요약·해설과 원문, 전문 번역을 서로 분리했습니다. API 이름, symbol, source path는 원문 표기를 사용합니다.
1. 요약·해설
원문의 핵심 논리와 kernel programming 관점의 보충 설명입니다. 아래의 전문 번역과는 별도로 작성했습니다.
Counter와 context ID selectors
sysfs-bus-coresight-devices-etm3x:61-113cntr_idx는 event·value·reload value·reload event register를, ctxid_idx는 context comparator PID를 선택하며 mask는 모든 context ID comparators에 적용됩니다.
Trace events, mode, capabilities와 reset
sysfs-bus-coresight-devices-etm3x:115-171Enable event, ETM status, FIFO threshold와 driver-specific mode를 제어하고 ETMCCR fields에서 comparator·counter 수를 읽으며 reset은 boot configuration으로 되돌립니다.
Three-state trace sequencer
sysfs-bus-coresight-devices-etm3x:173-219seq_12·13·21·23·31·32_event가 states 1·2·3 사이의 모든 directed transitions를 정의하고 curr_seq_state가 current state를 제공합니다.
Synchronization, timestamps, trace identity와 CPU
sysfs-bus-coresight-devices-etm3x:221-258sync frequency, timestamp insertion event, stream trace ID, trigger event, tracer CPU affinity와 hardware context label을 제공합니다.
ETM management register views
sysfs-bus-coresight-devices-etm3x:260-328mgmt files는 ETM configuration, system configuration, ID, control, trace ID, enable event, start/stop과 enable-control registers를 exact hardware offsets에서 직접 읽습니다.
2. 영어 원문 전체
번역 기준이 된 Linux v6.18.37 원문입니다. 줄 번호는 이 버전의 파일 좌표입니다.
원문 전체 펼치기
1
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/enable_source
2
Date: November 2014
3
KernelVersion: 3.19
4
Contact: Mathieu Poirier <[email protected]>
5
Description: (RW) Enable/disable tracing on this specific trace entiry.
6
Enabling a source implies the source has been configured
7
properly and a sink has been identidifed for it. The path
8
of coresight components linking the source to the sink is
9
configured and managed automatically by the coresight framework.
11
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/addr_idx
12
Date: November 2014
13
KernelVersion: 3.19
14
Contact: Mathieu Poirier <[email protected]>
15
Description: Select which address comparator or pair (of comparators) to
16
work with.
18
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/addr_acctype
19
Date: November 2014
20
KernelVersion: 3.19
21
Contact: Mathieu Poirier <[email protected]>
22
Description: (RW) Used in conjunction with @addr_idx. Specifies
23
characteristics about the address comparator being configure,
24
for example the access type, the kind of instruction to trace,
25
processor context ID to trigger on, etc. Individual fields in
26
the access type register may vary on the version of the trace
27
entity.
29
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/addr_range
30
Date: November 2014
31
KernelVersion: 3.19
32
Contact: Mathieu Poirier <[email protected]>
33
Description: (RW) Used in conjunction with @addr_idx. Specifies the range of
34
addresses to trigger on. Inclusion or exclusion is specified
35
in the corresponding access type register.
37
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/addr_single
38
Date: November 2014
39
KernelVersion: 3.19
40
Contact: Mathieu Poirier <[email protected]>
41
Description: (RW) Used in conjunction with @addr_idx. Specifies the single
42
address to trigger on, highly influenced by the configuration
43
options of the corresponding access type register.
45
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/addr_start
46
Date: November 2014
47
KernelVersion: 3.19
48
Contact: Mathieu Poirier <[email protected]>
49
Description: (RW) Used in conjunction with @addr_idx. Specifies the single
50
address to start tracing on, highly influenced by the
51
configuration options of the corresponding access type register.
53
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/addr_stop
54
Date: November 2014
55
KernelVersion: 3.19
56
Contact: Mathieu Poirier <[email protected]>
57
Description: (RW) Used in conjunction with @addr_idx. Specifies the single
58
address to stop tracing on, highly influenced by the
59
configuration options of the corresponding access type register.
61
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/cntr_idx
62
Date: November 2014
63
KernelVersion: 3.19
64
Contact: Mathieu Poirier <[email protected]>
65
Description: (RW) Specifies the counter to work on.
67
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/cntr_event
68
Date: November 2014
69
KernelVersion: 3.19
70
Contact: Mathieu Poirier <[email protected]>
71
Description: (RW) Used in conjunction with cntr_idx, give access to the
72
counter event register.
74
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/cntr_val
75
Date: November 2014
76
KernelVersion: 3.19
77
Contact: Mathieu Poirier <[email protected]>
78
Description: (RW) Used in conjunction with cntr_idx, give access to the
79
counter value register.
