From 4d946f7970e51d80f8358e0a619dfb17d89e0920 Mon Sep 17 00:00:00 2001 From: Lv Zheng Date: Mon, 19 Oct 2015 10:25:56 +0800 Subject: ACPI: Enable build of AML interpreter debugger This patch enables ACPICA debugger files using a configurable CONFIG_ACPI_DEBUGGER configuration item. Those debugger related code that was originally masked as ACPI_FUTURE_USAGE now gets unmasked. Necessary OSL stubs are also added in this patch: 1. acpi_os_readable(): This should be arch specific in Linux, while this patch doesn't introduce real implementation and a complex mechanism to allow architecture specific acpi_os_readable() to be implemented to validate the address. It may be done by future commits. 2. acpi_os_get_line(): This is used to obtain debugger command input. This patch only introduces a simple KDB concept example in it and the example should be co-working with the code implemented in acpi_os_printf(). Since this KDB example won't be compiled unless ENABLE_DEBUGGER is defined and it seems Linux has already stopped to use ENABLE_DEBUGGER, thus do not expect it can work properly. This patch also cleans up all other ACPI_FUTURE_USAGE surroundings accordingly. 1. Since linkage error can be automatically detected, declaration in the headers needn't be surrounded by ACPI_FUTURE_USAGE. So only the following separate exported fuction bodies are masked by this macro (other exported fucntions may have already been masked at entire module level via drivers/acpi/acpica/Makefile): acpi_install_exception_handler() acpi_subsystem_status() acpi_get_system_info() acpi_get_statistics() acpi_install_initialization_handler() 2. Since strip can automatically zap the no-user functions, functions that are not marked with ACPI_EXPORT_SYMBOL() needn't get surrounded by ACPI_FUTURE_USAGE. So the following function which is not used by Linux kernel now won't get surrounded by this macro: acpi_ps_get_name() Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- drivers/acpi/Kconfig | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/acpi/Kconfig') diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 5d1015c26ff4..706c2e95503f 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -57,6 +57,15 @@ config ACPI_SYSTEM_POWER_STATES_SUPPORT config ACPI_CCA_REQUIRED bool +config ACPI_DEBUGGER + bool "In-kernel debugger (EXPERIMENTAL)" + select ACPI_DEBUG + help + Enable in-kernel debugging facilities: statistics, internal + object dump, single step control method execution. + This is still under development, currently enabling this only + results in the compilation of the ACPICA debugger files. + config ACPI_SLEEP bool depends on SUSPEND || HIBERNATION -- cgit v1.2.3