xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ACPICA: Executer: Add interpreter tracing mode for method tracing facility

Browse Source 
ACPICA commit 07fffd02607685b655ed92ee15c160e6a810b60b

The acpi_debug_trace() is the mechanism known as ACPI method tracing that is
used by Linux as ACPICA debugging message reducer. This facility can be
controlled through Linux ACPI subsystem - /sys/module/acpi/parameters.
This facility requires CONFIG_ACPI_DEBUG to be enabled to see ACPICA trace
logs in the kernel dmesg output.

This patch enhances acpi_debug_trace() to make it not only a message reducer,
but a real tracer to trace AML interpreter execution. Note that in addition
to the AML tracer enabling, this patch also updates the facility with the
following enhancements:
1. Allow a full path to be specified by the acpi_debug_trace() API.
2. Allow any method rather than just the entrance of acpi_evaluate_object()
   to be traced.
3. All interpreter ACPI_LV_TRACE_POINT messages are collected for
   ACPI_EXECUTER layer.

The Makefile of drivers/acpi/acpica is also updated to include exdebug.o
and the duplicated stubs are removed after that.

Note that since this patch has enhanced the method tracing facility, Linux
need also be updated after applying this patch. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/07fffd02
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Lv Zheng
2015-07-23 12:52:59 +08:00
committed by Rafael J. Wysocki
parent a616dc2fe5
commit ab6c573320
12 changed files with 327 additions and 185 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
include/acpi/acoutput.h
View File

@@ -184,6 +184,19 @@
#define ACPI_NORMAL_DEFAULT (ACPI_LV_INIT | ACPI_LV_DEBUG_OBJECT | ACPI_LV_REPAIR)
#define ACPI_DEBUG_ALL (ACPI_LV_AML_DISASSEMBLE | ACPI_LV_ALL_EXCEPTIONS | ACPI_LV_ALL)
/*
* Global trace flags
*/
#define ACPI_TRACE_ENABLED ((u32) 2)
#define ACPI_TRACE_ONESHOT ((u32) 1)
/* Defaults for trace debugging level/layer */
#define ACPI_TRACE_LEVEL_ALL ACPI_LV_ALL
#define ACPI_TRACE_LAYER_ALL 0x000001FF
#define ACPI_TRACE_LEVEL_DEFAULT ACPI_LV_TRACE_POINT
#define ACPI_TRACE_LAYER_DEFAULT ACPI_EXECUTER
#if defined (ACPI_DEBUG_OUTPUT) || !defined (ACPI_NO_ERROR_MESSAGES)
/*
* The module name is used primarily for error and debug messages.