kheaders: Move from proc to sysfs

The kheaders archive consisting of the kernel headers used for compiling
bpf programs is in /proc. However there is concern that moving it here
will make it permanent. Let us move it to /sys/kernel as discussed [1].

[1] https://lore.kernel.org/patchwork/patch/1067310/#1265969

Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 0 insertions, 89 deletions

diff --git a/kernel/gen_ikh_data.sh b/kernel/gen_ikh_data.sh
deleted file mode 100755
index 591a94f7b387..000000000000
--- a/kernel/gen_ikh_data.sh
+++ /dev/null
@@ -1,89 +0,0 @@
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
-
-# This script generates an archive consisting of kernel headers
-# for CONFIG_IKHEADERS_PROC.
-set -e
-spath="$(dirname "$(readlink -f "$0")")"
-kroot="$spath/.."
-outdir="$(pwd)"
-tarfile=$1
-cpio_dir=$outdir/$tarfile.tmp
-
-# Script filename relative to the kernel source root
-# We add it to the archive because it is small and any changes
-# to this script will also cause a rebuild of the archive.
-sfile="$(realpath --relative-to $kroot "$(readlink -f "$0")")"
-
-src_file_list="
-include/
-arch/$SRCARCH/include/
-$sfile
-"
-
-obj_file_list="
-include/
-arch/$SRCARCH/include/
-"
-
-# Support incremental builds by skipping archive generation
-# if timestamps of files being archived are not changed.
-
-# This block is useful for debugging the incremental builds.
-# Uncomment it for debugging.
-# iter=1
-# if [ ! -f /tmp/iter ]; then echo 1 > /tmp/iter;
-# else; 	iter=$(($(cat /tmp/iter) + 1)); fi
-# find $src_file_list -type f | xargs ls -lR > /tmp/src-ls-$iter
-# find $obj_file_list -type f | xargs ls -lR > /tmp/obj-ls-$iter
-
-# 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.
-pushd $kroot > /dev/null
-src_files_md5="$(find $src_file_list -type f                       |
-		grep -v "include/generated/compile.h"		   |
-		xargs ls -lR | md5sum | cut -d ' ' -f1)"
-popd > /dev/null
-obj_files_md5="$(find $obj_file_list -type f                       |
-		grep -v "include/generated/compile.h"		   |
-		xargs ls -lR | md5sum | cut -d ' ' -f1)"
-
-if [ -f $tarfile ]; then tarfile_md5="$(md5sum $tarfile | cut -d ' ' -f1)"; fi
-if [ -f kernel/kheaders.md5 ] &&
-	[ "$(cat kernel/kheaders.md5|head -1)" == "$src_files_md5" ] &&
-	[ "$(cat kernel/kheaders.md5|head -2|tail -1)" == "$obj_files_md5" ] &&
-	[ "$(cat kernel/kheaders.md5|tail -1)" == "$tarfile_md5" ]; then
-		exit
-fi
-
-if [ "${quiet}" != "silent_" ]; then
-       echo "  GEN     $tarfile"
-fi
-
-rm -rf $cpio_dir
-mkdir $cpio_dir
-
-pushd $kroot > /dev/null
-for f in $src_file_list;
-	do find "$f" ! -name "*.cmd" ! -name ".*";
-done | cpio --quiet -pd $cpio_dir
-popd > /dev/null
-
-# The second CPIO can complain if files already exist which can
-# happen with out of tree builds. Just silence CPIO for now.
-for f in $obj_file_list;
-	do find "$f" ! -name "*.cmd" ! -name ".*";
-done | cpio --quiet -pd $cpio_dir >/dev/null 2>&1
-
-# Remove comments except SDPX lines
-find $cpio_dir -type f -print0 |
-	xargs -0 -P8 -n1 perl -pi -e 'BEGIN {undef $/;}; s/\/\*((?!SPDX).)*?\*\///smg;'
-
-tar -Jcf $tarfile -C $cpio_dir/ . > /dev/null
-
-echo "$src_files_md5" > kernel/kheaders.md5
-echo "$obj_files_md5" >> kernel/kheaders.md5
-echo "$(md5sum $tarfile | cut -d ' ' -f1)" >> kernel/kheaders.md5
-
-rm -rf $cpio_dir