diff options
| -rw-r--r-- | kernel/sched/core_ctl.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/kernel/sched/core_ctl.c b/kernel/sched/core_ctl.c index 0b5f2dea18a1..5d5fd22a8cdd 100644 --- a/kernel/sched/core_ctl.c +++ b/kernel/sched/core_ctl.c @@ -44,6 +44,7 @@ struct cluster_data { bool pending; spinlock_t pending_lock; bool is_big_cluster; + bool enable; int nrrun; bool nrrun_changed; struct task_struct *core_ctl_thread; @@ -244,6 +245,29 @@ static ssize_t show_is_big_cluster(const struct cluster_data *state, char *buf) return snprintf(buf, PAGE_SIZE, "%u\n", state->is_big_cluster); } +static ssize_t store_enable(struct cluster_data *state, + const char *buf, size_t count) +{ + unsigned int val; + bool bval; + + if (sscanf(buf, "%u\n", &val) != 1) + return -EINVAL; + + bval = !!val; + if (bval != state->enable) { + state->enable = bval; + apply_need(state); + } + + return count; +} + +static ssize_t show_enable(const struct cluster_data *state, char *buf) +{ + return scnprintf(buf, PAGE_SIZE, "%u\n", state->enable); +} + static ssize_t show_need_cpus(const struct cluster_data *state, char *buf) { return snprintf(buf, PAGE_SIZE, "%u\n", state->need_cpus); @@ -372,6 +396,7 @@ core_ctl_attr_ro(need_cpus); core_ctl_attr_ro(active_cpus); core_ctl_attr_ro(global_state); core_ctl_attr_rw(not_preferred); +core_ctl_attr_rw(enable); static struct attribute *default_attrs[] = { &min_cpus.attr, @@ -381,6 +406,7 @@ static struct attribute *default_attrs[] = { &busy_down_thres.attr, &task_thres.attr, &is_big_cluster.attr, + &enable.attr, &need_cpus.attr, &active_cpus.attr, &global_state.attr, @@ -549,7 +575,7 @@ static bool eval_need(struct cluster_data *cluster) spin_lock_irqsave(&state_lock, flags); - if (cluster->boost) { + if (cluster->boost || !cluster->enable) { need_cpus = cluster->max_cpus; } else { cluster->active_cpus = get_active_cpu_count(cluster); @@ -1046,6 +1072,7 @@ static int cluster_init(const struct cpumask *mask) cluster->offline_delay_ms = 100; cluster->task_thres = UINT_MAX; cluster->nrrun = cluster->num_cpus; + cluster->enable = true; INIT_LIST_HEAD(&cluster->lru); spin_lock_init(&cluster->pending_lock); |