>From 68483b7a891a04be8a7df6db2c63f7ba82f794b1 Mon Sep 17 00:00:00 2001 From: Patrick Bellasi Date: Mon, 27 Jun 2016 19:45:24 +0100 Subject: [PATCH 3/3] sched/tune: update PC and PB cuts definition The current definition of Performance Boost (PB) and Performance Constraint (PC) cuts defines two "dead regions": - up to 20% boost: we are in energy-reduction only mode, i.e. accept all candidate which reduce energy - over 70% boost: we are in performance-increase only mode, i.e. accept only sched candidate which do not reduce performances This patch uses a more fine grained configuration where these two "dead regions" are reduced to: up to 10% and over 90%. This should allow to have some boosting benefits starting from 10% boost values as well as not being to much permissive starting from boost values of 80%. Suggested-by: Leo Yan Signed-off-by: Patrick Bellasi --- kernel/sched/tune.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/kernel/sched/tune.c b/kernel/sched/tune.c index e3ae8de..2e28252 100644 --- a/kernel/sched/tune.c +++ b/kernel/sched/tune.c @@ -38,16 +38,16 @@ struct threshold_params { */ static struct threshold_params threshold_gains[] = { - { 0, 4 }, /* >= 0% */ - { 0, 4 }, /* >= 10% */ - { 1, 4 }, /* >= 20% */ - { 2, 4 }, /* >= 30% */ - { 3, 4 }, /* >= 40% */ - { 4, 3 }, /* >= 50% */ - { 4, 2 }, /* >= 60% */ - { 4, 1 }, /* >= 70% */ - { 4, 0 }, /* >= 80% */ - { 4, 0 } /* >= 90% */ + { 0, 5 }, /* < 10% */ + { 1, 5 }, /* < 20% */ + { 2, 5 }, /* < 30% */ + { 3, 5 }, /* < 40% */ + { 4, 5 }, /* < 50% */ + { 5, 4 }, /* < 60% */ + { 5, 3 }, /* < 70% */ + { 5, 2 }, /* < 80% */ + { 5, 1 }, /* < 90% */ + { 5, 0 } /* <= 100% */ }; static int -- 2.5.0