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ACPI: Enable build of AML interpreter debugger

Browse source 
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 <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Lv Zheng 2015-10-19 10:25:56 +08:00 • committed by Rafael J. Wysocki
commit 4d946f7970
17 changed files with 43 additions and 49 deletions
Download patch file Download diff file Expand all files Collapse all files

9
drivers/acpi/Kconfig
View file

@ -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

18
drivers/acpi/acpica/Makefile
View file

@ -177,8 +177,24 @@ acpi-y += \
utxferror.o \
utxfmutex.o
acpi-$(ACPI_FUTURE_USAGE) += \
acpi-$(CONFIG_ACPI_DEBUGGER) += \
dbcmds.o \
dbconvert.o \
dbdisply.o \
dbexec.o \
dbhistry.o \
dbinput.o \
dbmethod.o \
dbnames.o \
dbobject.o \
dbstats.o \
dbutils.o \
dbxface.o \
rsdump.o \
acpi-$(ACPI_FUTURE_USAGE) += \
dbfileio.o \
dbtest.o \
utcache.o \
utfileio.o \
utprint.o \

2
drivers/acpi/acpica/acinterp.h
View file

@ -397,12 +397,10 @@ void
acpi_ex_dump_operands(union acpi_operand_object **operands,
const char *opcode_name, u32 num_opcodes);
#ifdef ACPI_FUTURE_USAGE
void
acpi_ex_dump_object_descriptor(union acpi_operand_object *object, u32 flags);
void acpi_ex_dump_namespace_node(struct acpi_namespace_node *node, u32 flags);
#endif /* ACPI_FUTURE_USAGE */
/*
* exnames - AML namestring support

4
drivers/acpi/acpica/acnamesp.h
View file

@ -193,9 +193,7 @@ acpi_ns_convert_to_resource(union acpi_operand_object *original_object,
/*
* nsdump - Namespace dump/print utilities
*/
#ifdef ACPI_FUTURE_USAGE
void acpi_ns_dump_tables(acpi_handle search_base, u32 max_depth);
#endif /* ACPI_FUTURE_USAGE */
void acpi_ns_dump_entry(acpi_handle handle, u32 debug_level);
@ -208,7 +206,6 @@ acpi_status
acpi_ns_dump_one_object(acpi_handle obj_handle,
u32 level, void *context, void **return_value);
#ifdef ACPI_FUTURE_USAGE
void
acpi_ns_dump_objects(acpi_object_type type,
u8 display_type,
@ -220,7 +217,6 @@ acpi_ns_dump_object_paths(acpi_object_type type,
u8 display_type,
u32 max_depth,
acpi_owner_id owner_id, acpi_handle start_handle);
#endif /* ACPI_FUTURE_USAGE */
/*
* nseval - Namespace evaluation functions

4
drivers/acpi/acpica/acparser.h
View file

@ -194,10 +194,8 @@ union acpi_parse_object *acpi_ps_find(union acpi_parse_object *scope,
union acpi_parse_object *acpi_ps_get_arg(union acpi_parse_object *op, u32 argn);
#ifdef ACPI_FUTURE_USAGE
union acpi_parse_object *acpi_ps_get_depth_next(union acpi_parse_object *origin,
union acpi_parse_object *op);
#endif /* ACPI_FUTURE_USAGE */
/*
* pswalk - parse tree walk routines
@ -235,9 +233,7 @@ void acpi_ps_free_op(union acpi_parse_object *op);
u8 acpi_ps_is_leading_char(u32 c);
#ifdef ACPI_FUTURE_USAGE
u32 acpi_ps_get_name(union acpi_parse_object *op);
#endif /* ACPI_FUTURE_USAGE */
void acpi_ps_set_name(union acpi_parse_object *op, u32 name);

2
drivers/acpi/acpica/acutils.h
View file

@ -635,9 +635,7 @@ void
acpi_ut_free_and_track(void *address,
u32 component, const char *module, u32 line);
#ifdef ACPI_FUTURE_USAGE
void acpi_ut_dump_allocation_info(void);
#endif /* ACPI_FUTURE_USAGE */
void acpi_ut_dump_allocations(u32 component, const char *module);

2
drivers/acpi/acpica/evxface.c
View file

@ -405,7 +405,7 @@ cleanup:
}
ACPI_EXPORT_SYMBOL(acpi_install_exception_handler)
#endif /* ACPI_FUTURE_USAGE */
#endif
#if (!ACPI_REDUCED_HARDWARE)
/*******************************************************************************

