open-cas-linux/configure.d/1_bd_part_count.conf
Krzysztof Majzerowicz-Jaszcz f0af7cb52d Open CAS Linux kernel 5.18 support
This patch introduces the support for 5.18 kernel.

Signed-off-by: Krzysztof Majzerowicz-Jaszcz <krzysztof.majzerowicz-jaszcz@intel.com>
2022-10-24 09:53:01 +00:00

63 lines
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Bash

#!/bin/bash
#
# Copyright(c) 2012-2022 Intel Corporation
# SPDX-License-Identifier: BSD-3-Clause
#
. $(dirname $3)/conf_framework.sh
check() {
cur_name=$(basename $2)
config_file_path=$1
if compile_module $cur_name "struct gendisk *disk = NULL; struct xarray xa; xa = disk->part_tbl;" "linux/blkdev.h" ||
compile_module $cur_name "struct gendisk *disk = NULL; struct xarray xa; xa = disk->part_tbl;" "linux/genhd.h"
then
echo $cur_name "1" >> $config_file_path
elif compile_module $cur_name "struct gendisk *disk = NULL; struct disk_part_tbl *ptbl; ptbl = disk->part_tbl;" "linux/genhd.h"
then
echo $cur_name "2" >> $config_file_path
else
echo $cur_name "X" >> $config_file_path
fi
}
apply() {
case "$1" in
"1")
add_function "
static inline int cas_blk_get_part_count(struct block_device *bdev)
{
struct block_device *part;
unsigned long idx;
int count = 0;
xa_for_each(&bdev->bd_disk->part_tbl, idx, part) {
count++;
}
return count;
}" ;;
"2")
add_function "
static inline int cas_blk_get_part_count(struct block_device *bdev)
{
struct disk_part_tbl *ptbl;
int i, count = 0;
rcu_read_lock();
ptbl = rcu_dereference(bdev->bd_disk->part_tbl);
for (i = 0; i < ptbl->len; ++i) {
if (rcu_access_pointer(ptbl->part[i]))
count++;
}
rcu_read_unlock();
return count;
}" ;;
*)
exit 1
esac
}
conf_run $@