linux-kernel - Re: [PATCH v3 15/15] livepatch: allow removal of a disabled patch

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Message-ID: <alpine.LSU.2.20.1701041554270.6852@pobox.suse.cz>
Date:   Wed, 4 Jan 2017 15:57:09 +0100 (CET)
From:   Miroslav Benes <mbenes@...e.cz>
To:     Josh Poimboeuf <jpoimboe@...hat.com>
cc:     Jessica Yu <jeyu@...hat.com>, Jiri Kosina <jikos@...nel.org>,
        Petr Mladek <pmladek@...e.com>, linux-kernel@...r.kernel.org,
        live-patching@...r.kernel.org,
        Michael Ellerman <mpe@...erman.id.au>,
        Heiko Carstens <heiko.carstens@...ibm.com>, x86@...nel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
        Vojtech Pavlik <vojtech@...e.com>, Jiri Slaby <jslaby@...e.cz>,
        Chris J Arges <chris.j.arges@...onical.com>,
        Andy Lutomirski <luto@...nel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH v3 15/15] livepatch: allow removal of a disabled patch


> diff --git a/samples/livepatch/livepatch-sample.c b/samples/livepatch/livepatch-sample.c
> index bb61c65..0625f38 100644
> --- a/samples/livepatch/livepatch-sample.c
> +++ b/samples/livepatch/livepatch-sample.c
> @@ -89,7 +89,6 @@ static int livepatch_init(void)
>  
>  static void livepatch_exit(void)
>  {
> -	WARN_ON(klp_disable_patch(&patch));
>  	WARN_ON(klp_unregister_patch(&patch));
>  }

Btw, we remove the only call to klp_disable_patch() here. Maybe we can 
remove the function completely. It is not needed anywhere.

Miroslav