linux-kernel - Re: [PATCH] perf build: Display EXTRA features for VF=1 build

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Date:   Fri, 19 Jan 2018 11:15:24 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Jiri Olsa <jolsa@...nel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        David Ahern <dsahern@...il.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Subject: Re: [PATCH] perf build: Display EXTRA features for VF=1 build

On Tue, Jan 09, 2018 at 10:26:46AM +0100, Jiri Olsa wrote:
> On Mon, Jan 08, 2018 at 06:16:49PM +0100, Jiri Olsa wrote:
> > On Mon, Jan 08, 2018 at 06:11:22PM +0100, Jiri Olsa wrote:
> > > On Mon, Jan 08, 2018 at 12:24:33PM -0300, Arnaldo Carvalho de Melo wrote:
> > > 
> > > SNIP
> > > 
> > > > 
> > > > Works:
> > > > 
> > > > [acme@...et perf]$ ldd ~/bin/perf | grep babel
> > > > 	libbabeltrace-ctf.so.1 => /lib64/libbabeltrace-ctf.so.1 (0x00007fcb688d0000)
> > > > 	libbabeltrace.so.1 => /lib64/libbabeltrace.so.1 (0x00007fcb67e92000)
> > > > [acme@...et perf]$ rpm -q libbabeltrace-devel
> > > > libbabeltrace-devel-1.5.3-1.fc27.x86_64
> > > > [acme@...et perf]$
> > > > 
> > > > But then, if we show:
> > > > 
> > > > Auto-detecting system features:
> > > > ...                         dwarf: [ on  ]
> > > > ...            dwarf_getlocations: [ on  ]
> > > > ...                         glibc: [ on  ]
> > > > ...                          gtk2: [ on  ]
> > > > ...                      libaudit: [ on  ]
> > > > ...                        libbfd: [ on  ]
> > > > ...                        libelf: [ on  ]
> > > > ...                       libnuma: [ on  ]
> > > > ...        numa_num_possible_cpus: [ on  ]
> > > > ...                       libperl: [ on  ]
> > > > ...                     libpython: [ on  ]
> > > > ...                      libslang: [ on  ]
> > > > ...                     libcrypto: [ on  ]
> > > > ...                     libunwind: [ on  ]
> > > > ...            libdw-dwarf-unwind: [ on  ]
> > > > ...                          zlib: [ on  ]
> > > > ...                          lzma: [ on  ]
> > > > ...                     get_cpuid: [ on  ]
> > > > ...                           bpf: [ on  ]
> > > > 
> > > > Shoudln't we tell the user that babeltrace was linked too?
> > > 
> > > the logic is just to simply display the state of features
> > > which we provide in FEATURE_DISPLAY variable, which is
> > > believed to be common and important enough to display
> > > status about
> > > 
> > > maybe we could display it with 'make VF=1' output?
> > 
> > like in patch attached ;-)
> 
> with changelog
> 
> thanks,
> jirka

Arnaldo,
could you please check this one?

thanks,
jirka

> 
> 
> ---
> Display state of the rest of the features (FEATURE_TESTS_EXTRA)
> for 'make VF=1' build. These features are detected manually by
> perf's Makefile.config so they can't be displayed with the
> main list, but only after we're done in Makefile.config.
> 
>   $ make VF=1
>     BUILD:   Doing 'make -j4' parallel build
> 
>   Auto-detecting system features:
>   ...                         dwarf: [ on  ]
>   ...            dwarf_getlocations: [ on  ]
>   ...                         glibc: [ on  ]
>   ...                          gtk2: [ on  ]
> 
> SNIP
> 
>   ...                       timerfd: [ on  ]
>   ...                  sched_getcpu: [ on  ]
>   ...                           sdt: [ on  ]
>   ...                         setns: [ on  ]
> 
> extra features:
>   ...                        bionic: [ OFF ]
>   ...                    compile-32: [ on  ]
>   ...                   compile-x32: [ OFF ]
>   ...                cplus-demangle: [ on  ]
>   ...                         hello: [ OFF ]
>   ...                 libbabeltrace: [ on  ]
>   ...                       liberty: [ on  ]
>   ...                     liberty-z: [ on  ]
>   ...         libunwind-debug-frame: [ OFF ]
>   ...     libunwind-debug-frame-arm: [ OFF ]
>   ... libunwind-debug-frame-aarch64: [ OFF ]
> 
> SNIP
> 
> Link: http://lkml.kernel.org/n/tip-q4r73p2c6wfag2s38fpsim8v@git.kernel.org
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> ---
>  tools/perf/Makefile.config | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
> index 12dec6ea5ed2..92265b32dddd 100644
> --- a/tools/perf/Makefile.config
> +++ b/tools/perf/Makefile.config
> @@ -947,6 +947,10 @@ define print_var_code
>  endef
>  
>  ifeq ($(VF),1)
> +  # Display EXTRA features which are detected manualy
> +  # from here with feature_check call and thus cannot
> +  # be partof global state output.
> +  $(foreach feat,$(FEATURE_TESTS_EXTRA),$(call feature_print_status,$(feat),))
>    $(call print_var,prefix)
>    $(call print_var,bindir)
>    $(call print_var,libdir)
> -- 
> 2.13.6
>