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d042c6e8 | 1 | /** @file\r |
2 | Performance Library used in SMM phase.\r | |
3 | \r | |
4 | This library instance provides infrastructure for SMM drivers to log performance\r | |
f0da4d7d SZ |
5 | data. It consumes SMM PerformanceEx or Performance Protocol published by SmmCorePerformanceLib\r |
6 | to log performance data. If both SMM PerformanceEx and Performance Protocol are not available, it does not log any\r | |
d042c6e8 | 7 | performance information.\r |
8 | \r | |
3dffec12 | 9 | Copyright (c) 2011 - 2012, Intel Corporation. All rights reserved.<BR>\r |
d042c6e8 | 10 | This program and the accompanying materials\r |
11 | are licensed and made available under the terms and conditions of the BSD License\r | |
12 | which accompanies this distribution. The full text of the license may be found at\r | |
13 | http://opensource.org/licenses/bsd-license.php\r | |
14 | \r | |
15 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
16 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
17 | \r | |
18 | **/\r | |
19 | \r | |
20 | \r | |
21 | #include <Guid/Performance.h>\r | |
22 | \r | |
23 | #include <Library/PerformanceLib.h>\r | |
24 | #include <Library/DebugLib.h>\r | |
25 | #include <Library/SmmServicesTableLib.h>\r | |
26 | #include <Library/PcdLib.h>\r | |
27 | #include <Library/BaseMemoryLib.h>\r | |
28 | \r | |
d042c6e8 | 29 | //\r |
f0da4d7d | 30 | // The cached SMM Performance Protocol and SMM PerformanceEx Protocol interface.\r |
d042c6e8 | 31 | //\r |
f0da4d7d SZ |
32 | PERFORMANCE_PROTOCOL *mPerformance = NULL;\r |
33 | PERFORMANCE_EX_PROTOCOL *mPerformanceEx = NULL;\r | |
34 | BOOLEAN mPerformanceMeasurementEnabled;\r | |
d042c6e8 | 35 | \r |
36 | /**\r | |
f0da4d7d | 37 | The constructor function initializes the Performance Measurement Enable flag\r |
d042c6e8 | 38 | \r |
39 | @param ImageHandle The firmware allocated handle for the EFI image.\r | |
40 | @param SystemTable A pointer to the EFI System Table.\r | |
41 | \r | |
42 | @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.\r | |
43 | \r | |
44 | **/\r | |
45 | EFI_STATUS\r | |
46 | EFIAPI\r | |
47 | SmmPerformanceLibConstructor (\r | |
48 | IN EFI_HANDLE ImageHandle,\r | |
49 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
50 | )\r | |
51 | {\r | |
52 | \r | |
53 | mPerformanceMeasurementEnabled = (BOOLEAN) ((PcdGet8(PcdPerformanceLibraryPropertyMask) & PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED) != 0);\r | |
54 | \r | |
55 | return EFI_SUCCESS;\r | |
56 | }\r | |
57 | \r | |
58 | /**\r | |
f0da4d7d | 59 | The function caches the pointers to SMM PerformanceEx protocol and Performance Protocol.\r |
d042c6e8 | 60 | \r |
f0da4d7d | 61 | The function locates SMM PerformanceEx protocol and Performance Protocol from protocol database.\r |
d042c6e8 | 62 | \r |
f0da4d7d SZ |
63 | @retval EFI_SUCCESS SMM PerformanceEx protocol or Performance Protocol is successfully located.\r |
64 | @retval EFI_NOT_FOUND Both SMM PerformanceEx protocol and Performance Protocol are not located to log performance.\r | |
d042c6e8 | 65 | \r |
66 | **/\r | |
67 | EFI_STATUS\r | |
68 | GetPerformanceProtocol (\r | |
69 | VOID\r | |
70 | )\r | |
71 | {\r | |
f0da4d7d SZ |
72 | EFI_STATUS Status;\r |
73 | PERFORMANCE_PROTOCOL *Performance;\r | |
74 | PERFORMANCE_EX_PROTOCOL *PerformanceEx;\r | |
d042c6e8 | 75 | \r |
f0da4d7d SZ |
76 | if (mPerformanceEx != NULL || mPerformance != NULL) {\r |
77 | return EFI_SUCCESS;\r | |
78 | }\r | |
79 | \r | |
