From: <xiaoggchen@tencent.com>
To: <jasperwang@tencent.com>, <heddchen@tencent.com>
Cc: <mingo@redhat.com>, <peterz@infradead.org>,
<linux-kernel@vger.kernel.org>, <tj@kernel.org>,
<lizefan@huawei.com>, <hannes@cmpxchg.org>,
<cgroups@vger.kernel.org>,
chen xiaoguang <xiaoggchen@tencent.com>,
Newton Gao <newtongao@tencent.com>,
Shook Liu <shookliu@tencent.com>,
Zhiguang Peng <zgpeng@tencent.com>
Subject: [PATCH 5/5] sched/BT: add debug information for BT scheduling class
Date: Fri, 21 Jun 2019 15:45:57 +0800 [thread overview]
Message-ID: <1561103157-11246-6-git-send-email-xiaoggchen@tencent.com> (raw)
In-Reply-To: <1561103157-11246-1-git-send-email-xiaoggchen@tencent.com>
From: chen xiaoguang <xiaoggchen@tencent.com>
Signed-off-by: Newton Gao <newtongao@tencent.com>
Signed-off-by: Shook Liu <shookliu@tencent.com>
Signed-off-by: Zhiguang Peng <zgpeng@tencent.com>
Signed-off-by: Xiaoguang Chen <xiaoggchen@tencent.com>
---
kernel/sched/bt.c | 11 +++++++++++
kernel/sched/debug.c | 37 +++++++++++++++++++++++++++++++++++++
kernel/sched/sched.h | 3 +++
3 files changed, 51 insertions(+)
diff --git a/kernel/sched/bt.c b/kernel/sched/bt.c
index 87eb04f..11b4abd 100644
--- a/kernel/sched/bt.c
+++ b/kernel/sched/bt.c
@@ -1027,3 +1027,14 @@ static unsigned int get_rr_interval_bt(struct rq *rq, struct task_struct *task)
.update_curr = update_curr_bt,
};
+#ifdef CONFIG_SCHED_DEBUG
+void print_bt_stats(struct seq_file *m, int cpu)
+{
+ struct bt_rq *bt_rq;
+
+ rcu_read_lock();
+ bt_rq = &cpu_rq(cpu)->bt;
+ print_bt_rq(m, cpu, bt_rq);
+ rcu_read_unlock();
+}
+#endif
diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
index 678bfb9..44d0859 100644
--- a/kernel/sched/debug.c
+++ b/kernel/sched/debug.c
@@ -497,6 +497,43 @@ static void print_rq(struct seq_file *m, struct rq *rq, int rq_cpu)
rcu_read_unlock();
}
+void print_bt_rq(struct seq_file *m, int cpu, struct bt_rq *bt_rq)
+{
+ s64 MIN_vruntime = -1, min_vruntime, max_vruntime = -1,
+ spread, rq0_min_vruntime, spread0;
+ struct rq *rq = cpu_rq(cpu);
+ unsigned long flags;
+
+ SEQ_printf(m, "\nbt_rq[%d]:\n", cpu);
+
+ SEQ_printf(m, " .%-30s: %lld.%06ld\n", "exec_clock",
+ SPLIT_NS(bt_rq->exec_clock));
+
+ raw_spin_lock_irqsave(&rq->lock, flags);
+ if (bt_rq->rb_leftmost)
+ MIN_vruntime = (__pick_first_bt_entity(bt_rq))->vruntime;
+ min_vruntime = bt_rq->min_vruntime;
+ rq0_min_vruntime = cpu_rq(0)->bt.min_vruntime;
+ raw_spin_unlock_irqrestore(&rq->lock, flags);
+ SEQ_printf(m, " .%-30s: %lld.%06ld\n", "MIN_vruntime",
+ SPLIT_NS(MIN_vruntime));
+ SEQ_printf(m, " .%-30s: %lld.%06ld\n", "min_vruntime",
+ SPLIT_NS(min_vruntime));
+ SEQ_printf(m, " .%-30s: %lld.%06ld\n", "max_vruntime",
+ SPLIT_NS(max_vruntime));
+ spread = max_vruntime - MIN_vruntime;
+ SEQ_printf(m, " .%-30s: %lld.%06ld\n", "spread",
+ SPLIT_NS(spread));
+ spread0 = min_vruntime - rq0_min_vruntime;
+ SEQ_printf(m, " .%-30s: %lld.%06ld\n", "spread0",
+ SPLIT_NS(spread0));
+ SEQ_printf(m, " .%-30s: %d\n", "nr_spread_over",
+ bt_rq->nr_spread_over);
+ SEQ_printf(m, " .%-30s: %d\n", "nr_running", bt_rq->bt_nr_running);
+ SEQ_printf(m, " .%-30s: %ld\n", "load", bt_rq->load.weight);
+}
+
+
void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
{
s64 MIN_vruntime = -1, min_vruntime, max_vruntime = -1,
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 403eec6..749f580 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -2120,6 +2120,8 @@ static inline void double_rq_unlock(struct rq *rq1, struct rq *rq2)
extern struct sched_entity *__pick_first_entity(struct cfs_rq *cfs_rq);
extern struct sched_entity *__pick_last_entity(struct cfs_rq *cfs_rq);
+extern struct sched_bt_entity *__pick_first_bt_entity(struct bt_rq *bt_rq);
+
#ifdef CONFIG_SCHED_DEBUG
extern bool sched_debug_enabled;
@@ -2129,6 +2131,7 @@ static inline void double_rq_unlock(struct rq *rq1, struct rq *rq2)
extern void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq);
extern void print_rt_rq(struct seq_file *m, int cpu, struct rt_rq *rt_rq);
extern void print_dl_rq(struct seq_file *m, int cpu, struct dl_rq *dl_rq);
+extern void print_bt_rq(struct seq_file *m, int cpu, struct bt_rq *bt_rq);
#ifdef CONFIG_NUMA_BALANCING
extern void
show_numa_stats(struct task_struct *p, struct seq_file *m);
--
1.8.3.1
next prev parent reply other threads:[~2019-06-21 7:55 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-21 7:45 [PATCH 0/5] BT scheduling class xiaoggchen
2019-06-21 7:45 ` [PATCH 1/5] sched/BT: add BT scheduling entity xiaoggchen
2019-06-21 7:45 ` [PATCH 2/5] sched/BT: implement the BT scheduling class xiaoggchen
2019-06-21 7:45 ` [PATCH 3/5] sched/BT: extend the priority for " xiaoggchen
2019-06-21 7:45 ` [PATCH 4/5] sched/BT: account the cpu time " xiaoggchen
2019-06-21 7:45 ` xiaoggchen [this message]
2019-06-21 12:36 ` [PATCH 0/5] " Peter Zijlstra
2019-06-21 13:03 ` Peter Zijlstra
2019-06-21 13:26 ` Valentin Schneider
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