Re: [PATCH 2/2] ftrace: Output REC->var instead of __entry->varfor trace format

From: Ingo Molnar
Date: Wed Apr 08 2009 - 08:15:11 EST



* Zhaolei <zhaolei@xxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxx>
> ---
> 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

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

Ingo
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