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9325b8b5a1
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. Link: https://lkml.kernel.org/r/533ffa2eec771cbe6b387dd049a7f128a53eb616.1722251717.git.lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Tested-by: SeongJae Park <sj@kernel.org> 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: 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>
39 lines
910 B
C
39 lines
910 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef _LINUX_MMZONE_H
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#define _LINUX_MMZONE_H
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#include <linux/atomic.h>
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struct pglist_data *first_online_pgdat(void);
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struct pglist_data *next_online_pgdat(struct pglist_data *pgdat);
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#define for_each_online_pgdat(pgdat) \
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for (pgdat = first_online_pgdat(); \
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pgdat; \
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pgdat = next_online_pgdat(pgdat))
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enum zone_type {
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__MAX_NR_ZONES
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};
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#define MAX_NR_ZONES __MAX_NR_ZONES
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#define MAX_PAGE_ORDER 10
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#define MAX_ORDER_NR_PAGES (1 << MAX_PAGE_ORDER)
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#define pageblock_order MAX_PAGE_ORDER
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#define pageblock_nr_pages BIT(pageblock_order)
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#define pageblock_align(pfn) ALIGN((pfn), pageblock_nr_pages)
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#define pageblock_start_pfn(pfn) ALIGN_DOWN((pfn), pageblock_nr_pages)
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struct zone {
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atomic_long_t managed_pages;
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};
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typedef struct pglist_data {
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struct zone node_zones[MAX_NR_ZONES];
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} pg_data_t;
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#endif /* _LINUX_MMZONE_H */
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