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sched debug: BKL usage statistics

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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>
This commit is contained in:
Ingo Molnar 2007-10-15 17:00:10 +02:00
parent de8d585a12
commit b8efb56172
3 changed files with 17 additions and 0 deletions
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4
kernel/sched_debug.c
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@ -136,6 +136,8 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
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 @@ void proc_sched_show_task(struct task_struct *p, struct seq_file *m)
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 @@ void proc_sched_set_task(struct task_struct *p)
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;