Re: trace_printk() support in trace-cmd

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On Tue, 2010-11-23 at 13:04 +0200, Avi Kivity wrote:
> On 11/16/2010 05:13 PM, Steven Rostedt wrote:
> > BTW, what does /debug/tracing/printk_formats show?
> >
> 
> Empty.
> 

So you have real trace_printk's not bprintk's?

That is, if the format is not a const, then we fall back to
__trace_printk(_THIS_IP_, fmt, args);

And this is a different object. I have not tested these in a while, I'll
give it a try.

But if your printks are bprintks, then the bug is in the kernel, since
that printk_formats needs to show something.

-- Steve

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