intel_pstate: Correct rounding in busy calculation

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commit f0fe3cd7e1 upstream.

Changing to fixed point math throughout the busy calculation in
commit e66c1768 (Change busy calculation to use fixed point
math.) Introduced some inaccuracies by rounding the busy value at two
points in the calculation.  This change removes roundings and moves
the rounding to the output of the PID where the calculations are
complete and the value returned as an integer.

Fixes: e66c176837 (intel_pstate: Change busy calculation to use fixed point math.)
Reported-by: Doug Smythies <dsmythies@telus.net>
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Dirk Brandewie 2014-05-29 09:32:23 -07:00 • committed by Greg Kroah-Hartman

parent cba64e6cbf

commit 85db860435

1 changed files with 7 additions and 5 deletions

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drivers/cpufreq/intel_pstate.c

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