1 what: /sys/kernel/mm/damon/ 1 what: /sys/kernel/mm/damon/
2 Date: Mar 2022 2 Date: Mar 2022
3 Contact: SeongJae Park <sj@kernel.org> 3 Contact: SeongJae Park <sj@kernel.org>
4 Description: Interface for Data Access MONi 4 Description: Interface for Data Access MONitoring (DAMON). Contains files
5 for controlling DAMON. For mo 5 for controlling DAMON. For more details on DAMON itself,
6 please refer to Documentation/ 6 please refer to Documentation/admin-guide/mm/damon/index.rst.
7 7
8 What: /sys/kernel/mm/damon/admin/ 8 What: /sys/kernel/mm/damon/admin/
9 Date: Mar 2022 9 Date: Mar 2022
10 Contact: SeongJae Park <sj@kernel.org> 10 Contact: SeongJae Park <sj@kernel.org>
11 Description: Interface for privileged users 11 Description: Interface for privileged users of DAMON. Contains files for
12 controlling DAMON that aimed t 12 controlling DAMON that aimed to be used by privileged users.
13 13
14 What: /sys/kernel/mm/damon/admin/kda 14 What: /sys/kernel/mm/damon/admin/kdamonds/nr_kdamonds
15 Date: Mar 2022 15 Date: Mar 2022
16 Contact: SeongJae Park <sj@kernel.org> 16 Contact: SeongJae Park <sj@kernel.org>
17 Description: Writing a number 'N' to this f 17 Description: Writing a number 'N' to this file creates the number of
18 directories for controlling ea 18 directories for controlling each DAMON worker thread (kdamond)
19 named '0' to 'N-1' under the k 19 named '0' to 'N-1' under the kdamonds/ directory.
20 20
21 What: /sys/kernel/mm/damon/admin/kda 21 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/state
22 Date: Mar 2022 22 Date: Mar 2022
23 Contact: SeongJae Park <sj@kernel.org> 23 Contact: SeongJae Park <sj@kernel.org>
24 Description: Writing 'on' or 'off' to this 24 Description: Writing 'on' or 'off' to this file makes the kdamond starts or
25 stops, respectively. Reading 25 stops, respectively. Reading the file returns the keywords
26 based on the current status. 26 based on the current status. Writing 'commit' to this file
27 makes the kdamond reads the us 27 makes the kdamond reads the user inputs in the sysfs files
28 except 'state' again. Writing 28 except 'state' again. Writing 'commit_schemes_quota_goals' to
29 this file makes the kdamond re 29 this file makes the kdamond reads the quota goal files again.
30 Writing 'update_schemes_stats' 30 Writing 'update_schemes_stats' to the file updates contents of
31 schemes stats files of the kda 31 schemes stats files of the kdamond. Writing
32 'update_schemes_tried_regions' 32 'update_schemes_tried_regions' to the file updates contents of
33 'tried_regions' directory of e 33 'tried_regions' directory of every scheme directory of this
34 kdamond. Writing 'update_sche 34 kdamond. Writing 'update_schemes_tried_bytes' to the file
35 updates only '.../tried_region 35 updates only '.../tried_regions/total_bytes' files of this
36 kdamond. Writing 'clear_schem 36 kdamond. Writing 'clear_schemes_tried_regions' to the file
37 removes contents of the 'tried !! 37 removes contents of the 'tried_regions' directory.
38 'update_schemes_effective_quot <<
39 '.../quotas/effective_bytes' f <<
40 38
41 What: /sys/kernel/mm/damon/admin/kda 39 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/pid
42 Date: Mar 2022 40 Date: Mar 2022
43 Contact: SeongJae Park <sj@kernel.org> 41 Contact: SeongJae Park <sj@kernel.org>
44 Description: Reading this file returns the 42 Description: Reading this file returns the pid of the kdamond if it is
45 running. 43 running.
