linux-kernel - Re: [PATCH v3 00/17] Add static

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Message-ID: <20200320223141.GC2452@worktop.programming.kicks-ass.net>
Date:   Fri, 20 Mar 2020 23:31:41 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     x86@...nel.org
Cc:     linux-kernel@...r.kernel.org, rostedt@...dmis.org,
        mhiramat@...nel.org, bristot@...hat.com, jbaron@...mai.com,
        torvalds@...ux-foundation.org, tglx@...utronix.de,
        mingo@...nel.org, namit@...are.com, hpa@...or.com, luto@...nel.org,
        ard.biesheuvel@...aro.org, jpoimboe@...hat.com
Subject: Re: [PATCH v3 00/17] Add static_call()

On Fri, Mar 20, 2020 at 10:38:44PM +0100, Peter Zijlstra wrote:
> static_call(), is the idea of static_branch() applied to indirect function
> calls. Remove a data load (indirection) by modifying the text.
> 
> The inline implementation still relies on objtool to generate the
> .static_call_sites section, mostly because this is a natural place for x86_64
> and works for both GCC and LLVM.  Other architectures can pick other means
> if/when they implement the inline patching. The out-of-line (aka. trampoline)
> variant doesn't require this.
> 
> Patches can also be found here:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git x86/static_call
> 
> 
> Comments?

*groan*, I got the lkml address wrong (again!), this series is cursed.