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cgroup: convert all non-memcg controllers to the new cftype interface

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Convert debug, freezer, cpuset, cpu_cgroup, cpuacct, net_prio, blkio,
net_cls and device controllers to use the new cftype based interface.
Termination entry is added to cftype arrays and populate callbacks are
replaced with cgroup_subsys->base_cftypes initializations.

This is functionally identical transformation.  There shouldn't be any
visible behavior change.

memcg is rather special and will be converted separately.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Paul Menage <paul@paulmenage.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Vivek Goyal <vgoyal@redhat.com>
This commit is contained in:
Tejun Heo 2012-04-01 12:09:55 -07:00
parent 676f7c8f84
commit 4baf6e3325
8 changed files with 29 additions and 76 deletions
Download patch file Download diff file Expand all files Collapse all files

33
kernel/cpuset.c
View file

@ -1765,29 +1765,18 @@ static struct cftype files[] = {
.write_u64 = cpuset_write_u64,
.private = FILE_SPREAD_SLAB,
},
{
.name = "memory_pressure_enabled",
.flags = CFTYPE_ONLY_ON_ROOT,
.read_u64 = cpuset_read_u64,
.write_u64 = cpuset_write_u64,
.private = FILE_MEMORY_PRESSURE_ENABLED,
},
{ } /* terminate */
};
static struct cftype cft_memory_pressure_enabled = {
.name = "memory_pressure_enabled",
.read_u64 = cpuset_read_u64,
.write_u64 = cpuset_write_u64,
.private = FILE_MEMORY_PRESSURE_ENABLED,
};
static int cpuset_populate(struct cgroup_subsys *ss, struct cgroup *cont)
{
int err;
err = cgroup_add_files(cont, ss, files, ARRAY_SIZE(files));
if (err)
return err;
/* memory_pressure_enabled is in root cpuset only */
if (!cont->parent)
err = cgroup_add_file(cont, ss,
&cft_memory_pressure_enabled);
return err;
}
/*
* post_clone() is called during cgroup_create() when the
* clone_children mount argument was specified. The cgroup
@ -1887,9 +1876,9 @@ struct cgroup_subsys cpuset_subsys = {
.destroy = cpuset_destroy,
.can_attach = cpuset_can_attach,
.attach = cpuset_attach,
.populate = cpuset_populate,
.post_clone = cpuset_post_clone,
.subsys_id = cpuset_subsys_id,
.base_cftypes = files,
.early_init = 1,
};