PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / acpi / acpica / utdebug.c
blobd971c8631263b3dd8f0b9ec05269122b78c24391
1 /******************************************************************************
3 * Module Name: utdebug - Debug print/trace routines
5 *****************************************************************************/
7 /*
8 * Copyright (C) 2000 - 2013, Intel Corp.
9 * All rights reserved.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
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
28 * Software Foundation.
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
44 #define EXPORT_ACPI_INTERFACES
46 #include <acpi/acpi.h>
47 #include "accommon.h"
49 #define _COMPONENT ACPI_UTILITIES
50 ACPI_MODULE_NAME("utdebug")
52 #ifdef ACPI_DEBUG_OUTPUT
53 static acpi_thread_id acpi_gbl_prev_thread_id = (acpi_thread_id) 0xFFFFFFFF;
54 static char *acpi_gbl_fn_entry_str = "----Entry";
55 static char *acpi_gbl_fn_exit_str = "----Exit-";
57 /* Local prototypes */
59 static const char *acpi_ut_trim_function_name(const char *function_name);
61 /*******************************************************************************
63 * FUNCTION: acpi_ut_init_stack_ptr_trace
65 * PARAMETERS: None
67 * RETURN: None
69 * DESCRIPTION: Save the current CPU stack pointer at subsystem startup
71 ******************************************************************************/
73 void acpi_ut_init_stack_ptr_trace(void)
75 acpi_size current_sp;
77 acpi_gbl_entry_stack_pointer = &current_sp;
80 /*******************************************************************************
82 * FUNCTION: acpi_ut_track_stack_ptr
84 * PARAMETERS: None
86 * RETURN: None
88 * DESCRIPTION: Save the current CPU stack pointer
90 ******************************************************************************/
92 void acpi_ut_track_stack_ptr(void)
94 acpi_size current_sp;
96 if (&current_sp < acpi_gbl_lowest_stack_pointer) {
97 acpi_gbl_lowest_stack_pointer = &current_sp;
100 if (acpi_gbl_nesting_level > acpi_gbl_deepest_nesting) {
101 acpi_gbl_deepest_nesting = acpi_gbl_nesting_level;
105 /*******************************************************************************
107 * FUNCTION: acpi_ut_trim_function_name
109 * PARAMETERS: function_name - Ascii string containing a procedure name
111 * RETURN: Updated pointer to the function name
113 * DESCRIPTION: Remove the "Acpi" prefix from the function name, if present.
114 * This allows compiler macros such as __FUNCTION__ to be used
115 * with no change to the debug output.
117 ******************************************************************************/
119 static const char *acpi_ut_trim_function_name(const char *function_name)
122 /* All Function names are longer than 4 chars, check is safe */
124 if (*(ACPI_CAST_PTR(u32, function_name)) == ACPI_PREFIX_MIXED) {
126 /* This is the case where the original source has not been modified */
128 return (function_name + 4);
131 if (*(ACPI_CAST_PTR(u32, function_name)) == ACPI_PREFIX_LOWER) {
133 /* This is the case where the source has been 'linuxized' */
135 return (function_name + 5);
138 return (function_name);
141 /*******************************************************************************
143 * FUNCTION: acpi_debug_print
145 * PARAMETERS: requested_debug_level - Requested debug print level
146 * line_number - Caller's line number (for error output)
147 * function_name - Caller's procedure name
148 * module_name - Caller's module name
149 * component_id - Caller's component ID
150 * format - Printf format field
151 * ... - Optional printf arguments
153 * RETURN: None
155 * DESCRIPTION: Print error message with prefix consisting of the module name,
156 * line number, and component ID.
158 ******************************************************************************/
160 void ACPI_INTERNAL_VAR_XFACE
161 acpi_debug_print(u32 requested_debug_level,
162 u32 line_number,
163 const char *function_name,
164 const char *module_name,
165 u32 component_id, const char *format, ...)
167 acpi_thread_id thread_id;
168 va_list args;
170 /* Check if debug output enabled */
172 if (!ACPI_IS_DEBUG_ENABLED(requested_debug_level, component_id)) {
173 return;
177 * Thread tracking and context switch notification
179 thread_id = acpi_os_get_thread_id();
180 if (thread_id != acpi_gbl_prev_thread_id) {
181 if (ACPI_LV_THREADS & acpi_dbg_level) {
182 acpi_os_printf
183 ("\n**** Context Switch from TID %u to TID %u ****\n\n",
184 (u32)acpi_gbl_prev_thread_id, (u32)thread_id);
187 acpi_gbl_prev_thread_id = thread_id;
188 acpi_gbl_nesting_level = 0;
192 * Display the module name, current line number, thread ID (if requested),
193 * current procedure nesting level, and the current procedure name
195 acpi_os_printf("%9s-%04ld ", module_name, line_number);
197 #ifdef ACPI_APPLICATION
199 * For acpi_exec/iASL only, emit the thread ID and nesting level.
