Messages in this thread | | | Subject | Re: [PATCH][GIT PULL] powerpc64/tracing: Add frame buffer to calls of trace_hardirqs_on/off | From | Benjamin Herrenschmidt <> | Date | Tue, 28 Dec 2010 08:38:37 +1100 |
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On Sat, 2010-12-25 at 16:04 -0500, Steven Rostedt wrote: > > Note, when CONFIG_IRQSOFF_TRACE is set, there's already a bit of > overhead :-) > > Anyway, I'll have to take a look at how the frame pointer is set up. > Or > we could also set up all stacks coming into the kernel to have a > "dummy" > frame pointer that wont hurt anything if we index into it. > > Anyway, I'm off till the new year, so I'll worry about it then ;-)
Right, might be simpler to just make them loop back onto themselves or something like that. I can have a look too if I get a chance.
Cheers, Ben.
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