linux-kernel - Re: [PATCH v5] perf tools: add support for libpfm4

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Message-ID: <20200324102620.GO1534489@krava>
Date:   Tue, 24 Mar 2020 11:26:20 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Ian Rogers <irogers@...gle.com>
Cc:     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>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Martin KaFai Lau <kafai@...com>, Yonghong Song <yhs@...com>,
        Andrii Nakryiko <andriin@...com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Igor Lubashev <ilubashe@...mai.com>,
        Alexey Budankov <alexey.budankov@...ux.intel.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Jiwei Sun <jiwei.sun@...driver.com>,
        yuzhoujian <yuzhoujian@...ichuxing.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Jin Yao <yao.jin@...ux.intel.com>,
        Leo Yan <leo.yan@...aro.org>,
        John Garry <john.garry@...wei.com>,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        bpf@...r.kernel.org, linux-perf-users@...r.kernel.org,
        Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH v5] perf tools: add support for libpfm4

On Mon, Mar 23, 2020 at 04:58:46PM -0700, Ian Rogers wrote:

SNIP

>  INTERACTIVE PROMPTING KEYS
>  --------------------------
> diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
> index 80e55e796be9..571aa6b1af40 100644
> --- a/tools/perf/Makefile.config
> +++ b/tools/perf/Makefile.config
> @@ -999,6 +999,18 @@ ifdef LIBCLANGLLVM
>    endif
>  endif
>  
> +ifndef NO_LIBPFM4
> +  ifeq ($(feature-libpfm4), 1)
> +    CFLAGS += -DHAVE_LIBPFM
> +    EXTLIBS += -lpfm
> +    ASCIIDOC_EXTRA = -aHAVE_LIBPFM=1
> +    $(call detected,CONFIG_LIBPFM4)

you don't use CONFIG_LIBPFM4

but I was wondering if we should put it all in separate
object like util/pfm.c to get rid of some of those ifdefs

jirka