81
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/cntr_rld_val
82
Date: November 2014
83
KernelVersion: 3.19
84
Contact: Mathieu Poirier <[email protected]>
85
Description: (RW) Used in conjunction with cntr_idx, give access to the
86
counter reload value register.
88
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/cntr_rld_event
89
Date: November 2014
90
KernelVersion: 3.19
91
Contact: Mathieu Poirier <[email protected]>
92
Description: (RW) Used in conjunction with cntr_idx, give access to the
93
counter reload event register.
95
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/ctxid_idx
96
Date: November 2014
97
KernelVersion: 3.19
98
Contact: Mathieu Poirier <[email protected]>
99
Description: (RW) Specifies the index of the context ID register to be
100
selected.
102
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/ctxid_mask
103
Date: November 2014
104
KernelVersion: 3.19
105
Contact: Mathieu Poirier <[email protected]>
106
Description: (RW) Mask to apply to all the context ID comparator.
108
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/ctxid_pid
109
Date: November 2014
110
KernelVersion: 3.19
111
Contact: Mathieu Poirier <[email protected]>
112
Description: (RW) Used with the ctxid_idx, specify with context ID to trigger
113
on.
115
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/enable_event
116
Date: November 2014
117
KernelVersion: 3.19
118
Contact: Mathieu Poirier <[email protected]>
119
Description: (RW) Defines which event triggers a trace.
121
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/etmsr
122
Date: November 2014
123
KernelVersion: 3.19
124
Contact: Mathieu Poirier <[email protected]>
125
Description: (RW) Gives access to the ETM status register, which holds
126
programming information and status on certains events.
128
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/fifofull_level
129
Date: November 2014
130
KernelVersion: 3.19
131
Contact: Mathieu Poirier <[email protected]>
132
Description: (RW) Number of byte left in the fifo before considering it full.
133
Depending on the tracer's version, can also hold threshold for
134
data suppression.
136
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/mode
137
Date: November 2014
138
KernelVersion: 3.19
139
Contact: Mathieu Poirier <[email protected]>
140
Description: (RW) Interface with the driver's 'mode' field, controlling
141
various aspect of the trace entity such as time stamping,
142
context ID size and cycle accurate tracing. Driver specific
143
and bound to change depending on the driver.
145
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/nr_addr_cmp
146
Date: November 2014
147
KernelVersion: 3.19
148
Contact: Mathieu Poirier <[email protected]>
149
Description: (Read) Provides the number of address comparators pairs accessible
150
on a trace unit, as specified by bit 3:0 of register ETMCCR.
152
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/nr_cntr
153
Date: November 2014
154
KernelVersion: 3.19
155
Contact: Mathieu Poirier <[email protected]>
156
Description: (Read) Provides the number of counters accessible on a trace unit,
157
as specified by bit 15:13 of register ETMCCR.
159
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/nr_ctxid_cmp
160
Date: November 2014
161
KernelVersion: 3.19
162
Contact: Mathieu Poirier <[email protected]>
163
Description: (Read) Provides the number of context ID comparator available on a
164
trace unit, as specified by bit 25:24 of register ETMCCR.
166
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/reset
167
Date: November 2014
168
KernelVersion: 3.19
169
Contact: Mathieu Poirier <[email protected]>
170
Description: (Write) Cancels all configuration on a trace unit and set it back
171
to its boot configuration.
173
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/seq_12_event
174
Date: November 2014
175
KernelVersion: 3.19
176
Contact: Mathieu Poirier <[email protected]>
177
Description: (RW) Defines the event that causes the sequencer to transition
178
from state 1 to state 2.
180
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/seq_13_event
181
Date: November 2014
182
KernelVersion: 3.19
183
Contact: Mathieu Poirier <[email protected]>
184
Description: (RW) Defines the event that causes the sequencer to transition
185
from state 1 to state 3.
187
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/seq_21_event
188
Date: November 2014
189
KernelVersion: 3.19
190
Contact: Mathieu Poirier <[email protected]>
191
Description: (RW) Defines the event that causes the sequencer to transition
192
from state 2 to state 1.
194
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/seq_23_event
195
Date: November 2014
196
KernelVersion: 3.19
197
Contact: Mathieu Poirier <[email protected]>
198
Description: (RW) Defines the event that causes the sequencer to transition
199
from state 2 to state 3.
201
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/seq_31_event
202
Date: November 2014
203
KernelVersion: 3.19
204
Contact: Mathieu Poirier <[email protected]>
205
Description: (RW) Defines the event that causes the sequencer to transition
206
from state 3 to state 1.
