diff options
| -rw-r--r-- | kernel/sched/fair.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 2973173ad850..4ce949bb0213 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -7703,11 +7703,10 @@ static int find_energy_efficient_cpu(struct task_struct *p, int prev_cpu) for (; pd; pd = pd->next) { unsigned long util_min = p_util_min, util_max = p_util_max; unsigned long cpu_cap, cpu_thermal_cap, util; - unsigned long cur_delta, max_spare_cap = 0; + long prev_spare_cap = -1, max_spare_cap = -1; unsigned long rq_util_min, rq_util_max; - unsigned long prev_spare_cap = 0; + unsigned long cur_delta, base_energy; int max_spare_cap_cpu = -1; - unsigned long base_energy; int fits, max_fits = -1; cpumask_and(cpus, perf_domain_span(pd), cpu_online_mask); @@ -7770,7 +7769,7 @@ static int find_energy_efficient_cpu(struct task_struct *p, int prev_cpu) prev_spare_cap = cpu_cap; prev_fits = fits; } else if ((fits > max_fits) || - ((fits == max_fits) && (cpu_cap > max_spare_cap))) { + ((fits == max_fits) && ((long)cpu_cap > max_spare_cap))) { /* * Find the CPU with the maximum spare capacity * among the remaining CPUs in the performance @@ -7782,7 +7781,7 @@ static int find_energy_efficient_cpu(struct task_struct *p, int prev_cpu) } } - if (max_spare_cap_cpu < 0 && prev_spare_cap == 0) + if (max_spare_cap_cpu < 0 && prev_spare_cap < 0) continue; eenv_pd_busy_time(&eenv, cpus, p); @@ -7790,7 +7789,7 @@ static int find_energy_efficient_cpu(struct task_struct *p, int prev_cpu) base_energy = compute_energy(&eenv, pd, cpus, p, -1); /* Evaluate the energy impact of using prev_cpu. */ - if (prev_spare_cap > 0) { + if (prev_spare_cap > -1) { prev_delta = compute_energy(&eenv, pd, cpus, p, prev_cpu); /* CPU utilization has changed */ |