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Commit de1d7286 authored by Mathieu Desnoyers's avatar Mathieu Desnoyers Committed by Ingo Molnar
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tracepoint: trace_sched_migrate_task(): remove parameter 



The orig_cpu parameter in trace_sched_migrate_task() is not necessary,
it can be got by using task_cpu(p) in the probe.

[ Impact: micro-optimization ]

Signed-off-by: default avatarMathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
[ modified from Mathieu's patch. The original patch is at:
  http://marc.info/?l=linux-kernel&m=123791201716239&w=2

 ]
Signed-off-by: default avatarXiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: zhaolei@cn.fujitsu.com
Cc: laijs@cn.fujitsu.com
LKML-Reference: <49FFFDB7.1050402@cn.fujitsu.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 20c8928a

include/trace/events/sched.h

+3 −3
Original line number Diff line number Diff line
@@ -180,9 +180,9 @@ TRACE_EVENT(sched_switch, 
 */

TRACE_EVENT(sched_migrate_task,



	TP_PROTO(struct task_struct *p, int orig_cpu, int dest_cpu),

	TP_PROTO(struct task_struct *p, int dest_cpu),



	TP_ARGS(p, orig_cpu, dest_cpu),

	TP_ARGS(p, dest_cpu),



	TP_STRUCT__entry(

		__array(	char,	comm,	TASK_COMM_LEN	)
@@ -196,7 +196,7 @@ TRACE_EVENT(sched_migrate_task, 
		memcpy(__entry->comm, p->comm, TASK_COMM_LEN);

		__entry->pid		= p->pid;

		__entry->prio		= p->prio;

		__entry->orig_cpu	= orig_cpu;

		__entry->orig_cpu	= task_cpu(p);

		__entry->dest_cpu	= dest_cpu;

	),

kernel/sched.c

+1 −1
Original line number Diff line number Diff line
@@ -1954,7 +1954,7 @@ void set_task_cpu(struct task_struct *p, unsigned int new_cpu) 


	clock_offset = old_rq->clock - new_rq->clock;



	trace_sched_migrate_task(p, task_cpu(p), new_cpu);

	trace_sched_migrate_task(p, new_cpu);



#ifdef CONFIG_SCHEDSTATS

	if (p->se.wait_start)