dev_attr_purr 795 arch/powerpc/kernel/sysfs.c add_write_permission_dev_attr(&dev_attr_purr); dev_attr_purr 796 arch/powerpc/kernel/sysfs.c device_create_file(s, &dev_attr_purr); dev_attr_purr 883 arch/powerpc/kernel/sysfs.c device_remove_file(s, &dev_attr_purr);