diff options
| author | Paul Menage <menage@google.com> | 2007-10-19 08:39:33 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-19 20:53:36 +0200 |
| commit | 355e0c48b757b7fcc79ccb98fda8105ed37a1598 (patch) | |
| tree | f9687961979a808e46620f4bdf9af05de2fd68e2 /include | |
| parent | Task Control Groups: add tasks file interface (diff) | |
| download | linux-355e0c48b757b7fcc79ccb98fda8105ed37a1598.tar.xz linux-355e0c48b757b7fcc79ccb98fda8105ed37a1598.zip | |
Add cgroup write_uint() helper method
Add write_uint() helper method for cgroup subsystems
This helper is analagous to the read_uint() helper method for
reporting u64 values to userspace. It's designed to reduce the amount
of boilerplate requierd for creating new cgroup subsystems.
Signed-off-by: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/cgroup.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index e2dd44f68f97..e95143c884b2 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -125,6 +125,14 @@ struct cftype { ssize_t (*write) (struct cgroup *cont, struct cftype *cft, struct file *file, const char __user *buf, size_t nbytes, loff_t *ppos); + + /* + * write_uint() is a shortcut for the common case of accepting + * a single integer (as parsed by simple_strtoull) from + * userspace. Use in place of write(); return 0 or error. + */ + int (*write_uint) (struct cgroup *cont, struct cftype *cft, u64 val); + int (*release) (struct inode *inode, struct file *file); }; |