Merge pull request #21 from micrakow/add_configure_script

Add configure script

configure

@@ -0,0 +1,106 @@
+#!/bin/bash
+#
+# Copyright(c) 2012-2019 Intel Corporation
+# SPDX-License-Identifier: BSD-3-Clause-Clear
+#
+
+MODULE_FILE=test_mod.c
+OBJ_MOD=test_mod.o
+KERN_VER=`uname -r`
+PWD=`pwd`
+NPROC=`nproc`
+DEFINE_FILE=modules/generated_defines.h
+
+
+add_define() {
+   echo -n "#define " >> $DEFINE_FILE
+   for arg in "$@"; do
+       echo -e "$arg" >> $DEFINE_FILE
+   done
+}
+
+add_function() {
+	for arg in "$@"; do
+		echo -e "$arg" >> $DEFINE_FILE
+	done
+}
+
+compile_module(){
+	if [ $# -gt 1 ]
+	then
+		INCLUDE="#include <$2>"
+	else
+		INCLUDE=""
+	fi
+
+############# TEST MODULE #############
+cat > $MODULE_FILE << EOF
+#include <linux/module.h>
+#include <linux/kernel.h>
+$INCLUDE
+
+int init_module(void) {
+	$1;
+	return 0;
+}
+void cleanup_module(void) {};
+EOF
+#######################################
+
+	make -C /lib/modules/$KERN_VER/build M=$PWD modules\
+		obj-m=$OBJ_MOD -j$NPROC &> /dev/null
+
+	local ret=$?
+	if [ $ret -eq 0 ]; then
+		make -j$NPROC -C /lib/modules/$KERN_VER/build M=$PWD clean\
+			obj-m=test.o &> /dev/null
+	fi
+
+	return $ret
+}
+
+kernel_not_supp_fail() {
+	echo "Current kernel is not supported!"
+	rm $DEFINE_FILE
+	exit 1
+}
+
+rm -f $DEFINE_FILE
+
+compile_module "part_round_stats(1, 1)" "linux/genhd.h"
+if [ $? -eq 0 ]; then
+	add_define "CAS_PART_ROUND_STATS(q, cpu, part) part_round_stats(cpu, part)"
+else
+	compile_module "part_round_stats(NULL, 1, 1)" "linux/genhd.h"
+	if [ $? -eq 0 ]; then
+		add_define "CAS_PART_ROUND_STATS(q, cpu, part)\\"\
+			"\tpart_round_stats(q, cpu, part)"
+	fi
+fi
+
+
+compile_module "part_inc_in_flight(1, 1)" "linux/genhd.h"
+if [ $? -eq 0 ]; then
+	add_define "CAS_PART_INC_IN_FLIGHT(q, cpu, part)\\"\
+		"\tpart_inc_in_flight(cpu, part)"
+else
+	compile_module "part_inc_in_flight(NULL, 1, 1)" "linux/genhd.h"
+	if [ $? -eq 0 ]; then
+		add_define "CAS_PART_INC_IN_FLIGHT(q, cpu, part)\\"\
+			"\tpart_inc_in_flight(q, cpu, part)"
+	fi
+fi
+
+
+compile_module "part_dec_in_flight(1, 1)" "linux/genhd.h"
+if [ $? -eq 0 ]; then
+	add_define "CAS_PART_DEC_IN_FLIGHT(q, cpu, part)\\"\
+		"\tpart_dec_in_flight(cpu, part)"
+else
+	compile_module "part_dec_in_flight(NULL, 1, 1)" "linux/genhd.h"
+	if [ $? -eq 0 ]; then
+		add_define "CAS_PART_DEC_IN_FLIGHT(q, cpu, part)\\"\
+			"\tpart_dec_in_flight(q, cpu, part)"
+	fi
+fi
+

modules/Makefile

@@ -47,7 +47,7 @@ default: $(VERSION_FILE) sync
 
 clean:
 	cd $(KERNEL_DIR) && make M=$(PWD) clean
-
+	rm $(PWD)/generated_defines.h
 distclean: clean distsync
 
 install:

modules/cas_cache/linux_kernel_version.h

@@ -38,6 +38,8 @@
 #include <linux/nmi.h>
 #include <linux/ratelimit.h>
 
+#include "generated_defines.h"
+
 #ifdef CONFIG_SLAB
 #include <linux/slab_def.h>
 #endif
@@ -503,10 +505,10 @@ static inline void cas_generic_start_io_acct(struct request_queue *q,
 {
 	int cpu = part_stat_lock();
 
-	part_round_stats(cpu, part);
+	CAS_PART_ROUND_STATS(q, cpu, part);
 	part_stat_inc(cpu, part, ios[rw]);
 	part_stat_add(cpu, part, sectors[rw], sectors);
-	part_inc_in_flight(part, rw);
+	CAS_PART_INC_IN_FLIGHT(q, part, rw);
 
 	part_stat_unlock();
 }
@@ -518,8 +520,8 @@ static inline void cas_generic_end_io_acct(struct request_queue *q,
 	int cpu = part_stat_lock();
 
 	part_stat_add(cpu, part, ticks[rw], duration);
-	part_round_stats(cpu, part);
+	CAS_PART_ROUND_STATS(q, cpu, part);
-	part_dec_in_flight(part, rw);
+	CAS_PART_DEC_IN_FLIGHT(q, part, rw);
 
 	part_stat_unlock();
 }