tools: separate out shared radix-tree components

The core components contained within the radix-tree tests which provide
shims for kernel headers and access to the maple tree are useful for
testing other things, so separate them out and make the radix tree tests
dependent on the shared components.

This lays the groundwork for us to add VMA tests of the newly introduced
vma.c file.

Link: https://lkml.kernel.org/r/1ee720c265808168e0d75608e687607d77c36719.1722251717.git.lorenzo.stoakes@oracle.com
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Brendan Higgins <brendanhiggins@google.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: David Gow <davidgow@google.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Kees Cook <kees@kernel.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Rae Moar <rmoar@google.com>
Cc: SeongJae Park <sj@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Pengfei Xu <pengfei.xu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

tools/testing/radix-tree/.gitignore

@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0-only
+generated/autoconf.h
 generated/bit-length.h
 generated/map-shift.h
 idr.c

tools/testing/radix-tree/Makefile

@@ -1,77 +1,29 @@
 # SPDX-License-Identifier: GPL-2.0
 
-CFLAGS += -I. -I../../include -I../../../lib -g -Og -Wall \
-	  -D_LGPL_SOURCE -fsanitize=address -fsanitize=undefined
-LDFLAGS += -fsanitize=address -fsanitize=undefined
-LDLIBS+= -lpthread -lurcu
+.PHONY: clean
+
 TARGETS = main idr-test multiorder xarray maple
-LIBS := slab.o find_bit.o bitmap.o hweight.o vsprintf.o
-CORE_OFILES := xarray.o radix-tree.o idr.o linux.o test.o maple.o $(LIBS)
-OFILES = main.o $(CORE_OFILES) regression1.o regression2.o regression3.o \
-	 regression4.o tag_check.o multiorder.o idr-test.o iteration_check.o \
-	 iteration_check_2.o benchmark.o
-
-ifndef SHIFT
-	SHIFT=3
-endif
-
-ifeq ($(BUILD), 32)
-	CFLAGS += -m32
-	LDFLAGS += -m32
-LONG_BIT := 32
-endif
-
-ifndef LONG_BIT
-LONG_BIT := $(shell getconf LONG_BIT)
-endif
+CORE_OFILES = $(SHARED_OFILES) xarray.o maple.o test.o
+OFILES = main.o $(CORE_OFILES) regression1.o regression2.o \
+	 regression3.o regression4.o tag_check.o multiorder.o idr-test.o \
+	iteration_check.o iteration_check_2.o benchmark.o
 
 targets: generated/map-shift.h generated/bit-length.h $(TARGETS)
 
+include ../shared/shared.mk
+
 main:	$(OFILES)
 
 idr-test.o: ../../../lib/test_ida.c
 idr-test: idr-test.o $(CORE_OFILES)
 
-xarray: $(CORE_OFILES)
+xarray: $(CORE_OFILES) xarray.o
 
-maple: $(CORE_OFILES)
+maple: $(CORE_OFILES) maple.o
 
 multiorder: multiorder.o $(CORE_OFILES)
 
 clean:
-	$(RM) $(TARGETS) *.o radix-tree.c idr.c generated/map-shift.h generated/bit-length.h
+	$(RM) $(TARGETS) *.o radix-tree.c idr.c generated/*
 
-vpath %.c ../../lib
-
-$(OFILES): Makefile *.h */*.h generated/map-shift.h generated/bit-length.h \
-	../../include/linux/*.h \
-	../../include/asm/*.h \
-	../../../include/linux/xarray.h \
-	../../../include/linux/maple_tree.h \
-	../../../include/linux/radix-tree.h \
-	../../../lib/radix-tree.h \
-	../../../include/linux/idr.h
-
-radix-tree.c: ../../../lib/radix-tree.c
-	sed -e 's/^static //' -e 's/__always_inline //' -e 's/inline //' < $< > $@
-
-idr.c: ../../../lib/idr.c
-	sed -e 's/^static //' -e 's/__always_inline //' -e 's/inline //' < $< > $@
-
-xarray.o: ../../../lib/xarray.c ../../../lib/test_xarray.c
-
-maple.o: ../../../lib/maple_tree.c ../../../lib/test_maple_tree.c
-
-generated/map-shift.h:
-	@if ! grep -qws $(SHIFT) generated/map-shift.h; then		\
-		echo "#define XA_CHUNK_SHIFT $(SHIFT)" >		\
-				generated/map-shift.h;			\
-	fi
-
-generated/bit-length.h: FORCE
-	@if ! grep -qws CONFIG_$(LONG_BIT)BIT generated/bit-length.h; then   \
-		echo "Generating $@";                                        \
-		echo "#define CONFIG_$(LONG_BIT)BIT 1" > $@;                 \
-	fi
-
-FORCE: ;
+$(OFILES): $(SHARED_DEPS) *.h

tools/testing/radix-tree/xarray.c

@@ -4,17 +4,9 @@
  * Copyright (c) 2018 Matthew Wilcox <willy@infradead.org>
  */
 
-#define XA_DEBUG
+#include "xarray-shared.h"
 #include "test.h"
 
