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authorLi Zefan <lizf@cn.fujitsu.com>2008-07-04 20:59:55 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-04 21:40:08 +0400
commitbef67c5a7d3a9c45e091e36625c09c0c811e2672 (patch)
tree9e26d7896d6bf96ac8f65cf1b47955601705a921 /Documentation
parent4e0d13cbb71de2b1baf71ddd3c14f7ba8da810e5 (diff)
downloadlinux-bef67c5a7d3a9c45e091e36625c09c0c811e2672.tar.xz
cgroups: document the effect of attaching PID 0 to a cgroup
Document that a pid of zero(0) can be used to refer to the current task when attaching a task to a cgroup, as in the following usage: # echo 0 > /dev/cgroup/tasks This is consistent with existing cpuset behavior. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Paul Jackson <pj@sgi.com> Acked-by: Dhaval Giani <dhaval@linux.vnet.ibm.com> Cc: Paul Menage <menage@google.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Andrea Righi <righi.andrea@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/cgroups.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/cgroups.txt b/Documentation/cgroups.txt
index 824fc0274471..d9014aa0eb68 100644
--- a/Documentation/cgroups.txt
+++ b/Documentation/cgroups.txt
@@ -390,6 +390,10 @@ If you have several tasks to attach, you have to do it one after another:
...
# /bin/echo PIDn > tasks
+You can attach the current shell task by echoing 0:
+
+# echo 0 > tasks
+
3. Kernel API
=============