Messages in this thread | | | Subject | Re: [PATCH] tracing: add trace console | From | Johannes Berg <> | Date | Wed, 16 Nov 2011 17:45:02 +0100 |
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On Wed, 2011-11-16 at 11:41 -0500, Steven Rostedt wrote:
> > That's possible, basically adding a tracepoints to printk -- that would > > even catch everything and not require setting the console level (which > > has its advantages too since other consoles might be slow). > > > > It's a completely different thing though. I did it this way because it > > was trivial to do out of tree for a quick test I was doing yesterday. > > Doing it the other way is obviously more intrusive in core code. > > I'm not sure it would be too invasive. Think you could get something > working?
I briefly looked at it just after writing the email, but quickly got lost in printk.c because of the multi-line handling it has. We could instead trace each call to printk(), so the multi-line stuff would end up in multiple events, but all of that code is too much vodoo for me :)
johannes
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