From: greg@kroah.com (Greg KH)
To: kernelnewbies@lists.kernelnewbies.org
Subject: Reboot not calling module_exit of LKM
Date: Fri, 5 Aug 2011 12:06:30 -0700 [thread overview]
Message-ID: <20110805190630.GA15499@kroah.com> (raw)
In-Reply-To: <CAFNhLUVJO3JmsorNiab-A8OEtT503KUEb4-DX3FSEdO6d1tkTQ@mail.gmail.com>
On Fri, Aug 05, 2011 at 11:39:16AM -0700, Ramesh.P wrote:
> Hi,
>
> Good day!
>
> When a system is rebooted, the loadable kernel modules 'module_exit'
> functions are not called. I see this behavior in a custom kernel. My
> questions are
>
> a. Is this applicable in mainline/normal kernel too?
Yes.
> b. If yes, what are the reasons? (One reason may be, not to get into
> new problems while cleaning up the module)
You don't need to unload a module as the machine is about to be turned
off.
> c. Is there anyway for the kernel module to know the system is getting
> rebooted? (Apart from letting userspace to indicate the kernel
> module).
Yes, hook to the reboot notifier.
next prev parent reply other threads:[~2011-08-05 19:06 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-05 18:39 Reboot not calling module_exit of LKM Ramesh.P
2011-08-05 19:06 ` Greg KH [this message]
2011-08-05 22:59 ` Ramesh.P
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