linux-kernel - Re: [PATCH 1/5] perf tools: Do not display extra info when there is nothing to build

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Message-ID: <20200507145217.GA32641@kernel.org>
Date:   Thu, 7 May 2020 11:52:17 -0300
From:   Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To:     Jiri Olsa <jolsa@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Michael Petlan <mpetlan@...hat.com>,
        Ian Rogers <irogers@...gle.com>, Paul Khuong <pvk@....ca>
Subject: Re: [PATCH 1/5] perf tools: Do not display extra info when there is
 nothing to build

Em Thu, May 07, 2020 at 11:50:20AM +0200, Jiri Olsa escreveu:
> Even with fully built tree, we still display extra output
> when make is invoked, like:
> 
>   $ make
>     BUILD:   Doing 'make -j8' parallel build
>     DESCEND  plugins
>   make[3]: Nothing to be done for 'plugins/libtraceevent-dynamic-list'.
> 
> Changing the make descend directly to plugins directory,
> which quiets those messages down.

Thanks a lot for getting rid of that nuisance :-)

- Arnaldo
 
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> ---
>  tools/perf/Makefile.perf | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
> index 94a495594e99..30e41dcd4095 100644
> --- a/tools/perf/Makefile.perf
> +++ b/tools/perf/Makefile.perf
> @@ -278,6 +278,7 @@ strip-libs = $(filter-out -l%,$(1))
>  
>  ifneq ($(OUTPUT),)
>    TE_PATH=$(OUTPUT)
> +  PLUGINS_PATH=$(OUTPUT)
>    BPF_PATH=$(OUTPUT)
>    SUBCMD_PATH=$(OUTPUT)
>    LIBPERF_PATH=$(OUTPUT)
> @@ -288,6 +289,7 @@ else
>  endif
>  else
>    TE_PATH=$(TRACE_EVENT_DIR)
> +  PLUGINS_PATH=$(TRACE_EVENT_DIR)plugins/
>    API_PATH=$(LIB_DIR)
>    BPF_PATH=$(BPF_DIR)
>    SUBCMD_PATH=$(SUBCMD_DIR)
> @@ -297,7 +299,7 @@ endif
>  LIBTRACEEVENT = $(TE_PATH)libtraceevent.a
>  export LIBTRACEEVENT
>  
> -LIBTRACEEVENT_DYNAMIC_LIST = $(TE_PATH)plugins/libtraceevent-dynamic-list
> +LIBTRACEEVENT_DYNAMIC_LIST = $(PLUGINS_PATH)libtraceevent-dynamic-list
>  
>  #
>  # The static build has no dynsym table, so this does not work for
> @@ -756,10 +758,10 @@ $(LIBTRACEEVENT): FORCE
>  	$(Q)$(MAKE) -C $(TRACE_EVENT_DIR) $(LIBTRACEEVENT_FLAGS) O=$(OUTPUT) $(OUTPUT)libtraceevent.a
>  
>  libtraceevent_plugins: FORCE
> -	$(Q)$(MAKE) -C $(TRACE_EVENT_DIR) $(LIBTRACEEVENT_FLAGS) O=$(OUTPUT) plugins
> +	$(Q)$(MAKE) -C $(TRACE_EVENT_DIR)plugins $(LIBTRACEEVENT_FLAGS) O=$(OUTPUT) plugins
>  
>  $(LIBTRACEEVENT_DYNAMIC_LIST): libtraceevent_plugins
> -	$(Q)$(MAKE) -C $(TRACE_EVENT_DIR) $(LIBTRACEEVENT_FLAGS) O=$(OUTPUT) $(OUTPUT)plugins/libtraceevent-dynamic-list
> +	$(Q)$(MAKE) -C $(TRACE_EVENT_DIR)plugins $(LIBTRACEEVENT_FLAGS) O=$(OUTPUT) $(OUTPUT)libtraceevent-dynamic-list
>  
>  $(LIBTRACEEVENT)-clean:
>  	$(call QUIET_CLEAN, libtraceevent)
> -- 
> 2.25.4
> 

-- 

- Arnaldo