80 | Status = gSmst->SmmLocateProtocol (&gSmmPerformanceExProtocolGuid, NULL, (VOID **) &PerformanceEx);\r | |
81 | if (!EFI_ERROR (Status)) {\r | |
82 | ASSERT (PerformanceEx != NULL);\r | |
83 | //\r | |
84 | // Cache PerformanceEx Protocol.\r | |
85 | //\r | |
86 | mPerformanceEx = PerformanceEx;\r | |
d042c6e8 | 87 | return EFI_SUCCESS;\r |
88 | }\r | |
89 | \r | |
90 | Status = gSmst->SmmLocateProtocol (&gSmmPerformanceProtocolGuid, NULL, (VOID **) &Performance);\r | |
91 | if (!EFI_ERROR (Status)) {\r | |
92 | ASSERT (Performance != NULL);\r | |
93 | //\r | |
94 | // Cache performance protocol.\r | |
95 | //\r | |
96 | mPerformance = Performance;\r | |
f0da4d7d | 97 | return EFI_SUCCESS;\r |
d042c6e8 | 98 | }\r |
99 | \r | |
f0da4d7d | 100 | return EFI_NOT_FOUND;\r |
d042c6e8 | 101 | }\r |
102 | \r | |
103 | /**\r | |
104 | Creates a record for the beginning of a performance measurement.\r | |
105 | \r | |
f0da4d7d | 106 | Creates a record that contains the Handle, Token, Module and Identifier.\r |
d042c6e8 | 107 | If TimeStamp is not zero, then TimeStamp is added to the record as the start time.\r |
108 | If TimeStamp is zero, then this function reads the current time stamp\r | |
109 | and adds that time stamp value to the record as the start time.\r | |
110 | \r | |
111 | @param Handle Pointer to environment specific context used\r | |
112 | to identify the component being measured.\r | |
113 | @param Token Pointer to a Null-terminated ASCII string\r | |
114 | that identifies the component being measured.\r | |
115 | @param Module Pointer to a Null-terminated ASCII string\r | |
116 | that identifies the module being measured.\r | |
117 | @param TimeStamp 64-bit time stamp.\r | |
f0da4d7d SZ |
118 | @param Identifier 32-bit identifier. If the value is 0, the created record\r |
119 | is same as the one created by StartPerformanceMeasurement.\r | |
d042c6e8 | 120 | \r |
121 | @retval RETURN_SUCCESS The start of the measurement was recorded.\r | |
122 | @retval RETURN_OUT_OF_RESOURCES There are not enough resources to record the measurement.\r | |
123 | \r | |
124 | **/\r | |
125 | RETURN_STATUS\r | |
126 | EFIAPI\r | |
f0da4d7d | 127 | StartPerformanceMeasurementEx (\r |
d042c6e8 | 128 | IN CONST VOID *Handle, OPTIONAL\r |
129 | IN CONST CHAR8 *Token, OPTIONAL\r | |
130 | IN CONST CHAR8 *Module, OPTIONAL\r | |
f0da4d7d SZ |
131 | IN UINT64 TimeStamp,\r |
132 | IN UINT32 Identifier\r | |
d042c6e8 | 133 | )\r |
134 | {\r | |
135 | EFI_STATUS Status;\r | |
136 | \r | |
137 | Status = GetPerformanceProtocol ();\r | |
138 | if (EFI_ERROR (Status)) {\r | |
139 | return RETURN_OUT_OF_RESOURCES;\r | |
140 | }\r | |
141 | \r | |
f0da4d7d SZ |
142 | if (mPerformanceEx != NULL) {\r |
143 | Status = mPerformanceEx->StartGaugeEx (Handle, Token, Module, TimeStamp, Identifier);\r | |
144 | } else if (mPerformance != NULL) {\r | |
145 | Status = mPerformance->StartGauge (Handle, Token, Module, TimeStamp);\r | |
146 | } else {\r | |
147 | ASSERT (FALSE);\r | |
148 | }\r | |
d042c6e8 | 149 | \r |
150 | return (RETURN_STATUS) Status;\r | |
151 | }\r | |
152 | \r | |
153 | /**\r | |
154 | Fills in the end time of a performance measurement.\r | |
155 | \r | |
f0da4d7d | 156 | Looks up the record that matches Handle, Token, Module and Identifier.\r |
d042c6e8 | 157 | If the record can not be found then return RETURN_NOT_FOUND.\r |
158 | If the record is found and TimeStamp is not zero,\r | |
159 | then TimeStamp is added to the record as the end time.\r | |
160 | If the record is found and TimeStamp is zero, then this function reads\r | |
