Re: [RFC] kreplace: Rebootless kernel updates
From: Nikanth Karthikesan
Date: Mon Nov 24 2008 - 06:07:01 EST
On Friday 21 November 2008 20:09:52 Masami Hiramatsu wrote:
> Hi Nikanth,
>
> Nikanth Karthikesan wrote:
> Hmm,
> Would you like to replace a function to another function?
> If so, AFAIK, you can do that with kprobe and below pre_handler.
> (see booster enabled path in setup_singlestep())
>
> pre_handler(...)
> {
> reset_current_kprobe(); /* this kprobe doesn't need any more */
> regs->ip = new_function; /* change IP to new function */
> preempt_enable_no_resched(); /* recover preempt count */
> return 1; /* No need to setup singlestep */
> }
>
>
So, am I seeing worries to enable something, which is already possible, but
just not documented?
Thanks
Nikanth Karthikesan
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