sched debug: BKL usage statistics
add per task and per rq BKL usage statistics.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/kernel/sched_debug.c b/kernel/sched_debug.c
index 57ee9d5..823b63a 100644
--- a/kernel/sched_debug.c
+++ b/kernel/sched_debug.c
@@ -136,6 +136,8 @@
SPLIT_NS(spread0));
SEQ_printf(m, " .%-30s: %ld\n", "nr_running", cfs_rq->nr_running);
SEQ_printf(m, " .%-30s: %ld\n", "load", cfs_rq->load.weight);
+ SEQ_printf(m, " .%-30s: %ld\n", "bkl_cnt",
+ rq->bkl_cnt);
}
static void print_cpu(struct seq_file *m, int cpu)
@@ -323,6 +325,7 @@
PN(se.exec_max);
PN(se.slice_max);
PN(se.wait_max);
+ P(sched_info.bkl_cnt);
#endif
SEQ_printf(m, "%-25s:%20Ld\n",
"nr_switches", (long long)(p->nvcsw + p->nivcsw));
@@ -350,6 +353,7 @@
p->se.exec_max = 0;
p->se.slice_max = 0;
p->se.wait_max = 0;
+ p->sched_info.bkl_cnt = 0;
#endif
p->se.sum_exec_runtime = 0;
p->se.prev_sum_exec_runtime = 0;