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Re: [PATCH 4/6] perf tools: Set parallel making options build-test

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On Fri, Jan 08, 2016 at 02:23:59PM +0000, Wang Nan wrote:
> 'make build-test' is painful because of time consuming. In a full test,
> all test cases are built twice with tools/perf/Makefile and
> tools/perf/Makefile.perf. 'Makefile' automatically computes parallel
> options for make, but 'Makefile.perf' not, so all test cases is built
> with one job. It is very slow.
> 
> This patch adds '-j' options to Makefile.perf testing. It computes
> parallel building options like what tools/perf/Makefile does, and pass
> '-j' option to Makefile.perf test.
> 
> Signed-off-by: Wang Nan <wangnan0@huawei.com>
> Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
> Cc: Jiri Olsa <jolsa@kernel.org>
> Cc: Namhyung Kim <namhyung@kernel.org>
> ---
>  tools/perf/tests/make | 23 ++++++++++++++++-------
>  1 file changed, 16 insertions(+), 7 deletions(-)
> 
> diff --git a/tools/perf/tests/make b/tools/perf/tests/make
> index 130be7c..bd9c61a 100644
> --- a/tools/perf/tests/make
> +++ b/tools/perf/tests/make
> @@ -3,7 +3,7 @@ ifeq ($(MAKECMDGOALS),)
>  # no target specified, trigger the whole suite
>  all:
>  	@echo "Testing Makefile";      $(MAKE) -sf tests/make MK=Makefile
> -	@echo "Testing Makefile.perf"; $(MAKE) -sf tests/make MK=Makefile.perf
> +	@echo "Testing Makefile.perf"; $(MAKE) -sf tests/make MK=Makefile.perf SET_PARALLEL=1
>  else
>  # run only specific test over 'Makefile'
>  %:
> @@ -12,6 +12,15 @@ endif
>  else
>  PERF := .
>  
> +PARALLEL_OPT=
> +ifeq ($(SET_PARALLEL),1)
> +  cores := $(shell (getconf _NPROCESSORS_ONLN || egrep -c '^processor|^CPU[0-9]' /proc/cpuinfo) 2>/dev/null)
> +  ifeq ($(cores),0)
> +    cores := 1
> +  endif
> +  PARALLEL_OPT="-j$(cores)"
> +endif

we could share this with Makefile, but there's probably no point to librarize single line ATM

Acked-by: Jiri Olsa <jolsa@kernel.org>

thanks,
jirka

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[PATCH 0/6] perf tools: Improve 'make build-test' Wang Nan <wangnan0@huawei.com> - 2016-01-08 15:30 +0100
  [PATCH 5/6] perf tools: Pass O option to Makefile.perf in build-test Wang Nan <wangnan0@huawei.com> - 2016-01-08 15:30 +0100
  [PATCH 2/6] perf tools: Add missing headers in perf's MANIFEST Wang Nan <wangnan0@huawei.com> - 2016-01-08 15:30 +0100
    [tip:perf/core] perf tools: Add missing headers in perf'  s MANIFEST tip-bot for Wang Nan <tipbot@zytor.com> - 2016-01-09 17:40 +0100
    Re: [PATCH] perf tools: Add missing sources in perf's MANIFEST "Wangnan (F)" <wangnan0@huawei.com> - 2016-01-11 10:50 +0100
      Re: [PATCH] perf tools: Add missing sources in perf's MANIFEST Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-11 15:20 +0100
    [PATCH] perf tools: Add missing sources in perf's MANIFEST Jiri Olsa <jolsa@redhat.com> - 2016-01-11 10:50 +0100
  [PATCH 4/6] perf tools: Set parallel making options build-test Wang Nan <wangnan0@huawei.com> - 2016-01-08 15:30 +0100
    Re: [PATCH 4/6] perf tools: Set parallel making options build-test Jiri Olsa <jolsa@redhat.com> - 2016-01-11 10:40 +0100
  Re: [PATCH 0/6] perf tools: Improve 'make build-test' Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-08 15:40 +0100
    Re: [PATCH 0/6] perf tools: Improve 'make build-test' "Wangnan (F)" <wangnan0@huawei.com> - 2016-01-11 04:00 +0100
      Re: [PATCH 0/6] perf tools: Improve 'make build-test' Jiri Olsa <jolsa@redhat.com> - 2016-01-11 09:50 +0100

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