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Date: Thu, 27 Jun 2024 20:46:11 +0100
From: Lorenzo Stoakes <lstoakes@...il.com>
To: "Liam R. Howlett" <Liam.Howlett@...cle.com>,
Andrew Morton <akpm@...ux-foundation.org>,
linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-mm@...ck.org, Vlastimil Babka <vbabka@...e.cz>,
Matthew Wilcox <willy@...radead.org>,
Alexander Viro <viro@...iv.linux.org.uk>,
Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>,
Eric Biederman <ebiederm@...ssion.com>, Kees Cook <kees@...nel.org>,
Suren Baghdasaryan <surenb@...gle.com>
Subject: Re: [RFC PATCH 6/7] tools: separate out shared radix-tree components
On Thu, Jun 27, 2024 at 01:59:18PM -0400, Liam R. Howlett wrote:
> * Lorenzo Stoakes <lstoakes@...il.com> [240627 06:39]:
> > 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.
>
> This separation and subsequent patch requires building the
> xarray-hsared, radix-tree, idr, find_bit, and bitmap .o files which are
> unneeded for the target 'main'. I'm not a build expert on how to fix
> this, but could that be reduced to the minimum set somehow?
I'm confused, the existing Makefile specified:
CORE_OFILES := xarray.o radix-tree.o idr.o linux.o test.o find_bit.o bitmap.o \
slab.o maple.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
main: $(OFILES)
Making all of the files you mentioned dependencies of main no? (xarray-shared
being a subset of xarray.o which requires it anyway)
I'm not sure this is a huge big deal as these are all rather small :)
>
> >
> > Signed-off-by: Lorenzo Stoakes <lstoakes@...il.com>
> > ---
> > tools/testing/radix-tree/Makefile | 68 +++----------------
> > tools/testing/radix-tree/maple.c | 14 +---
> > tools/testing/radix-tree/xarray.c | 9 +--
> > tools/testing/shared/autoconf.h | 2 +
> > tools/testing/{radix-tree => shared}/bitmap.c | 0
> > tools/testing/{radix-tree => shared}/linux.c | 0
> > .../{radix-tree => shared}/linux/bug.h | 0
> > .../{radix-tree => shared}/linux/cpu.h | 0
> > .../{radix-tree => shared}/linux/idr.h | 0
> > .../{radix-tree => shared}/linux/init.h | 0
> > .../{radix-tree => shared}/linux/kconfig.h | 0
> > .../{radix-tree => shared}/linux/kernel.h | 0
> > .../{radix-tree => shared}/linux/kmemleak.h | 0
> > .../{radix-tree => shared}/linux/local_lock.h | 0
> > .../{radix-tree => shared}/linux/lockdep.h | 0
> > .../{radix-tree => shared}/linux/maple_tree.h | 0
> > .../{radix-tree => shared}/linux/percpu.h | 0
> > .../{radix-tree => shared}/linux/preempt.h | 0
> > .../{radix-tree => shared}/linux/radix-tree.h | 0
> > .../{radix-tree => shared}/linux/rcupdate.h | 0
> > .../{radix-tree => shared}/linux/xarray.h | 0
> > tools/testing/shared/maple-shared.h | 9 +++
> > tools/testing/shared/maple-shim.c | 7 ++
> > tools/testing/shared/shared.h | 34 ++++++++++
> > tools/testing/shared/shared.mk | 68 +++++++++++++++++++
> > .../testing/shared/trace/events/maple_tree.h | 5 ++
> > tools/testing/shared/xarray-shared.c | 5 ++
> > tools/testing/shared/xarray-shared.h | 4 ++
> > 28 files changed, 147 insertions(+), 78 deletions(-)
> > create mode 100644 tools/testing/shared/autoconf.h
> > rename tools/testing/{radix-tree => shared}/bitmap.c (100%)
