scripts/tags.sh: improve compiled sources generation

Use grep instead of sed for all compiled sources generation, it is three
times more efficient.

Signed-off-by: Jialu Xu <xujialu@vimux.org>
Tested-by: Carlos Llamas <cmllamas@google.com>
Link: https://lore.kernel.org/r/20230601010402.71040-1-xujialu@vimux.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/scripts/tags.sh b/scripts/tags.sh
index ea31640..938dba2 100755 (executable)
--- a/scripts/tags.sh
+++ b/scripts/tags.sh
@@ -98,7 +98,7 @@ all_compiled_sources()
        {
                echo include/generated/autoconf.h
                find $ignore -name "*.cmd" -exec \
-                       sed -n -E 's/^source_.* (.*)/\1/p; s/^  (\S.*) \\/\1/p' {} \+ |
+                       grep -Poh '(?<=^  )\S+|(?<== )\S+[^\\](?=$)' {} \+ |
                awk '!a[$0]++'
        } | xargs realpath -esq $([ -z "$KBUILD_ABS_SRCTREE" ] && echo --relative-to=.) |
        sort -u