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Commit 47a41f65 authored by Masahiro Yamada's avatar Masahiro Yamada Committed by Greg Kroah-Hartman
Browse files

kheaders: explain why include/config/autoconf.h is excluded from md5sum 



commit f276031b4e2f4c961ed6d8a42f0f0124ccac2e09 upstream.

This comment block explains why include/generated/compile.h is omitted,
but nothing about include/generated/autoconf.h, which might be more
difficult to understand. Add more comments.

Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: default avatarMatthias Maennich <maennich@google.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 7caddaa9

kernel/gen_kheaders.sh

+9 −2
Original line number Diff line number Diff line
@@ -32,8 +32,15 @@ fi 
all_dirs="$all_dirs $dir_list"



# include/generated/compile.h is ignored because it is touched even when none

# of the source files changed. This causes pointless regeneration, so let us

# ignore them for md5 calculation.

# of the source files changed.

#

# When Kconfig regenerates include/generated/autoconf.h, its timestamp is

# updated, but the contents might be still the same. When any CONFIG option is

# changed, Kconfig touches the corresponding timestamp file include/config/*.h.

# Hence, the md5sum detects the configuration change anyway. We do not need to

# check include/generated/autoconf.h explicitly.

#

# Ignore them for md5 calculation to avoid pointless regeneration.

headers_md5="$(find $all_dirs -name "*.h"			|

		grep -v "include/generated/compile.h"	|

		grep -v "include/generated/autoconf.h"	|