From: Arnaldo Carvalho de Melo <acme@kernel•org>
To: Ian Rogers <irogers@google•com>
Cc: 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,
namhyung@kernel•org, palmer@dabbelt•com, peterz@infradead•org,
pjw@kernel•org, shimin.guo@skydio•com, tglozar@redhat•com,
tmricht@linux•ibm.com, will@kernel•org, yuzhuo@google•com
Subject: Re: [PATCH v3 0/8] perf libunwind multiple remote support
Date: Sun, 12 Apr 2026 16:18:02 -0300 [thread overview]
Message-ID: <advv6twWCEVBo_Hc@x1> (raw)
In-Reply-To: <CAP-5=fUz60Guq_gVV6wb_FfwhPs-fUN+PAbB3rQn3pycXbF3DA@mail.gmail.com>
On Fri, Apr 10, 2026 at 06:04:57PM -0700, Ian Rogers wrote:
> On Fri, Apr 3, 2026 at 10:40 PM Ian Rogers <irogers@google•com> wrote:
> >
> > Fix the libunwind build for when libdw and libunwind are feature
> > detected, currently failing with a duplicate symbol.
> >
> > Refactor the libunwind support so that whenever a remote target is
> > available, perf functions using the ELF machine can use that remote
> > target regardless of what the host/local machine is. Migrate existing
> > libunwind supported architectures like powerpc, arm64 and loongarch so
> > that they can work in a cross-architecture way. Add support for
> > RISC-V. Make the code more regular in function names, etc. and avoid
> > including a C-file. This increases the lines of code. It is similar in
> > style to the unwind-libdw implementation. It is hoped that the more
> > uniform nature of the code with help with refactoring the perf
> > registers for SIMD/APX support.
> >
> > Aside from local host testing these patches are under tested, in part
> > as I'm failing to see how to build libunwind with support for multiple
> > remote targets. Please could I get help in testing.
> >
> > v3: Minor whitespace clean up and warn when a dynamic choice of libdw
> > or libunwind is selected for unwinding and support is missing (Arnaldo).
>
> Hi Arnaldo,
>
> anything else outstanding from this series?
It is not applying, I did an attempt to refresh it but stomped at 7/8
⬢ [acme@toolbx perf-tools-next]$ patch -p1 < ./v3_20260403_irogers_perf_libunwind_multiple_remote_support.mbx
patching file tools/perf/util/Build
patching file tools/perf/util/libunwind-arch/libunwind-arch.c
patching file tools/perf/util/libunwind-arch/libunwind-arch.h
patching file tools/perf/util/libunwind-arch/libunwind-arm.c
patching file tools/perf/util/libunwind-arch/libunwind-arm64.c
patching file tools/perf/util/libunwind-arch/libunwind-i386.c
patching file tools/perf/util/libunwind-arch/libunwind-loongarch.c
patching file tools/perf/util/libunwind-arch/libunwind-mips.c
patching file tools/perf/util/libunwind-arch/libunwind-ppc32.c
patching file tools/perf/util/libunwind-arch/libunwind-ppc64.c
patching file tools/perf/util/libunwind-arch/libunwind-s390.c
patching file tools/perf/util/libunwind-arch/libunwind-x86_64.c
patching file tools/perf/util/libunwind/arm64.c
patching file tools/perf/util/libunwind/x86_32.c
patching file tools/perf/util/maps.c
patching file tools/perf/util/maps.h
patching file tools/perf/util/unwind-libunwind-local.c
Reversed (or previously applied) patch detected! Assume -R? [n] ^C
⬢ [acme@toolbx perf-tools-next]$
Can you please take a look and maybe resubmit it so that Sashiko can
have a look at it?
Two other patches had to be refreshed before 7/8.
- Arnaldo
next prev parent reply other threads:[~2026-04-12 19:18 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
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 [this message]
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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