sched: Aggregate total task_group load

Maintain a global running sum of the average load seen on each cfs_rq belonging
to each task group so that it may be used in calculating an appropriate
shares:weight distribution.

Signed-off-by: Paul Turner <pjt@google.com>
Reviewed-by: Ben Segall <bsegall@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20120823141506.792901086@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
index 2d2e2b3c1bef..290892361a09 100644
--- a/kernel/sched/debug.c
+++ b/kernel/sched/debug.c
@@ -230,6 +230,10 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
                         cfs_rq->runnable_load_avg);
         SEQ_printf(m, "  .%-30s: %lld\n", "blocked_load_avg",
                         cfs_rq->blocked_load_avg);
+        SEQ_printf(m, "  .%-30s: %ld\n", "tg_load_avg",
+                        atomic64_read(&cfs_rq->tg->load_avg));
+        SEQ_printf(m, "  .%-30s: %lld\n", "tg_load_contrib",
+                        cfs_rq->tg_load_contrib);
 #endif
 
         print_cfs_group_stats(m, cpu, cfs_rq->tg);