• Lv Zheng's avatar
    ACPI: Enable build of AML interpreter debugger · 4d946f79
    Lv Zheng authored
    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: default avatarLv Zheng <lv.zheng@intel.com>
    Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
    4d946f79
psutils.c 6.8 KB