From: Arnaldo Carvalho de Melo <acme@kernel•org>
To: Ian Rogers <irogers@google•com>
Cc: Namhyung Kim <namhyung@kernel•org>,
9erthalion6@gmail•com, adrian.hunter@intel•com, alex@ghiti•fr,
alexander.shishkin@linux•intel.com,
andrew.jones@oss•qualcomm.com, aou@eecs•berkeley.edu,
atrajeev@linux•ibm.com, blakejones@google•com, ctshao@google•com,
dapeng1.mi@linux•intel.com, howardchu95@gmail•com,
james.clark@linaro•org, john.g.garry@oracle•com,
jolsa@kernel•org, leo.yan@linux•dev, libunwind-devel@nongnu•org,
linux-arm-kernel@lists•infradead.org,
linux-kernel@vger•kernel.org, linux-perf-users@vger•kernel.org,
linux-riscv@lists•infradead.org, mingo@redhat•com,
palmer@dabbelt•com, peterz@infradead•org, pjw@kernel•org,
shimin.guo@skydio•com, tglozar@redhat•com, tmricht@linux•ibm.com,
will@kernel•org, amadio@gentoo•org, yuzhuo@google•com
Subject: Re: [PATCH v1 0/2] perf build: Remove libunwind support
Date: Mon, 30 Mar 2026 15:49:09 -0300 [thread overview]
Message-ID: <acrFpcLxvHNOcQ8N@x1> (raw)
In-Reply-To: <acbxyzN4XKczgpLg@x1>
On Fri, Mar 27, 2026 at 06:08:27PM -0300, Arnaldo Carvalho de Melo wrote:
> On Fri, Mar 27, 2026 at 01:37:20PM -0700, Ian Rogers wrote:
> > On Fri, Mar 27, 2026 at 1:07 PM Arnaldo Carvalho de Melo <acme@kernel•org> wrote:
> > > This is an area that is tricky and since we _already_ have two
> > > implementations, the good thing for regression testing would be the
> > > compare their results until libunwind becomes completely rotten and
> > > unusable?
> >
> > My series:
> > https://lore.kernel.org/lkml/20260305221927.3237145-1-irogers@google.com/
> > makes libdw and libunwind supported together:
> > https://lore.kernel.org/lkml/20260305221927.3237145-2-irogers@google.com/
> > """
> > This commit refactors the DWARF unwind post-processing to be
> > configurable at runtime via the .perfconfig file option
> > 'unwind.style', or using the argument '--unwind-style' in the commands
> > 'perf report', 'perf script' and 'perf inject', in a similar manner to
> > the addr2line or the disassembler style.
> > """
> > That series cleans up several other issues, which is why I think it is
> > worth landing while we wait for libdw to become stable.
>
> Cool, I'll try and review/test it this weekend.
>
> Thanks for pointint it out!
Pointing, looking at it now, one comment so far, remove that new blank
line, testing...
⬢ [acme@toolbx perf-tools-next]$ git am ./v2_20260305_irogers_perf_libunwind_multiple_remote_support.mbx
Applying: perf unwind: Refactor get_entries to allow dynamic libdw/libunwind selection
.git/rebase-apply/patch:128: new blank line at EOF.
+
warning: 1 line adds whitespace errors.