46 44
47 What: /sys/kernel/mm/damon/admin/kda 45 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/nr_contexts
48 Date: Mar 2022 46 Date: Mar 2022
49 Contact: SeongJae Park <sj@kernel.org> 47 Contact: SeongJae Park <sj@kernel.org>
50 Description: Writing a number 'N' to this f 48 Description: Writing a number 'N' to this file creates the number of
51 directories for controlling ea 49 directories for controlling each DAMON context named '0' to
52 'N-1' under the contexts/ dire 50 'N-1' under the contexts/ directory.
53 51
54 What: /sys/kernel/mm/damon/admin/kda 52 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/avail_operations
55 Date: Apr 2022 53 Date: Apr 2022
56 Contact: SeongJae Park <sj@kernel.org> 54 Contact: SeongJae Park <sj@kernel.org>
57 Description: Reading this file returns the 55 Description: Reading this file returns the available monitoring operations
58 sets on the currently running 56 sets on the currently running kernel.
59 57
60 What: /sys/kernel/mm/damon/admin/kda 58 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/operations
61 Date: Mar 2022 59 Date: Mar 2022
62 Contact: SeongJae Park <sj@kernel.org> 60 Contact: SeongJae Park <sj@kernel.org>
63 Description: Writing a keyword for a monito 61 Description: Writing a keyword for a monitoring operations set ('vaddr' for
64 virtual address spaces monitor 62 virtual address spaces monitoring, 'fvaddr' for fixed virtual
65 address ranges monitoring, and 63 address ranges monitoring, and 'paddr' for the physical address
66 space monitoring) to this file 64 space monitoring) to this file makes the context to use the
67 operations set. Reading the f 65 operations set. Reading the file returns the keyword for the
68 operations set the context is 66 operations set the context is set to use.
69 67
70 Note that only the operations 68 Note that only the operations sets that listed in
71 'avail_operations' file are va 69 'avail_operations' file are valid inputs.
72 70
73 What: /sys/kernel/mm/damon/admin/kda 71 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/sample_us
74 Date: Mar 2022 72 Date: Mar 2022
75 Contact: SeongJae Park <sj@kernel.org> 73 Contact: SeongJae Park <sj@kernel.org>
76 Description: Writing a value to this file s 74 Description: Writing a value to this file sets the sampling interval of the
77 DAMON context in microseconds 75 DAMON context in microseconds as the value. Reading this file
78 returns the value. 76 returns the value.
79 77
80 What: /sys/kernel/mm/damon/admin/kda 78 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/aggr_us
81 Date: Mar 2022 79 Date: Mar 2022
82 Contact: SeongJae Park <sj@kernel.org> 80 Contact: SeongJae Park <sj@kernel.org>
83 Description: Writing a value to this file s 81 Description: Writing a value to this file sets the aggregation interval of
84 the DAMON context in microseco 82 the DAMON context in microseconds as the value. Reading this
85 file returns the value. 83 file returns the value.
86 84
87 What: /sys/kernel/mm/damon/admin/kda 85 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/update_us
88 Date: Mar 2022 86 Date: Mar 2022
89 Contact: SeongJae Park <sj@kernel.org> 87 Contact: SeongJae Park <sj@kernel.org>
90 Description: Writing a value to this file s 88 Description: Writing a value to this file sets the update interval of the
91 DAMON context in microseconds 89 DAMON context in microseconds as the value. Reading this file
92 returns the value. 90 returns the value.
93 91
94 What: /sys/kernel/mm/damon/admin/kda 92 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/nr_regions/min
95 93
96 WDate: Mar 2022 94 WDate: Mar 2022
97 Contact: SeongJae Park <sj@kernel.org> 95 Contact: SeongJae Park <sj@kernel.org>
98 Description: Writing a value to this file s 96 Description: Writing a value to this file sets the minimum number of
99 monitoring regions of the DAMO 97 monitoring regions of the DAMON context as the value. Reading
100 this file returns the value. 98 this file returns the value.
101 99
102 What: /sys/kernel/mm/damon/admin/kda 100 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/nr_regions/max
103 Date: Mar 2022 101 Date: Mar 2022
104 Contact: SeongJae Park <sj@kernel.org> 102 Contact: SeongJae Park <sj@kernel.org>
105 Description: Writing a value to this file s 103 Description: Writing a value to this file sets the maximum number of
106 monitoring regions of the DAMO 104 monitoring regions of the DAMON context as the value. Reading
107 this file returns the value. 105 this file returns the value.
108 106
109 What: /sys/kernel/mm/damon/admin/kda 107 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/targets/nr_targets
110 Date: Mar 2022 108 Date: Mar 2022
111 Contact: SeongJae Park <sj@kernel.org> 109 Contact: SeongJae Park <sj@kernel.org>
112 Description: Writing a number 'N' to this f 110 Description: Writing a number 'N' to this file creates the number of
113 directories for controlling ea 111 directories for controlling each DAMON target of the context
114 named '0' to 'N-1' under the c 112 named '0' to 'N-1' under the contexts/ directory.
115 113
116 What: /sys/kernel/mm/damon/admin/kda 114 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/targets/<T>/pid_target
117 Date: Mar 2022 115 Date: Mar 2022
118 Contact: SeongJae Park <sj@kernel.org> 116 Contact: SeongJae Park <sj@kernel.org>
119 Description: Writing to and reading from th 117 Description: Writing to and reading from this file sets and gets the pid of
120 the target process if the cont 118 the target process if the context is for virtual address spaces
121 monitoring, respectively. 119 monitoring, respectively.
122 120
123 What: /sys/kernel/mm/damon/admin/kda 121 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/targets/<T>/regions/nr_regions
124 Date: Mar 2022 122 Date: Mar 2022
125 Contact: SeongJae Park <sj@kernel.org> 123 Contact: SeongJae Park <sj@kernel.org>
126 Description: Writing a number 'N' to this f 124 Description: Writing a number 'N' to this file creates the number of
127 directories for setting each D 125 directories for setting each DAMON target memory region of the
128 context named '0' to 'N-1' und 126 context named '0' to 'N-1' under the regions/ directory. In
129 case of the virtual address sp 127 case of the virtual address space monitoring, DAMON
130 automatically sets the target 128 automatically sets the target memory region based on the target
131 processes' mappings. 129 processes' mappings.
132 130
133 What: /sys/kernel/mm/damon/admin/kda 131 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/targets/<T>/regions/<R>/start
134 Date: Mar 2022 132 Date: Mar 2022
135 Contact: SeongJae Park <sj@kernel.org> 133 Contact: SeongJae Park <sj@kernel.org>
136 Description: Writing to and reading from th 134 Description: Writing to and reading from this file sets and gets the start
137 address of the monitoring regi 135 address of the monitoring region.
138 136
139 What: /sys/kernel/mm/damon/admin/kda 137 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/targets/<T>/regions/<R>/end
140 Date: Mar 2022 138 Date: Mar 2022
141 Contact: SeongJae Park <sj@kernel.org> 139 Contact: SeongJae Park <sj@kernel.org>
142 Description: Writing to and reading from th 140 Description: Writing to and reading from this file sets and gets the end
143 address of the monitoring regi 141 address of the monitoring region.
144 142
145 What: /sys/kernel/mm/damon/admin/kda 143 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/nr_schemes
146 Date: Mar 2022 144 Date: Mar 2022
147 Contact: SeongJae Park <sj@kernel.org> 145 Contact: SeongJae Park <sj@kernel.org>
148 Description: Writing a number 'N' to this f 146 Description: Writing a number 'N' to this file creates the number of
149 directories for controlling ea 147 directories for controlling each DAMON-based operation scheme
150 of the context named '0' to 'N 148 of the context named '0' to 'N-1' under the schemes/ directory.
151 149
152 What: /sys/kernel/mm/damon/admin/kda 150 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/action
153 Date: Mar 2022 151 Date: Mar 2022
154 Contact: SeongJae Park <sj@kernel.org> 152 Contact: SeongJae Park <sj@kernel.org>
155 Description: Writing to and reading from th 153 Description: Writing to and reading from this file sets and gets the action
156 of the scheme. 154 of the scheme.
157 155
158 What: /sys/kernel/mm/damon/admin/kda <<
159 Date: Jun 2024 <<
160 Contact: SeongJae Park <sj@kernel.org> <<
161 Description: Action's target NUMA node id. <<
162 actions. <<
163 <<
164 What: /sys/kernel/mm/damon/admin/kda 156 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/apply_interval_us
165 Date: Sep 2023 157 Date: Sep 2023
166 Contact: SeongJae Park <sj@kernel.org> 158 Contact: SeongJae Park <sj@kernel.org>
167 Description: Writing a value to this file s 159 Description: Writing a value to this file sets the action apply interval of
168 the scheme in microseconds. R 160 the scheme in microseconds. Reading this file returns the
169 value. 161 value.
170 162
171 What: /sys/kernel/mm/damon/admin/kda 163 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/sz/min
172 Date: Mar 2022 164 Date: Mar 2022
173 Contact: SeongJae Park <sj@kernel.org> 165 Contact: SeongJae Park <sj@kernel.org>
174 Description: Writing to and reading from th 166 Description: Writing to and reading from this file sets and gets the minimum
175 size of the scheme's target re 167 size of the scheme's target regions in bytes.
176 168
177 What: /sys/kernel/mm/damon/admin/kda 169 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/sz/max
178 Date: Mar 2022 170 Date: Mar 2022
179 Contact: SeongJae Park <sj@kernel.org> 171 Contact: SeongJae Park <sj@kernel.org>
180 Description: Writing to and reading from th 172 Description: Writing to and reading from this file sets and gets the maximum
181 size of the scheme's target re 173 size of the scheme's target regions in bytes.
182 174
183 What: /sys/kernel/mm/damon/admin/kda 175 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/nr_accesses/min
184 Date: Mar 2022 176 Date: Mar 2022
185 Contact: SeongJae Park <sj@kernel.org> 177 Contact: SeongJae Park <sj@kernel.org>
186 Description: Writing to and reading from th 178 Description: Writing to and reading from this file sets and gets the manimum
187 'nr_accesses' of the scheme's 179 'nr_accesses' of the scheme's target regions.
188 180
189 What: /sys/kernel/mm/damon/admin/kda 181 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/nr_accesses/max
190 Date: Mar 2022 182 Date: Mar 2022
191 Contact: SeongJae Park <sj@kernel.org> 183 Contact: SeongJae Park <sj@kernel.org>
192 Description: Writing to and reading from th 184 Description: Writing to and reading from this file sets and gets the maximum
193 'nr_accesses' of the scheme's 185 'nr_accesses' of the scheme's target regions.
194 186
195 What: /sys/kernel/mm/damon/admin/kda 187 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/age/min
196 Date: Mar 2022 188 Date: Mar 2022
197 Contact: SeongJae Park <sj@kernel.org> 189 Contact: SeongJae Park <sj@kernel.org>
198 Description: Writing to and reading from th 190 Description: Writing to and reading from this file sets and gets the minimum
199 'age' of the scheme's target r 191 'age' of the scheme's target regions.
200 192
201 What: /sys/kernel/mm/damon/admin/kda 193 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/age/max
202 Date: Mar 2022 194 Date: Mar 2022
203 Contact: SeongJae Park <sj@kernel.org> 195 Contact: SeongJae Park <sj@kernel.org>
204 Description: Writing to and reading from th 196 Description: Writing to and reading from this file sets and gets the maximum
205 'age' of the scheme's target r 197 'age' of the scheme's target regions.
206 198
207 What: /sys/kernel/mm/damon/admin/kda 199 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/ms
208 Date: Mar 2022 200 Date: Mar 2022
209 Contact: SeongJae Park <sj@kernel.org> 201 Contact: SeongJae Park <sj@kernel.org>
210 Description: Writing to and reading from th 202 Description: Writing to and reading from this file sets and gets the time
211 quota of the scheme in millise 203 quota of the scheme in milliseconds.
212 204
213 What: /sys/kernel/mm/damon/admin/kda 205 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/bytes
214 Date: Mar 2022 206 Date: Mar 2022
215 Contact: SeongJae Park <sj@kernel.org> 207 Contact: SeongJae Park <sj@kernel.org>
216 Description: Writing to and reading from th 208 Description: Writing to and reading from this file sets and gets the size
217 quota of the scheme in bytes. 209 quota of the scheme in bytes.
218 210
219 What: /sys/kernel/mm/damon/admin/kda <<
220 Date: Feb 2024 <<
221 Contact: SeongJae Park <sj@kernel.org> <<
222 Description: Reading from this file gets th <<
223 scheme in bytes, which adjuste <<
224 <<
225 What: /sys/kernel/mm/damon/admin/kda 211 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/reset_interval_ms
226 Date: Mar 2022 212 Date: Mar 2022
227 Contact: SeongJae Park <sj@kernel.org> 213 Contact: SeongJae Park <sj@kernel.org>
228 Description: Writing to and reading from th 214 Description: Writing to and reading from this file sets and gets the quotas
229 charge reset interval of the s 215 charge reset interval of the scheme in milliseconds.
230 216
231 What: /sys/kernel/mm/damon/admin/kda 217 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/goals/nr_goals
232 Date: Nov 2023 218 Date: Nov 2023
233 Contact: SeongJae Park <sj@kernel.org> 219 Contact: SeongJae Park <sj@kernel.org>
234 Description: Writing a number 'N' to this f 220 Description: Writing a number 'N' to this file creates the number of
235 directories for setting automa 221 directories for setting automatic tuning of the scheme's
236 aggressiveness named '0' to 'N 222 aggressiveness named '0' to 'N-1' under the goals/ directory.
237 223
238 What: /sys/kernel/mm/damon/admin/kda <<
239 Date: Feb 2024 <<
240 Contact: SeongJae Park <sj@kernel.org> <<
241 Description: Writing to and reading from th <<
242 auto-tuning goal metric. <<
243 <<
244 What: /sys/kernel/mm/damon/admin/kda 224 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/goals/<G>/target_value
245 Date: Nov 2023 225 Date: Nov 2023
246 Contact: SeongJae Park <sj@kernel.org> 226 Contact: SeongJae Park <sj@kernel.org>
247 Description: Writing to and reading from th 227 Description: Writing to and reading from this file sets and gets the target
248 value of the goal metric. 228 value of the goal metric.
249 229
250 What: /sys/kernel/mm/damon/admin/kda 230 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/goals/<G>/current_value
251 Date: Nov 2023 231 Date: Nov 2023
252 Contact: SeongJae Park <sj@kernel.org> 232 Contact: SeongJae Park <sj@kernel.org>
253 Description: Writing to and reading from th 233 Description: Writing to and reading from this file sets and gets the current
254 value of the goal metric. 234 value of the goal metric.
255 235
256 What: /sys/kernel/mm/damon/admin/kda 236 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/weights/sz_permil
257 Date: Mar 2022 237 Date: Mar 2022
258 Contact: SeongJae Park <sj@kernel.org> 238 Contact: SeongJae Park <sj@kernel.org>
259 Description: Writing to and reading from th 239 Description: Writing to and reading from this file sets and gets the
260 under-quota limit regions prio 240 under-quota limit regions prioritization weight for 'size' in
261 permil. 241 permil.
262 242
263 What: /sys/kernel/mm/damon/admin/kda 243 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/weights/nr_accesses_permil
264 Date: Mar 2022 244 Date: Mar 2022
265 Contact: SeongJae Park <sj@kernel.org> 245 Contact: SeongJae Park <sj@kernel.org>
266 Description: Writing to and reading from th 246 Description: Writing to and reading from this file sets and gets the
267 under-quota limit regions prio 247 under-quota limit regions prioritization weight for
268 'nr_accesses' in permil. 248 'nr_accesses' in permil.
269 249
270 What: /sys/kernel/mm/damon/admin/kda 250 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/weights/age_permil
271 Date: Mar 2022 251 Date: Mar 2022
272 Contact: SeongJae Park <sj@kernel.org> 252 Contact: SeongJae Park <sj@kernel.org>
273 Description: Writing to and reading from th 253 Description: Writing to and reading from this file sets and gets the
274 under-quota limit regions prio 254 under-quota limit regions prioritization weight for 'age' in
275 permil. 255 permil.
276 256
277 What: /sys/kernel/mm/damon/admin/kda 257 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/watermarks/metric
278 Date: Mar 2022 258 Date: Mar 2022
279 Contact: SeongJae Park <sj@kernel.org> 259 Contact: SeongJae Park <sj@kernel.org>
280 Description: Writing to and reading from th 260 Description: Writing to and reading from this file sets and gets the metric
281 of the watermarks for the sche 261 of the watermarks for the scheme. The writable/readable
282 keywords for this file are 'no 262 keywords for this file are 'none' for disabling the watermarks
283 feature, or 'free_mem_rate' fo 263 feature, or 'free_mem_rate' for the system's global free memory
284 rate in permil. 264 rate in permil.
285 265
286 What: /sys/kernel/mm/damon/admin/kda 266 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/watermarks/interval_us
287 Date: Mar 2022 267 Date: Mar 2022
288 Contact: SeongJae Park <sj@kernel.org> 268 Contact: SeongJae Park <sj@kernel.org>
289 Description: Writing to and reading from th 269 Description: Writing to and reading from this file sets and gets the metric
290 check interval of the watermar 270 check interval of the watermarks for the scheme in
291 microseconds. 271 microseconds.
292 272
293 What: /sys/kernel/mm/damon/admin/kda 273 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/watermarks/high
294 Date: Mar 2022 274 Date: Mar 2022
295 Contact: SeongJae Park <sj@kernel.org> 275 Contact: SeongJae Park <sj@kernel.org>
296 Description: Writing to and reading from th 276 Description: Writing to and reading from this file sets and gets the high
297 watermark of the scheme in per 277 watermark of the scheme in permil.
298 278
299 What: /sys/kernel/mm/damon/admin/kda 279 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/watermarks/mid
300 Date: Mar 2022 280 Date: Mar 2022
301 Contact: SeongJae Park <sj@kernel.org> 281 Contact: SeongJae Park <sj@kernel.org>
302 Description: Writing to and reading from th 282 Description: Writing to and reading from this file sets and gets the mid
303 watermark of the scheme in per 283 watermark of the scheme in permil.
304 284
305 What: /sys/kernel/mm/damon/admin/kda 285 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/watermarks/low
306 Date: Mar 2022 286 Date: Mar 2022
307 Contact: SeongJae Park <sj@kernel.org> 287 Contact: SeongJae Park <sj@kernel.org>
308 Description: Writing to and reading from th 288 Description: Writing to and reading from this file sets and gets the low
309 watermark of the scheme in per 289 watermark of the scheme in permil.
310 290
311 What: /sys/kernel/mm/damon/admin/kda 291 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/nr_filters
312 Date: Dec 2022 292 Date: Dec 2022
313 Contact: SeongJae Park <sj@kernel.org> 293 Contact: SeongJae Park <sj@kernel.org>
314 Description: Writing a number 'N' to this f 294 Description: Writing a number 'N' to this file creates the number of
315 directories for setting filter 295 directories for setting filters of the scheme named '0' to
316 'N-1' under the filters/ direc 296 'N-1' under the filters/ directory.