161 | the current time stamp and adds that time stamp value to the record as the end time.\r | |
d042c6e8 | 162 | \r |
163 | @param Handle Pointer to environment specific context used\r | |
164 | to identify the component being measured.\r | |
165 | @param Token Pointer to a Null-terminated ASCII string\r | |
166 | that identifies the component being measured.\r | |
167 | @param Module Pointer to a Null-terminated ASCII string\r | |
168 | that identifies the module being measured.\r | |
169 | @param TimeStamp 64-bit time stamp.\r | |
f0da4d7d SZ |
170 | @param Identifier 32-bit identifier. If the value is 0, the found record\r |
171 | is same as the one found by EndPerformanceMeasurement.\r | |
d042c6e8 | 172 | \r |
173 | @retval RETURN_SUCCESS The end of the measurement was recorded.\r | |
174 | @retval RETURN_NOT_FOUND The specified measurement record could not be found.\r | |
175 | \r | |
176 | **/\r | |
177 | RETURN_STATUS\r | |
178 | EFIAPI\r | |
f0da4d7d | 179 | EndPerformanceMeasurementEx (\r |
d042c6e8 | 180 | IN CONST VOID *Handle, OPTIONAL\r |
181 | IN CONST CHAR8 *Token, OPTIONAL\r | |
182 | IN CONST CHAR8 *Module, OPTIONAL\r | |
f0da4d7d SZ |
183 | IN UINT64 TimeStamp,\r |
184 | IN UINT32 Identifier\r | |
d042c6e8 | 185 | )\r |
186 | {\r | |
187 | EFI_STATUS Status;\r | |
188 | \r | |
189 | Status = GetPerformanceProtocol ();\r | |
190 | if (EFI_ERROR (Status)) {\r | |
191 | return RETURN_NOT_FOUND;\r | |
192 | }\r | |
193 | \r | |
f0da4d7d SZ |
194 | if (mPerformanceEx != NULL) {\r |
195 | Status = mPerformanceEx->EndGaugeEx (Handle, Token, Module, TimeStamp, Identifier);\r | |
196 | } else if (mPerformance != NULL) {\r | |
197 | Status = mPerformance->EndGauge (Handle, Token, Module, TimeStamp);\r | |
198 | } else {\r | |
199 | ASSERT (FALSE);\r | |
200 | }\r | |
d042c6e8 | 201 | \r |
202 | return (RETURN_STATUS) Status;\r | |
203 | }\r | |
204 | \r | |
205 | /**\r | |
206 | Attempts to retrieve a performance measurement log entry from the performance measurement log.\r | |
f0da4d7d SZ |
207 | It can also retrieve the log created by StartPerformanceMeasurement and EndPerformanceMeasurement,\r |
208 | and then assign the Identifier with 0.\r | |
d042c6e8 | 209 | \r |
210 | Attempts to retrieve the performance log entry specified by LogEntryKey. If LogEntryKey is\r | |
211 | zero on entry, then an attempt is made to retrieve the first entry from the performance log,\r | |
212 | and the key for the second entry in the log is returned. If the performance log is empty,\r | |
213 | then no entry is retrieved and zero is returned. If LogEntryKey is not zero, then the performance\r | |
214 | log entry associated with LogEntryKey is retrieved, and the key for the next entry in the log is\r | |
215 | returned. If LogEntryKey is the key for the last entry in the log, then the last log entry is\r | |
216 | retrieved and an implementation specific non-zero key value that specifies the end of the performance\r | |
217 | log is returned. If LogEntryKey is equal this implementation specific non-zero key value, then no entry\r | |
218 | is retrieved and zero is returned. In the cases where a performance log entry can be returned,\r | |
f0da4d7d | 219 | the log entry is returned in Handle, Token, Module, StartTimeStamp, EndTimeStamp and Identifier.\r |
d042c6e8 | 220 | If LogEntryKey is not a valid log entry key for the performance measurement log, then ASSERT().\r |
221 | If Handle is NULL, then ASSERT().\r | |
222 | If Token is NULL, then ASSERT().\r | |
223 | If Module is NULL, then ASSERT().\r | |
