On 11/23/2010 04:30 PM, Steven Rostedt wrote:
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?
What are 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.
What I do is sprinkle trace_printk()s around my code and expect to see them interspersed with enabled tracepoints in 'trace-cmd report'. Is that not the intended behaviour?
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