-/* Notify userspace when a cpu event occurs, by running '/sbin/hotplug
- * cpu' with certain environment variables set. */
-static int cpu_run_sbin_hotplug(unsigned int cpu, const char *action)
-{
- char *argv[3], *envp[6], cpu_str[12], action_str[32], devpath_str[40];
- int i;
-
- sprintf(cpu_str, "CPU=%d", cpu);
- sprintf(action_str, "ACTION=%s", action);
- sprintf(devpath_str, "DEVPATH=devices/system/cpu/cpu%d", cpu);
-
- i = 0;
- argv[i++] = hotplug_path;
- argv[i++] = "cpu";
- argv[i] = NULL;
-
- i = 0;
- /* minimal command environment */
- envp[i++] = "HOME=/";
- envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
- envp[i++] = cpu_str;
- envp[i++] = action_str;
- envp[i++] = devpath_str;
- envp[i] = NULL;
-
- return call_usermodehelper(argv[0], argv, envp, 0);
-}
-