* Lei Wen <[email protected]> [2013-07-01 15:10:32]:
> Since we could track task in the entity level now, we may want to
> investigate tasks' running status by recording the trace info, so that
> could make some tuning if needed.
>
> Signed-off-by: Lei Wen <[email protected]>
> ---
> include/trace/events/sched.h | 73
> ++++++++++++++++++++++++++++++++++++++++++
> kernel/sched/fair.c | 29 +++++++++++++++--
> 2 files changed, 100 insertions(+), 2 deletions(-)
[...]
>
> +TRACE_EVENT(sched_cfs_rq_runnable_load,
> +
> + TP_PROTO(int cpu, unsigned long load, unsigned long total),
> +
> + TP_ARGS(cpu, load, total),
> +
> + TP_STRUCT__entry(
> + __field(int, cpu)
> + __field(unsigned long, load)
> + __field(unsigned long, total)
> + ),
> +
> + TP_fast_assign(
> + __entry->cpu = cpu;
> + __entry->load = load;
> + __entry->total = total;
> + ),
> +
> + TP_printk("cpu=%d avg=%lu total=%lu",
> + __entry->cpu,
> + __entry->load,
> + __entry->total)
> +);
> +
> +TRACE_EVENT(sched_cfs_rq_blocked_load,
> +
> + TP_PROTO(int cpu, unsigned long load, unsigned long total),
> +
> + TP_ARGS(cpu, load, total),
> +
> + TP_STRUCT__entry(
> + __field(int, cpu)
> + __field(unsigned long, load)
> + __field(unsigned long, total)
> + ),
> +
> + TP_fast_assign(
> + __entry->cpu = cpu;
> + __entry->load = load;
> + __entry->total = total;
> + ),
> +
> + TP_printk("cpu=%d avg=%lu total=%lu",
> + __entry->cpu,
> + __entry->load,
> + __entry->total)
> +);
> +
> #endif /* _TRACE_SCHED_H */
above trace points are same and be folded using EVENT_CLASS:
+DECLARE_EVENT_CLASS(sched_cfs_rq_load_contri_template,
+
+ TP_PROTO(int cpu, unsigned long load, unsigned long total),
+
+ TP_ARGS(cpu, load, total),
+
+ TP_STRUCT__entry(
+ __field(int, cpu)
+ __field(unsigned long, load)
+ __field(unsigned long, total)
+ ),
+
+ TP_fast_assign(
+ __entry->cpu = cpu;
+ __entry->load = load;
+ __entry->total = total;
+ ),
+
+ TP_printk("cpu=%d avg=%lu total=%lu",
+ __entry->cpu,
+ __entry->load,
+ __entry->total)
+);
+
+DEFINE_EVENT(sched_cfs_rq_load_contri_template, sched_cfs_rq_runnable_load,
+ TP_PROTO(int cpu, unsigned long load, unsigned long total),
+ TP_ARGS(cpu, load, total));
+
+DEFINE_EVENT(sched_cfs_rq_load_contri_template, sched_cfs_rq_blocked_load,
+ TP_PROTO(int cpu, unsigned long load, unsigned long total),
+ TP_ARGS(cpu, load, total));
+
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