1 /******************************************************************************
3 * Module Name: extrace - Support for interpreter execution tracing
5 *****************************************************************************/
8 * Copyright (C) 2000 - 2017, Intel Corp.
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12 * modification, are permitted provided that the following conditions
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20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
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23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
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44 #include <acpi/acpi.h>
49 #define _COMPONENT ACPI_EXECUTER
50 ACPI_MODULE_NAME("extrace")
52 static union acpi_operand_object *acpi_gbl_trace_method_object = NULL;
54 /* Local prototypes */
56 #ifdef ACPI_DEBUG_OUTPUT
57 static const char *acpi_ex_get_trace_event_name(acpi_trace_event_type type);
60 /*******************************************************************************
62 * FUNCTION: acpi_ex_interpreter_trace_enabled
64 * PARAMETERS: name - Whether method name should be matched,
65 * this should be checked before starting
68 * RETURN: TRUE if interpreter trace is enabled.
70 * DESCRIPTION: Check whether interpreter trace is enabled
72 ******************************************************************************/
74 static u8 acpi_ex_interpreter_trace_enabled(char *name)
77 /* Check if tracing is enabled */
79 if (!(acpi_gbl_trace_flags & ACPI_TRACE_ENABLED)) {
84 * Check if tracing is filtered:
86 * 1. If the tracer is started, acpi_gbl_trace_method_object should have
87 * been filled by the trace starter
88 * 2. If the tracer is not started, acpi_gbl_trace_method_name should be
89 * matched if it is specified
90 * 3. If the tracer is oneshot style, acpi_gbl_trace_method_name should
91 * not be cleared by the trace stopper during the first match
93 if (acpi_gbl_trace_method_object) {
98 (acpi_gbl_trace_method_name &&
99 strcmp(acpi_gbl_trace_method_name, name))) {
103 if ((acpi_gbl_trace_flags & ACPI_TRACE_ONESHOT) &&
104 !acpi_gbl_trace_method_name) {
111 /*******************************************************************************
113 * FUNCTION: acpi_ex_get_trace_event_name
115 * PARAMETERS: type - Trace event type
117 * RETURN: Trace event name.
119 * DESCRIPTION: Used to obtain the full trace event name.
121 ******************************************************************************/
123 #ifdef ACPI_DEBUG_OUTPUT
125 static const char *acpi_ex_get_trace_event_name(acpi_trace_event_type type)
129 case ACPI_TRACE_AML_METHOD:
133 case ACPI_TRACE_AML_OPCODE:
137 case ACPI_TRACE_AML_REGION:
149 /*******************************************************************************
151 * FUNCTION: acpi_ex_trace_point
153 * PARAMETERS: type - Trace event type
154 * begin - TRUE if before execution
155 * aml - Executed AML address
156 * pathname - Object path
160 * DESCRIPTION: Internal interpreter execution trace.
162 ******************************************************************************/
165 acpi_ex_trace_point(acpi_trace_event_type type,
166 u8 begin, u8 *aml, char *pathname)
169 ACPI_FUNCTION_NAME(ex_trace_point);
172 ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
173 "%s %s [0x%p:%s] execution.\n",
174 acpi_ex_get_trace_event_name(type),
175 begin ? "Begin" : "End", aml, pathname));
177 ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
178 "%s %s [0x%p] execution.\n",
179 acpi_ex_get_trace_event_name(type),
180 begin ? "Begin" : "End", aml));
184 /*******************************************************************************
186 * FUNCTION: acpi_ex_start_trace_method
188 * PARAMETERS: method_node - Node of the method
