lkml.org 
[lkml]   [2021]   [Feb]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v1 3/4] ACPI: Drop unused ACPI_*_COMPONENT definitions and update documentation
Date
From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Drop the definitions of the following symbols:

ACPI_SBS_COMPONENT
ACPI_FAN_COMPONENT
ACPI_CONTAINER_COMPONENT
ACPI_MEMORY_DEVICE_COMPONENT

that are not used in a meaningful way any more and update the ACPI
debug documentation to avoid confusing users by making the impression
that the ACPICA debug can be used for anything other than ACPICA
itself, which is incorrect.

No functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
Documentation/firmware-guide/acpi/debug.rst | 29 +++++++++++-----------------
drivers/acpi/sysfs.c | 5 ----
include/acpi/acpi_drivers.h | 9 --------
3 files changed, 12 insertions(+), 31 deletions(-)

Index: linux-pm/Documentation/firmware-guide/acpi/debug.rst
===================================================================
--- linux-pm.orig/Documentation/firmware-guide/acpi/debug.rst
+++ linux-pm/Documentation/firmware-guide/acpi/debug.rst
@@ -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
===========
Index: linux-pm/drivers/acpi/sysfs.c
===================================================================
--- linux-pm.orig/drivers/acpi/sysfs.c
+++ linux-pm/drivers/acpi/sysfs.c
@@ -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[] = {
Index: linux-pm/include/acpi/acpi_drivers.h
===================================================================
--- linux-pm.orig/include/acpi/acpi_drivers.h
+++ linux-pm/include/acpi/acpi_drivers.h
@@ -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:


\
 
 \ /
  Last update: 2021-02-22 20:04    [W:0.067 / U:2.224 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site