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Subject[PATCH 14/16] cgroup: remove cgroup_taskset_cur_css() and cgroup_taskset_size()
Date
The two functions don't have any users left.  Remove them along with
cgroup_taskset->cur_cgrp.

Signed-off-by: Tejun Heo <tj@kernel.org>
---
include/linux/cgroup.h | 3 ---
kernel/cgroup.c | 30 ------------------------------
2 files changed, 33 deletions(-)

diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 3c67883..21887b6 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -526,9 +526,6 @@ bool cgroup_is_descendant(struct cgroup *cgrp, struct cgroup *ancestor);
struct cgroup_taskset;
struct task_struct *cgroup_taskset_first(struct cgroup_taskset *tset);
struct task_struct *cgroup_taskset_next(struct cgroup_taskset *tset);
-struct cgroup_subsys_state *cgroup_taskset_cur_css(struct cgroup_taskset *tset,
- int subsys_id);
-int cgroup_taskset_size(struct cgroup_taskset *tset);

/**
* cgroup_taskset_for_each - iterate cgroup_taskset
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index ac78311..0108753 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1645,7 +1645,6 @@ struct cgroup_taskset {
struct flex_array *tc_array;
int tc_array_len;
int idx;
- struct cgroup *cur_cgrp;
};

/**
@@ -1660,7 +1659,6 @@ struct task_struct *cgroup_taskset_first(struct cgroup_taskset *tset)
tset->idx = 0;
return cgroup_taskset_next(tset);
} else {
- tset->cur_cgrp = tset->single.cgrp;
return tset->single.task;
}
}
@@ -1681,39 +1679,11 @@ struct task_struct *cgroup_taskset_next(struct cgroup_taskset *tset)
return NULL;

tc = flex_array_get(tset->tc_array, tset->idx++);
- tset->cur_cgrp = tc->cgrp;
return tc->task;
}
EXPORT_SYMBOL_GPL(cgroup_taskset_next);

/**
- * cgroup_taskset_cur_css - return the matching css for the current task
- * @tset: taskset of interest
- * @subsys_id: the ID of the target subsystem
- *
- * Return the css for the current (last returned) task of @tset for
- * subsystem specified by @subsys_id. This function must be preceded by
- * either cgroup_taskset_first() or cgroup_taskset_next().
- */
-struct cgroup_subsys_state *cgroup_taskset_cur_css(struct cgroup_taskset *tset,
- int subsys_id)
-{
- return cgroup_css(tset->cur_cgrp, cgroup_subsys[subsys_id]);
-}
-EXPORT_SYMBOL_GPL(cgroup_taskset_cur_css);
-
-/**
- * cgroup_taskset_size - return the number of tasks in taskset
- * @tset: taskset of interest
- */
-int cgroup_taskset_size(struct cgroup_taskset *tset)
-{
- return tset->tc_array ? tset->tc_array_len : 1;
-}
-EXPORT_SYMBOL_GPL(cgroup_taskset_size);
-
-
-/**
* cgroup_task_migrate - move a task from one cgroup to another.
* @old_cgrp; the cgroup @tsk is being migrated from
* @tsk: the task being migrated
--
1.8.5.3


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