189 * obj_desc - The method object
190 * walk_state - current state, NULL if not yet executing
195 * DESCRIPTION: Start control method execution trace
197 ******************************************************************************/
200 acpi_ex_start_trace_method(struct acpi_namespace_node *method_node,
201 union acpi_operand_object *obj_desc,
202 struct acpi_walk_state *walk_state)
204 char *pathname = NULL;
207 ACPI_FUNCTION_NAME(ex_start_trace_method);
210 pathname = acpi_ns_get_normalized_pathname(method_node, TRUE);
213 enabled = acpi_ex_interpreter_trace_enabled(pathname);
214 if (enabled && !acpi_gbl_trace_method_object) {
215 acpi_gbl_trace_method_object = obj_desc;
216 acpi_gbl_original_dbg_level = acpi_dbg_level;
217 acpi_gbl_original_dbg_layer = acpi_dbg_layer;
218 acpi_dbg_level = ACPI_TRACE_LEVEL_ALL;
219 acpi_dbg_layer = ACPI_TRACE_LAYER_ALL;
221 if (acpi_gbl_trace_dbg_level) {
222 acpi_dbg_level = acpi_gbl_trace_dbg_level;
225 if (acpi_gbl_trace_dbg_layer) {
226 acpi_dbg_layer = acpi_gbl_trace_dbg_layer;
231 ACPI_TRACE_POINT(ACPI_TRACE_AML_METHOD, TRUE,
232 obj_desc ? obj_desc->method.aml_start : NULL,
241 /*******************************************************************************
243 * FUNCTION: acpi_ex_stop_trace_method
245 * PARAMETERS: method_node - Node of the method
246 * obj_desc - The method object
247 * walk_state - current state, NULL if not yet executing
252 * DESCRIPTION: Stop control method execution trace
254 ******************************************************************************/
257 acpi_ex_stop_trace_method(struct acpi_namespace_node *method_node,
258 union acpi_operand_object *obj_desc,
259 struct acpi_walk_state *walk_state)
261 char *pathname = NULL;
264 ACPI_FUNCTION_NAME(ex_stop_trace_method);
267 pathname = acpi_ns_get_normalized_pathname(method_node, TRUE);
270 enabled = acpi_ex_interpreter_trace_enabled(NULL);
273 ACPI_TRACE_POINT(ACPI_TRACE_AML_METHOD, FALSE,
274 obj_desc ? obj_desc->method.aml_start : NULL,
278 /* Check whether the tracer should be stopped */
280 if (acpi_gbl_trace_method_object == obj_desc) {
282 /* Disable further tracing if type is one-shot */
284 if (acpi_gbl_trace_flags & ACPI_TRACE_ONESHOT) {
285 acpi_gbl_trace_method_name = NULL;
288 acpi_dbg_level = acpi_gbl_original_dbg_level;
289 acpi_dbg_layer = acpi_gbl_original_dbg_layer;
290 acpi_gbl_trace_method_object = NULL;
298 /*******************************************************************************
300 * FUNCTION: acpi_ex_start_trace_opcode
302 * PARAMETERS: op - The parser opcode object
303 * walk_state - current state, NULL if not yet executing
308 * DESCRIPTION: Start opcode execution trace
310 ******************************************************************************/
313 acpi_ex_start_trace_opcode(union acpi_parse_object *op,
314 struct acpi_walk_state *walk_state)
317 ACPI_FUNCTION_NAME(ex_start_trace_opcode);
319 if (acpi_ex_interpreter_trace_enabled(NULL) &&
320 (acpi_gbl_trace_flags & ACPI_TRACE_OPCODE)) {
321 ACPI_TRACE_POINT(ACPI_TRACE_AML_OPCODE, TRUE,
322 op->common.aml, op->common.aml_op_name);
326 /*******************************************************************************
328 * FUNCTION: acpi_ex_stop_trace_opcode
330 * PARAMETERS: op - The parser opcode object
331 * walk_state - current state, NULL if not yet executing
336 * DESCRIPTION: Stop opcode execution trace
338 ******************************************************************************/
341 acpi_ex_stop_trace_opcode(union acpi_parse_object *op,
342 struct acpi_walk_state *walk_state)
345 ACPI_FUNCTION_NAME(ex_stop_trace_opcode);
347 if (acpi_ex_interpreter_trace_enabled(NULL) &&
348 (acpi_gbl_trace_flags & ACPI_TRACE_OPCODE)) {
349 ACPI_TRACE_POINT(ACPI_TRACE_AML_OPCODE, FALSE,
350 op->common.aml, op->common.aml_op_name);