From: Rusty Russell <rusty@rustcorp.com.au>
To: Oleg Nesterov <oleg@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [may-be-patch?] introduce MODULE_USE_UNEXPORTED()
Date: Thu, 21 Jul 2011 17:29:25 +0930 [thread overview]
Message-ID: <87zkk812ua.fsf@rustcorp.com.au> (raw)
In-Reply-To: <20110719184536.GA27224@redhat.com>
On Tue, 19 Jul 2011 20:45:36 +0200, Oleg Nesterov <oleg@redhat.com> wrote:
> Hi.
>
> >From time to time I need to write a module for debugging purposes,
> and it is a bit annoying I can't simply use, say, put_task_struct().
>
> Can't we do something like the simple patch below? Of course, it
> is very unsafe to use kallsyms_lookup_name() by many reasons. But
> it looks handy for the testing/debugging.
>
> Yes, I am not saying this feature is terribly useful, so I agree
> in advance with the "go away, we don't need this hack" nack.
>
> Still, what do you think?
>
> Oleg.
I hate it, but I've wanted it too...
Can we bury it under a CONFIG_DEBUG_KERNEL option? I don't want
distributions turning this on. And add a GPL license check.
Alternative is to have a "void *khacker_lookup_sym(const char *)" which
does this at runtime, but that's less convenient to use than this.
Thanks,
Rusty.
prev parent reply other threads:[~2011-07-21 9:33 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-19 18:45 [may-be-patch?] introduce MODULE_USE_UNEXPORTED() Oleg Nesterov
2011-07-21 7:59 ` Rusty Russell [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87zkk812ua.fsf@rustcorp.com.au \
--to=rusty@rustcorp.com.au \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=oleg@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.