ACPI_SIG_GTDT 383 drivers/acpi/arm64/gtdt.c if (ACPI_FAILURE(acpi_get_table(ACPI_SIG_GTDT, 0, &table))) ACPI_SIG_GTDT 1624 drivers/clocksource/arm_arch_timer.c TIMER_ACPI_DECLARE(arch_timer, ACPI_SIG_GTDT, arch_timer_acpi_init);