200 * Note: nesting level is really only useful during a single-thread
201 * execution. Otherwise, multiple threads will keep resetting the
202 * level.
204 if (ACPI_LV_THREADS & acpi_dbg_level) {
205 acpi_os_printf("[%u] ", (u32)thread_id);
208 acpi_os_printf("[%02ld] ", acpi_gbl_nesting_level);
209 #endif
211 acpi_os_printf("%-22.22s: ", acpi_ut_trim_function_name(function_name));
213 va_start(args, format);
214 acpi_os_vprintf(format, args);
215 va_end(args);
218 ACPI_EXPORT_SYMBOL(acpi_debug_print)
220 /*******************************************************************************
222 * FUNCTION: acpi_debug_print_raw
224 * PARAMETERS: requested_debug_level - Requested debug print level
225 * line_number - Caller's line number
226 * function_name - Caller's procedure name
227 * module_name - Caller's module name
228 * component_id - Caller's component ID
229 * format - Printf format field
230 * ... - Optional printf arguments
232 * RETURN: None
234 * DESCRIPTION: Print message with no headers. Has same interface as
235 * debug_print so that the same macros can be used.
237 ******************************************************************************/
238 void ACPI_INTERNAL_VAR_XFACE
239 acpi_debug_print_raw(u32 requested_debug_level,
240 u32 line_number,
241 const char *function_name,
242 const char *module_name,
243 u32 component_id, const char *format, ...)
245 va_list args;
247 /* Check if debug output enabled */
249 if (!ACPI_IS_DEBUG_ENABLED(requested_debug_level, component_id)) {
250 return;
253 va_start(args, format);
254 acpi_os_vprintf(format, args);
255 va_end(args);
258 ACPI_EXPORT_SYMBOL(acpi_debug_print_raw)
260 /*******************************************************************************
262 * FUNCTION: acpi_ut_trace
264 * PARAMETERS: line_number - Caller's line number
265 * function_name - Caller's procedure name
266 * module_name - Caller's module name
267 * component_id - Caller's component ID
269 * RETURN: None
271 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
272 * set in debug_level
274 ******************************************************************************/
275 void
276 acpi_ut_trace(u32 line_number,
277 const char *function_name,
278 const char *module_name, u32 component_id)
281 acpi_gbl_nesting_level++;
282 acpi_ut_track_stack_ptr();
284 /* Check if enabled up-front for performance */
286 if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
287 acpi_debug_print(ACPI_LV_FUNCTIONS,
288 line_number, function_name, module_name,
289 component_id, "%s\n", acpi_gbl_fn_entry_str);
293 ACPI_EXPORT_SYMBOL(acpi_ut_trace)
295 /*******************************************************************************
297 * FUNCTION: acpi_ut_trace_ptr
299 * PARAMETERS: line_number - Caller's line number
300 * function_name - Caller's procedure name
301 * module_name - Caller's module name
302 * component_id - Caller's component ID
303 * pointer - Pointer to display
305 * RETURN: None
307 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
308 * set in debug_level
310 ******************************************************************************/
311 void
312 acpi_ut_trace_ptr(u32 line_number,
313 const char *function_name,
314 const char *module_name, u32 component_id, void *pointer)
317 acpi_gbl_nesting_level++;
318 acpi_ut_track_stack_ptr();
320 /* Check if enabled up-front for performance */
322 if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
323 acpi_debug_print(ACPI_LV_FUNCTIONS,
324 line_number, function_name, module_name,
325 component_id, "%s %p\n", acpi_gbl_fn_entry_str,
326 pointer);
330 /*******************************************************************************
332 * FUNCTION: acpi_ut_trace_str
334 * PARAMETERS: line_number - Caller's line number
335 * function_name - Caller's procedure name
336 * module_name - Caller's module name
337 * component_id - Caller's component ID
338 * string - Additional string to display
340 * RETURN: None
342 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
343 * set in debug_level
345 ******************************************************************************/
347 void
348 acpi_ut_trace_str(u32 line_number,
349 const char *function_name,
350 const char *module_name, u32 component_id, char *string)
353 acpi_gbl_nesting_level++;
354 acpi_ut_track_stack_ptr();
356 /* Check if enabled up-front for performance */
358 if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
359 acpi_debug_print(ACPI_LV_FUNCTIONS,
360 line_number, function_name, module_name,
361 component_id, "%s %s\n", acpi_gbl_fn_entry_str,
362 string);
366 /*******************************************************************************
368 * FUNCTION: acpi_ut_trace_u32
370 * PARAMETERS: line_number - Caller's line number
371 * function_name - Caller's procedure name
372 * module_name - Caller's module name
373 * component_id - Caller's component ID
374 * integer - Integer to display
376 * RETURN: None
378 * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is
