Messages in this thread | | | Date | Tue, 21 Jul 2015 09:48:47 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH tip/master 1/3] kprobes: Support blacklist functions in module |
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* Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> wrote:
> For some symbols we can do that. But it can conflict with other __section > attributes e.g. __sched, since a function must be placed in only one > section. [...]
The the scheduler is not modular, so __sched should not be a problem in itself.
> [...] So, IMHO, using section for expressing its attribute is not a good idea, > but I couldn't find another option in common function attribute. > > https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#Common-Function-Attributes > > Thus I've introduced NOKPROBE_SYMBOL macro which stores the target function > addresses (not the function itself) in the _kprobe_blacklist section.
So the question is, in which cases do modules need this?
Thanks,
Ingo
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