224 | If StartTimeStamp is NULL, then ASSERT().\r | |
225 | If EndTimeStamp is NULL, then ASSERT().\r | |
f0da4d7d | 226 | If Identifier is NULL, then ASSERT().\r |
d042c6e8 | 227 | \r |
228 | @param LogEntryKey On entry, the key of the performance measurement log entry to retrieve.\r | |
229 | 0, then the first performance measurement log entry is retrieved.\r | |
230 | On exit, the key of the next performance log entry.\r | |
231 | @param Handle Pointer to environment specific context used to identify the component\r | |
232 | being measured.\r | |
233 | @param Token Pointer to a Null-terminated ASCII string that identifies the component\r | |
234 | being measured.\r | |
235 | @param Module Pointer to a Null-terminated ASCII string that identifies the module\r | |
236 | being measured.\r | |
237 | @param StartTimeStamp Pointer to the 64-bit time stamp that was recorded when the measurement\r | |
238 | was started.\r | |
239 | @param EndTimeStamp Pointer to the 64-bit time stamp that was recorded when the measurement\r | |
240 | was ended.\r | |
f0da4d7d | 241 | @param Identifier Pointer to the 32-bit identifier that was recorded.\r |
d042c6e8 | 242 | \r |
243 | @return The key for the next performance log entry (in general case).\r | |
244 | \r | |
245 | **/\r | |
246 | UINTN\r | |
247 | EFIAPI\r | |
f0da4d7d SZ |
248 | GetPerformanceMeasurementEx (\r |
249 | IN UINTN LogEntryKey, \r | |
d042c6e8 | 250 | OUT CONST VOID **Handle,\r |
251 | OUT CONST CHAR8 **Token,\r | |
252 | OUT CONST CHAR8 **Module,\r | |
253 | OUT UINT64 *StartTimeStamp,\r | |
f0da4d7d SZ |
254 | OUT UINT64 *EndTimeStamp,\r |
255 | OUT UINT32 *Identifier\r | |
d042c6e8 | 256 | )\r |
257 | {\r | |
f0da4d7d SZ |
258 | EFI_STATUS Status;\r |
259 | GAUGE_DATA_ENTRY_EX *GaugeData;\r | |
260 | \r | |
d042c6e8 | 261 | GaugeData = NULL;\r |
262 | \r | |
263 | ASSERT (Handle != NULL);\r | |
264 | ASSERT (Token != NULL);\r | |
265 | ASSERT (Module != NULL);\r | |
266 | ASSERT (StartTimeStamp != NULL);\r | |
267 | ASSERT (EndTimeStamp != NULL);\r | |
f0da4d7d | 268 | ASSERT (Identifier != NULL);\r |
d042c6e8 | 269 | \r |
270 | Status = GetPerformanceProtocol ();\r | |
271 | if (EFI_ERROR (Status)) {\r | |
272 | return 0;\r | |
273 | }\r | |
274 | \r | |
f0da4d7d SZ |
275 | if (mPerformanceEx != NULL) {\r |
276 | Status = mPerformanceEx->GetGaugeEx (LogEntryKey++, &GaugeData);\r | |
277 | } else if (mPerformance != NULL) {\r | |
278 | Status = mPerformance->GetGauge (LogEntryKey++, (GAUGE_DATA_ENTRY **) &GaugeData);\r | |
279 | } else {\r | |
280 | ASSERT (FALSE);\r | |
281 | return 0;\r | |
282 | }\r | |
d042c6e8 | 283 | \r |
284 | //\r | |
285 | // Make sure that LogEntryKey is a valid log entry key,\r | |
286 | //\r | |
287 | ASSERT (Status != EFI_INVALID_PARAMETER);\r | |
288 | \r | |
289 | if (EFI_ERROR (Status)) {\r | |
290 | //\r | |
291 | // The LogEntryKey is the last entry (equals to the total entry number).\r | |
292 | //\r | |
293 | return 0;\r | |
294 | }\r | |
295 | \r | |
296 | ASSERT (GaugeData != NULL);\r | |
297 | \r | |
298 | *Handle = (VOID *) (UINTN) GaugeData->Handle;\r | |
299 | *Token = GaugeData->Token;\r | |
300 | *Module = GaugeData->Module;\r | |
301 | *StartTimeStamp = GaugeData->StartTimeStamp;\r | |
302 | *EndTimeStamp = GaugeData->EndTimeStamp;\r | |
f0da4d7d SZ |
303 | if (mPerformanceEx != NULL) {\r |
304 | *Identifier = GaugeData->Identifier;\r | |
305 | } else {\r | |
306 | *Identifier = 0;\r | |
307 | }\r | |
d042c6e8 | 308 | \r |
ae373a56 | 309 | return LogEntryKey;\r |
d042c6e8 | 310 | }\r |
311 | \r | |
