[SPARC64]: Export basic cpu properties via sysfs.

static DEFINE_PER_CPU(struct cpu, cpu_devices);

#define SHOW_ULONG_NAME(NAME, MEMBER) \

static ssize_t show_##NAME(struct sys_device *dev, char *buf) \

{ \

	struct cpu *cpu = container_of(dev, struct cpu, sysdev); \

	cpuinfo_sparc *c = &cpu_data(cpu->sysdev.id); \

	return sprintf(buf, "%lu\n", c->MEMBER); \

}

#define SHOW_UINT_NAME(NAME, MEMBER) \

static ssize_t show_##NAME(struct sys_device *dev, char *buf) \

{ \

	struct cpu *cpu = container_of(dev, struct cpu, sysdev); \

	cpuinfo_sparc *c = &cpu_data(cpu->sysdev.id); \

	return sprintf(buf, "%u\n", c->MEMBER); \

}

SHOW_ULONG_NAME(clock_tick, clock_tick);

SHOW_ULONG_NAME(udelay_val, udelay_val);

SHOW_UINT_NAME(l1_dcache_size, dcache_size);

SHOW_UINT_NAME(l1_dcache_line_size, dcache_line_size);

SHOW_UINT_NAME(l1_icache_size, icache_size);

SHOW_UINT_NAME(l1_icache_line_size, icache_line_size);

SHOW_UINT_NAME(l2_cache_size, ecache_size);

SHOW_UINT_NAME(l2_cache_line_size, ecache_line_size);

static struct sysdev_attribute cpu_core_attrs[] = {

	_SYSDEV_ATTR(clock_tick,          0444, show_clock_tick, NULL),

	_SYSDEV_ATTR(udelay_val,          0444, show_udelay_val, NULL),

	_SYSDEV_ATTR(l1_dcache_size,      0444, show_l1_dcache_size, NULL),

	_SYSDEV_ATTR(l1_dcache_line_size, 0444, show_l1_dcache_line_size, NULL),

	_SYSDEV_ATTR(l1_icache_size,      0444, show_l1_icache_size, NULL),

	_SYSDEV_ATTR(l1_icache_line_size, 0444, show_l1_icache_line_size, NULL),

	_SYSDEV_ATTR(l2_cache_size,       0444, show_l2_cache_size, NULL),

	_SYSDEV_ATTR(l2_cache_line_size,  0444, show_l2_cache_line_size, NULL),

};

static void register_cpu_online(unsigned int cpu)

{

	struct cpu *c = &per_cpu(cpu_devices, cpu);

	struct sys_device *s = &c->sysdev;

	int i;

	for (i = 0; i < ARRAY_SIZE(cpu_core_attrs); i++)

		sysdev_create_file(s, &cpu_core_attrs[i]);

}

#ifdef CONFIG_HOTPLUG_CPU

static void unregister_cpu_online(unsigned int cpu)

{

	struct cpu *c = &per_cpu(cpu_devices, cpu);

	struct sys_device *s = &c->sysdev;

	int i;

	for (i = 0; i < ARRAY_SIZE(cpu_core_attrs); i++)

		sysdev_remove_file(s, &cpu_core_attrs[i]);

}

#endif

static int __cpuinit sysfs_cpu_notify(struct notifier_block *self,

				      unsigned long action, void *hcpu)

{

	unsigned int cpu = (unsigned int)(long)hcpu;

	switch (action) {

	case CPU_ONLINE:

	case CPU_ONLINE_FROZEN:

		register_cpu_online(cpu);

		break;

#ifdef CONFIG_HOTPLUG_CPU

	case CPU_DEAD:

	case CPU_DEAD_FROZEN:

		unregister_cpu_online(cpu);

		break;

#endif

	}

	return NOTIFY_OK;

}

static struct notifier_block __cpuinitdata sysfs_cpu_nb = {

	.notifier_call	= sysfs_cpu_notify,

};

static int __init topology_init(void)

{

	int cpu;

	register_cpu_notifier(&sysfs_cpu_nb);

	for_each_possible_cpu(cpu) {

		struct cpu *c = &per_cpu(cpu_devices, cpu);

		register_cpu(c, cpu);

		if (cpu_online(cpu))

			register_cpu_online(cpu);

	}

	return 0;