From: Namhyung Kim <namhyung@kernel.org>
To: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@kernel.org>,
Adrian Hunter <adrian.hunter@intel.com>,
Kan Liang <kan.liang@linux.intel.com>,
linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org,
Ian Rogers <irogers@google.com>
Subject: Re: [PATCH v2] perf build: Make libunwind opt-in rather than opt-out
Date: Tue, 05 Nov 2024 08:41:39 -0800 [thread overview]
Message-ID: <173082489932.149345.16688202672767622276.b4-ty@kernel.org> (raw)
In-Reply-To: <20241028193619.247727-1-irogers@google.com>
On Mon, 28 Oct 2024 12:36:19 -0700, Ian Rogers wrote:
> Having multiple unwinding libraries makes the perf code harder to
> understand and we have unused/untested code paths.
>
> Perf made BPF support an opt-out rather than opt-in feature. As libbpf
> has a libelf dependency, elfutils that provides libelf will also
> provide libdw. When libdw is present perf will use libdw unwinding
> rather than libunwind unwinding even if libunwind support is compiled
> in.
>
> [...]
Applied to perf-tools-next, thanks!
Best regards,
Namhyung
prev parent reply other threads:[~2024-11-05 16:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-28 19:36 Ian Rogers
2024-10-28 21:49 ` Arnaldo Carvalho de Melo
2024-11-05 16:41 ` Namhyung Kim [this message]
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