From 81eeaf0411204f52af8ef78ff107cfca2fcfec1d Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 8 Aug 2013 20:11:26 -0400 Subject: cgroup: make cftype->[un]register_event() deal with cgroup_subsys_state instead of cgroup cgroup is in the process of converting to css (cgroup_subsys_state) from cgroup as the principal subsystem interface handle. This is mostly to prepare for the unified hierarchy support where css's will be created and destroyed dynamically but also helps cleaning up subsystem implementations as css is usually what they are interested in anyway. cftype->[un]register_event() is among the remaining couple interfaces which still use struct cgroup. Convert it to cgroup_subsys_state. The conversion is mostly mechanical and removes the last users of mem_cgroup_from_cont() and cg_to_vmpressure(), which are removed. v2: indentation update as suggested by Li Zefan. Signed-off-by: Tejun Heo Acked-by: Li Zefan Acked-by: Michal Hocko Cc: Johannes Weiner Cc: Balbir Singh --- include/linux/vmpressure.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux/vmpressure.h') diff --git a/include/linux/vmpressure.h b/include/linux/vmpressure.h index 76be077340ea..b239482bd39d 100644 --- a/include/linux/vmpressure.h +++ b/include/linux/vmpressure.h @@ -33,10 +33,12 @@ extern void vmpressure_init(struct vmpressure *vmpr); extern struct vmpressure *memcg_to_vmpressure(struct mem_cgroup *memcg); extern struct cgroup_subsys_state *vmpressure_to_css(struct vmpressure *vmpr); extern struct vmpressure *css_to_vmpressure(struct cgroup_subsys_state *css); -extern int vmpressure_register_event(struct cgroup *cg, struct cftype *cft, +extern int vmpressure_register_event(struct cgroup_subsys_state *css, + struct cftype *cft, struct eventfd_ctx *eventfd, const char *args); -extern void vmpressure_unregister_event(struct cgroup *cg, struct cftype *cft, +extern void vmpressure_unregister_event(struct cgroup_subsys_state *css, + struct cftype *cft, struct eventfd_ctx *eventfd); #else static inline void vmpressure(gfp_t gfp, struct mem_cgroup *memcg, -- cgit v1.2.3