> > rename tools/testing/{radix-tree => shared}/linux.c (100%)
> > rename tools/testing/{radix-tree => shared}/linux/bug.h (100%)
> > rename tools/testing/{radix-tree => shared}/linux/cpu.h (100%)
> > rename tools/testing/{radix-tree => shared}/linux/idr.h (100%)
> > rename tools/testing/{radix-tree => shared}/linux/init.h (100%)
> > rename tools/testing/{radix-tree => shared}/linux/kconfig.h (100%)
> > rename tools/testing/{radix-tree => shared}/linux/kernel.h (100%)
> > rename tools/testing/{radix-tree => shared}/linux/kmemleak.h (100%)
> > rename tools/testing/{radix-tree => shared}/linux/local_lock.h (100%)
> > rename tools/testing/{radix-tree => shared}/linux/lockdep.h (100%)
> > rename tools/testing/{radix-tree => shared}/linux/maple_tree.h (100%)
> > rename tools/testing/{radix-tree => shared}/linux/percpu.h (100%)
> > rename tools/testing/{radix-tree => shared}/linux/preempt.h (100%)
> > rename tools/testing/{radix-tree => shared}/linux/radix-tree.h (100%)
> > rename tools/testing/{radix-tree => shared}/linux/rcupdate.h (100%)
> > rename tools/testing/{radix-tree => shared}/linux/xarray.h (100%)
> > create mode 100644 tools/testing/shared/maple-shared.h
> > create mode 100644 tools/testing/shared/maple-shim.c
> > create mode 100644 tools/testing/shared/shared.h
> > create mode 100644 tools/testing/shared/shared.mk
> > create mode 100644 tools/testing/shared/trace/events/maple_tree.h
> > create mode 100644 tools/testing/shared/xarray-shared.c
> > create mode 100644 tools/testing/shared/xarray-shared.h
> >
> > diff --git a/tools/testing/radix-tree/Makefile b/tools/testing/radix-tree/Makefile
> > index 7527f738b4a1..29d607063749 100644
> > --- a/tools/testing/radix-tree/Makefile
> > +++ b/tools/testing/radix-tree/Makefile
> > @@ -1,29 +1,16 @@
> > # 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
> > -TARGETS = main idr-test multiorder xarray maple
> > -CORE_OFILES := xarray.o radix-tree.o idr.o linux.o test.o find_bit.o bitmap.o \
> > - slab.o maple.o
> > -OFILES = main.o $(CORE_OFILES) regression1.o regression2.o regression3.o \
> > - regression4.o tag_check.o multiorder.o idr-test.o iteration_check.o \
> > - iteration_check_2.o benchmark.o
> > +.PHONY: default
> >
> > -ifndef SHIFT
> > - SHIFT=3
> > -endif
> > +default: main
> >
> > -ifeq ($(BUILD), 32)
> > - CFLAGS += -m32
> > - LDFLAGS += -m32
> > -LONG_BIT := 32
> > -endif
> > +include ../shared/shared.mk
> >
> > -ifndef LONG_BIT
> > -LONG_BIT := $(shell getconf LONG_BIT)
> > -endif
> > +TARGETS = main idr-test multiorder xarray maple
> > +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)
> >
> > @@ -32,46 +19,13 @@ 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) $(TARGETS) *.o radix-tree.c idr.c generated/map-shift.h generated/bit-length.h
> >
> > -vpath %.c ../../lib
> > -
> > -$(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 */*.h
> > diff --git a/tools/testing/radix-tree/maple.c b/tools/testing/radix-tree/maple.c
> > index f1caf4bcf937..5b53ecf22fc4 100644
> > --- a/tools/testing/radix-tree/maple.c
> > +++ b/tools/testing/radix-tree/maple.c
> > @@ -8,20 +8,8 @@
> > * difficult to handle in kernel tests.