Applying: perf build loongarch: Remove reference to missing file
Applying: tools build: Deduplicate test-libunwind for different architectures
Applying: perf build: Be more programmatic when setting up libunwind variables
Applying: perf unwind-libunwind: Make libunwind register reading cross platform
Applying: perf unwind-libunwind: Move flush/finish access out of local
Applying: perf unwind-libunwind: Remove libunwind-local
Applying: perf unwind-libunwind: Add RISC-V libunwind support
⬢ [acme@toolbx perf-tools-next]$
next prev parent reply other threads:[~2026-03-30 18:49 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-24 14:29 [RFC PATCH v1 0/7] perf libunwind multiple remote support Ian Rogers
2026-02-24 14:29 ` [RFC PATCH v1 1/7] tools build: Deduplicate test-libunwind for different architectures Ian Rogers
2026-02-24 14:29 ` [RFC PATCH v1 2/7] perf build: Be more programmatic when setting up libunwind variables Ian Rogers
2026-02-24 14:29 ` [RFC PATCH v1 3/7] perf build loongarch: Remove reference to missing file Ian Rogers
2026-02-24 14:29 ` [RFC PATCH v1 4/7] perf unwind-libunwind: Make libunwind register reading cross platform Ian Rogers
2026-02-24 14:29 ` [RFC PATCH v1 5/7] perf unwind-libunwind: Move flush/finish access out of local Ian Rogers
2026-02-24 14:29 ` [RFC PATCH v1 7/7] perf unwind-libunwind: Add RISC-V libunwind support Ian Rogers
2026-02-25 21:08 ` Andrew Jones
2026-02-26 1:34 ` Ian Rogers
2026-03-05 22:19 ` [PATCH v2 0/8] perf libunwind multiple remote support Ian Rogers
2026-03-05 22:19 ` [PATCH v2 1/8] perf unwind: Refactor get_entries to allow dynamic libdw/libunwind selection Ian Rogers
2026-03-31 20:38 ` Arnaldo Carvalho de Melo
2026-03-31 20:42 ` Arnaldo Carvalho de Melo
2026-03-31 21:21 ` Ian Rogers
2026-03-05 22:19 ` [PATCH v2 2/8] perf build loongarch: Remove reference to missing file Ian Rogers
2026-03-30 21:05 ` Arnaldo Carvalho de Melo
2026-03-31 17:01 ` Ian Rogers
2026-03-05 22:19 ` [PATCH v2 3/8] tools build: Deduplicate test-libunwind for different architectures Ian Rogers
2026-03-30 21:08 ` Arnaldo Carvalho de Melo
2026-03-05 22:19 ` [PATCH v2 4/8] perf build: Be more programmatic when setting up libunwind variables Ian Rogers
2026-03-05 22:19 ` [PATCH v2 5/8] perf unwind-libunwind: Make libunwind register reading cross platform Ian Rogers
2026-03-05 22:19 ` [PATCH v2 6/8] perf unwind-libunwind: Move flush/finish access out of local Ian Rogers
2026-03-05 22:19 ` [PATCH v2 8/8] perf unwind-libunwind: Add RISC-V libunwind support Ian Rogers
2026-03-19 21:39 ` [PATCH v2 0/8] perf libunwind multiple remote support Namhyung Kim
2026-03-21 3:06 ` Ian Rogers
2026-03-21 8:20 ` Guilherme Amadio
2026-03-21 23:42 ` [PATCH v1 0/2] perf build: Remove libunwind support Ian Rogers
2026-03-21 23:42 ` [PATCH v1 1/2] " Ian Rogers
2026-03-21 23:42 ` [PATCH v1 2/2] tools build: Remove libunwind feature tests Ian Rogers
2026-03-26 22:51 ` [PATCH v1 0/2] perf build: Remove libunwind support Namhyung Kim
2026-03-26 23:14 ` Ian Rogers
2026-03-27 20:07 ` Arnaldo Carvalho de Melo
2026-03-27 20:37 ` Ian Rogers
2026-03-27 20:41 ` Ian Rogers
2026-03-27 21:08 ` Arnaldo Carvalho de Melo
