Merge "PM / EM: Fix debugfs entry creation" (c0674405) · Commits · e / devices / android_kernel_fairphone_FP5

kernel/power/energy_model.c

+30 −0

Original line number	Diff line number	Diff line
		@@ -55,6 +55,11 @@ static void em_debug_create_pd(struct em_perf_domain *pd, int cpu)
		char name[8];
		int i;

		if (!rootdir) {
		pr_err("Power domains created prior to em_debug_init\n");
		return;
		}

		snprintf(name, sizeof(name), "pd%d", cpu);

		/* Create the directory of the performance domain */
		@@ -69,9 +74,34 @@ static void em_debug_create_pd(struct em_perf_domain *pd, int cpu)

		static int __init em_debug_init(void)
		{
		int cpu;
		struct em_perf_domain *pd;
		cpumask_t span;

		cpumask_copy(&span, cpu_possible_mask);

		/* Create /sys/kernel/debug/energy_model directory */
		rootdir = debugfs_create_dir("energy_model", NULL);

		for_each_cpu(cpu, &span) {
		char name[8];

		pd = em_cpu_get(cpu);
		if (!pd) {
		pr_info("Power domains not created yet\n");
		break;
		}

		snprintf(name, sizeof(name), "pd%d", cpu);
		if (debugfs_lookup(name, rootdir)) {
		pr_info("Power domains already created\n");
		break;
		}

		em_debug_create_pd(pd, cpu);
		cpumask_andnot(&span, &span, to_cpumask(pd->cpus));
		}

		return 0;
		}
		fs_initcall(em_debug_init);