linux-kernel - Re: [PATCH v1 00/11] Libdw/dwarf build clean up

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Message-ID: <522387f1-3fd3-4ff6-9bb7-eaa746be81af@arm.com>
Date: Tue, 24 Sep 2024 20:44:15 +0100
From: Leo Yan <leo.yan@....com>
To: Ian Rogers <irogers@...gle.com>, 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>,
 Jiri Olsa <jolsa@...nel.org>, Adrian Hunter <adrian.hunter@...el.com>,
 Kan Liang <kan.liang@...ux.intel.com>, John Garry <john.g.garry@...cle.com>,
 Will Deacon <will@...nel.org>, James Clark <james.clark@...aro.org>,
 Mike Leach <mike.leach@...aro.org>, Leo Yan <leo.yan@...ux.dev>,
 Guo Ren <guoren@...nel.org>, Paul Walmsley <paul.walmsley@...ive.com>,
 Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>,
 Nick Terrell <terrelln@...com>, Guilherme Amadio <amadio@...too.org>,
 Changbin Du <changbin.du@...wei.com>, "Steinar H. Gunderson"
 <sesse@...gle.com>, "Masami Hiramatsu (Google)" <mhiramat@...nel.org>,
 Aditya Gupta <adityag@...ux.ibm.com>,
 Athira Rajeev <atrajeev@...ux.vnet.ibm.com>,
 Masahiro Yamada <masahiroy@...nel.org>, Huacai Chen <chenhuacai@...nel.org>,
 Bibo Mao <maobibo@...ngson.cn>, Kajol Jain <kjain@...ux.ibm.com>,
 Anup Patel <anup@...infault.org>,
 Shenlin Liang <liangshenlin@...incomputing.com>,
 Atish Patra <atishp@...osinc.com>, Oliver Upton <oliver.upton@...ux.dev>,
 Chen Pei <cp0613@...ux.alibaba.com>, Dima Kogan <dima@...retsauce.net>,
 Alexander Lobakin <aleksander.lobakin@...el.com>,
 "David S. Miller" <davem@...emloft.net>,
 Przemek Kitszel <przemyslaw.kitszel@...el.com>,
 linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
 Yang Jihong <yangjihong@...edance.com>
Subject: Re: [PATCH v1 00/11] Libdw/dwarf build clean up

On 9/24/2024 5:04 PM, Ian Rogers wrote:

> The patches remove the conditional compilation assuming the
> features are in libdw where the feature test is expanded to check
> there pressence.
> 
> In the Makefile code dwarf tends to mean unwind or libdw support for
> dwarf things. To make it clearer when dwarf really just means libdw
> numerous build variables and defines are renamed.
> 
> There is some tech debt in the changes as perf check still reports the
> values using the old name and for features that are no longer tested.

I built for Arm64 target with static and dynamic linkage, both can build
successfully in Ubuntu 24.04 and Debian bookworm. FWIW:

Tested-by: Leo Yan <leo.yan@....com>