linux-kernel - Re: [PATCH v1] perf arm: Fix include path

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Date:   Tue, 9 May 2023 10:58:46 +0800
From:   Leo Yan <leo.yan@...aro.org>
To:     Ian Rogers <irogers@...gle.com>
Cc:     Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach <mike.leach@...aro.org>,
        John Garry <john.g.garry@...cle.com>,
        Will Deacon <will@...nel.org>,
        James Clark <james.clark@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        coresight@...ts.linaro.org, linux-arm-kernel@...ts.infradead.org,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] perf arm: Fix include path

Hi Ian,

On Mon, May 08, 2023 at 02:31:28PM -0700, Ian Rogers wrote:
> Change "../cs-etm.h" to just "cs-etm.h" as ../cs-etm.h doesn't exist.
> 
> Signed-off-by: Ian Rogers <irogers@...gle.com>
> ---
>  tools/perf/arch/arm/util/pmu.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/perf/arch/arm/util/pmu.c b/tools/perf/arch/arm/util/pmu.c
> index 860a8b42b4b5..46154c226fbb 100644
> --- a/tools/perf/arch/arm/util/pmu.c
> +++ b/tools/perf/arch/arm/util/pmu.c
> @@ -12,7 +12,7 @@
>  #include "arm-spe.h"
>  #include "hisi-ptt.h"
>  #include "../../../util/pmu.h"
> -#include "../cs-etm.h"

This code is a bit tricky.  Here it deliberately uses "../cs-etm.h" to
avoid including the header file in the same folder, alternatively, the
compiler option "-I/home/leoy/Work/linux/tools/perf/util/include" will
lead the C file to include "tools/perf/util/include/../cs-etm.h".

> +#include "cs-etm.h"

So with this change, perf will fail to build actually :)

We need to change to:

  #include "../../../util/cs-etm.h"

With above change:

Reviewed-by: Leo Yan <leo.yan@...aro.org>

Thanks for code improvement!

>  struct perf_event_attr
>  *perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused)
> -- 
> 2.40.1.521.gf1e218fcd8-goog
>