Re: Revisiting DTrace syscall provider

[Ryota Ozaki <ozaki-r%netbsd.org@localhost>]

On Wed, Feb 25, 2015 at 2:38 PM, Paul Goyette <paul%vps1.whooppee.com@localhost> wrote:
> On Wed, 25 Feb 2015, Paul Goyette wrote:
>
>> modules that provide sys-calls.  Without the module loaded, the syscall
>> entry point is known no-op; when the module tries to unload, all of its
>> syscalls are checked, and if any of them points to somewhere NOT THE NOOP,
>> unload is prevented.
>
>
> Actually, the code checks to see if any those syscalls are currently active
> for any processes.
>
> IIRC, the relevant code is in routine syscall_disestablish() in file
> src/sys/kern_syscalls.c

Thank you for your suggestions! I'll check them.

BTW, how about using moudle_hold(9) for the refcount?
Shouldn't we use it for the purpose?

  ozaki-r

>
>
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