linux-kernel - Re: [PATCH v2] perf docs: Mark the Android document as obsolete

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Message-ID: <CAP-5=fVd9pO7kKvZX7PZ6sJ+GHOV7aF=Ry98a=vknimuSTp9Lg@mail.gmail.com>
Date: Mon, 15 Jul 2024 10:17:29 -0700
From: Ian Rogers <irogers@...gle.com>
To: Leo Yan <leo.yan@....com>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, Jiri Olsa <jolsa@...nel.org>, 
	Adrian Hunter <adrian.hunter@...el.com>, "Liang, Kan" <kan.liang@...ux.intel.com>, 
	Nathan Chancellor <nathan@...nel.org>, Nick Desaulniers <ndesaulniers@...gle.com>, 
	Bill Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>, 
	James Clark <james.clark@...aro.org>, linux-perf-users@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] perf docs: Mark the Android document as obsolete

On Mon, Jul 15, 2024 at 7:34 AM Leo Yan <leo.yan@....com> wrote:
[snip]
> +Android NDK compilation is deprecated and no longer supported.

I think this is objectively worse than just removing the file. It is
likely the perf tool can build with clang/LLVM, I do it every day, and
the special case for Android is likely more about the libc (aka
bionic) which gradually over time has been becoming more full fat -
perhaps we need to carry somethings in tools/include for missing
definitions, but we build with musl and that's a PITA in this regard,
we've also been reducing the tools/include dependencies for perf trace
beauty support. We don't use ifuncs in the perf tool (Android's
linker/loader historically hasn't supported these) and the weak symbol
games should be okay and something I aspire to make less in the perf
tool over time. As Android uses Linux then it should work and should
be supported.

Thanks,
Ian