netdev - Re: [PATCH bpf-next 03/29] bpf: introduce BPF token object

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Message-ID: <CAHk-=wi_DdgW73uVCRHsNNm6-J0+JZOas92ybNsCoEfcWac3xw@mail.gmail.com>
Date: Fri, 5 Jan 2024 12:45:57 -0800
From: Linus Torvalds <torvalds@...uxfoundation.org>
To: Matthew Wilcox <willy@...radead.org>
Cc: Andrii Nakryiko <andrii@...nel.org>, bpf@...r.kernel.org, netdev@...r.kernel.org, 
	paul@...l-moore.com, brauner@...nel.org, linux-fsdevel@...r.kernel.org, 
	linux-security-module@...r.kernel.org, kernel-team@...a.com
Subject: Re: [PATCH bpf-next 03/29] bpf: introduce BPF token object

On Fri, 5 Jan 2024 at 12:32, Matthew Wilcox <willy@...radead.org> wrote:
>
> I can't tell from the description whether there are going to be a lot of
> these.  If there are, it might make sense to create a slab cache for
> them rather than get them from the general-purpose kmalloc caches.

I suspect it's a "count on the fingers of your hand" thing, and having
a slab cache would be more overhead than you'd ever win.

           Linus