> > */
> >
> > -#define CONFIG_DEBUG_MAPLE_TREE
> > -#define CONFIG_MAPLE_SEARCH
> > -#define MAPLE_32BIT (MAPLE_NODE_SLOTS > 31)
> > +#include "maple-shared.h"
> > #include "test.h"
> > -#include <stdlib.h>
> > -#include <time.h>
> > -#include "linux/init.h"
> > -
> > -#define module_init(x)
> > -#define module_exit(x)
> > -#define MODULE_AUTHOR(x)
> > -#define MODULE_LICENSE(x)
> > -#define dump_stack() assert(0)
> > -
> > #include "../../../lib/maple_tree.c"
> > #include "../../../lib/test_maple_tree.c"
> >
> > diff --git a/tools/testing/radix-tree/xarray.c b/tools/testing/radix-tree/xarray.c
> > index f20e12cbbfd4..253208a8541b 100644
> > --- a/tools/testing/radix-tree/xarray.c
> > +++ b/tools/testing/radix-tree/xarray.c
> > @@ -4,16 +4,9 @@
> > * Copyright (c) 2018 Matthew Wilcox <willy@...radead.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_LICENSE(x)
> > -#define dump_stack() assert(0)
> > -
> > -#include "../../../lib/xarray.c"
> > #undef XA_DEBUG
> > #include "../../../lib/test_xarray.c"
> >
> > diff --git a/tools/testing/shared/autoconf.h b/tools/testing/shared/autoconf.h
> > new file mode 100644
> > index 000000000000..92dc474c349b
> > --- /dev/null
> > +++ b/tools/testing/shared/autoconf.h
> > @@ -0,0 +1,2 @@
> > +#include "bit-length.h"
> > +#define CONFIG_XARRAY_MULTI 1
> > diff --git a/tools/testing/radix-tree/bitmap.c b/tools/testing/shared/bitmap.c
> > similarity index 100%
> > rename from tools/testing/radix-tree/bitmap.c
> > rename to tools/testing/shared/bitmap.c
> > diff --git a/tools/testing/radix-tree/linux.c b/tools/testing/shared/linux.c
> > similarity index 100%
> > rename from tools/testing/radix-tree/linux.c
> > rename to tools/testing/shared/linux.c
> > diff --git a/tools/testing/radix-tree/linux/bug.h b/tools/testing/shared/linux/bug.h
> > similarity index 100%
> > rename from tools/testing/radix-tree/linux/bug.h
> > rename to tools/testing/shared/linux/bug.h
> > diff --git a/tools/testing/radix-tree/linux/cpu.h b/tools/testing/shared/linux/cpu.h
> > similarity index 100%
> > rename from tools/testing/radix-tree/linux/cpu.h
> > rename to tools/testing/shared/linux/cpu.h
> > diff --git a/tools/testing/radix-tree/linux/idr.h b/tools/testing/shared/linux/idr.h
> > similarity index 100%
> > rename from tools/testing/radix-tree/linux/idr.h
> > rename to tools/testing/shared/linux/idr.h
> > diff --git a/tools/testing/radix-tree/linux/init.h b/tools/testing/shared/linux/init.h
> > similarity index 100%
> > rename from tools/testing/radix-tree/linux/init.h
> > rename to tools/testing/shared/linux/init.h
> > diff --git a/tools/testing/radix-tree/linux/kconfig.h b/tools/testing/shared/linux/kconfig.h
> > similarity index 100%
> > rename from tools/testing/radix-tree/linux/kconfig.h
> > rename to tools/testing/shared/linux/kconfig.h
> > diff --git a/tools/testing/radix-tree/linux/kernel.h b/tools/testing/shared/linux/kernel.h
> > similarity index 100%
> > rename from tools/testing/radix-tree/linux/kernel.h
> > rename to tools/testing/shared/linux/kernel.h
> > diff --git a/tools/testing/radix-tree/linux/kmemleak.h b/tools/testing/shared/linux/kmemleak.h
> > similarity index 100%
> > rename from tools/testing/radix-tree/linux/kmemleak.h
> > rename to tools/testing/shared/linux/kmemleak.h
> > diff --git a/tools/testing/radix-tree/linux/local_lock.h b/tools/testing/shared/linux/local_lock.h
> > similarity index 100%
> > rename from tools/testing/radix-tree/linux/local_lock.h
> > rename to tools/testing/shared/linux/local_lock.h
> > diff --git a/tools/testing/radix-tree/linux/lockdep.h b/tools/testing/shared/linux/lockdep.h
> > similarity index 100%
> > rename from tools/testing/radix-tree/linux/lockdep.h
> > rename to tools/testing/shared/linux/lockdep.h
> > diff --git a/tools/testing/radix-tree/linux/maple_tree.h b/tools/testing/shared/linux/maple_tree.h
> > similarity index 100%
> > rename from tools/testing/radix-tree/linux/maple_tree.h
> > rename to tools/testing/shared/linux/maple_tree.h
> > diff --git a/tools/testing/radix-tree/linux/percpu.h b/tools/testing/shared/linux/percpu.h
