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Date: Thu, 15 Oct 2015 10:08:54 +0800
From: Lv Zheng <lv.zheng@...el.com>
To: "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
Len Brown <len.brown@...el.com>
Cc: Lv Zheng <lv.zheng@...el.com>, Lv Zheng <zetalog@...il.com>,
<linux-kernel@...r.kernel.org>, linux-acpi@...r.kernel.org
Subject: [PATCH 11/13] 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 <lv.zheng@...el.com>
---
drivers/acpi/Kconfig | 9 +++++++++
drivers/acpi/acpica/Makefile | 16 ++++++++++++++++
drivers/acpi/acpica/acinterp.h | 2 --
drivers/acpi/acpica/acnamesp.h | 4 ----
drivers/acpi/acpica/acparser.h | 4 ----
drivers/acpi/acpica/acutils.h | 2 --
drivers/acpi/acpica/evxface.c | 2 +-
drivers/acpi/acpica/nsdump.c | 6 ------
drivers/acpi/acpica/pstree.c | 2 --
drivers/acpi/acpica/psutils.c | 2 --
drivers/acpi/acpica/rsutils.c | 2 --
drivers/acpi/acpica/rsxface.c | 4 ++--
drivers/acpi/acpica/utxface.c | 2 +-
drivers/acpi/osl.c | 11 +++--------
include/acpi/acpixf.h | 10 ----------
include/acpi/platform/aclinux.h | 7 +++++--
include/acpi/platform/aclinuxex.h | 5 +++++
17 files changed, 42 insertions(+), 48 deletions(-)
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 5d1015c..706c2e9 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
diff --git a/drivers/acpi/acpica/Makefile b/drivers/acpi/acpica/Makefile
index fedcc16..a57f019 100644
--- a/drivers/acpi/acpica/Makefile
+++ b/drivers/acpi/acpica/Makefile
@@ -178,7 +178,23 @@ acpi-y += \
utxferror.o \
utxfmutex.o
+acpi-$(CONFIG_ACPI_DEBUGGER) += \
+ dbcmds.o \
+ dbconvert.o \
+ dbdisply.o \
+ dbexec.o \
+ dbhistry.o \
+ dbinput.o \
+ dbmethod.o \
+ dbnames.o \
+ dbobject.o \
+ dbstats.o \
+ dbutils.o \
+ dbxface.o
+
acpi-$(ACPI_FUTURE_USAGE) += \
+ dbfileio.o \
+ dbtest.o \
utcache.o \
utfileio.o \
utprint.o \
diff --git a/drivers/acpi/acpica/acinterp.h b/drivers/acpi/acpica/acinterp.h
index e820ed8..e9e936e 100644
--- a/drivers/acpi/acpica/acinterp.h
+++ b/drivers/acpi/acpica/acinterp.h
@@ -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
diff --git a/drivers/acpi/acpica/acnamesp.h b/drivers/acpi/acpica/acnamesp.h
index ea0d907..5d261c9 100644
--- a/drivers/acpi/acpica/acnamesp.h
+++ b/drivers/acpi/acpica/acnamesp.h
@@ -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
diff --git a/drivers/acpi/acpica/acparser.h b/drivers/acpi/acpica/acparser.h
index 6021ccf..8fc8c7c 100644
--- a/drivers/acpi/acpica/acparser.h
+++ b/drivers/acpi/acpica/acparser.h
@@ -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);
diff --git a/drivers/acpi/acpica/acutils.h b/drivers/acpi/acpica/acutils.h
index fb2aa50..8b8fef6 100644
--- a/drivers/acpi/acpica/acutils.h
+++ b/drivers/acpi/acpica/acutils.h
@@ -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);
diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c
index 81f2d9e..07d22bf 100644
--- a/drivers/acpi/acpica/evxface.c
+++ b/drivers/acpi/acpica/evxface.c
@@ -405,7 +405,7 @@ cleanup:
}
ACPI_EXPORT_SYMBOL(acpi_install_exception_handler)
-#endif /* ACPI_FUTURE_USAGE */
+#endif
#if (!ACPI_REDUCED_HARDWARE)
/*******************************************************************************
diff --git a/drivers/acpi/acpica/nsdump.c b/drivers/acpi/acpica/nsdump.c
index 0f1daba..37aa5c4 100644
--- a/drivers/acpi/acpica/nsdump.c
+++ b/drivers/acpi/acpica/nsdump.c
@@ -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 */
/*******************************************************************************
*
diff --git a/drivers/acpi/acpica/pstree.c b/drivers/acpi/acpica/pstree.c
index 89984f3..cf2f2fa 100644
--- a/drivers/acpi/acpica/pstree.c
+++ b/drivers/acpi/acpica/pstree.c
@@ -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 */
diff --git a/drivers/acpi/acpica/psutils.c b/drivers/acpi/acpica/psutils.c
index 183cc1e..71d2877 100644
--- a/drivers/acpi/acpica/psutils.c
+++ b/drivers/acpi/acpica/psutils.c
@@ -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
diff --git a/drivers/acpi/acpica/rsutils.c b/drivers/acpi/acpica/rsutils.c
index 52b024d..9486992 100644
--- a/drivers/acpi/acpica/rsutils.c
+++ b/drivers/acpi/acpica/rsutils.c
@@ -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 */
