Re: [PATCH 07/10] uprobes/x86: Introduce arch_uretprobe_is_alive()

[Srikar Dronamraju]

* Oleg Nesterov <oleg@xxxxxxxxxx> [2015-05-04 14:49:14]:

> Add the x86-specific arch_uretprobe_is_alive() helper and define its
> "weak" version for other architectures.
> 
> It returns true if the stack frame mangled by prepare_uretprobe() is
> still on stack. So if it returns false, we know that the probed func
> has already returned.
> 
> TODO: this assumes that the probed app can't use multiple stacks (say
> sigaltstack). We will try to improve this logic later.
> 
> Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>

Looks good to me.

Acked-by: Srikar Dronamraju <srikar@xxxxxxxxxxxxxxxxxx>
> ---
-- 
Thanks and Regards
Srikar Dronamraju

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