From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [PATCH net-next 1/4] indirect call wrappers: helpers to speed-up
 indirect calls of builtin
Date: Mon, 3 Dec 2018 10:04:50 -0800
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References: <cover.1543836966.git.pabeni@redhat.com>
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Cc: "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <eric.dumazet@gmail.com>
To: Paolo Abeni <pabeni@redhat.com>, netdev@vger.kernel.org
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On 12/03/2018 03:40 AM, Paolo Abeni wrote:
> This header define a bunch of helpers that allow avoiding the
> retpoline overhead when calling builtin functions via function pointers.
> It boils down to explicitly comparing the function pointers to
> known builtin functions and eventually invoke directly the latter.
> 
> The macros defined here implement the boilerplate for the above schema
> and will be used by the next patches.
> 
> rfc -> v1:
>  - use branch prediction hint, as suggested by Eric
> 
> Suggested-by: Eric Dumazet <Eric Dumazet edumazet@google.com>
> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
> ---
>  include/linux/indirect_call_wrapper.h | 77 +++++++++++++++++++++++++++
>  1 file changed, 77 insertions(+)
>  create mode 100644 include/linux/indirect_call_wrapper.h


This needs to be discussed more broadly, please include lkml 

Also please include Paul Turner <pjt@google.com>  in the discussion, since he was
the inventor of this idea.