scaling drivers (e.g. |intel_pstate|) attempt to provide - information more precisely reflecting the current CPU frequency through - this attribute, but that still may not be the exact current CPU - frequency as seen by the hardware at the moment. + Some architectures (e.g. ``x86``) may attempt to provide information + more precisely reflecting the current CPU frequency through this + attribute, but that still may not be the exact current CPU frequency as + seen by the hardware at the moment. ``scaling_driver`` The scaling driver currently in use. |