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ACPICA: Deploy ACPI_EXPORT_SYMBOL_INIT for main ACPICA initialization interfaces.

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This changes can reduce source code differences between Linux and ACPICA
upstream to help improving the release automation.

The side effect of applying this patch in Linux is:
1. Some ACPICA initialization/termination APIs are no longer exported in
   Linux, these include:
    acpi_load_tables
    acpi_initialize_subsystem
    acpi_enable_subsystem
    acpi_initialize_objects
    acpi_terminate
2. This patch does not affect the following APIs as they are currently not
   marked with ACPI_EXPORT_SYMBOL in Linux:
    acpi_reallocate_root_table
    acpi_initialize_tables
Such functions should not be exported as they are internal to ACPI
subsystem in Linux, and will only be invoked inside of ACPI subsystem's
initialization routines marked with __init and termination routines marked
with __exit.  While on other OSPMs, such functions may still need to be
exported.

Thus this patch adds the configurability for ACPICA, so that it leaves
OSPMs to determine if the __init/__exit marked functions should be exported
or not.  Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Lv Zheng 2013-10-29 09:30:10 +08:00 committed by Rafael J. Wysocki
parent 10622bf8ce
commit d21f600b0e
5 changed files with 25 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/acpi/acpica/tbxface.c
View File

@ -148,6 +148,8 @@ acpi_initialize_tables(struct acpi_table_desc * initial_table_array,
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_tables)
/*******************************************************************************
*
* FUNCTION: acpi_reallocate_root_table
@ -182,6 +184,8 @@ acpi_status acpi_reallocate_root_table(void)
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL_INIT(acpi_reallocate_root_table)
/*******************************************************************************
*
* FUNCTION: acpi_get_table_header
@ -357,6 +361,7 @@ acpi_get_table_with_size(char *signature,
return (AE_NOT_FOUND);
}
ACPI_EXPORT_SYMBOL(acpi_get_table_with_size)
acpi_status
@ -368,6 +373,7 @@ acpi_get_table(char *signature,
return acpi_get_table_with_size(signature,
instance, out_table, &tbl_size);
}
ACPI_EXPORT_SYMBOL(acpi_get_table)
/*******************************************************************************
@ -425,7 +431,6 @@ acpi_get_table_by_index(u32 table_index, struct acpi_table_header **table)
ACPI_EXPORT_SYMBOL(acpi_get_table_by_index)
/*******************************************************************************
*
* FUNCTION: acpi_install_table_handler

2
drivers/acpi/acpica/tbxfload.c
View File

@ -83,7 +83,7 @@ acpi_status acpi_load_tables(void)
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_load_tables)
ACPI_EXPORT_SYMBOL_INIT(acpi_load_tables)
/*******************************************************************************
*

2
drivers/acpi/acpica/utxface.c
View File

@ -105,7 +105,7 @@ acpi_status acpi_terminate(void)
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_terminate)
ACPI_EXPORT_SYMBOL_INIT(acpi_terminate)
#ifndef ACPI_ASL_COMPILER
#ifdef ACPI_FUTURE_USAGE

9
drivers/acpi/acpica/utxfinit.c
View File

@ -125,7 +125,8 @@ acpi_status acpi_initialize_subsystem(void)
ACPI_DEBUGGER_EXEC(status = acpi_db_initialize());
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_initialize_subsystem)
ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_subsystem)
/*******************************************************************************
*
@ -229,7 +230,8 @@ acpi_status acpi_enable_subsystem(u32 flags)
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_enable_subsystem)
ACPI_EXPORT_SYMBOL_INIT(acpi_enable_subsystem)
/*******************************************************************************
*
@ -315,4 +317,5 @@ acpi_status acpi_initialize_objects(u32 flags)
acpi_gbl_startup_flags |= ACPI_INITIALIZED_OK;
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_initialize_objects)
ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_objects)

13
include/acpi/actypes.h
View File

@ -299,9 +299,18 @@ typedef u32 acpi_physical_address;
#endif
/*
* All ACPICA functions that are available to the rest of the kernel are
* tagged with this macro which can be defined as appropriate for the host.
* All ACPICA external functions that are available to the rest of the kernel
* are tagged with thes macros which can be defined as appropriate for the host.
*
* Notes:
* ACPI_EXPORT_SYMBOL_INIT is used for initialization and termination
* interfaces that may need special processing.
* ACPI_EXPORT_SYMBOL is used for all other public external functions.
*/
#ifndef ACPI_EXPORT_SYMBOL_INIT
#define ACPI_EXPORT_SYMBOL_INIT(symbol)
#endif
#ifndef ACPI_EXPORT_SYMBOL
#define ACPI_EXPORT_SYMBOL(symbol)
#endif