===================================================================
@@ -1,18 +1,17 @@
.. SPDX-License-Identifier: GPL-2.0
-=================
-ACPI Debug Output
-=================
+====================
+ACPI CA Debug Output
+====================
-The ACPI CA, the Linux ACPI core, and some ACPI drivers can generate debug
-output. This document describes how to use this facility.
+The ACPI CA can generate debug output. This document describes how to use this
+facility.
Compile-time configuration
==========================
-ACPI debug output is globally enabled by CONFIG_ACPI_DEBUG. If this config
-option is turned off, the debug messages are not even built into the
-kernel.
+The ACPI CA debug output is globally enabled by CONFIG_ACPI_DEBUG. If this
+config option is not set, the debug messages are not even built into the kernel.
Boot- and run-time configuration
================================
@@ -27,16 +26,16 @@ debug_layer (component)
=======================
The "debug_layer" is a mask that selects components of interest, e.g., a
-specific driver or part of the ACPI interpreter. To build the debug_layer
-bitmask, look for the "#define _COMPONENT" in an ACPI source file.
+specific part of the ACPI interpreter. To build the debug_layer bitmask, look
+for the "#define _COMPONENT" in an ACPI source file.
You can set the debug_layer mask at boot-time using the acpi.debug_layer
command line argument, and you can change it after boot by writing values
to /sys/module/acpi/parameters/debug_layer.
-The possible components are defined in include/acpi/acoutput.h and
-include/acpi/acpi_drivers.h. Reading /sys/module/acpi/parameters/debug_layer
-shows the supported mask values, currently these::
+The possible components are defined in include/acpi/acoutput.h.
+
+Reading /sys/module/acpi/parameters/debug_layer shows the supported mask values::
ACPI_UTILITIES 0x00000001
ACPI_HARDWARE 0x00000002
@@ -52,10 +51,6 @@ shows the supported mask values, current
ACPI_CA_DISASSEMBLER 0x00000800
ACPI_COMPILER 0x00001000
ACPI_TOOLS 0x00002000
- ACPI_SBS_COMPONENT 0x00100000
- ACPI_FAN_COMPONENT 0x00200000
- ACPI_CONTAINER_COMPONENT 0x01000000
- ACPI_MEMORY_DEVICE_COMPONENT 0x08000000
debug_level
===========
===================================================================
@@ -48,11 +48,6 @@ static const struct acpi_dlayer acpi_deb
ACPI_DEBUG_INIT(ACPI_CA_DISASSEMBLER),
ACPI_DEBUG_INIT(ACPI_COMPILER),
ACPI_DEBUG_INIT(ACPI_TOOLS),
-
- ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT),
- ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT),
- ACPI_DEBUG_INIT(ACPI_CONTAINER_COMPONENT),
- ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT),
};
static const struct acpi_dlevel acpi_debug_levels[] = {
===================================================================
@@ -12,15 +12,6 @@
#define ACPI_MAX_STRING 80
/*
- * Please update drivers/acpi/debug.c and Documentation/firmware-guide/acpi/debug.rst
- * if you add to this list.
- */
-#define ACPI_SBS_COMPONENT 0x00100000
-#define ACPI_FAN_COMPONENT 0x00200000
-#define ACPI_CONTAINER_COMPONENT 0x01000000
-#define ACPI_MEMORY_DEVICE_COMPONENT 0x08000000
-
-/*
* _HID definitions
* HIDs must conform to ACPI spec(6.1.4)
* Linux specific HIDs do not apply to this and begin with LNX: