tjh.dev / kernel
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memcgroup: fix and update documentation

- remove trailing " Bytes"s in the demonstration
- remove section 4.4 (feature control_type has been removed)
- fix reference section

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Balbir Singh <balbir@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

authored by Li Zefan and committed by Linus Torvalds 2324c5dd bc231d2a

+9 -15
unified split
+9 -15
Documentation/controllers/memory.txt
··· 170 mega or gigabytes. 171 172 # cat /cgroups/0/memory.limit_in_bytes 173 - 4194304 Bytes 174 175 NOTE: The interface has now changed to display the usage in bytes 176 instead of pages 177 178 We can check the usage: 179 # cat /cgroups/0/memory.usage_in_bytes 180 - 1216512 Bytes 181 182 A successful write to this file does not guarantee a successful set of 183 this limit to the value written into the file. This can be due to a ··· 187 188 # echo -n 1 > memory.limit_in_bytes 189 # cat memory.limit_in_bytes 190 - 4096 Bytes 191 192 The memory.failcnt field gives the number of times that the cgroup limit was 193 exceeded. ··· 233 tasks have migrated away from it. Such charges are automatically dropped at 234 rmdir() if there are no tasks. 235 236 - 4.4 Choosing what to account -- Page Cache (unmapped) vs RSS (mapped)? 237 - 238 - The type of memory accounted by the cgroup can be limited to just 239 - mapped pages by writing "1" to memory.control_type field 240 - 241 - echo -n 1 > memory.control_type 242 - 243 5. TODO 244 245 1. Add support for accounting huge pages (as a separate controller) ··· 255 3. Emelianov, Pavel. Resource controllers based on process cgroups 256 http://lkml.org/lkml/2007/3/6/198 257 4. Emelianov, Pavel. RSS controller based on process cgroups (v2) 258 - http://lkml.org/lkml/2007/4/9/74 259 5. Emelianov, Pavel. RSS controller based on process cgroups (v3) 260 http://lkml.org/lkml/2007/5/30/244 261 6. Menage, Paul. Control Groups v10, http://lwn.net/Articles/236032/ 262 7. Vaidyanathan, Srinivasan, Control Groups: Pagecache accounting and control 263 subsystem (v3), http://lwn.net/Articles/235534/ 264 - 8. Singh, Balbir. RSS controller V2 test results (lmbench), 265 http://lkml.org/lkml/2007/5/17/232 266 - 9. Singh, Balbir. RSS controller V2 AIM9 results 267 http://lkml.org/lkml/2007/5/18/1 268 - 10. Singh, Balbir. Memory controller v6 results, 269 http://lkml.org/lkml/2007/8/19/36 270 - 11. Singh, Balbir. Memory controller v6, http://lkml.org/lkml/2007/8/17/69 271 12. Corbet, Jonathan, Controlling memory use in cgroups, 272 http://lwn.net/Articles/243795/
··· 170 mega or gigabytes. 171 172 # cat /cgroups/0/memory.limit_in_bytes 173 + 4194304 174 175 NOTE: The interface has now changed to display the usage in bytes 176 instead of pages 177 178 We can check the usage: 179 # cat /cgroups/0/memory.usage_in_bytes 180 + 1216512 181 182 A successful write to this file does not guarantee a successful set of 183 this limit to the value written into the file. This can be due to a ··· 187 188 # echo -n 1 > memory.limit_in_bytes 189 # cat memory.limit_in_bytes 190 + 4096 191 192 The memory.failcnt field gives the number of times that the cgroup limit was 193 exceeded. ··· 233 tasks have migrated away from it. Such charges are automatically dropped at 234 rmdir() if there are no tasks. 235 236 5. TODO 237 238 1. Add support for accounting huge pages (as a separate controller) ··· 262 3. Emelianov, Pavel. Resource controllers based on process cgroups 263 http://lkml.org/lkml/2007/3/6/198 264 4. Emelianov, Pavel. RSS controller based on process cgroups (v2) 265 + http://lkml.org/lkml/2007/4/9/78 266 5. Emelianov, Pavel. RSS controller based on process cgroups (v3) 267 http://lkml.org/lkml/2007/5/30/244 268 6. Menage, Paul. Control Groups v10, http://lwn.net/Articles/236032/ 269 7. Vaidyanathan, Srinivasan, Control Groups: Pagecache accounting and control 270 subsystem (v3), http://lwn.net/Articles/235534/ 271 + 8. Singh, Balbir. RSS controller v2 test results (lmbench), 272 http://lkml.org/lkml/2007/5/17/232 273 + 9. Singh, Balbir. RSS controller v2 AIM9 results 274 http://lkml.org/lkml/2007/5/18/1 275 + 10. Singh, Balbir. Memory controller v6 test results, 276 http://lkml.org/lkml/2007/8/19/36 277 + 11. Singh, Balbir. Memory controller introduction (v6), 278 + http://lkml.org/lkml/2007/8/17/69 279 12. Corbet, Jonathan, Controlling memory use in cgroups, 280 http://lwn.net/Articles/243795/