diff options
| author |   Frode Isaksen <fisaksen@baylibre.com> | 2017-12-19 11:15:35 +0000 |
|---|---|---|
| committer |   Jan-Simon Moeller <jsmoeller@linuxfoundation.org> | 2018-02-07 11:47:29 +0000 |
| commit | c4a6287185179732dfc1e903c195ff90c19f1065 (patch) | |
| tree | d35f5010dbd952e40f5c178322026445b55757c1 /meta-eas/recipes-kernel/linux/linux-renesas/0061-sched-fair-Fix-select_task_rq_brute-rcu_unlock-when-.patch | |
| parent | 109dea1d5c5a38807b098b588584636ae636a302 (diff) | |
This layer provides Energy Aware Scheduling (EAS) patcheseel_5.1.0eel_5.0.3eel_5.0.2eel/5.1.0eel/5.0.3eel/5.0.25.1.05.0.35.0.2eel
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 <fisaksen@baylibre.com>
Diffstat (limited to 'meta-eas/recipes-kernel/linux/linux-renesas/0061-sched-fair-Fix-select_task_rq_brute-rcu_unlock-when-.patch')
| -rw-r--r-- | meta-eas/recipes-kernel/linux/linux-renesas/0061-sched-fair-Fix-select_task_rq_brute-rcu_unlock-when-.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/meta-eas/recipes-kernel/linux/linux-renesas/0061-sched-fair-Fix-select_task_rq_brute-rcu_unlock-when-.patch b/meta-eas/recipes-kernel/linux/linux-renesas/0061-sched-fair-Fix-select_task_rq_brute-rcu_unlock-when-.patch new file mode 100644 index 0000000..4756f31 --- /dev/null +++ b/meta-eas/recipes-kernel/linux/linux-renesas/0061-sched-fair-Fix-select_task_rq_brute-rcu_unlock-when-.patch @@ -0,0 +1,38 @@ +From f4e82adc562197bc0c6411d9db0ad4497bb689a5 Mon Sep 17 00:00:00 2001 +From: Morten Rasmussen <morten.rasmussen@arm.com> +Date: Thu, 14 Apr 2016 08:39:45 +0100 +Subject: [PATCH 61/92] sched/fair: Fix select_task_rq_brute rcu_unlock when + !sd + +To be merged with original patch + +(cherry picked from commit 149b57aaecf04f0e14a2d0cef807f0c499c6d6ba) +Signed-off-by: Gaku Inami <gaku.inami.xw@bp.renesas.com> +--- + kernel/sched/fair.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c +index 58b468c..3c193f5 100644 +--- a/kernel/sched/fair.c ++++ b/kernel/sched/fair.c +@@ -6160,7 +6160,7 @@ static int select_energy_cpu_brute(struct task_struct *p, int prev_cpu) + sd = rcu_dereference(per_cpu(sd_ea, prev_cpu)); + + if (!sd) +- return prev_cpu; ++ goto unlock; + + for_each_cpu_and(i, tsk_cpus_allowed(p), sched_domain_span(sd)) { + int diff; +@@ -6193,6 +6193,7 @@ static int select_energy_cpu_brute(struct task_struct *p, int prev_cpu) + } + } + ++unlock: + rcu_read_unlock(); + + if (energy_cpu == prev_cpu && !cpu_overutilized(prev_cpu)) +-- +1.9.1 + |