linux-kernel - Re: [PATCH v3 1/5] perf tools: arm64: Use perf's copy of kernel headers

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Date:   Thu, 2 Jun 2022 11:08:07 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     German Gomez <german.gomez@....com>
Cc:     James Clark <james.clark@....com>, linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org, acme@...nel.org,
        broonie@...nel.org, leo.yan@...aro.org, mathieu.poirier@...aro.org,
        john.garry@...wei.com, Will Deacon <will@...nel.org>,
        Mike Leach <mike.leach@...aro.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 1/5] perf tools: arm64: Use perf's copy of kernel headers

On Wed, May 25, 2022 at 8:59 AM German Gomez <german.gomez@....com> wrote:
>
>
> On 25/05/2022 16:41, James Clark wrote:
> > Fix this include path to use perf's copy of the kernel header
> > rather than the one from the root of the repo.
> >
> > This fixes build errors when only applying the perf tools
> > part of a patchset rather than both sides.
> >
> > Reported-by: German Gomez <german.gomez@....com>
> > Signed-off-by: James Clark <james.clark@....com>
>
> Without this change "make -C tools/perf" was failing if kernel-side changes weren't applied
>
> Tested-by: German Gomez <german.gomez@....com>
>
> Thanks,
> German

Acked-by: Ian Rogers <irogers@...gle.com>

Thanks,
Ian

> > ---
> >  tools/perf/util/libunwind/arm64.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/tools/perf/util/libunwind/arm64.c b/tools/perf/util/libunwind/arm64.c
> > index 15f60fd09424..014d82159656 100644
> > --- a/tools/perf/util/libunwind/arm64.c
> > +++ b/tools/perf/util/libunwind/arm64.c
> > @@ -24,7 +24,7 @@
> >  #include "unwind.h"
> >  #include "libunwind-aarch64.h"
> >  #define perf_event_arm_regs perf_event_arm64_regs
> > -#include <../../../../arch/arm64/include/uapi/asm/perf_regs.h>
> > +#include <../../../arch/arm64/include/uapi/asm/perf_regs.h>
> >  #undef perf_event_arm_regs
> >  #include "../../arch/arm64/util/unwind-libunwind.c"
> >