-#define module_init(x)
-#define module_exit(x)
-#define MODULE_AUTHOR(x)
-#define MODULE_DESCRIPTION(X)
-#define MODULE_LICENSE(x)
-#define dump_stack()	assert(0)
-
-#include "../../../lib/xarray.c"
 #undef XA_DEBUG
 #include "../../../lib/test_xarray.c"
 

tools/testing/shared/maple-shared.h

@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#define CONFIG_DEBUG_MAPLE_TREE
+#define CONFIG_MAPLE_SEARCH
+#define MAPLE_32BIT (MAPLE_NODE_SLOTS > 31)
+#include "shared.h"
+#include <stdlib.h>
+#include <time.h>
+#include "linux/init.h"

tools/testing/shared/maple-shim.c

@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+/* Very simple shim around the maple tree. */
+
+#include "maple-shared.h"
+
+#include "../../../lib/maple_tree.c"

tools/testing/shared/shared.h

@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#include <linux/types.h>
+#include <linux/bug.h>
+#include <linux/kernel.h>
+#include <linux/bitops.h>
+
+#include <linux/gfp.h>
+#include <linux/rcupdate.h>
+
+#ifndef module_init
+#define module_init(x)
+#endif
+
+#ifndef module_exit
+#define module_exit(x)
+#endif
+
+#ifndef MODULE_AUTHOR
+#define MODULE_AUTHOR(x)
+#endif
+
+#ifndef MODULE_LICENSE
+#define MODULE_LICENSE(x)
+#endif
+
+#ifndef MODULE_DESCRIPTION
+#define MODULE_DESCRIPTION(x)
+#endif
+
+#ifndef dump_stack
+#define dump_stack()	assert(0)
+#endif

tools/testing/shared/shared.mk

@@ -0,0 +1,72 @@
+# SPDX-License-Identifier: GPL-2.0
+
+CFLAGS += -I../shared -I. -I../../include -I../../../lib -g -Og -Wall \
+	  -D_LGPL_SOURCE -fsanitize=address -fsanitize=undefined
+LDFLAGS += -fsanitize=address -fsanitize=undefined
+LDLIBS += -lpthread -lurcu
+LIBS := slab.o find_bit.o bitmap.o hweight.o vsprintf.o
+SHARED_OFILES = xarray-shared.o radix-tree.o idr.o linux.o $(LIBS)
+
+SHARED_DEPS = Makefile ../shared/shared.mk ../shared/*.h generated/map-shift.h \
+	generated/bit-length.h generated/autoconf.h \
+	../../include/linux/*.h \
+	../../include/asm/*.h \
+	../../../include/linux/xarray.h \
+	../../../include/linux/maple_tree.h \
+	../../../include/linux/radix-tree.h \
+	../../../lib/radix-tree.h \
+	../../../include/linux/idr.h
+
+ifndef SHIFT
+	SHIFT=3
+endif
+
+ifeq ($(BUILD), 32)
+	CFLAGS += -m32
+	LDFLAGS += -m32
+LONG_BIT := 32
+endif
+
+ifndef LONG_BIT
+LONG_BIT := $(shell getconf LONG_BIT)
+endif
+
+%.o: ../shared/%.c
+	$(CC) -c $(CFLAGS) $< -o $@
+
+vpath %.c ../../lib
+
+$(SHARED_OFILES): $(SHARED_DEPS)
+
+radix-tree.c: ../../../lib/radix-tree.c
+	sed -e 's/^static //' -e 's/__always_inline //' -e 's/inline //' < $< > $@
+
+idr.c: ../../../lib/idr.c
+	sed -e 's/^static //' -e 's/__always_inline //' -e 's/inline //' < $< > $@
+
+xarray-shared.o: ../shared/xarray-shared.c ../../../lib/xarray.c \
+	../../../lib/test_xarray.c
+
+maple-shared.o: ../shared/maple-shared.c ../../../lib/maple_tree.c \
+	../../../lib/test_maple_tree.c
+
+generated/autoconf.h:
+	@mkdir -p generated
+	cp ../shared/autoconf.h generated/autoconf.h
+
+generated/map-shift.h:
+	@mkdir -p generated
+	@if ! grep -qws $(SHIFT) generated/map-shift.h; then            \
+		echo "Generating $@";                                   \
+		echo "#define XA_CHUNK_SHIFT $(SHIFT)" >                \
+				generated/map-shift.h;                  \
+	fi
+
+generated/bit-length.h: FORCE
+	@mkdir -p generated
+	@if ! grep -qws CONFIG_$(LONG_BIT)BIT generated/bit-length.h; then   \
+		echo "Generating $@";                                        \
+		echo "#define CONFIG_$(LONG_BIT)BIT 1" > $@;                 \
+	fi
+
+FORCE: ;

tools/testing/shared/xarray-shared.c

@@ -0,0 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "xarray-shared.h"
+
+#include "../../../lib/xarray.c"

tools/testing/shared/xarray-shared.h

@@ -0,0 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#define XA_DEBUG
+#include "shared.h"