2026-03-30 18:49 ` Arnaldo Carvalho de Melo [this message]
2026-04-04 5:40 ` [PATCH v3 0/8] perf libunwind multiple remote support Ian Rogers
2026-04-04 5:40 ` [PATCH v3 1/8] perf unwind: Refactor get_entries to allow dynamic libdw/libunwind selection Ian Rogers
2026-04-04 5:40 ` [PATCH v3 2/8] perf build loongarch: Remove reference to missing file Ian Rogers
2026-04-04 5:40 ` [PATCH v3 3/8] tools build: Deduplicate test-libunwind for different architectures Ian Rogers
2026-04-04 5:40 ` [PATCH v3 4/8] perf build: Be more programmatic when setting up libunwind variables Ian Rogers
2026-04-04 5:40 ` [PATCH v3 5/8] perf unwind-libunwind: Make libunwind register reading cross platform Ian Rogers
2026-04-04 5:40 ` [PATCH v3 6/8] perf unwind-libunwind: Move flush/finish access out of local Ian Rogers
2026-04-04 5:40 ` [PATCH v3 8/8] perf unwind-libunwind: Add RISC-V libunwind support Ian Rogers
2026-04-11 1:04 ` [PATCH v3 0/8] perf libunwind multiple remote support Ian Rogers
2026-04-12 19:18 ` Arnaldo Carvalho de Melo
2026-04-13 2:47 ` [PATCH v4 " Ian Rogers
2026-04-13 2:47 ` [PATCH v4 1/8] perf unwind: Refactor get_entries to allow dynamic libdw/libunwind selection Ian Rogers
2026-04-30 3:25 ` patchwork-bot+linux-riscv
2026-04-13 2:47 ` [PATCH v4 2/8] perf build loongarch: Remove reference to missing file Ian Rogers
2026-04-13 2:48 ` [PATCH v4 3/8] tools build: Deduplicate test-libunwind for different architectures Ian Rogers
2026-04-13 2:48 ` [PATCH v4 4/8] perf build: Be more programmatic when setting up libunwind variables Ian Rogers
2026-04-13 2:48 ` [PATCH v4 5/8] perf unwind-libunwind: Make libunwind register reading cross platform Ian Rogers
2026-04-13 2:48 ` [PATCH v4 6/8] perf unwind-libunwind: Move flush/finish access out of local Ian Rogers
2026-04-13 2:48 ` [PATCH v4 8/8] perf unwind-libunwind: Add RISC-V libunwind support Ian Rogers
2026-04-13 21:01 ` [PATCH v4 0/8] perf libunwind multiple remote support Ian Rogers
2026-05-13 23:31 ` [PATCH v5 0/7] " Ian Rogers
2026-05-13 23:31 ` [PATCH v5 1/7] perf unwind: Refactor get_entries to allow dynamic libdw/libunwind selection Ian Rogers
2026-05-15 0:12 ` Arnaldo Carvalho de Melo
2026-05-15 11:27 ` Arnaldo Carvalho de Melo
2026-05-15 16:30 ` Ian Rogers
2026-05-13 23:31 ` [PATCH v5 2/7] tools build: Deduplicate test-libunwind for different architectures Ian Rogers
2026-05-13 23:31 ` [PATCH v5 3/7] perf build: Be more programmatic when setting up libunwind variables Ian Rogers
2026-05-13 23:31 ` [PATCH v5 4/7] perf unwind-libunwind: Make libunwind register reading cross platform Ian Rogers
2026-05-15 19:23 ` Arnaldo Carvalho de Melo
2026-05-15 19:38 ` Ian Rogers
2026-05-15 20:48 ` Arnaldo Carvalho de Melo
2026-05-17 17:23 ` Ian Rogers
2026-05-13 23:31 ` [PATCH v5 5/7] perf unwind-libunwind: Move flush/finish access out of local Ian Rogers
2026-05-13 23:31 ` [PATCH v5 7/7] perf unwind-libunwind: Add RISC-V libunwind support Ian Rogers
2026-05-14 16:51 ` [PATCH v5 0/7] perf libunwind multiple remote support Ian Rogers
2026-05-15 0:01 ` Arnaldo Carvalho de Melo
2026-05-15 0:28 ` Arnaldo Carvalho de Melo
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