linux-kernel - Re: [PATCH 22/22] x86_64: use relative pointers with dynamic debug

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Message-ID: <76d66929-0c3d-4251-f315-f034405a71ff@rasmusvillemoes.dk>
Date:   Wed, 3 Oct 2018 23:40:39 +0200
From:   Rasmus Villemoes <linux@...musvillemoes.dk>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     Jason Baron <jbaron@...mai.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, x86@...nel.org,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 22/22] x86_64: use relative pointers with dynamic debug

On 2018-10-02 11:50, Ingo Molnar wrote:
> 
> * Rasmus Villemoes <linux@...musvillemoes.dk> wrote:
> 
>> Similar to how x86_64 uses bug_entry-relative pointers to reduce
>> sizeof(struct bug_entry), the same thing can now be done for struct
>> _ddebug, saving 16 bytes for each of those (i.e., each pr_debug, dev_dbg
>> etc. in a CONFIG_DYNAMIC_DEBUG kernel).
> 
> Reviewed-by: Ingo Molnar <mingo@...nel.org>

Thanks! Can I assume this also applies to the latecomer 23/22, which I
think I'm gonna squash with 22/22? Then I'll resend the series with
various tags included and ask Andrew to pick it up.

Rasmus