diff options
| author | Paul Menage <menage@google.com> | 2008-04-29 12:00:06 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-29 19:06:09 +0400 |
| commit | e73d2c61d1fcbd3621688ae457b49509c8d4c601 (patch) | |
| tree | e54b1543e786afd036b7884776a6753d8a8973f6 /include | |
| parent | 418d7d875ce7f33ef0d48d7cc3a95f31302dcf56 (diff) | |
| download | linux-e73d2c61d1fcbd3621688ae457b49509c8d4c601.tar.xz | |
CGroups _s64 files: add cgroups read_s64/write_s64 file methods
These patches add cgroups read_s64 and write_s64 control file methods (the
signed equivalent of read_u64/write_u64) and use them to implement the
cpu.rt_runtime_us control file in the CFS cgroup subsystem.
This patch:
These are the signed equivalents of the read_u64/write_u64 methods
Signed-off-by: Paul Menage <menage@google.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
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 b40fd5ee9a76..785a01cfb49d 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -216,6 +216,10 @@ struct cftype { */ u64 (*read_u64) (struct cgroup *cgrp, struct cftype *cft); /* + * read_s64() is a signed version of read_u64() + */ + s64 (*read_s64) (struct cgroup *cgrp, struct cftype *cft); + /* * read_map() is used for defining a map of key/value * pairs. It should call cb->fill(cb, key, value) for each * entry. The key/value pairs (and their ordering) should not @@ -234,6 +238,10 @@ struct cftype { * userspace. Use in place of write(); return 0 or error. */ int (*write_u64) (struct cgroup *cgrp, struct cftype *cft, u64 val); + /* + * write_s64() is a signed version of write_u64() + */ + int (*write_s64) (struct cgroup *cgrp, struct cftype *cft, s64 val); int (*release) (struct inode *inode, struct file *file); }; |