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tracepoint: trace_sched_migrate_task(): remove parameter

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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>
This commit is contained in:
Mathieu Desnoyers 2009-05-05 16:49:59 +08:00 committed by Ingo Molnar
parent 20c8928abe
commit de1d728606
2 changed files with 4 additions and 4 deletions
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6
include/trace/events/sched.h
View File

@ -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;
),

2
kernel/sched.c
View File

@ -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)