tree 221f00c864c50e7dc4719cb4de09292040567c55
parent dfc05c259e424e4160c66eab728f55cc4b53fd75
author Cliff Wickman <cpw@sgi.com> 1202372082 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1202402542 -0800

cgroups: mechanism to process each task in a cgroup

Provide cgroup_scan_tasks(), which iterates through every task in a cgroup,
calling a test function and a process function for each.  And call the process
function without holding the css_set_lock lock.

The idea is David Rientjes', predicting that such a function will make it much
easier in the future to extend things that require access to each task in a
cgroup without holding the lock,

[akpm@linux-foundation.org: cleanup]
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Cliff Wickman <cpw@sgi.com>
Cc: Paul Menage <menage@google.com>
Cc: Paul Jackson <pj@sgi.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>