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radix tree test suite: allow testing other fan-out values

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The defines in regression2.c are already in radix-tree.h and duplicating
them in the test case makes experimenting with other values for the
fan-out harder than necessary.  Allow the user of the radix tree to
decide what the fan-out should be rather than fixing it to 8 for
non-kernel uses.

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Kirill Shutemov <kirill.shutemov@linux.intel.com>
Cc: Jan Kara <jack@suse.com>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ross Zwisler 2016-05-20 17:01:42 -07:00 committed by Linus Torvalds
parent d42cb1a9ff
commit 97d778b2de
3 changed files with 3 additions and 10 deletions
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4
include/linux/radix-tree.h
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@ -70,10 +70,8 @@ static inline int radix_tree_is_indirect_ptr(void *ptr)
#define RADIX_TREE_MAX_TAGS 3
#ifdef __KERNEL__
#ifndef RADIX_TREE_MAP_SHIFT
#define RADIX_TREE_MAP_SHIFT (CONFIG_BASE_SMALL ? 4 : 6)
#else
#define RADIX_TREE_MAP_SHIFT 3 /* For more stressful testing */
#endif
#define RADIX_TREE_MAP_SIZE (1UL << RADIX_TREE_MAP_SHIFT)

2
tools/testing/radix-tree/linux/kernel.h
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@ -12,6 +12,8 @@
#define CONFIG_SHMEM
#define CONFIG_SWAP
#define RADIX_TREE_MAP_SHIFT 3
#ifndef NULL
#define NULL 0
#endif

7
tools/testing/radix-tree/regression2.c
View File

@ -51,13 +51,6 @@
#include "regression.h"
#ifdef __KERNEL__
#define RADIX_TREE_MAP_SHIFT (CONFIG_BASE_SMALL ? 4 : 6)
#else
#define RADIX_TREE_MAP_SHIFT 3 /* For more stressful testing */
#endif
#define RADIX_TREE_MAP_SIZE (1UL << RADIX_TREE_MAP_SHIFT)
#define PAGECACHE_TAG_DIRTY 0
#define PAGECACHE_TAG_WRITEBACK 1
#define PAGECACHE_TAG_TOWRITE 2