FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2024-12-25 02:48:21 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Documentation: intel_pstate: PID tuning is not always available

Browse Source 
PID tuning is not available when the get_target_pstate_use_cpu_load()
is used to calculate target_state. So update the documentation.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Srinivas Pandruvada 2016-10-20 13:37:06 -07:00 committed by Rafael J. Wysocki
parent 185d82456e
commit b8b97a4252
1 changed files with 5 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
Documentation/cpu-freq/intel-pstate.txt
View File

@ -122,11 +122,12 @@ will run at is selected by the processor itself.
Tuning Intel P-State driver
When HWP mode is not used, debugfs files have also been added to allow the
tuning of the internal governor algorithm. These files are located at
/sys/kernel/debug/pstate_snb/. The algorithm uses a PID (Proportional
Integral Derivative) controller. The PID tunable parameters are:
When the performance can be tuned using PID (Proportional Integral
Derivative) controller, debugfs files are provided for adjusting performance.
They are presented under:
/sys/kernel/debug/pstate_snb/
The PID tunable parameters are:
deadband
d_gain_pct
i_gain_pct