Commit 6a2d28f7 authored Nov 23, 2020 by Giuliano Procida

ANDROID: kbuild: speed up ksym_dep_filter



This commit reduces the input that tr and sed need to consider to a
few lines and so makes the extraction of ksyms faster.

On my machine at least, builds are greatly slowed down by tr.

A single invocation of sed might be fast too but seems non-trivial.

Bug: 174773617
Change-Id: I98698ff8603d816c55d4922ccb5936364b5fd906
Signed-off-by: Giuliano Procida <gprocida@google.com>

parent 1309a091

scripts/Kbuild.include

+1 −1

Original line number	Diff line number	Diff line
		@@ -290,7 +290,7 @@ ksym_dep_filter = \
		$(CPP) $(call flags_nodeps,a_flags) -D__KSYM_DEPS__ $< ;; \
		boot\|build\|cpp_its_S\|cpp_lds_S\|dtc\|host\|vdso*) : ;; \
		*) echo "Don't know how to preprocess $(1)" >&2; false ;; \
		esac \| tr ";" "\n" \| sed -n 's/^.=== __KSYM_$.$ ===.*$$/_\1/p'
		esac \| fgrep '=== __KSYM_' \| tr ";" "\n" \| sed -n 's/^.=== __KSYM_$.$ ===.*$$/_\1/p'

		cmd_and_fixdep = \
		$(echo-cmd) $(cmd_$(1)); \