208
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/seq_32_event
209
Date: November 2014
210
KernelVersion: 3.19
211
Contact: Mathieu Poirier <[email protected]>
212
Description: (RW) Defines the event that causes the sequencer to transition
213
from state 3 to state 2.
215
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/curr_seq_state
216
Date: November 2014
217
KernelVersion: 3.19
218
Contact: Mathieu Poirier <[email protected]>
219
Description: (Read) Holds the current state of the sequencer.
221
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/sync_freq
222
Date: November 2014
223
KernelVersion: 3.19
224
Contact: Mathieu Poirier <[email protected]>
225
Description: (RW) Holds the trace synchronization frequency value - must be
226
programmed with the various implementation behavior in mind.
228
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/timestamp_event
229
Date: November 2014
230
KernelVersion: 3.19
231
Contact: Mathieu Poirier <[email protected]>
232
Description: (RW) Defines an event that requests the insertion of a timestamp
233
into the trace stream.
235
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/traceid
236
Date: November 2014
237
KernelVersion: 3.19
238
Contact: Mathieu Poirier <[email protected]>
239
Description: (RO) Holds the trace ID that will appear in the trace stream
240
coming from this trace entity.
242
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/trigger_event
243
Date: November 2014
244
KernelVersion: 3.19
245
Contact: Mathieu Poirier <[email protected]>
246
Description: (RW) Define the event that controls the trigger.
248
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/cpu
249
Date: October 2015
250
KernelVersion: 4.4
251
Contact: Mathieu Poirier <[email protected]>
252
Description: (RO) Holds the cpu number this tracer is affined to.
254
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/label
255
Date: Aug 2025
256
KernelVersion 6.18
257
Contact: Mao Jinlong <[email protected]>
258
Description: (Read) Show hardware context information of device.
260
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/mgmt/etmccr
261
Date: September 2015
262
KernelVersion: 4.4
263
Contact: Mathieu Poirier <[email protected]>
264
Description: (RO) Print the content of the ETM Configuration Code register
265
(0x004). The value is read directly from the HW.
267
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/mgmt/etmccer
268
Date: September 2015
269
KernelVersion: 4.4
270
Contact: Mathieu Poirier <[email protected]>
271
Description: (RO) Print the content of the ETM Configuration Code Extension
272
register (0x1e8). The value is read directly from the HW.
274
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/mgmt/etmscr
275
Date: September 2015
276
KernelVersion: 4.4
277
Contact: Mathieu Poirier <[email protected]>
278
Description: (RO) Print the content of the ETM System Configuration
279
register (0x014). The value is read directly from the HW.
281
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/mgmt/etmidr
282
Date: September 2015
283
KernelVersion: 4.4
284
Contact: Mathieu Poirier <[email protected]>
285
Description: (RO) Print the content of the ETM ID register (0x1e4). The
286
value is read directly from the HW.
288
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/mgmt/etmcr
289
Date: September 2015
290
KernelVersion: 4.4
291
Contact: Mathieu Poirier <[email protected]>
292
Description: (RO) Print the content of the ETM Main Control register (0x000).
293
The value is read directly from the HW.
295
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/mgmt/etmtraceidr
296
Date: September 2015
297
KernelVersion: 4.4
298
Contact: Mathieu Poirier <[email protected]>
299
Description: (RO) Print the content of the ETM Trace ID register (0x200).
300
The value is read directly from the HW.
302
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/mgmt/etmteevr
303
Date: September 2015
304
KernelVersion: 4.4
305
Contact: Mathieu Poirier <[email protected]>
306
Description: (RO) Print the content of the ETM Trace Enable Event register
307
(0x020). The value is read directly from the HW.
309
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/mgmt/etmtsscr
310
Date: September 2015
311
KernelVersion: 4.4
312
Contact: Mathieu Poirier <[email protected]>
313
Description: (RO) Print the content of the ETM Trace Start/Stop Control
314
register (0x018). The value is read directly from the HW.
316
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/mgmt/etmtecr1
317
Date: September 2015
318
KernelVersion: 4.4
319
Contact: Mathieu Poirier <[email protected]>
320
Description: (RO) Print the content of the ETM Enable Control #1
321
register (0x024). The value is read directly from the HW.
323
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/mgmt/etmtecr2
324
Date: September 2015
325
KernelVersion: 4.4
326
Contact: Mathieu Poirier <[email protected]>
327
Description: (RO) Print the content of the ETM Enable Control #2
328
register (0x01c). The value is read directly from the HW.