/*******************************************************************************
*
diff --git a/drivers/acpi/acpica/rsxface.c b/drivers/acpi/acpica/rsxface.c
index de51f83..1e8cd57 100644
--- a/drivers/acpi/acpica/rsxface.c
+++ b/drivers/acpi/acpica/rsxface.c
@@ -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
diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c
index a6b0eb0..f9c8f9c 100644
--- a/drivers/acpi/acpica/utxface.c
+++ b/drivers/acpi/acpica/utxface.c
@@ -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
/*****************************************************************************
*
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 739a4a6..3272915 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -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)
{
diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index c33eeab..89a4018 100644
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -393,15 +393,11 @@ ACPI_EXTERNAL_RETURN_STATUS(acpi_status __init acpi_terminate(void))
*/
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_enable(void))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_disable(void))
-#ifdef ACPI_FUTURE_USAGE
ACPI_EXTERNAL_RETURN_STATUS(acpi_status acpi_subsystem_status(void))
-#endif
-#ifdef ACPI_FUTURE_USAGE
ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_get_system_info(struct acpi_buffer
*ret_buffer))
-#endif
ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_get_statistics(struct acpi_statistics *stats))
ACPI_EXTERNAL_RETURN_PTR(const char
@@ -625,11 +621,9 @@ ACPI_EXTERNAL_RETURN_STATUS(acpi_status
space_id,
acpi_adr_space_handler
handler))
-#ifdef ACPI_FUTURE_USAGE
ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_install_exception_handler
(acpi_exception_handler handler))
-#endif
ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_install_interface_handler
(acpi_interface_handler handler))
@@ -750,12 +744,10 @@ ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_get_current_resources(acpi_handle device,
struct acpi_buffer
*ret_buffer))
-#ifdef ACPI_FUTURE_USAGE
ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_get_possible_resources(acpi_handle device,
struct acpi_buffer
*ret_buffer))
-#endif
ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_get_event_resources(acpi_handle device_handle,
struct acpi_buffer
@@ -844,7 +836,6 @@ ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
/*
* ACPI Timer interfaces
*/
-#ifdef ACPI_FUTURE_USAGE
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
acpi_get_timer_resolution(u32 *resolution))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_get_timer(u32 *ticks))
@@ -853,7 +844,6 @@ ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
acpi_get_timer_duration(u32 start_ticks,
u32 end_ticks,
u32 *time_elapsed))
-#endif /* ACPI_FUTURE_USAGE */
/*
* Error/Warning output
diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
index 74ba46c..323e5da 100644
--- a/include/acpi/platform/aclinux.h
+++ b/include/acpi/platform/aclinux.h
@@ -63,12 +63,16 @@
#define ACPI_USE_SYSTEM_INTTYPES
-/* Compile for reduced hardware mode only with this kernel config */
+/* Kernel specific ACPICA configuration */
#ifdef CONFIG_ACPI_REDUCED_HARDWARE_ONLY
#define ACPI_REDUCED_HARDWARE 1
#endif
+#ifdef CONFIG_ACPI_DEBUGGER
+#define ACPI_DEBUGGER
+#endif
+
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/ctype.h>
@@ -151,7 +155,6 @@
* OSL interfaces used by utilities
*/
#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_redirect_output
-#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_line
#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_name
#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_index
#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_address
diff --git a/include/acpi/platform/aclinuxex.h b/include/acpi/platform/aclinuxex.h
index acedc3f..fd6d70f 100644
--- a/include/acpi/platform/aclinuxex.h
+++ b/include/acpi/platform/aclinuxex.h
@@ -124,6 +124,11 @@ static inline acpi_thread_id acpi_os_get_thread_id(void)
lock ? AE_OK : AE_NO_MEMORY; \
})
+static inline u8 acpi_os_readable(void *pointer, acpi_size length)
+{
+ return TRUE;
+}
+
/*
* OSL interfaces added by Linux
*/
--
1.7.10
--
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