On 2012/9/12 22:12, Daniel Wagner wrote:

From: Daniel Wagner <redacted>

Before we are able to define all subsystem ids at compile time we need
a more fine grained control what gets defined when we include
cgroup_subsys.h. For example we define the enums for the subsystems or
to declare for struct cgroup_subsys (builtin subsystem) by including
cgroup_subsys.h and defining SUBSYS accordingly.

Currently, the decision if a subsys is used is defined inside the
header by testing if CONFIG_*=y is true. By moving this test outside
of cgroup_subsys.h we are able to control it on the include level.

This is done by introducing IS_SUBSYS_ENABLED which then is defined
according the task, e.g. is CONFIG_*=y or CONFIG_*=m.

Signed-off-by: Daniel Wagner <redacted>
Cc: Gao feng <redacted>
Cc: Jamal Hadi Salim <jhs-jkUAjuhPggJWk0Htik3J/w@public.gmane.org>
Cc: John Fastabend <redacted>
Cc: Li Zefan <redacted>
Cc: Neil Horman <redacted>
Cc: Tejun Heo <redacted>
Cc: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org

Acked-by: Li Zefan <redacted>

---
 include/linux/cgroup.h        |  4 ++++
 include/linux/cgroup_subsys.h | 24 ++++++++++++------------
 kernel/cgroup.c               |  1 +
 3 files changed, 17 insertions(+), 12 deletions(-)