3. 한국어 전문 번역
영어 원문의 문단 순서와 의미를 유지한 전체 번역입니다. 코드, 함수명, symbol과 URL은 원문 표기를 유지합니다.
ETM/PTM source enable과 address comparators
1-59| 공통 항목 | 내용 |
|---|---|
| Date | 2014년 11월 |
| KernelVersion | 3.19 |
| Contact | Mathieu Poirier <[email protected]> |
| 적용 범위 | 별도 metadata가 있는 cpu·label·mgmt를 제외한 lines 1-247 attributes |
| What suffix | Access | 전문 번역 |
|---|---|---|
| enable_source | RW | 이 특정 trace entity의 tracing을 enable 또는 disable합니다. Source를 enable한다는 것은 source가 올바르게 configure되었고 sink가 identified되었음을 전제로 합니다. Source와 sink를 연결하는 CoreSight component path는 CoreSight framework가 자동으로 configure하고 manage합니다. |
| addr_idx | Selector | 작업할 address comparator 또는 comparator pair를 선택합니다. |
| addr_acctype | RW | addr_idx와 함께 사용합니다. Configure할 address comparator의 access type, trace할 instruction 종류, trigger할 processor context ID 같은 characteristics를 지정합니다. Access type register의 개별 field는 trace entity version에 따라 다를 수 있습니다. |
| addr_range | RW | addr_idx와 함께 사용합니다. Trigger할 address range를 지정합니다. Inclusion 또는 exclusion은 corresponding access type register에서 지정합니다. |
| addr_single | RW | addr_idx와 함께 사용합니다. Trigger할 single address를 지정하며 corresponding access type register의 configuration options에 큰 영향을 받습니다. |
| addr_start | RW | addr_idx와 함께 사용합니다. Tracing을 시작할 single address를 지정하며 corresponding access type register의 configuration options에 큰 영향을 받습니다. |
| addr_stop | RW | addr_idx와 함께 사용합니다. Tracing을 중지할 single address를 지정하며 corresponding access type register의 configuration options에 큰 영향을 받습니다. |
위 suffix는 모두 /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/ 아래의 file입니다.
Configured ETM or PTM source→Identified sink→Enable source→Framework-managed CoreSight path→Trace stream
Write addr_idx→Select comparator or pair→Set addr_acctype→Program range, single, start or stop address
Sink를 먼저 identify한 뒤 framework가 path를 구성하며 addr_idx가 comparator-specific programming files의 target을 정한다.
Counter registers와 context ID comparators
61-113| What suffix | Access | 전문 번역 |
|---|---|---|
| cntr_idx | RW | 작업할 counter를 지정합니다. |
| cntr_event | RW | cntr_idx와 함께 사용하며 counter event register에 access합니다. |
| cntr_val | RW | cntr_idx와 함께 사용하며 counter value register에 access합니다. |
| cntr_rld_val | RW | cntr_idx와 함께 사용하며 counter reload value register에 access합니다. |
| cntr_rld_event | RW | cntr_idx와 함께 사용하며 counter reload event register에 access합니다. |
| ctxid_idx | RW | 선택할 context ID register의 index를 지정합니다. |
| ctxid_mask | RW | 모든 context ID comparator에 적용할 mask입니다. |
| ctxid_pid | RW | ctxid_idx와 함께 사용하며 trigger할 context ID를 지정합니다. |
cntr_idx→Selected counter→event, value, reload value and reload event
ctxid_idx→Selected context ID comparator→ctxid_pid trigger value
ctxid_mask→Mask applied to all context ID comparators
Counter와 context comparator는 selector file로 target을 고른 뒤 관련 register view를 read/write한다.
