linux-kernel - Re: [PATCH 0/2] revert unconditional slab and page allocator fault injection calls

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Message-Id: <20240711123637.508e81d2b25ac8e0c9b726c0@linux-foundation.org>
Date: Thu, 11 Jul 2024 12:36:37 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: Vlastimil Babka <vbabka@...e.cz>
Cc: Mateusz Guzik <mjguzik@...il.com>, Akinobu Mita
 <akinobu.mita@...il.com>, Alexei Starovoitov <ast@...nel.org>, Daniel
 Borkmann <daniel@...earbox.net>, John Fastabend <john.fastabend@...il.com>,
 Andrii Nakryiko <andrii@...nel.org>, Martin KaFai Lau
 <martin.lau@...ux.dev>, Eduard Zingerman <eddyz87@...il.com>, Song Liu
 <song@...nel.org>, Yonghong Song <yonghong.song@...ux.dev>, KP Singh
 <kpsingh@...nel.org>, Stanislav Fomichev <sdf@...ichev.me>, Hao Luo
 <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>, Christoph Lameter
 <cl@...ux.com>, David Rientjes <rientjes@...gle.com>, Roman Gushchin
 <roman.gushchin@...ux.dev>, Hyeonggon Yoo <42.hyeyoo@...il.com>,
 linux-kernel@...r.kernel.org, bpf@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH 0/2] revert unconditional slab and page allocator fault
 injection calls

On Thu, 11 Jul 2024 18:35:29 +0200 Vlastimil Babka <vbabka@...e.cz> wrote:

> These two patches largely revert commits that added function call
> overhead into slab and page allocation hotpaths and that cannot be
> currently disabled even though related CONFIG_ options do exist.

Five years ago.  I assume the overall overhead is small?