mirror of
https://github.com/torvalds/linux.git
synced 2026-04-18 23:03:57 -04:00
f615cc9264
Now we have the capability to test the new helpers for the bitmap VMA flags in userland, do so. We also update the Makefile such that both VMA (and while we're here) mm_struct flag sizes can be customised on build. We default to 128-bit to enable testing of flags above word size even on 64-bit systems. We add userland tests to ensure that we do not regress VMA flag behaviour with the introduction when using bitmap VMA flags, nor accidentally introduce unexpected results due to for instance higher bit values not being correctly cleared/set. As part of this change, make __mk_vma_flags() a custom function so we can handle specifying invalid VMA bits. This is purposeful so we can have the VMA tests work at lower and higher number of VMA flags without having to duplicate code too much. Link: https://lkml.kernel.org/r/7fe6afe9c8c61e4d3cfc9a2d50a5d24da8528e68.1769097829.git.lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zi Yan <ziy@nvidia.com> Cc: Damien Le Moal <dlemoal@kernel.org> Cc: "Darrick J. Wong" <djwong@kernel.org> Cc: Jarkko Sakkinen <jarkko@kernel.org> Cc: Yury Norov <ynorov@nvidia.com> Cc: Chris Mason <clm@fb.com> Cc: Pedro Falcato <pfalcato@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* vma_internal.h
|
|
*
|
|
* Header providing userland wrappers and shims for the functionality provided
|
|
* by mm/vma_internal.h.
|
|
*
|
|
* We make the header guard the same as mm/vma_internal.h, so if this shim
|
|
* header is included, it precludes the inclusion of the kernel one.
|
|
*/
|
|
|
|
#ifndef __MM_VMA_INTERNAL_H
|
|
#define __MM_VMA_INTERNAL_H
|
|
|
|
#include <stdlib.h>
|
|
|
|
#define CONFIG_MMU
|
|
#define CONFIG_PER_VMA_LOCK
|
|
|
|
#ifdef __CONCAT
|
|
#undef __CONCAT
|
|
#endif
|
|
|
|
#include <linux/args.h>
|
|
#include <linux/atomic.h>
|
|
#include <linux/bitmap.h>
|
|
#include <linux/list.h>
|
|
#include <linux/maple_tree.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/rbtree.h>
|
|
#include <linux/refcount.h>
|
|
#include <linux/slab.h>
|
|
|
|
/*
|
|
* DUPLICATE typedef definitions from kernel source that have to be declared
|
|
* ahead of all other headers.
|
|
*/
|
|
#define __private
|
|
/* NUM_MM_FLAG_BITS defined by test code. */
|
|
typedef struct {
|
|
__private DECLARE_BITMAP(__mm_flags, NUM_MM_FLAG_BITS);
|
|
} mm_flags_t;
|
|
/* NUM_VMA_FLAG_BITS defined by test code. */
|
|
typedef struct {
|
|
DECLARE_BITMAP(__vma_flags, NUM_VMA_FLAG_BITS);
|
|
} __private vma_flags_t;
|
|
|
|
typedef unsigned long vm_flags_t;
|
|
#define pgoff_t unsigned long
|
|
typedef unsigned long pgprotval_t;
|
|
typedef struct pgprot { pgprotval_t pgprot; } pgprot_t;
|
|
typedef __bitwise unsigned int vm_fault_t;
|
|
|
|
#include "include/stubs.h"
|
|
#include "include/dup.h"
|
|
#include "include/custom.h"
|
|
|
|
#endif /* __MM_VMA_INTERNAL_H */
|