f0da4d7d SZ |
312 | /**\r |
313 | Creates a record for the beginning of a performance measurement.\r | |
314 | \r | |
315 | Creates a record that contains the Handle, Token, and Module.\r | |
316 | If TimeStamp is not zero, then TimeStamp is added to the record as the start time.\r | |
317 | If TimeStamp is zero, then this function reads the current time stamp\r | |
318 | and adds that time stamp value to the record as the start time.\r | |
319 | \r | |
320 | @param Handle Pointer to environment specific context used\r | |
321 | to identify the component being measured.\r | |
322 | @param Token Pointer to a Null-terminated ASCII string\r | |
323 | that identifies the component being measured.\r | |
324 | @param Module Pointer to a Null-terminated ASCII string\r | |
325 | that identifies the module being measured.\r | |
326 | @param TimeStamp 64-bit time stamp.\r | |
327 | \r | |
328 | @retval RETURN_SUCCESS The start of the measurement was recorded.\r | |
329 | @retval RETURN_OUT_OF_RESOURCES There are not enough resources to record the measurement.\r | |
330 | \r | |
331 | **/\r | |
332 | RETURN_STATUS\r | |
333 | EFIAPI\r | |
334 | StartPerformanceMeasurement (\r | |
335 | IN CONST VOID *Handle, OPTIONAL\r | |
336 | IN CONST CHAR8 *Token, OPTIONAL\r | |
337 | IN CONST CHAR8 *Module, OPTIONAL\r | |
338 | IN UINT64 TimeStamp\r | |
339 | )\r | |
340 | {\r | |
341 | return StartPerformanceMeasurementEx (Handle, Token, Module, TimeStamp, 0);\r | |
342 | }\r | |
343 | \r | |
344 | /**\r | |
345 | Fills in the end time of a performance measurement.\r | |
346 | \r | |
347 | Looks up the record that matches Handle, Token, and Module.\r | |
348 | If the record can not be found then return RETURN_NOT_FOUND.\r | |
349 | If the record is found and TimeStamp is not zero,\r | |
350 | then TimeStamp is added to the record as the end time.\r | |
351 | If the record is found and TimeStamp is zero, then this function reads\r | |
352 | the current time stamp and adds that time stamp value to the record as the end time.\r | |
353 | \r | |
354 | @param Handle Pointer to environment specific context used\r | |
355 | to identify the component being measured.\r | |
356 | @param Token Pointer to a Null-terminated ASCII string\r | |
357 | that identifies the component being measured.\r | |
358 | @param Module Pointer to a Null-terminated ASCII string\r | |
359 | that identifies the module being measured.\r | |
360 | @param TimeStamp 64-bit time stamp.\r | |
361 | \r | |
362 | @retval RETURN_SUCCESS The end of the measurement was recorded.\r | |
363 | @retval RETURN_NOT_FOUND The specified measurement record could not be found.\r | |
364 | \r | |
365 | **/\r | |
366 | RETURN_STATUS\r | |
367 | EFIAPI\r | |
368 | EndPerformanceMeasurement (\r | |
369 | IN CONST VOID *Handle, OPTIONAL\r | |
370 | IN CONST CHAR8 *Token, OPTIONAL\r | |
371 | IN CONST CHAR8 *Module, OPTIONAL\r | |
372 | IN UINT64 TimeStamp\r | |
373 | )\r | |
374 | {\r | |
375 | return EndPerformanceMeasurementEx (Handle, Token, Module, TimeStamp, 0);\r | |
376 | }\r | |
377 | \r | |
378 | /**\r | |
379 | Attempts to retrieve a performance measurement log entry from the performance measurement log.\r | |
380 | It can also retrieve the log created by StartPerformanceMeasurementEx and EndPerformanceMeasurementEx,\r | |
381 | and then eliminate the Identifier.\r | |
382 | \r | |
383 | Attempts to retrieve the performance log entry specified by LogEntryKey. If LogEntryKey is\r | |
384 | zero on entry, then an attempt is made to retrieve the first entry from the performance log,\r | |
