cpuidle: governors: teo: Decay metrics below DECAY_SHIFT threshold

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If a given governor metric falls below a certain value (8 for
DECAY_SHIFT equal to 3), it will not decay any more due to the
simplistic decay implementation.  This may in some cases lead to
subtle inconsistencies in the governor behavior, so change the
decay implementation to take it into account and set the metric
at hand to 0 in that case.

Suggested-by: Christian Loehle <christian.loehle@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Christian Loehle <christian.loehle@arm.com>
Tested-by: Christian Loehle <christian.loehle@arm.com>
Link: https://patch.msgid.link/2819353.mvXUDI8C0e@rafael.j.wysocki

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Rafael J. Wysocki 2025-11-12 19:03:08 +01:00

parent 8f3f01082d

commit b54df61c74

1 changed files with 19 additions and 7 deletions

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drivers/cpuidle/governors/teo.c

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