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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2008-04-19 19:45:00 +0200
committerIngo Molnar <mingo@elte.hu>2008-04-19 19:45:00 +0200
commit7ba2e74ab5a0518bc953042952dd165724bc70c9 (patch)
treec6a1495130ebef022f21cb3b7acde0842588acb4
parent8f1bc385cfbab474db6c27b5af1e439614f3025c (diff)
downloadop-kernel-dev-7ba2e74ab5a0518bc953042952dd165724bc70c9.zip
op-kernel-dev-7ba2e74ab5a0518bc953042952dd165724bc70c9.tar.gz
sched: debug: show a weight tree
Print a tree of weights. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--kernel/sched_fair.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index d72e8b41..89fa32b 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -1611,6 +1611,30 @@ static const struct sched_class fair_sched_class = {
};
#ifdef CONFIG_SCHED_DEBUG
+static void
+print_cfs_rq_tasks(struct seq_file *m, struct cfs_rq *cfs_rq, int depth)
+{
+ struct sched_entity *se;
+
+ if (!cfs_rq)
+ return;
+
+ list_for_each_entry_rcu(se, &cfs_rq->tasks, group_node) {
+ int i;
+
+ for (i = depth; i; i--)
+ seq_puts(m, " ");
+
+ seq_printf(m, "%lu %s %lu\n",
+ se->load.weight,
+ entity_is_task(se) ? "T" : "G",
+ calc_delta_weight(SCHED_LOAD_SCALE, se)
+ );
+ if (!entity_is_task(se))
+ print_cfs_rq_tasks(m, group_cfs_rq(se), depth + 1);
+ }
+}
+
static void print_cfs_stats(struct seq_file *m, int cpu)
{
struct cfs_rq *cfs_rq;
@@ -1618,6 +1642,9 @@ static void print_cfs_stats(struct seq_file *m, int cpu)
rcu_read_lock();
for_each_leaf_cfs_rq(cpu_rq(cpu), cfs_rq)
print_cfs_rq(m, cpu, cfs_rq);
+
+ seq_printf(m, "\nWeight tree:\n");
+ print_cfs_rq_tasks(m, &cpu_rq(cpu)->cfs, 1);
rcu_read_unlock();
}
#endif
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