diff options
Diffstat (limited to 'include/linux/cgroup-defs.h')
| -rw-r--r-- | include/linux/cgroup-defs.h | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h index 133531fcfb33..04cb42419310 100644 --- a/include/linux/cgroup-defs.h +++ b/include/linux/cgroup-defs.h @@ -259,11 +259,11 @@ struct css_set { }; /* - * cgroup basic resource usage statistics. Accounting is done per-cpu in - * cgroup_cpu_stat which is then lazily propagated up the hierarchy on - * reads. + * rstat - cgroup scalable recursive statistics. Accounting is done + * per-cpu in cgroup_rstat_cpu which is then lazily propagated up the + * hierarchy on reads. * - * When a stat gets updated, the cgroup_cpu_stat and its ancestors are + * When a stat gets updated, the cgroup_rstat_cpu and its ancestors are * linked into the updated tree. On the following read, propagation only * considers and consumes the updated tree. This makes reading O(the * number of descendants which have been active since last read) instead of @@ -274,7 +274,7 @@ struct css_set { * become very expensive. By propagating selectively, increasing reading * frequency decreases the cost of each read. */ -struct cgroup_cpu_stat { +struct cgroup_rstat_cpu { /* * ->sync protects all the current counters. These are the only * fields which get updated in the hot path. @@ -297,7 +297,7 @@ struct cgroup_cpu_stat { * to the cgroup makes it unnecessary for each per-cpu struct to * point back to the associated cgroup. * - * Protected by per-cpu cgroup_cpu_stat_lock. + * Protected by per-cpu cgroup_rstat_cpu_lock. */ struct cgroup *updated_children; /* terminated by self cgroup */ struct cgroup *updated_next; /* NULL iff not on the list */ @@ -408,8 +408,10 @@ struct cgroup { */ struct cgroup *dom_cgrp; + /* per-cpu recursive resource statistics */ + struct cgroup_rstat_cpu __percpu *rstat_cpu; + /* cgroup basic resource statistics */ - struct cgroup_cpu_stat __percpu *cpu_stat; struct cgroup_stat pending_stat; /* pending from children */ struct cgroup_stat stat; |