diff options
author | Nadia Derbey <Nadia.Derbey@bull.net> | 2008-09-02 17:35:59 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-09-02 22:21:39 -0400 |
commit | 61e55d0576d0e7eb4fecaeb25b3618e035de5be1 (patch) | |
tree | 67e5d5b779e9c229d4a3af919e821b619ee314b1 | |
parent | b954185214c3b562c3fcc651e9ec69d421d76bfa (diff) |
ipc: document the new auto_msgmni proc file
Update Documentation/filesystems/proc.txt: it describes the file
auto_msgmni intoduced to enable/disable msgmni automatic recomputing upon
memory add/remove (see thread http://lkml.org/lkml/2008/7/4/27). Also
added a description for msgmni (this filex is only listed in
Documentation/sysctl/kernel.txt).
Signed-off-by: Nadia Derbey <Nadia.Derbey@bull.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r-- | Documentation/filesystems/proc.txt | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index 64557821ee59..394eb2cc1c39 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt | |||
@@ -1339,6 +1339,25 @@ Enables/Disables the protection of the per-process proc entries "maps" and | |||
1339 | "smaps". When enabled, the contents of these files are visible only to | 1339 | "smaps". When enabled, the contents of these files are visible only to |
1340 | readers that are allowed to ptrace() the given process. | 1340 | readers that are allowed to ptrace() the given process. |
1341 | 1341 | ||
1342 | msgmni | ||
1343 | ------ | ||
1344 | |||
1345 | Maximum number of message queue ids on the system. | ||
1346 | This value scales to the amount of lowmem. It is automatically recomputed | ||
1347 | upon memory add/remove or ipc namespace creation/removal. | ||
1348 | When a value is written into this file, msgmni's value becomes fixed, i.e. it | ||
1349 | is not recomputed anymore when one of the above events occurs. | ||
1350 | Use auto_msgmni to change this behavior. | ||
1351 | |||
1352 | auto_msgmni | ||
1353 | ----------- | ||
1354 | |||
1355 | Enables/Disables automatic recomputing of msgmni upon memory add/remove or | ||
1356 | upon ipc namespace creation/removal (see the msgmni description above). | ||
1357 | Echoing "1" into this file enables msgmni automatic recomputing. | ||
1358 | Echoing "0" turns it off. | ||
1359 | auto_msgmni default value is 1. | ||
1360 | |||
1342 | 1361 | ||
1343 | 2.4 /proc/sys/vm - The virtual memory subsystem | 1362 | 2.4 /proc/sys/vm - The virtual memory subsystem |
1344 | ----------------------------------------------- | 1363 | ----------------------------------------------- |