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2cfbe880f0
Implement automatic parallel builds when building in tools/perf: $ time make # [ perf build: Doing 'make -j12' parallel build. ] Auto-detecting system features: ... real 0m9.265s user 0m59.888s sys 0m6.082s On GNU make achieving this is not particularly easy, it requires a separate makefile, which then invokes the main Makefile. ( Note: this patch adds Makefile.parallel to show the concept - the two makefiles will be flipped in the next patch to avoid having to specify -f to get parallelism in the default build. ) Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/n/tip-dvBjwqiTyzrufzkz8oanhpf9@git.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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