netdev - Re: [PATCH v8 2/4] tools feature: add support for detecting libpfm4

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Message-ID: <20200414152116.GD208694@krava>
Date:   Tue, 14 Apr 2020 17:21:16 +0200
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 v8 2/4] tools feature: add support for detecting libpfm4

On Sat, Apr 11, 2020 at 12:46:29AM -0700, Ian Rogers wrote:
> From: Stephane Eranian <eranian@...gle.com>
> 
> libpfm4 provides an alternate command line encoding of perf events.
> 
> Signed-off-by: Stephane Eranian <eranian@...gle.com>
> Reviewed-by: Ian Rogers <irogers@...gle.com>
> ---
>  tools/build/Makefile.feature       | 6 ++++--
>  tools/build/feature/Makefile       | 6 +++++-
>  tools/build/feature/test-libpfm4.c | 9 +++++++++
>  3 files changed, 18 insertions(+), 3 deletions(-)
>  create mode 100644 tools/build/feature/test-libpfm4.c
> 
> diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature
> index 3e0c019ef297..0b651171476f 100644
> --- a/tools/build/Makefile.feature
> +++ b/tools/build/Makefile.feature
> @@ -73,7 +73,8 @@ FEATURE_TESTS_BASIC :=                  \
>          libaio				\
>          libzstd				\
>          disassembler-four-args		\
> -        file-handle
> +        file-handle			\
> +        libpfm4

let's treat this the same way as libbpf and do not include
it in the basic check, which will fail for omst users

jirka