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: Mathieu 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: Xiao 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: Ingo Molnar <mingo@elte.hu>

1 files changed, 3 insertions, 3 deletions

diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h
index ffa1cab586b9..dd4033cf5b09 100644
--- a/include/trace/events/sched.h
+++ b/include/trace/events/sched.h
@@ -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;
         ),