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authorTejun Heo <tj@kernel.org>2013-12-05 12:28:03 -0500
committerTejun Heo <tj@kernel.org>2013-12-05 12:28:03 -0500
commit6e0755b08dd6a3b5260fafc6969268c2ba261300 (patch)
tree286c49c3daad213f77735c77881c533489fc176f /include/linux/cgroup.h
parent716f479d279fb456f58be44180d7479da75e5a4e (diff)
downloadop-kernel-dev-6e0755b08dd6a3b5260fafc6969268c2ba261300.zip
op-kernel-dev-6e0755b08dd6a3b5260fafc6969268c2ba261300.tar.gz
cgroup: remove cftype->read(), ->read_map() and ->write()
In preparation of conversion to kernfs, cgroup file handling is being consolidated so that it can be easily mapped to the seq_file based interface of kernfs. After recent updates, ->read() and ->read_map() don't have any user left and ->write() never had any user. Remove them. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Li Zefan <lizefan@huawei.com>
Diffstat (limited to 'include/linux/cgroup.h')
-rw-r--r--include/linux/cgroup.h25
1 files changed, 0 insertions, 25 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 50d8cc3..53e11da 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -387,16 +387,6 @@ struct css_set {
};
/*
- * cgroup_map_cb is an abstract callback API for reporting map-valued
- * control files
- */
-
-struct cgroup_map_cb {
- int (*fill)(struct cgroup_map_cb *cb, const char *key, u64 value);
- void *state;
-};
-
-/*
* struct cftype: handler definitions for cgroup control files
*
* When reading/writing to a file:
@@ -444,9 +434,6 @@ struct cftype {
struct cgroup_subsys *ss;
int (*open)(struct inode *inode, struct file *file);
- ssize_t (*read)(struct cgroup_subsys_state *css, struct cftype *cft,
- struct file *file,
- char __user *buf, size_t nbytes, loff_t *ppos);
/*
* read_u64() is a shortcut for the common case of returning a
* single integer. Use it in place of read()
@@ -457,24 +444,12 @@ struct cftype {
*/
s64 (*read_s64)(struct cgroup_subsys_state *css, 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
- * change between reboots.
- */
- int (*read_map)(struct cgroup_subsys_state *css, struct cftype *cft,
- struct cgroup_map_cb *cb);
- /*
* read_seq_string() is used for outputting a simple sequence
* using seqfile.
*/
int (*read_seq_string)(struct cgroup_subsys_state *css,
struct cftype *cft, struct seq_file *m);
- ssize_t (*write)(struct cgroup_subsys_state *css, struct cftype *cft,
- struct file *file,
- const char __user *buf, size_t nbytes, loff_t *ppos);
-
/*
* write_u64() is a shortcut for the common case of accepting
* a single integer (as parsed by simple_strtoull) from
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