diff options
Diffstat (limited to 'kernel/sched/cpudeadline.c')
| -rw-r--r-- | kernel/sched/cpudeadline.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/kernel/sched/cpudeadline.c b/kernel/sched/cpudeadline.c index 8630f2a40a3f..8cb06c8c7eb1 100644 --- a/kernel/sched/cpudeadline.c +++ b/kernel/sched/cpudeadline.c @@ -121,19 +121,31 @@ int cpudl_find(struct cpudl *cp, struct task_struct *p, if (later_mask && cpumask_and(later_mask, cp->free_cpus, p->cpus_ptr)) { - int cpu; + unsigned long cap, max_cap = 0; + int cpu, max_cpu = -1; if (!static_branch_unlikely(&sched_asym_cpucapacity)) return 1; /* Ensure the capacity of the CPUs fits the task. */ for_each_cpu(cpu, later_mask) { - if (!dl_task_fits_capacity(p, cpu)) + if (!dl_task_fits_capacity(p, cpu)) { cpumask_clear_cpu(cpu, later_mask); + + cap = capacity_orig_of(cpu); + + if (cap > max_cap || + (cpu == task_cpu(p) && cap == max_cap)) { + max_cap = cap; + max_cpu = cpu; + } + } } - if (!cpumask_empty(later_mask)) - return 1; + if (cpumask_empty(later_mask)) + cpumask_set_cpu(max_cpu, later_mask); + + return 1; } else { int best_cpu = cpudl_maximum(cp); |