385 | and the key for the second entry in the log is returned. If the performance log is empty,\r | |
386 | then no entry is retrieved and zero is returned. If LogEntryKey is not zero, then the performance\r | |
387 | log entry associated with LogEntryKey is retrieved, and the key for the next entry in the log is\r | |
388 | returned. If LogEntryKey is the key for the last entry in the log, then the last log entry is\r | |
389 | retrieved and an implementation specific non-zero key value that specifies the end of the performance\r | |
390 | log is returned. If LogEntryKey is equal this implementation specific non-zero key value, then no entry\r | |
391 | is retrieved and zero is returned. In the cases where a performance log entry can be returned,\r | |
392 | the log entry is returned in Handle, Token, Module, StartTimeStamp, and EndTimeStamp.\r | |
393 | If LogEntryKey is not a valid log entry key for the performance measurement log, then ASSERT().\r | |
394 | If Handle is NULL, then ASSERT().\r | |
395 | If Token is NULL, then ASSERT().\r | |
396 | If Module is NULL, then ASSERT().\r | |
397 | If StartTimeStamp is NULL, then ASSERT().\r | |
398 | If EndTimeStamp is NULL, then ASSERT().\r | |
399 | \r | |
400 | @param LogEntryKey On entry, the key of the performance measurement log entry to retrieve.\r | |
401 | 0, then the first performance measurement log entry is retrieved.\r | |
402 | On exit, the key of the next performance log entry.\r | |
403 | @param Handle Pointer to environment specific context used to identify the component\r | |
404 | being measured.\r | |
405 | @param Token Pointer to a Null-terminated ASCII string that identifies the component\r | |
406 | being measured.\r | |
407 | @param Module Pointer to a Null-terminated ASCII string that identifies the module\r | |
408 | being measured.\r | |
409 | @param StartTimeStamp Pointer to the 64-bit time stamp that was recorded when the measurement\r | |
410 | was started.\r | |
411 | @param EndTimeStamp Pointer to the 64-bit time stamp that was recorded when the measurement\r | |
412 | was ended.\r | |
413 | \r | |
414 | @return The key for the next performance log entry (in general case).\r | |
415 | \r | |
416 | **/\r | |
417 | UINTN\r | |
418 | EFIAPI\r | |
419 | GetPerformanceMeasurement (\r | |
420 | IN UINTN LogEntryKey,\r | |
421 | OUT CONST VOID **Handle,\r | |
422 | OUT CONST CHAR8 **Token,\r | |
423 | OUT CONST CHAR8 **Module,\r | |
424 | OUT UINT64 *StartTimeStamp,\r | |
425 | OUT UINT64 *EndTimeStamp\r | |
426 | )\r | |
427 | {\r | |
428 | UINT32 Identifier;\r | |
429 | return GetPerformanceMeasurementEx (LogEntryKey, Handle, Token, Module, StartTimeStamp, EndTimeStamp, &Identifier);\r | |
430 | }\r | |
431 | \r | |
d042c6e8 | 432 | /**\r |
433 | Returns TRUE if the performance measurement macros are enabled.\r | |
434 | \r | |
435 | This function returns TRUE if the PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r | |
436 | PcdPerformanceLibraryPropertyMask is set. Otherwise FALSE is returned.\r | |
437 | \r | |
438 | @retval TRUE The PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r | |
439 | PcdPerformanceLibraryPropertyMask is set.\r | |
440 | @retval FALSE The PERFORMANCE_LIBRARY_PROPERTY_MEASUREMENT_ENABLED bit of\r | |
441 | PcdPerformanceLibraryPropertyMask is clear.\r | |
442 | \r | |
443 | **/\r | |
444 | BOOLEAN\r | |
445 | EFIAPI\r | |
446 | PerformanceMeasurementEnabled (\r | |
447 | VOID\r | |
448 | )\r | |
449 | {\r | |
450 | return mPerformanceMeasurementEnabled;\r | |
451 | }\r |