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-rw-r--r--drivers/base/cpu.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index e62a4ccea54..7c03af7b84a 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -72,6 +72,38 @@ void unregister_cpu(struct cpu *cpu)
per_cpu(cpu_sys_devices, logical_cpu) = NULL;
return;
}
+
+#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
+static ssize_t cpu_probe_store(struct class *class, const char *buf,
+ size_t count)
+{
+ return arch_cpu_probe(buf, count);
+}
+
+static ssize_t cpu_release_store(struct class *class, const char *buf,
+ size_t count)
+{
+ return arch_cpu_release(buf, count);
+}
+
+static CLASS_ATTR(probe, S_IWUSR, NULL, cpu_probe_store);
+static CLASS_ATTR(release, S_IWUSR, NULL, cpu_release_store);
+
+int __init cpu_probe_release_init(void)
+{
+ int rc;
+
+ rc = sysfs_create_file(&cpu_sysdev_class.kset.kobj,
+ &class_attr_probe.attr);
+ if (!rc)
+ rc = sysfs_create_file(&cpu_sysdev_class.kset.kobj,
+ &class_attr_release.attr);
+
+ return rc;
+}
+device_initcall(cpu_probe_release_init);
+#endif /* CONFIG_ARCH_CPU_PROBE_RELEASE */
+
#else /* ... !CONFIG_HOTPLUG_CPU */
static inline void register_cpu_control(struct cpu *cpu)
{