Ejemplos de __register_hotcpu_notifier en C++ (Cpp)

Ejemplo n.º 1

Archivo: msr_entry.c Proyecto: SLURM-RJMS-RESEARCH/msr-safe

static int __init msr_init(void)
{
	int i = 0;
	int err = 0;

	err = msrbatch_init();
	if (err != 0) {
		pr_err("failed to initialize msrbatch\n");
		goto out;
	}
	err = msr_whitelist_init();
	if (err != 0) {
		pr_err("failed to initialize whitelist for msr\n");
		goto out_batch;
	}
	if (__register_chrdev(MSR_MAJOR, 0, num_possible_cpus(),
					"cpu/msr", &msr_fops)) {
		pr_err("unable to get major %d for msr\n", MSR_MAJOR);
		err = -EBUSY;
		goto out_wlist;
	}
	msr_class = class_create(THIS_MODULE, "msr");
	if (IS_ERR(msr_class)) {
		err = PTR_ERR(msr_class);
		goto out_chrdev;
	}
	msr_class->devnode = msr_devnode;

	cpu_notifier_register_begin();
	for_each_online_cpu(i) {
		err = msr_device_create(i);
		if (err != 0)
			goto out_class;
	}
	__register_hotcpu_notifier(&msr_class_cpu_notifier);
	cpu_notifier_register_done();

	err = 0;
	goto out;

out_class:
	i = 0;
	for_each_online_cpu(i)
		msr_device_destroy(i);
	cpu_notifier_register_done();
	class_destroy(msr_class);
out_chrdev:
	__unregister_chrdev(MSR_MAJOR, 0, num_possible_cpus(), "cpu/msr");
out_wlist:
	msr_whitelist_cleanup();
out_batch:
	msrbatch_cleanup();
out:
	return err;
}

Ejemplo n.º 2

Archivo: cpuid.c Proyecto: 0x000000FF/edison-linux

static int __init cpuid_init(void)
{
	int i, err = 0;
	i = 0;

	if (__register_chrdev(CPUID_MAJOR, 0, NR_CPUS,
			      "cpu/cpuid", &cpuid_fops)) {
		printk(KERN_ERR "cpuid: unable to get major %d for cpuid\n",
		       CPUID_MAJOR);
		err = -EBUSY;
		goto out;
	}
	cpuid_class = class_create(THIS_MODULE, "cpuid");
	if (IS_ERR(cpuid_class)) {
		err = PTR_ERR(cpuid_class);
		goto out_chrdev;
	}
	cpuid_class->devnode = cpuid_devnode;

	cpu_notifier_register_begin();
	for_each_online_cpu(i) {
		err = cpuid_device_create(i);
		if (err != 0)
			goto out_class;
	}
	__register_hotcpu_notifier(&cpuid_class_cpu_notifier);
	cpu_notifier_register_done();

	err = 0;
	goto out;

out_class:
	i = 0;
	for_each_online_cpu(i) {
		cpuid_device_destroy(i);
	}
	cpu_notifier_register_done();
	class_destroy(cpuid_class);
out_chrdev:
	__unregister_chrdev(CPUID_MAJOR, 0, NR_CPUS, "cpu/cpuid");
out:
	return err;
}

Ejemplo n.º 3

Archivo: msr.c Proyecto: 0-T-0/ps4-linux

static int __init msr_init(void)
{
	int i, err = 0;
	i = 0;

	if (__register_chrdev(MSR_MAJOR, 0, NR_CPUS, "cpu/msr", &msr_fops)) {
		pr_err("unable to get major %d for msr\n", MSR_MAJOR);
		err = -EBUSY;
		goto out;
	}
	msr_class = class_create(THIS_MODULE, "msr");
	if (IS_ERR(msr_class)) {
		err = PTR_ERR(msr_class);
		goto out_chrdev;
	}
	msr_class->devnode = msr_devnode;

	cpu_notifier_register_begin();
	for_each_online_cpu(i) {
		err = msr_device_create(i);
		if (err != 0)
			goto out_class;
	}
	__register_hotcpu_notifier(&msr_class_cpu_notifier);
	cpu_notifier_register_done();

	err = 0;
	goto out;

out_class:
	i = 0;
	for_each_online_cpu(i)
		msr_device_destroy(i);
	cpu_notifier_register_done();
	class_destroy(msr_class);
out_chrdev:
	__unregister_chrdev(MSR_MAJOR, 0, NR_CPUS, "cpu/msr");
out:
	return err;
}