scripts: get_feat.pl: use its implementation for list-arch.sh

Add support for the same output format as the bash script,
and use its implementation instead of the previous one.

I opted to do such patch in order to have a single script
responsible for parsing Documentation/features and
produce different outputs.

As someone may rely on the past format, which is easy
to parse it, get_feat.pl now gains a new command with
the same output format as the previous script.

As a side effect, the perl script is a lot faster, as it reads
each file only once, instead of parsing files several times
via a for command and grep commands inside it.

This patch also changes the features list order to be
case-insensitive, in order to better match the output of
the existing script.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/a97f49677805ad4e6b982d02c0db8c9dfbbd20a6.1606748711.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

1 files changed, 2 insertions, 15 deletions

diff --git a/Documentation/features/list-arch.sh b/Documentation/features/list-arch.sh
index 1ec47c3bb5fa..e73aa35848f0 100755
--- a/Documentation/features/list-arch.sh
+++ b/Documentation/features/list-arch.sh
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 #
 # Small script that visualizes the kernel feature support status
 # of an architecture.
@@ -7,18 +8,4 @@
 
 ARCH=${1:-$(uname -m | sed 's/x86_64/x86/' | sed 's/i386/x86/')}
 
-cd $(dirname $0)
-echo "#"
-echo "# Kernel feature support matrix of the '$ARCH' architecture:"
-echo "#"
-
-for F in */*/arch-support.txt; do
-  SUBSYS=$(echo $F | cut -d/ -f1)
-  N=$(grep -h "^# Feature name:"        $F | cut -c25-)
-  C=$(grep -h "^#         Kconfig:"     $F | cut -c25-)
-  D=$(grep -h "^#         description:" $F | cut -c25-)
-  S=$(grep -hv "^#" $F | grep -w $ARCH | cut -d\| -f3)
-
-  printf "%10s/%-22s:%s| %35s # %s\n" "$SUBSYS" "$N" "$S" "$C" "$D"
-done
-
+$(dirname $0)/../../scripts/get_feat.pl list --arch $ARCH