linux-kernel - Re: [PATCH] perf: arm64: Fix compilation error

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Message-Id: <173956819350.2296227.13350055330369051271.b4-ty@kernel.org>
Date: Fri, 14 Feb 2025 13:23:13 -0800
From: Namhyung Kim <namhyung@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>, 
 Ian Rogers <irogers@...gle.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>, Jiri Olsa <jolsa@...nel.org>, 
 Adrian Hunter <adrian.hunter@...el.com>, 
 "Liang, Kan" <kan.liang@...ux.intel.com>, 
 linux-arm-kernel@...ts.infradead.org, linux-perf-users@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Leo Yan <leo.yan@....com>
Subject: Re: [PATCH] perf: arm64: Fix compilation error

On Fri, 14 Feb 2025 11:10:25 +0000, Leo Yan wrote:
> Since the commit dc6d2bc2d893 ("perf sample: Make user_regs and
> intr_regs optional"), the building for Arm64 reports error:
> 
> arch/arm64/util/unwind-libdw.c: In function ‘libdw__arch_set_initial_registers’:
> arch/arm64/util/unwind-libdw.c:11:32: error: initialization of ‘struct regs_dump *’ from incompatible pointer type ‘struct regs_dump **’ [-Werror=incompatible-pointer-types]
>    11 |  struct regs_dump *user_regs = &ui->sample->user_regs;
>       |                                ^
> cc1: all warnings being treated as errors
> make[6]: *** [/home/niayan01/linux/tools/build/Makefile.build:85: arch/arm64/util/unwind-libdw.o] Error 1
> make[5]: *** [/home/niayan01/linux/tools/build/Makefile.build:138: util] Error 2
> arch/arm64/tests/dwarf-unwind.c: In function ‘test__arch_unwind_sample’:
> arch/arm64/tests/dwarf-unwind.c:48:27: error: initialization of ‘struct regs_dump *’ from incompatible pointer type ‘struct regs_dump **’ [-Werror=incompatible-pointer-types]
>    48 |  struct regs_dump *regs = &sample->user_regs;
>       |                           ^
> 
> [...]
Applied to perf-tools-next, thanks!

Best regards,
Namhyung