* From: "Ingo Molnar" <mingo@elte.hu>
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> 
> * Zhaolei <zhaolei@cn.fujitsu.com> wrote:
> 
>> print fmt: "irq=%d return=%s", __entry->irq, __entry->ret ? \"handled\" : \"unhandled\"
>> 
>> "__entry" should be convert to "REC" by __stringify() macro.
>> 
>> Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
>> ---
>>  kernel/trace/trace_events_stage_2.h |    4 ++--
>>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> good fix, but it is causing build trouble when applied to latest 
> tip/master:
> 
> include/trace/sched_event_types.h:257:1: error: macro "__stringify" 
> passed 3 arguments, but takes just 1
Hello, Ingo

I tested this patch before send, but haven't see this error.
env is: gcc version 4.1.2 20070626 (Red Hat 4.1.2-14)

This patch need on top of my previous one:
[PATCH 1/2] Make __stringify support variable argument macro
Maybe this is the reason.

Thanks
Zhaolei

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> 
> see: http://people.redhat.com/mingo/tip.git/README
> 
> Ingo
> 
>