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tracing/sched: show CPU task wakes up on in trace event 

While debugging the scheduler push / pull algorithm, I found
it very annoying that the sched wake up events did not show
the CPU that the task was waking on. In order to analyze the
scheduler, I needed that information.

This patch adds recording of the CPU that a task is waking up
on.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt 2009-08-06 14:59:32 -04:00 committed by Steven Rostedt
parent d88cb58232
commit f0693c8bd5
1 changed files with 8 additions and 4 deletions
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12
include/trace/events/sched.h
View File

@ -94,6 +94,7 @@ TRACE_EVENT(sched_wakeup,
__field( pid_t, pid )
__field( int, prio )
__field( int, success )
__field( int, cpu )
),
TP_fast_assign(
@ -101,11 +102,12 @@ TRACE_EVENT(sched_wakeup,
__entry->pid = p->pid;
__entry->prio = p->prio;
__entry->success = success;
__entry->cpu = task_cpu(p);
),
TP_printk("task %s:%d [%d] success=%d",
TP_printk("task %s:%d [%d] success=%d [%03d]",
__entry->comm, __entry->pid, __entry->prio,
__entry->success)
__entry->success, __entry->cpu)
);
/*
@ -125,6 +127,7 @@ TRACE_EVENT(sched_wakeup_new,
__field( pid_t, pid )
__field( int, prio )
__field( int, success )
__field( int, cpu )
),
TP_fast_assign(
@ -132,11 +135,12 @@ TRACE_EVENT(sched_wakeup_new,
__entry->pid = p->pid;
__entry->prio = p->prio;
__entry->success = success;
__entry->cpu = task_cpu(p);
),
TP_printk("task %s:%d [%d] success=%d",
TP_printk("task %s:%d [%d] success=%d [%03d]",
__entry->comm, __entry->pid, __entry->prio,
__entry->success)
__entry->success, __entry->cpu)
);
/*