CGroups _s64 files: add cgroups read_s64/write_s64 file methods

[linux-2.6-omap-h63xx.git] / include / linux / cgroup.h

diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index b40fd5ee9a76e58bffabeaf8143622744126cb5f..785a01cfb49d8d7519df62fb38629ac16fb38120 100644 (file)
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -215,6 +215,10 @@ struct cftype {
         * single integer. Use it in place of read()
         */
        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
@@ -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);
 };