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mm/slub, kunit: Make slub_kunit unaffected by user specified flags

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slub_kunit does not expect other debugging flags to be set when running
tests. When SLAB_RED_ZONE flag is set globally, test fails because the
flag affects number of errors reported.

To make slub_kunit unaffected by user specified debugging flags,
introduce SLAB_NO_USER_FLAGS to ignore them. With this flag, only flags
specified in the code are used and others are ignored.

Suggested-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Link: https://lore.kernel.org/r/Yk0sY9yoJhFEXWOg@hyeyoo
This commit is contained in:
Hyeonggon Yoo
2022-04-06 15:00:03 +09:00
committed by Vlastimil Babka
parent 1e703d0548
commit a285909f47
4 changed files with 18 additions and 7 deletions
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7
include/linux/slab.h
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@@ -112,6 +112,13 @@
#define SLAB_KASAN 0
#endif
/*
* Ignore user specified debugging flags.
* Intended for caches created for self-tests so they have only flags
* specified in the code and other flags are ignored.
*/
#define SLAB_NO_USER_FLAGS ((slab_flags_t __force)0x10000000U)
/* The following flags affect the page allocator grouping pages by mobility */
/* Objects are reclaimable */
#define SLAB_RECLAIM_ACCOUNT ((slab_flags_t __force)0x00020000U)