On Sunday 13 May 2012 08:16:00 Sam Ravnborg wrote: > Do we have any archs that does runtime patching of function calls? Matthew already mentioned the x86 altinstruction support (which helps with building smp kernels which run well on UP setups), but in case it helps, there's the ftrace stuff that runtime patches calls to mcount. there's HAVE_FTRACE_MCOUNT_RECORD and HAVE_DYNAMIC_FTRACE which Documentation/trace/ftrace-design.txt covers. -mike
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