[RFC PATCH 2/3] Djprobe improvement patches (Re: Dynamic djprobe)

[Masami Hiramatsu]

Hi,

This patch is for finding the executing address hidden by nested 
interrupts. I introduced an address_stack structure, and 
push/pop_iaddr() macros. push_iaddr() stores interrupted executing 
address into address_stack percpu stacks and increments a counter. 
pop_iaddr() just decrements the counter. We can find hidden addresses 
from address_stack and check it.
But Satoshi pointed out the possibility of performance degradation. So I 
am developing another patch to find hidden address from current thread’s 
stack.

Thanks,

-- 
Masami HIRAMATSU
2nd Research Dept.
Hitachi, Ltd., Systems Development Laboratory
E-mail: hiramatu@sdl.hitachi.co.jp


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