tools-add-skeleton-code-for-userland-testing-of-vma-logic.patch removed from -mm tree

The quilt patch titled
Subject: tools: add skeleton code for userland testing of VMA logic
has been removed from the -mm tree. Its filename was
tools-add-skeleton-code-for-userland-testing-of-vma-logic.patch

This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Lorenzo Stoakes <[email protected]>
Subject: tools: add skeleton code for userland testing of VMA logic
Date: Mon, 29 Jul 2024 12:50:41 +0100

Establish a new userland VMA unit testing implementation under tools/testing which utilises existing logic providing maple tree support in userland utilising the now-shared code previously exclusive to radix tree testing.

This provides fundamental VMA operations whose API is defined in mm/vma.h, while stubbing out superfluous functionality.

This exists as a proof-of-concept, with the test implementation functional and sufficient to allow userland compilation of vma.c, but containing only cursory tests to demonstrate basic functionality.

---

 MAINTAINERS                      |    1 
 tools/testing/vma/.gitignore     |    7 
 tools/testing/vma/Makefile       |   16 
 tools/testing/vma/linux/atomic.h |   12 
 tools/testing/vma/linux/mmzone.h |   38 +
 tools/testing/vma/vma.c          |  207 ++++++
 tools/testing/vma/vma_internal.h |  882 +++++++++++++++++++++++++++++
 7 files changed, 1163 insertions(+)

@@ -24423,6 +24423,7 @@ T:	git git://git.kernel.org/pub/scm/linu
 F:	mm/vma.c
 F:	mm/vma.h
 F:	mm/vma_internal.h
+F:	tools/testing/vma/
 
 VMALLOC
 M:	Andrew Morton <[email protected]>

new file mode 100664
@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
+generated/bit-length.h
+generated/map-shift.h
+generated/autoconf.h
+idr.c
+radix-tree.c
+vma

new file mode 100664
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef _LINUX_ATOMIC_H
+#define _LINUX_ATOMIC_H
+
+#define atomic_t int32_t
+#define atomic_inc(x) uatomic_inc(x)
+#define atomic_read(x) uatomic_read(x)
+#define atomic_set(x, y) do {} while (0)
+#define U8_MAX UCHAR_MAX
+
+#endif	/* _LINUX_ATOMIC_H */

new file mode 100664
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef _LINUX_MMZONE_H
+#define _LINUX_MMZONE_H
+
+#include <linux/atomic.h>
+
+struct pglist_data *first_online_pgdat(void);
+struct pglist_data *next_online_pgdat(struct pglist_data *pgdat);
+
+#define for_each_online_pgdat(pgdat)			\
+	for (pgdat = first_online_pgdat();		\
+	     pgdat;					\
+	     pgdat = next_online_pgdat(pgdat))
+
+enum zone_type {
+	__MAX_NR_ZONES
+};
+
+#define MAX_NR_ZONES __MAX_NR_ZONES
+#define MAX_PAGE_ORDER 10
+#define MAX_ORDER_NR_PAGES (1 << MAX_PAGE_ORDER)
+
+#define pageblock_order		MAX_PAGE_ORDER
+#define pageblock_nr_pages	BIT(pageblock_order)
+#define pageblock_align(pfn)	ALIGN((pfn), pageblock_nr_pages)
+#define pageblock_start_pfn(pfn)	ALIGN_DOWN((pfn), pageblock_nr_pages)
+
+struct zone {
+	atomic_long_t		managed_pages;
+};
+
+typedef struct pglist_data {
+	struct zone node_zones[MAX_NR_ZONES];
+
+} pg_data_t;
+
+#endif /* _LINUX_MMZONE_H */

new file mode 100664
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+.PHONY: default
+
+default: vma
+
+include ../shared/shared.mk
+
+OFILES = $(SHARED_OFILES) vma.o maple-shim.o
+TARGETS = vma
+
+vma:	$(OFILES) vma_internal.h ../../../mm/vma.c ../../../mm/vma.h
+	$(CC) $(CFLAGS) -o $@ $(OFILES) $(LDLIBS)
+
+clean:
+	$(RM) $(TARGETS) *.o radix-tree.c idr.c generated/map-shift.h generated/bit-length.h generated/autoconf.h

_

Patches currently in -mm which might be from [email protected] are

tools-improve-vma-test-makefile.patch tools-add-vma-merge-tests.patch mm-introduce-vma_merge_struct-and-abstract-vma_mergevma_modify.patch mm-remove-duplicated-open-coded-vma-policy-check.patch mm-abstract-vma_expand-to-use-vma_merge_struct.patch mm-avoid-using-vma_merge-for-new-vmas.patch mm-make-vma_prepare-and-friends-static-and-internal-to-vmac.patch mm-introduce-commit_merge-abstracting-final-commit-of-merge.patch mm-refactor-vma_merge-into-modify-only-vma_merge_existing_range.patch mm-rework-vm_ops-close-handling-on-vma-merge.patch