Merge "core_ctl: Add sysfs node to disable core_ctl" into msm-4.9 (970c3642) · Commits · e / devices / android_kernel_fairphone_FP3

kernel/sched/core_ctl.c

+28 −1

Original line number	Diff line number	Diff line
		@@ -44,6 +44,7 @@ struct cluster_data {
		bool pending;
		spinlock_t pending_lock;
		bool is_big_cluster;
		bool enable;
		int nrrun;
		struct task_struct *core_ctl_thread;
		unsigned int first_cpu;
		@@ -247,6 +248,29 @@ 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);
		@@ -377,6 +401,7 @@ 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,
		@@ -386,6 +411,7 @@ 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,
		@@ -529,7 +555,7 @@ 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);
		@@ -1020,6 +1046,7 @@ 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);