diff options
Diffstat (limited to 'include/linux/cgroup.h')
| -rw-r--r-- | include/linux/cgroup.h | 40 |
1 files changed, 30 insertions, 10 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index c90eaa803440..f8a030ced0c7 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -17,6 +17,7 @@ #include <linux/rwsem.h> #include <linux/idr.h> #include <linux/workqueue.h> +#include <linux/xattr.h> #ifdef CONFIG_CGROUPS @@ -45,17 +46,13 @@ extern const struct file_operations proc_cgroup_operations; /* Define the enumeration of all builtin cgroup subsystems */ #define SUBSYS(_x) _x ## _subsys_id, +#define IS_SUBSYS_ENABLED(option) IS_ENABLED(option) enum cgroup_subsys_id { #include <linux/cgroup_subsys.h> - CGROUP_BUILTIN_SUBSYS_COUNT + CGROUP_SUBSYS_COUNT, }; +#undef IS_SUBSYS_ENABLED #undef SUBSYS -/* - * This define indicates the maximum number of subsystems that can be loaded - * at once. We limit to this many since cgroupfs_root has subsys_bits to keep - * track of all of them. - */ -#define CGROUP_SUBSYS_COUNT (BITS_PER_BYTE*sizeof(unsigned long)) /* Per-subsystem/per-cgroup state maintained by the system. */ struct cgroup_subsys_state { @@ -216,6 +213,9 @@ struct cgroup { /* List of events which userspace want to receive */ struct list_head event_list; spinlock_t event_list_lock; + + /* directory xattrs */ + struct simple_xattrs xattrs; }; /* @@ -309,6 +309,9 @@ struct cftype { /* CFTYPE_* flags */ unsigned int flags; + /* file xattrs */ + struct simple_xattrs xattrs; + int (*open)(struct inode *inode, struct file *file); ssize_t (*read)(struct cgroup *cgrp, struct cftype *cft, struct file *file, @@ -394,7 +397,7 @@ struct cftype { */ struct cftype_set { struct list_head node; /* chained at subsys->cftsets */ - const struct cftype *cfts; + struct cftype *cfts; }; struct cgroup_scanner { @@ -406,8 +409,8 @@ struct cgroup_scanner { void *data; }; -int cgroup_add_cftypes(struct cgroup_subsys *ss, const struct cftype *cfts); -int cgroup_rm_cftypes(struct cgroup_subsys *ss, const struct cftype *cfts); +int cgroup_add_cftypes(struct cgroup_subsys *ss, struct cftype *cfts); +int cgroup_rm_cftypes(struct cgroup_subsys *ss, struct cftype *cfts); int cgroup_is_removed(const struct cgroup *cgrp); @@ -496,6 +499,21 @@ struct cgroup_subsys { */ bool __DEPRECATED_clear_css_refs; + /* + * If %false, this subsystem is properly hierarchical - + * configuration, resource accounting and restriction on a parent + * cgroup cover those of its children. If %true, hierarchy support + * is broken in some ways - some subsystems ignore hierarchy + * completely while others are only implemented half-way. + * + * It's now disallowed to create nested cgroups if the subsystem is + * broken and cgroup core will emit a warning message on such + * cases. Eventually, all subsystems will be made properly + * hierarchical and this will go away. + */ + bool broken_hierarchy; + bool warned_broken_hierarchy; + #define MAX_CGROUP_TYPE_NAMELEN 32 const char *name; @@ -521,7 +539,9 @@ struct cgroup_subsys { }; #define SUBSYS(_x) extern struct cgroup_subsys _x ## _subsys; +#define IS_SUBSYS_ENABLED(option) IS_BUILTIN(option) #include <linux/cgroup_subsys.h> +#undef IS_SUBSYS_ENABLED #undef SUBSYS static inline struct cgroup_subsys_state *cgroup_subsys_state( |