sysrq_key 271 drivers/xen/manage.c char sysrq_key = '\0'; sysrq_key 279 drivers/xen/manage.c err = xenbus_scanf(xbt, "control", "sysrq", "%c", &sysrq_key); sysrq_key 295 drivers/xen/manage.c if (sysrq_key != '\0') { sysrq_key 309 drivers/xen/manage.c if (sysrq_key != '\0') sysrq_key 310 drivers/xen/manage.c handle_sysrq(sysrq_key);