diff options
Diffstat (limited to 'kernel/sched/fair.c')
| -rw-r--r-- | kernel/sched/fair.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index a90a63807cf..d7303c5fd1e 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -3598,6 +3598,8 @@ unsigned int hmp_next_down_threshold = 4096; static unsigned int hmp_up_migration(int cpu, struct sched_entity *se); static unsigned int hmp_down_migration(int cpu, struct sched_entity *se); +static inline unsigned int hmp_domain_min_load(struct hmp_domain *hmpd, + int *min_cpu); /* Check if cpu is in fastest hmp_domain */ static inline unsigned int hmp_cpu_is_fastest(int cpu) @@ -3642,7 +3644,16 @@ static inline struct hmp_domain *hmp_faster_domain(int cpu) static inline unsigned int hmp_select_faster_cpu(struct task_struct *tsk, int cpu) { - return cpumask_any_and(&hmp_faster_domain(cpu)->cpus, + int lowest_cpu=NR_CPUS; + __always_unused int lowest_ratio = hmp_domain_min_load(hmp_faster_domain(cpu), &lowest_cpu); + /* + * If the lowest-loaded CPU in the domain is allowed by the task affinity + * select that one, otherwise select one which is allowed + */ + if(lowest_cpu != NR_CPUS && cpumask_test_cpu(lowest_cpu,tsk_cpus_allowed(tsk))) + return lowest_cpu; + else + return cpumask_any_and(&hmp_faster_domain(cpu)->cpus, tsk_cpus_allowed(tsk)); } @@ -3653,7 +3664,16 @@ static inline unsigned int hmp_select_faster_cpu(struct task_struct *tsk, static inline unsigned int hmp_select_slower_cpu(struct task_struct *tsk, int cpu) { - return cpumask_any_and(&hmp_slower_domain(cpu)->cpus, + int lowest_cpu=NR_CPUS; + __always_unused int lowest_ratio = hmp_domain_min_load(hmp_slower_domain(cpu), &lowest_cpu); + /* + * If the lowest-loaded CPU in the domain is allowed by the task affinity + * select that one, otherwise select one which is allowed + */ + if(lowest_cpu != NR_CPUS && cpumask_test_cpu(lowest_cpu,tsk_cpus_allowed(tsk))) + return lowest_cpu; + else + return cpumask_any_and(&hmp_slower_domain(cpu)->cpus, tsk_cpus_allowed(tsk)); } |