> > similarity index 100%
> > rename from tools/testing/radix-tree/linux/percpu.h
> > rename to tools/testing/shared/linux/percpu.h
> > diff --git a/tools/testing/radix-tree/linux/preempt.h b/tools/testing/shared/linux/preempt.h
> > similarity index 100%
> > rename from tools/testing/radix-tree/linux/preempt.h
> > rename to tools/testing/shared/linux/preempt.h
> > diff --git a/tools/testing/radix-tree/linux/radix-tree.h b/tools/testing/shared/linux/radix-tree.h
> > similarity index 100%
> > rename from tools/testing/radix-tree/linux/radix-tree.h
> > rename to tools/testing/shared/linux/radix-tree.h
> > diff --git a/tools/testing/radix-tree/linux/rcupdate.h b/tools/testing/shared/linux/rcupdate.h
> > similarity index 100%
> > rename from tools/testing/radix-tree/linux/rcupdate.h
> > rename to tools/testing/shared/linux/rcupdate.h
> > diff --git a/tools/testing/radix-tree/linux/xarray.h b/tools/testing/shared/linux/xarray.h
> > similarity index 100%
> > rename from tools/testing/radix-tree/linux/xarray.h
> > rename to tools/testing/shared/linux/xarray.h
> > diff --git a/tools/testing/shared/maple-shared.h b/tools/testing/shared/maple-shared.h
> > new file mode 100644
> > index 000000000000..3d847edd149d
> > --- /dev/null
> > +++ b/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"
> > diff --git a/tools/testing/shared/maple-shim.c b/tools/testing/shared/maple-shim.c
> > new file mode 100644
> > index 000000000000..640df76f483e
> > --- /dev/null
> > +++ b/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"
> > diff --git a/tools/testing/shared/shared.h b/tools/testing/shared/shared.h
> > new file mode 100644
> > index 000000000000..495602e60b65
> > --- /dev/null
> > +++ b/tools/testing/shared/shared.h
> > @@ -0,0 +1,34 @@
> > +/* 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/types.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
> > diff --git a/tools/testing/shared/shared.mk b/tools/testing/shared/shared.mk
> > new file mode 100644
> > index 000000000000..69a6a528eaed
> > --- /dev/null
> > +++ b/tools/testing/shared/shared.mk
> > @@ -0,0 +1,68 @@
> > +# 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
> > +SHARED_OFILES = xarray-shared.o radix-tree.o idr.o linux.o find_bit.o bitmap.o \
> > + slab.o
> > +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) $(CPPFLAGS) $< -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:
> > + cp ../shared/autoconf.h generated/autoconf.h
> > +
> > +generated/map-shift.h:
> > + @if ! grep -qws $(SHIFT) generated/map-shift.h; then \
> > + echo "Generating $@"; \
> > + echo "#define XA_CHUNK_SHIFT $(SHIFT)" > \
> > + generated/map-shift.h; \
> > + fi
> > +
> > +generated/bit-length.h: FORCE
> > + @if ! grep -qws CONFIG_$(LONG_BIT)BIT generated/bit-length.h; then \
> > + echo "Generating $@"; \
> > + echo "#define CONFIG_$(LONG_BIT)BIT 1" > $@; \
> > + fi
> > +
> > +FORCE: ;
> > diff --git a/tools/testing/shared/trace/events/maple_tree.h b/tools/testing/shared/trace/events/maple_tree.h
> > new file mode 100644
> > index 000000000000..97d0e1ddcf08
> > --- /dev/null
> > +++ b/tools/testing/shared/trace/events/maple_tree.h
> > @@ -0,0 +1,5 @@
> > +/* SPDX-License-Identifier: GPL-2.0+ */
> > +
> > +#define trace_ma_op(a, b) do {} while (0)
> > +#define trace_ma_read(a, b) do {} while (0)
> > +#define trace_ma_write(a, b, c, d) do {} while (0)
> > diff --git a/tools/testing/shared/xarray-shared.c b/tools/testing/shared/xarray-shared.c
> > new file mode 100644
> > index 000000000000..e90901958dcd
> > --- /dev/null
> > +++ b/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"
> > diff --git a/tools/testing/shared/xarray-shared.h b/tools/testing/shared/xarray-shared.h
> > new file mode 100644
> > index 000000000000..ac2d16ff53ae
> > --- /dev/null
> > +++ b/tools/testing/shared/xarray-shared.h
> > @@ -0,0 +1,4 @@
> > +/* SPDX-License-Identifier: GPL-2.0+ */
> > +
> > +#define XA_DEBUG
> > +#include "shared.h"
> > --
> > 2.45.1
> >
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