Commit ab497507 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

Merge branch 'acpi-messages' 

* acpi-messages:
  hwmon: acpi_power_meter: Get rid of ACPICA message printing
  IIO: acpi-als: Get rid of ACPICA message printing
  ACPI: utils: Introduce acpi_evaluation_failure_warn()
  ACPI: Drop unused ACPI_*_COMPONENT definitions and update documentation
  ACPI: sysfs: Get rid of ACPICA message printing
parents 25d95763 ebf1bef3

Documentation/firmware-guide/acpi/debug.rst

+12 −18
Original line number Diff line number Diff line 
.. 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
@@ -52,11 +51,6 @@ shows the supported mask values, currently these:: 
    ACPI_CA_DISASSEMBLER            0x00000800

    ACPI_COMPILER                   0x00001000

    ACPI_TOOLS                      0x00002000

    ACPI_SBS_COMPONENT              0x00100000

    ACPI_FAN_COMPONENT              0x00200000

    ACPI_CONTAINER_COMPONENT        0x01000000

    ACPI_SYSTEM_COMPONENT           0x02000000

    ACPI_MEMORY_DEVICE_COMPONENT    0x08000000



debug_level

===========

drivers/acpi/pci_link.c

+2 −4
Original line number Diff line number Diff line
@@ -256,8 +256,7 @@ static int acpi_pci_link_get_current(struct acpi_pci_link *link) 
	status = acpi_walk_resources(handle, METHOD_NAME__CRS,

				     acpi_pci_link_check_current, &irq);

	if (ACPI_FAILURE(status)) {

		acpi_handle_warn(handle, "_CRS evaluation failed: %s\n",

				 acpi_format_exception(status));

		acpi_evaluation_failure_warn(handle, "_CRS", status);

		result = -ENODEV;

		goto end;

	}
@@ -345,8 +344,7 @@ static int acpi_pci_link_set(struct acpi_pci_link *link, int irq) 


	/* check for total failure */

	if (ACPI_FAILURE(status)) {

		acpi_handle_warn(handle, "_SRS evaluation failed: %s",

				 acpi_format_exception(status));

		acpi_evaluation_failure_warn(handle, "_SRS", status);

		result = -ENODEV;

		goto end;

	}

drivers/acpi/processor_perflib.c

+3 −7
Original line number Diff line number Diff line
@@ -67,9 +67,7 @@ static int acpi_processor_get_platform_limit(struct acpi_processor *pr) 
		acpi_processor_ppc_in_use = true;



		if (ACPI_FAILURE(status)) {

			acpi_handle_warn(pr->handle,

					 "_PPC evaluation failed: %s\n",

					 acpi_format_exception(status));

			acpi_evaluation_failure_warn(pr->handle, "_PPC", status);

			return -ENODEV;

		}

	}
@@ -199,8 +197,7 @@ static int acpi_processor_get_performance_control(struct acpi_processor *pr) 


	status = acpi_evaluate_object(pr->handle, "_PCT", NULL, &buffer);

	if (ACPI_FAILURE(status)) {

		acpi_handle_warn(pr->handle, "_PCT evaluation failed: %s\n",

				 acpi_format_exception(status));

		acpi_evaluation_failure_warn(pr->handle, "_PCT", status);

		return -ENODEV;

	}
@@ -300,8 +297,7 @@ static int acpi_processor_get_performance_states(struct acpi_processor *pr) 


	status = acpi_evaluate_object(pr->handle, "_PSS", NULL, &buffer);

	if (ACPI_FAILURE(status)) {

		acpi_handle_warn(pr->handle, "_PSS evaluation failed: %s\n",

				 acpi_format_exception(status));

		acpi_evaluation_failure_warn(pr->handle, "_PSS", status);

		return -ENODEV;

	}

drivers/acpi/processor_throttling.c

+4 −12
Original line number Diff line number Diff line
@@ -281,9 +281,7 @@ static int acpi_processor_get_platform_limit(struct acpi_processor *pr) 
	status = acpi_evaluate_integer(pr->handle, "_TPC", NULL, &tpc);

	if (ACPI_FAILURE(status)) {

		if (status != AE_NOT_FOUND)

			acpi_handle_warn(pr->handle,

					 "_TPC evaluation failed: %s\n",

					 acpi_format_exception(status));

			acpi_evaluation_failure_warn(pr->handle, "_TPC", status);



		return -ENODEV;

	}
@@ -416,9 +414,7 @@ static int acpi_processor_get_throttling_control(struct acpi_processor *pr) 
	status = acpi_evaluate_object(pr->handle, "_PTC", NULL, &buffer);

	if (ACPI_FAILURE(status)) {

		if (status != AE_NOT_FOUND)

			acpi_handle_warn(pr->handle,

					 "_PTC evaluation failed: %s\n",

					 acpi_format_exception(status));

			acpi_evaluation_failure_warn(pr->handle, "_PTC", status);



		return -ENODEV;

	}
@@ -503,9 +499,7 @@ static int acpi_processor_get_throttling_states(struct acpi_processor *pr) 
	status = acpi_evaluate_object(pr->handle, "_TSS", NULL, &buffer);

	if (ACPI_FAILURE(status)) {

		if (status != AE_NOT_FOUND)

			acpi_handle_warn(pr->handle,

					 "_TSS evaluation failed: %s\n",

					 acpi_format_exception(status));

			acpi_evaluation_failure_warn(pr->handle, "_TSS", status);



		return -ENODEV;

	}
@@ -586,9 +580,7 @@ static int acpi_processor_get_tsd(struct acpi_processor *pr) 
	status = acpi_evaluate_object(pr->handle, "_TSD", NULL, &buffer);

	if (ACPI_FAILURE(status)) {

		if (status != AE_NOT_FOUND)

			acpi_handle_warn(pr->handle,

					 "_TSD evaluation failed: %s\n",

					 acpi_format_exception(status));

			acpi_evaluation_failure_warn(pr->handle, "_TSD", status);



		return -ENODEV;

	}

drivers/acpi/sysfs.c

+1 −11
Original line number Diff line number Diff line
@@ -12,9 +12,6 @@ 


#include "internal.h"



#define _COMPONENT		ACPI_SYSTEM_COMPONENT

ACPI_MODULE_NAME("sysfs");



#ifdef CONFIG_ACPI_DEBUG

/*

 * ACPI debug sysfs I/F, including:
@@ -51,12 +48,6 @@ static const struct acpi_dlayer acpi_debug_layers[] = { 
	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_SYSTEM_COMPONENT),

	ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT),

};



static const struct acpi_dlevel acpi_debug_levels[] = {
@@ -650,8 +641,7 @@ static int get_status(u32 index, acpi_event_status *ret, 
	if (index < num_gpes) {

		status = acpi_get_gpe_device(index, handle);

		if (ACPI_FAILURE(status)) {

			ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND,

					"Invalid GPE 0x%x", index));

			pr_warn("Invalid GPE 0x%x", index);

			return -ENXIO;

		}

		status = acpi_get_gpe_status(*handle, index, ret);