Re: [PATCH] perf unwind-libdw: Fix stale object reference in arch/loongarch

[Icenowy Zheng]

在 2026-04-19日的 08:01 -0700，Ian Rogers写道：
> On Sun, Apr 19, 2026 at 2:08 AM Icenowy Zheng
> <zhengxingda@xxxxxxxxxxx> wrote:
> > 
> > The arch/loongarch/util/unwind-libdw.c file is already moved to
> > util/,
> > but the Build statement for it is forgot to be removed.
> > 
> > Remove the stale Build statement.
> > 
> > This fixes the build failure of perf tool in kernel v7.0 on
> > LoongArch.
> > 
> > Fixes: e62fae9d9e85 ("perf unwind-libdw: Fix a cross-arch unwinding
> > bug")
> > Signed-off-by: Icenowy Zheng <zhengxingda@xxxxxxxxxxx>
> > Cc: stable@xxxxxxxxxxxxxxx
> 
> I think this is already fixed:
> https://web.git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools-next.git/commit/?h=perf-tools-next

Thanks for pointing out!

Thanks,
Icenowy

> I also sent out a fix, fwiw:
> https://lore.kernel.org/linux-perf-users/20260305221927.3237145-3-irogers@xxxxxxxxxx/
> 
> Thanks,
> Ian
> 
> > ---
> >  tools/perf/arch/loongarch/util/Build | 1 -
> >  1 file changed, 1 deletion(-)
> > 
> > diff --git a/tools/perf/arch/loongarch/util/Build
> > b/tools/perf/arch/loongarch/util/Build
> > index 3ad73d0289f3e..8d91e78d31c94 100644
> > --- a/tools/perf/arch/loongarch/util/Build
> > +++ b/tools/perf/arch/loongarch/util/Build
> > @@ -1,4 +1,3 @@
> >  perf-util-y += header.o
> > 
> >  perf-util-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind.o
> > -perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o
> > --
> > 2.52.0
> >