6
drivers/acpi/acpica/nsdump.c
View file

@ -60,7 +60,6 @@ acpi_ns_dump_one_device(acpi_handle obj_handle,
#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
#ifdef ACPI_FUTURE_USAGE
static acpi_status
acpi_ns_dump_one_object_path(acpi_handle obj_handle,
u32 level, void *context, void **return_value);
@ -68,7 +67,6 @@ acpi_ns_dump_one_object_path(acpi_handle obj_handle,
static acpi_status
acpi_ns_get_max_depth(acpi_handle obj_handle,
u32 level, void *context, void **return_value);
#endif /* ACPI_FUTURE_USAGE */
/*******************************************************************************
*
@ -625,7 +623,6 @@ cleanup:
return (AE_OK);
}
#ifdef ACPI_FUTURE_USAGE
/*******************************************************************************
*
* FUNCTION: acpi_ns_dump_objects
@ -680,9 +677,7 @@ acpi_ns_dump_objects(acpi_object_type type,
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
}
#endif /* ACPI_FUTURE_USAGE */
#ifdef ACPI_FUTURE_USAGE
/*******************************************************************************
*
* FUNCTION: acpi_ns_dump_one_object_path, acpi_ns_get_max_depth
@ -810,7 +805,6 @@ acpi_ns_dump_object_paths(acpi_object_type type,
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
}
#endif /* ACPI_FUTURE_USAGE */
/*******************************************************************************
*

2
drivers/acpi/acpica/pstree.c
View file

@ -183,7 +183,6 @@ acpi_ps_append_arg(union acpi_parse_object *op, union acpi_parse_object *arg)
}
}
#ifdef ACPI_FUTURE_USAGE
/*******************************************************************************
*
* FUNCTION: acpi_ps_get_depth_next
@ -317,4 +316,3 @@ union acpi_parse_object *acpi_ps_get_child(union acpi_parse_object *op)
return (child);
}
#endif
#endif /* ACPI_FUTURE_USAGE */

2
drivers/acpi/acpica/psutils.c
View file

@ -205,7 +205,6 @@ u8 acpi_ps_is_leading_char(u32 c)
/*
* Get op's name (4-byte name segment) or 0 if unnamed
*/
#ifdef ACPI_FUTURE_USAGE
u32 acpi_ps_get_name(union acpi_parse_object * op)
{
@ -219,7 +218,6 @@ u32 acpi_ps_get_name(union acpi_parse_object * op)
return (op->named.name);
}
#endif /* ACPI_FUTURE_USAGE */
/*
* Set op's name

2
drivers/acpi/acpica/rsutils.c
View file

@ -564,7 +564,6 @@ acpi_rs_get_crs_method_data(struct acpi_namespace_node *node,
*
******************************************************************************/
#ifdef ACPI_FUTURE_USAGE
acpi_status
acpi_rs_get_prs_method_data(struct acpi_namespace_node *node,
struct acpi_buffer *ret_buffer)
@ -596,7 +595,6 @@ acpi_rs_get_prs_method_data(struct acpi_namespace_node *node,
acpi_ut_remove_reference(obj_desc);
return_ACPI_STATUS(status);
}
#endif /* ACPI_FUTURE_USAGE */
/*******************************************************************************
*

4
drivers/acpi/acpica/rsxface.c
View file

@ -220,7 +220,7 @@ acpi_get_current_resources(acpi_handle device_handle,
}
ACPI_EXPORT_SYMBOL(acpi_get_current_resources)
#ifdef ACPI_FUTURE_USAGE
/*******************************************************************************
*
* FUNCTION: acpi_get_possible_resources
@ -262,7 +262,7 @@ acpi_get_possible_resources(acpi_handle device_handle,
}
ACPI_EXPORT_SYMBOL(acpi_get_possible_resources)
#endif /* ACPI_FUTURE_USAGE */
/*******************************************************************************
*
* FUNCTION: acpi_set_current_resources

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

@ -253,7 +253,7 @@ acpi_install_initialization_handler(acpi_init_handler handler, u32 function)
}
ACPI_EXPORT_SYMBOL(acpi_install_initialization_handler)
#endif /* ACPI_FUTURE_USAGE */
#endif
/*****************************************************************************
*

11
drivers/acpi/osl.c
View file

@ -66,8 +66,6 @@ struct acpi_os_dpc {
/* stuff for debugger support */
int acpi_in_debugger;
EXPORT_SYMBOL(acpi_in_debugger);
extern char line_buf[80];
#endif /*ENABLE_DEBUGGER */
static int (*__acpi_os_prepare_sleep)(u8 sleep_state, u32 pm1a_ctrl,
@ -1345,15 +1343,13 @@ acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units)
return AE_OK;
}
#ifdef ACPI_FUTURE_USAGE
u32 acpi_os_get_line(char *buffer)
acpi_status acpi_os_get_line(char *buffer, u32 buffer_length, u32 *bytes_read)
{
#ifdef ENABLE_DEBUGGER
if (acpi_in_debugger) {
u32 chars;
kdb_read(buffer, sizeof(line_buf));
kdb_read(buffer, buffer_length);
/* remove the CR kdb includes */
chars = strlen(buffer) - 1;
@ -1361,9 +1357,8 @@ u32 acpi_os_get_line(char *buffer)
}
#endif
return 0;
return AE_OK;
}
#endif /* ACPI_FUTURE_USAGE */
acpi_status acpi_os_signal(u32 function, void *info)
{