From: Lukasz Luba <l.luba@partner.samsung.com>
Date: Wed, 22 Aug 2018 16:56:12 +0000 (+0200)
Subject: trace: sched: add new trace events for tracking migrations
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=410daaaa656105adf4b12066d91af8e8db9cad60;p=platform%2Fkernel%2Flinux-exynos.git

trace: sched: add new trace events for tracking migrations

This patch adds some new traces which can help during load balance
and/or migration investigations.

Signed-off-by: Lukasz Luba <l.luba@partner.samsung.com>
---

diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h
index 79d3af7e627e..a251458d2a27 100644
--- a/include/trace/events/sched.h
+++ b/include/trace/events/sched.h
@@ -777,6 +777,114 @@ TRACE_EVENT(sched_util_est_cpu,
 		  __entry->util_avg,
 		  __entry->util_est_runnable)
 );
+
+
+TRACE_EVENT(sched_active_lb_stop_cpu,
+
+	TP_PROTO(int busiest_cpu, int target_cpu),
+
+	TP_ARGS(busiest_cpu, target_cpu),
+
+	TP_STRUCT__entry(
+		__field(	int,	busiest_cpu	)
+		__field(	int,	target_cpu	)
+	),
+
+	TP_fast_assign(
+		__entry->busiest_cpu	= busiest_cpu;
+		__entry->target_cpu	= target_cpu;
+	),
+
+	TP_printk("busiest_cpu=%d target_cpu=%d",
+		  __entry->busiest_cpu,
+		  __entry->target_cpu)
+);
+
+TRACE_EVENT(sched_can_migrate_task,
+
+	TP_PROTO(int pid, int migrate, int task_hot, int busiest_cpu, int target_cpu),
+
+	TP_ARGS(pid, migrate, task_hot, busiest_cpu, target_cpu),
+
+	TP_STRUCT__entry(
+		__field(	int,	pid		)
+		__field(	int,	migrate		)
+		__field(	int,	task_hot	)
+		__field(	int,	busiest_cpu	)
+		__field(	int,	target_cpu	)
+	),
+
+	TP_fast_assign(
+		__entry->pid		= pid;
+		__entry->migrate	= migrate;
+		__entry->task_hot	= task_hot;
+		__entry->busiest_cpu	= busiest_cpu;
+		__entry->target_cpu	= target_cpu;
+	),
+
+	TP_printk("pid=%d migrate=%d task_hot=%d src_cpu=%d dst_cpu=%d",
+		  __entry->pid,
+		  __entry->migrate,
+		  __entry->task_hot,
+		  __entry->busiest_cpu,
+		  __entry->target_cpu)
+);
+
+TRACE_EVENT(sched_migrate_capacity_comparison,
+
+	TP_PROTO(int src_cpu, int dst_cpu, int src_cpu_cap, int dst_cpu_cap,
+		 int src_cpu_util, int dst_cpu_util, int needed),
+
+	TP_ARGS(src_cpu, dst_cpu, src_cpu_cap, dst_cpu_cap, src_cpu_util,
+		dst_cpu_util, needed),
+
+	TP_STRUCT__entry(
+		__field(	int,	src_cpu		)
+		__field(	int,	dst_cpu		)
+		__field(	int,	src_cpu_cap	)
+		__field(	int,	dst_cpu_cap	)
+		__field(	int,	src_cpu_util	)
+		__field(	int,	dst_cpu_util	)
+		__field(	int,	needed		)
+	),
+
+	TP_fast_assign(
+		__entry->src_cpu	= src_cpu;
+		__entry->dst_cpu	= dst_cpu;
+		__entry->src_cpu_cap	= src_cpu_cap;
+		__entry->dst_cpu_cap	= dst_cpu_cap;
+		__entry->src_cpu_util	= src_cpu_util;
+		__entry->dst_cpu_util	= dst_cpu_util;
+		__entry->needed		= needed;
+	),
+
+	TP_printk("src_cpu=%d dst_cpu=%d src_cpu_cap=%d dst_cpu_cap=%d src_cpu_util=%d dst_cpu_util=%d needed=%d",
+		__entry->src_cpu,
+		__entry->dst_cpu,
+		__entry->src_cpu_cap,
+		__entry->dst_cpu_cap,
+		__entry->src_cpu_util,
+		__entry->dst_cpu_util,
+		__entry->needed)
+);
+
+TRACE_EVENT(sched_need_active_balance,
+
+	TP_PROTO(int needed),
+
+	TP_ARGS(needed),
+
+	TP_STRUCT__entry(
+		__field(	int,	needed	)
+	),
+
+	TP_fast_assign(
+		__entry->needed	= needed;
+	),
+
+	TP_printk("needed=%d", __entry->needed)
+);
+
 #endif /* CONFIG_SMP */
 #endif /* _TRACE_SCHED_H */