From c4a6287185179732dfc1e903c195ff90c19f1065 Mon Sep 17 00:00:00 2001 From: Frode Isaksen Date: Tue, 19 Dec 2017 11:15:35 +0000 Subject: This layer provides Energy Aware Scheduling (EAS) patches For the moment only for Renesas R-Car Gen3 SoC's. Can be expanded for other SoC's by setting the machine feature biglittle and provide the relevant EAS patches. Bug-AGL: SPEC-813 Change-Id: I2b5e69c515c33e57be19b30466fe208d7b8ac1a5 Signed-off-by: Frode Isaksen --- ...-fair-Don-t-load-balance-from-group_other.patch | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 meta-eas/recipes-kernel/linux/linux-renesas/0081-SPLIT-sched-fair-Don-t-load-balance-from-group_other.patch (limited to 'meta-eas/recipes-kernel/linux/linux-renesas/0081-SPLIT-sched-fair-Don-t-load-balance-from-group_other.patch') diff --git a/meta-eas/recipes-kernel/linux/linux-renesas/0081-SPLIT-sched-fair-Don-t-load-balance-from-group_other.patch b/meta-eas/recipes-kernel/linux/linux-renesas/0081-SPLIT-sched-fair-Don-t-load-balance-from-group_other.patch new file mode 100644 index 0000000..1258e93 --- /dev/null +++ b/meta-eas/recipes-kernel/linux/linux-renesas/0081-SPLIT-sched-fair-Don-t-load-balance-from-group_other.patch @@ -0,0 +1,38 @@ +From 28e38963fbe539c9804d9132aa3613ead32ee330 Mon Sep 17 00:00:00 2001 +From: Brendan Jackman +Date: Wed, 15 Feb 2017 17:17:26 +0000 +Subject: [PATCH 81/92] SPLIT: sched/fair: Don't load balance from group_other + to groups without spare capacity + +This is split out from 885677858fd "sched: Consider misfit tasks when +load-balancing" from lsk-4.4-armlt. The rest of that patch will follow, this is +separated for ease of examination and discussion. + +(cherry picked from commit a3e504284acbf3dd12ceec8ebcabaee1892f876e) +Signed-off-by: Gaku Inami +--- + kernel/sched/fair.c | 8 ++++++++ + 1 file changed, 8 insertions(+) + +diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c +index fea3ca8..cf60d93 100644 +--- a/kernel/sched/fair.c ++++ b/kernel/sched/fair.c +@@ -7750,6 +7750,14 @@ static bool update_sd_pick_busiest(struct lb_env *env, + if (sgs->group_type < busiest->group_type) + return false; + ++ /* ++ * Candidate sg doesn't face any serious load-balance problems ++ * so don't pick it if the local sg is already filled up. ++ */ ++ if (sgs->group_type == group_other && ++ !group_has_capacity(env, &sds->local_stat)) ++ return false; ++ + if (sgs->avg_load <= busiest->avg_load) + return false; + +-- +1.9.1 + -- cgit 1.2.3-korg