317 297
318 What: /sys/kernel/mm/damon/admin/kda 298 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/type
319 Date: Dec 2022 299 Date: Dec 2022
320 Contact: SeongJae Park <sj@kernel.org> 300 Contact: SeongJae Park <sj@kernel.org>
321 Description: Writing to and reading from th 301 Description: Writing to and reading from this file sets and gets the type of
322 the memory of the interest. ' 302 the memory of the interest. 'anon' for anonymous pages,
323 'memcg' for specific memory cg !! 303 'memcg' for specific memory cgroup, 'addr' for address range
324 'addr' for address range (an o !! 304 (an open-ended interval), or 'target' for DAMON monitoring
325 for DAMON monitoring target ca !! 305 target can be written and read.
326 306
327 What: /sys/kernel/mm/damon/admin/kda 307 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/memcg_path
328 Date: Dec 2022 308 Date: Dec 2022
329 Contact: SeongJae Park <sj@kernel.org> 309 Contact: SeongJae Park <sj@kernel.org>
330 Description: If 'memcg' is written to the ' 310 Description: If 'memcg' is written to the 'type' file, writing to and
331 reading from this file sets an 311 reading from this file sets and gets the path to the memory
332 cgroup of the interest. 312 cgroup of the interest.
333 313
334 What: /sys/kernel/mm/damon/admin/kda 314 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/addr_start
335 Date: Jul 2023 315 Date: Jul 2023
336 Contact: SeongJae Park <sj@kernel.org> 316 Contact: SeongJae Park <sj@kernel.org>
337 Description: If 'addr' is written to the 't 317 Description: If 'addr' is written to the 'type' file, writing to or reading
338 from this file sets or gets th 318 from this file sets or gets the start address of the address
339 range for the filter. 319 range for the filter.
340 320
341 What: /sys/kernel/mm/damon/admin/kda 321 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/addr_end
342 Date: Jul 2023 322 Date: Jul 2023
343 Contact: SeongJae Park <sj@kernel.org> 323 Contact: SeongJae Park <sj@kernel.org>
344 Description: If 'addr' is written to the 't 324 Description: If 'addr' is written to the 'type' file, writing to or reading
345 from this file sets or gets th 325 from this file sets or gets the end address of the address
346 range for the filter. 326 range for the filter.
347 327
348 What: /sys/kernel/mm/damon/admin/kda 328 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/target_idx
349 Date: Dec 2022 329 Date: Dec 2022
350 Contact: SeongJae Park <sj@kernel.org> 330 Contact: SeongJae Park <sj@kernel.org>
351 Description: If 'target' is written to the 331 Description: If 'target' is written to the 'type' file, writing to or
352 reading from this file sets or 332 reading from this file sets or gets the index of the DAMON
353 monitoring target of the inter 333 monitoring target of the interest.
354 334
355 What: /sys/kernel/mm/damon/admin/kda 335 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/matching
356 Date: Dec 2022 336 Date: Dec 2022
357 Contact: SeongJae Park <sj@kernel.org> 337 Contact: SeongJae Park <sj@kernel.org>
358 Description: Writing 'Y' or 'N' to this fil 338 Description: Writing 'Y' or 'N' to this file sets whether to filter out
359 pages that do or do not match 339 pages that do or do not match to the 'type' and 'memcg_path',
360 respectively. Filter out mean 340 respectively. Filter out means the action of the scheme will
361 not be applied to. 341 not be applied to.
362 342
363 What: /sys/kernel/mm/damon/admin/kda 343 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/nr_tried
364 Date: Mar 2022 344 Date: Mar 2022
365 Contact: SeongJae Park <sj@kernel.org> 345 Contact: SeongJae Park <sj@kernel.org>
366 Description: Reading this file returns the 346 Description: Reading this file returns the number of regions that the action
367 of the scheme has tried to be 347 of the scheme has tried to be applied.
368 348
369 What: /sys/kernel/mm/damon/admin/kda 349 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/sz_tried
370 Date: Mar 2022 350 Date: Mar 2022
371 Contact: SeongJae Park <sj@kernel.org> 351 Contact: SeongJae Park <sj@kernel.org>
372 Description: Reading this file returns the 352 Description: Reading this file returns the total size of regions that the
373 action of the scheme has tried 353 action of the scheme has tried to be applied in bytes.