Trace control, resource counts와 reset
115-171| What suffix | Access | 전문 번역 |
|---|---|---|
| enable_event | RW | 어떤 event가 trace를 trigger하는지 정의합니다. |
| etmsr | RW | Programming information과 특정 events의 status를 담는 ETM status register에 access합니다. |
| fifofull_level | RW | FIFO를 full로 간주하기 전 남아 있는 byte 수입니다. Tracer version에 따라 data suppression threshold도 담을 수 있습니다. |
| mode | RW | Driver의 mode field와 interface하며 timestamping, context ID size, cycle-accurate tracing 같은 trace entity의 여러 측면을 제어합니다. Driver-specific이고 driver에 따라 바뀔 수 있습니다. |
| nr_addr_cmp | Read | ETMCCR register bits [3:0]이 지정하는 trace unit에서 access 가능한 address comparator pairs 수를 제공합니다. |
| nr_cntr | Read | ETMCCR register bits [15:13]이 지정하는 trace unit에서 access 가능한 counters 수를 제공합니다. |
| nr_ctxid_cmp | Read | ETMCCR register bits [25:24]가 지정하는 trace unit의 available context ID comparators 수를 제공합니다. |
| reset | Write | Trace unit의 모든 configuration을 cancel하고 boot configuration으로 되돌립니다. |
ETM three-state sequencer events
173-219| What suffix | Access | 전문 번역 |
|---|---|---|
| seq_12_event | RW | Sequencer를 state 1에서 state 2로 transition시키는 event를 정의합니다. |
| seq_13_event | RW | Sequencer를 state 1에서 state 3으로 transition시키는 event를 정의합니다. |
| seq_21_event | RW | Sequencer를 state 2에서 state 1로 transition시키는 event를 정의합니다. |
| seq_23_event | RW | Sequencer를 state 2에서 state 3으로 transition시키는 event를 정의합니다. |
| seq_31_event | RW | Sequencer를 state 3에서 state 1로 transition시키는 event를 정의합니다. |
| seq_32_event | RW | Sequencer를 state 3에서 state 2로 transition시키는 event를 정의합니다. |
| curr_seq_state | Read | Sequencer의 current state를 담습니다. |
State 1→seq_12_event→State 2
State 1→seq_13_event→State 3
State 2→seq_21_event→State 1
State 2→seq_23_event→State 3
State 3→seq_31_event→State 1
State 3→seq_32_event→State 2
Sequencer→curr_seq_state→Current state
States 1, 2, 3 사이의 모든 directed transition이 각 seq_XY_event attribute로 독립 정의된다.
Synchronization, timestamp, trigger와 trace identity
221-258| What suffix | Access | 전문 번역 |
|---|---|---|
| sync_freq | RW | Trace synchronization frequency value를 담습니다. 여러 implementation behavior를 고려하여 program해야 합니다. |
| timestamp_event | RW | Trace stream에 timestamp 삽입을 요청하는 event를 정의합니다. |
| traceid | RO | 이 trace entity에서 나오는 trace stream에 나타날 trace ID를 담습니다. |
| trigger_event | RW | Trigger를 제어하는 event를 정의합니다. |
| What | Date | KernelVersion | Contact | 전문 번역 |
|---|---|---|---|---|
| /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/cpu | 2015년 10월 | 4.4 | Mathieu Poirier <[email protected]> | (RO) 이 tracer가 affined된 CPU number를 담습니다. |
| /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/label | 2025년 8월 | 6.18 | Mao Jinlong <[email protected]> | (Read) Device의 hardware context information을 보여 줍니다. |
ETM hardware management registers
260-328| 공통 항목 | 내용 |
|---|---|
| Date | 2015년 9월 |
| KernelVersion | 4.4 |
| Contact | Mathieu Poirier <[email protected]> |
| What suffix | Register | Offset | 전문 번역 |
|---|---|---|---|
| mgmt/etmccr | ETM Configuration Code | 0x004 | (RO) Hardware에서 직접 읽은 register content를 출력합니다. |
| mgmt/etmccer | ETM Configuration Code Extension | 0x1e8 | (RO) Hardware에서 직접 읽은 register content를 출력합니다. |
| mgmt/etmscr | ETM System Configuration | 0x014 | (RO) Hardware에서 직접 읽은 register content를 출력합니다. |
| mgmt/etmidr | ETM ID | 0x1e4 | (RO) Hardware에서 직접 읽은 register content를 출력합니다. |
| mgmt/etmcr | ETM Main Control | 0x000 | (RO) Hardware에서 직접 읽은 register content를 출력합니다. |
| mgmt/etmtraceidr | ETM Trace ID | 0x200 | (RO) Hardware에서 직접 읽은 register content를 출력합니다. |
| mgmt/etmteevr | ETM Trace Enable Event | 0x020 | (RO) Hardware에서 직접 읽은 register content를 출력합니다. |
| mgmt/etmtsscr | ETM Trace Start/Stop Control | 0x018 | (RO) Hardware에서 직접 읽은 register content를 출력합니다. |
| mgmt/etmtecr1 | ETM Enable Control #1 | 0x024 | (RO) Hardware에서 직접 읽은 register content를 출력합니다. |
| mgmt/etmtecr2 | ETM Enable Control #2 | 0x01c | (RO) Hardware에서 직접 읽은 register content를 출력합니다. |
모든 management path는 /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/ 아래에 있습니다.
Trace source와 address comparator programming
sysfs-bus-coresight-devices-etm3x:1-59enable_source는 configured ETM/PTM을 identified sink에 연결하고, addr_idx와 access type·range·single·start·stop attributes가 selected address comparator를 program합니다.