Messages in this thread | | | From | Masahiro Yamada <> | Date | Wed, 3 May 2017 13:49:29 +0900 | Subject | Re: [PATCH] Makefile: evaluate LDFLAGS_BUILD_ID only once |
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2017-05-01 1:16 GMT+09:00 Rabin Vincent <rabin@rab.in>: > Evaluate LDFLAGS_BUILD_ID (which involves invoking the compiler) only > once instead of over and over. > > This provides a ~20% reduction in null build time with x86 allnoconfig: > > $ make allnoconfig && make -j8 > $ perf stat -r5 -e sched:sched_process_exec make -j8 > - 2 119 sched:sched_process_exec > + 1 878 sched:sched_process_exec > > - 1,238817018 seconds time elapsed > + 0,971020553 seconds time elapsed > > Signed-off-by: Rabin Vincent <rabin@rab.in>
Applied to linux-kbuild/kbuild. Thanks!
-- Best Regards Masahiro Yamada
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