374 354
375 What: /sys/kernel/mm/damon/admin/kda 355 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/nr_applied
376 Date: Mar 2022 356 Date: Mar 2022
377 Contact: SeongJae Park <sj@kernel.org> 357 Contact: SeongJae Park <sj@kernel.org>
378 Description: Reading this file returns the 358 Description: Reading this file returns the number of regions that the action
379 of the scheme has successfully 359 of the scheme has successfully applied.
380 360
381 What: /sys/kernel/mm/damon/admin/kda 361 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/sz_applied
382 Date: Mar 2022 362 Date: Mar 2022
383 Contact: SeongJae Park <sj@kernel.org> 363 Contact: SeongJae Park <sj@kernel.org>
384 Description: Reading this file returns the 364 Description: Reading this file returns the total size of regions that the
385 action of the scheme has succe 365 action of the scheme has successfully applied in bytes.
386 366
387 What: /sys/kernel/mm/damon/admin/kda 367 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/qt_exceeds
388 Date: Mar 2022 368 Date: Mar 2022
389 Contact: SeongJae Park <sj@kernel.org> 369 Contact: SeongJae Park <sj@kernel.org>
390 Description: Reading this file returns the 370 Description: Reading this file returns the number of the exceed events of
391 the scheme's quotas. 371 the scheme's quotas.
392 372
393 What: /sys/kernel/mm/damon/admin/kda 373 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/total_bytes
394 Date: Jul 2023 374 Date: Jul 2023
395 Contact: SeongJae Park <sj@kernel.org> 375 Contact: SeongJae Park <sj@kernel.org>
396 Description: Reading this file returns the 376 Description: Reading this file returns the total amount of memory that
397 corresponding DAMON-based Oper 377 corresponding DAMON-based Operation Scheme's action has tried
398 to be applied. 378 to be applied.
399 379
400 What: /sys/kernel/mm/damon/admin/kda 380 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/start
401 Date: Oct 2022 381 Date: Oct 2022
402 Contact: SeongJae Park <sj@kernel.org> 382 Contact: SeongJae Park <sj@kernel.org>
403 Description: Reading this file returns the 383 Description: Reading this file returns the start address of a memory region
404 that corresponding DAMON-based 384 that corresponding DAMON-based Operation Scheme's action has
405 tried to be applied. 385 tried to be applied.
406 386
407 What: /sys/kernel/mm/damon/admin/kda 387 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/end
408 Date: Oct 2022 388 Date: Oct 2022
409 Contact: SeongJae Park <sj@kernel.org> 389 Contact: SeongJae Park <sj@kernel.org>
410 Description: Reading this file returns the 390 Description: Reading this file returns the end address of a memory region
411 that corresponding DAMON-based 391 that corresponding DAMON-based Operation Scheme's action has
412 tried to be applied. 392 tried to be applied.
413 393
414 What: /sys/kernel/mm/damon/admin/kda 394 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/nr_accesses
415 Date: Oct 2022 395 Date: Oct 2022
416 Contact: SeongJae Park <sj@kernel.org> 396 Contact: SeongJae Park <sj@kernel.org>
417 Description: Reading this file returns the 397 Description: Reading this file returns the 'nr_accesses' of a memory region
418 that corresponding DAMON-based 398 that corresponding DAMON-based Operation Scheme's action has
419 tried to be applied. 399 tried to be applied.
420 400
421 What: /sys/kernel/mm/damon/admin/kda 401 What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/age
422 Date: Oct 2022 402 Date: Oct 2022
423 Contact: SeongJae Park <sj@kernel.org> 403 Contact: SeongJae Park <sj@kernel.org>
424 Description: Reading this file returns the 404 Description: Reading this file returns the 'age' of a memory region that
425 corresponding DAMON-based Oper 405 corresponding DAMON-based Operation Scheme's action has tried
426 to be applied. 406 to be applied.
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