linux-hardening - Re: [PATCH v1 13/13] tools headers: Rename noinline to _

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Date: Sun, 10 Mar 2024 12:24:58 +0100
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Ian Rogers <irogers@...gle.com>
Cc: Arnd Bergmann <arnd@...db.de>, Andrii Nakryiko <andrii@...nel.org>, 
	Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, 
	Martin KaFai Lau <martin.lau@...ux.dev>, Song Liu <song@...nel.org>, 
	Yonghong Song <yonghong.song@...ux.dev>, John Fastabend <john.fastabend@...il.com>, 
	KP Singh <kpsingh@...nel.org>, Stanislav Fomichev <sdf@...gle.com>, Hao Luo <haoluo@...gle.com>, 
	Jiri Olsa <jolsa@...nel.org>, Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, 
	Adrian Hunter <adrian.hunter@...el.com>, Paolo Bonzini <pbonzini@...hat.com>, 
	Shuah Khan <shuah@...nel.org>, Kees Cook <keescook@...omium.org>, 
	"Gustavo A. R. Silva" <gustavoars@...nel.org>, Nathan Chancellor <nathan@...nel.org>, 
	Nick Desaulniers <ndesaulniers@...gle.com>, Bill Wendling <morbo@...gle.com>, 
	Justin Stitt <justinstitt@...gle.com>, Andrew Morton <akpm@...ux-foundation.org>, 
	Liam Howlett <liam.howlett@...cle.com>, Miguel Ojeda <ojeda@...nel.org>, 
	Will Deacon <will@...nel.org>, Mark Brown <broonie@...nel.org>, 
	David Laight <David.Laight@...lab.com>, "Michael S. Tsirkin" <mst@...hat.com>, Shunsuke Mie <mie@...l.co.jp>, 
	Yafang Shao <laoar.shao@...il.com>, Kui-Feng Lee <kuifeng@...a.com>, 
	James Clark <james.clark@....com>, Nick Forrington <nick.forrington@....com>, 
	Leo Yan <leo.yan@...ux.dev>, German Gomez <german.gomez@....com>, Rob Herring <robh@...nel.org>, 
	John Garry <john.g.garry@...cle.com>, Sean Christopherson <seanjc@...gle.com>, 
	Anup Patel <anup@...infault.org>, Fuad Tabba <tabba@...gle.com>, 
	Andrew Jones <ajones@...tanamicro.com>, Chao Peng <chao.p.peng@...ux.intel.com>, 
	Haibo Xu <haibo1.xu@...el.com>, Peter Xu <peterx@...hat.com>, 
	Vishal Annapurve <vannapurve@...gle.com>, linux-kernel@...r.kernel.org, 
	linux-arch@...r.kernel.org, bpf@...r.kernel.org, 
	linux-perf-users@...r.kernel.org, kvm@...r.kernel.org, 
	linux-kselftest@...r.kernel.org, linux-hardening@...r.kernel.org, 
	llvm@...ts.linux.dev, Christopher Di Bella <cjdb@...gle.com>
Subject: Re: [PATCH v1 13/13] tools headers: Rename noinline to __noinline

On Sun, Mar 10, 2024 at 3:06 AM Ian Rogers <irogers@...gle.com> wrote:
>
> [1] https://clang.llvm.org/docs/AttributeReference.html#noinline
> Reported-by: Christopher Di Bella <cjdb@...gle.com>

Out of curiosity, was this due to the `[[gnu::noinline]]` or similar
in e.g. `src/string/memset_explicit.h`?

> -#define   noinline                      __attribute__((__noinline__))
> +#define   __noinline                      __attribute__((__noinline__))

I guess it does not matter since I don't see it used in `tools/`, but
should the one inside `__fix_address` be updated too? Or is the idea
to keep the diff as minimal as possible?

Cheers,
Miguel