379 * set in debug_level
381 ******************************************************************************/
383 void
384 acpi_ut_trace_u32(u32 line_number,
385 const char *function_name,
386 const char *module_name, u32 component_id, u32 integer)
389 acpi_gbl_nesting_level++;
390 acpi_ut_track_stack_ptr();
392 /* Check if enabled up-front for performance */
394 if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
395 acpi_debug_print(ACPI_LV_FUNCTIONS,
396 line_number, function_name, module_name,
397 component_id, "%s %08X\n",
398 acpi_gbl_fn_entry_str, integer);
402 /*******************************************************************************
404 * FUNCTION: acpi_ut_exit
406 * PARAMETERS: line_number - Caller's line number
407 * function_name - Caller's procedure name
408 * module_name - Caller's module name
409 * component_id - Caller's component ID
411 * RETURN: None
413 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
414 * set in debug_level
416 ******************************************************************************/
418 void
419 acpi_ut_exit(u32 line_number,
420 const char *function_name,
421 const char *module_name, u32 component_id)
424 /* Check if enabled up-front for performance */
426 if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
427 acpi_debug_print(ACPI_LV_FUNCTIONS,
428 line_number, function_name, module_name,
429 component_id, "%s\n", acpi_gbl_fn_exit_str);
432 if (acpi_gbl_nesting_level) {
433 acpi_gbl_nesting_level--;
437 ACPI_EXPORT_SYMBOL(acpi_ut_exit)
439 /*******************************************************************************
441 * FUNCTION: acpi_ut_status_exit
443 * PARAMETERS: line_number - Caller's line number
444 * function_name - Caller's procedure name
445 * module_name - Caller's module name
446 * component_id - Caller's component ID
447 * status - Exit status code
449 * RETURN: None
451 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
452 * set in debug_level. Prints exit status also.
454 ******************************************************************************/
455 void
456 acpi_ut_status_exit(u32 line_number,
457 const char *function_name,
458 const char *module_name,
459 u32 component_id, acpi_status status)
462 /* Check if enabled up-front for performance */
464 if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
465 if (ACPI_SUCCESS(status)) {
466 acpi_debug_print(ACPI_LV_FUNCTIONS,
467 line_number, function_name,
468 module_name, component_id, "%s %s\n",
469 acpi_gbl_fn_exit_str,
470 acpi_format_exception(status));
471 } else {
472 acpi_debug_print(ACPI_LV_FUNCTIONS,
473 line_number, function_name,
474 module_name, component_id,
475 "%s ****Exception****: %s\n",
476 acpi_gbl_fn_exit_str,
477 acpi_format_exception(status));
481 if (acpi_gbl_nesting_level) {
482 acpi_gbl_nesting_level--;
486 ACPI_EXPORT_SYMBOL(acpi_ut_status_exit)
488 /*******************************************************************************
490 * FUNCTION: acpi_ut_value_exit
492 * PARAMETERS: line_number - Caller's line number
493 * function_name - Caller's procedure name
494 * module_name - Caller's module name
495 * component_id - Caller's component ID
496 * value - Value to be printed with exit msg
498 * RETURN: None
500 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
501 * set in debug_level. Prints exit value also.
503 ******************************************************************************/
504 void
505 acpi_ut_value_exit(u32 line_number,
506 const char *function_name,
507 const char *module_name, u32 component_id, u64 value)
510 /* Check if enabled up-front for performance */
512 if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
513 acpi_debug_print(ACPI_LV_FUNCTIONS,
514 line_number, function_name, module_name,
515 component_id, "%s %8.8X%8.8X\n",
516 acpi_gbl_fn_exit_str,
517 ACPI_FORMAT_UINT64(value));
520 if (acpi_gbl_nesting_level) {
521 acpi_gbl_nesting_level--;
525 ACPI_EXPORT_SYMBOL(acpi_ut_value_exit)
527 /*******************************************************************************
529 * FUNCTION: acpi_ut_ptr_exit
531 * PARAMETERS: line_number - Caller's line number
532 * function_name - Caller's procedure name
533 * module_name - Caller's module name
534 * component_id - Caller's component ID
535 * ptr - Pointer to display
537 * RETURN: None
539 * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is
540 * set in debug_level. Prints exit value also.
542 ******************************************************************************/
543 void
544 acpi_ut_ptr_exit(u32 line_number,
545 const char *function_name,
546 const char *module_name, u32 component_id, u8 *ptr)
549 /* Check if enabled up-front for performance */
551 if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) {
552 acpi_debug_print(ACPI_LV_FUNCTIONS,
553 line_number, function_name, module_name,
554 component_id, "%s %p\n", acpi_gbl_fn_exit_str,
555 ptr);
558 if (acpi_gbl_nesting_level) {
559 acpi_gbl_nesting_level--;
563 #endif