Subject: Re: [PATCH net-next v2 2/5] once: make helper generic for calling functions once

From: Alexei Starovoitov <[email-masked]>
Date: Wed, 7 Oct 2015 16:52:56 -0700

On 10/7/15 4:20 PM, Daniel Borkmann wrote:
> From: Hannes Frederic Sowa<[email-masked]>
>
> Make the get_random_once() helper generic enough, so that functions
> in general would only be called once, where one user of this is then
> net_get_random_once().
>
> The only implementation specific call is to get_random_bytes(), all
> the rest of this *_once() facility would be duplicated among different
> subsystems otherwise. The new DO_ONCE() helper will be used by prandom()
> later on, but might also be useful for other scenarios/subsystems as
> well where a one-time initialization in often-called, possibly fast
> path code could occur.
>
> Signed-off-by: Hannes Frederic Sowa<[email-masked]>
> Signed-off-by: Daniel Borkmann<[email-masked]>

nice! you even added sparse tags.
Acked-by: Alexei Starovoitov <[email-masked]>