diff options
Diffstat (limited to 'include/linux/cgroup-defs.h')
| -rw-r--r-- | include/linux/cgroup-defs.h | 29 |
1 files changed, 16 insertions, 13 deletions
diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h index 04cb42419310..60d62fe97dc3 100644 --- a/include/linux/cgroup-defs.h +++ b/include/linux/cgroup-defs.h @@ -258,6 +258,10 @@ struct css_set { struct rcu_head rcu_head; }; +struct cgroup_base_stat { + struct task_cputime cputime; +}; + /* * rstat - cgroup scalable recursive statistics. Accounting is done * per-cpu in cgroup_rstat_cpu which is then lazily propagated up the @@ -273,20 +277,24 @@ struct css_set { * aren't active and stat may be read frequently. The combination can * become very expensive. By propagating selectively, increasing reading * frequency decreases the cost of each read. + * + * This struct hosts both the fields which implement the above - + * updated_children and updated_next - and the fields which track basic + * resource statistics on top of it - bsync, bstat and last_bstat. */ struct cgroup_rstat_cpu { /* - * ->sync protects all the current counters. These are the only - * fields which get updated in the hot path. + * ->bsync protects ->bstat. These are the only fields which get + * updated in the hot path. */ - struct u64_stats_sync sync; - struct task_cputime cputime; + struct u64_stats_sync bsync; + struct cgroup_base_stat bstat; /* * Snapshots at the last reading. These are used to calculate the * deltas to propagate to the global counters. */ - struct task_cputime last_cputime; + struct cgroup_base_stat last_bstat; /* * Child cgroups with stat updates on this cpu since the last read @@ -303,12 +311,6 @@ struct cgroup_rstat_cpu { struct cgroup *updated_next; /* NULL iff not on the list */ }; -struct cgroup_stat { - /* per-cpu statistics are collected into the folowing global counters */ - struct task_cputime cputime; - struct prev_cputime prev_cputime; -}; - struct cgroup { /* self css with NULL ->ss, points back to this cgroup */ struct cgroup_subsys_state self; @@ -412,8 +414,9 @@ struct cgroup { struct cgroup_rstat_cpu __percpu *rstat_cpu; /* cgroup basic resource statistics */ - struct cgroup_stat pending_stat; /* pending from children */ - struct cgroup_stat stat; + struct cgroup_base_stat pending_bstat; /* pending from children */ + struct cgroup_base_stat bstat; + struct prev_cputime prev_cputime; /* for printing out cputime */ /* * list of pidlists, up to two for each namespace (one for procs, one |