diff options
Diffstat (limited to 'include/linux/slab.h')
| -rw-r--r-- | include/linux/slab.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/slab.h b/include/linux/slab.h index c6bc05765bdb..360005c6cbfb 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -108,6 +108,18 @@ /* Avoid kmemleak tracing */ #define SLAB_NOLEAKTRACE ((slab_flags_t __force)0x00800000U) +/* + * Prevent merging with compatible kmem caches. This flag should be used + * cautiously. Valid use cases: + * + * - caches created for self-tests (e.g. kunit) + * - general caches created and used by a subsystem, only when a + * (subsystem-specific) debug option is enabled + * - performance critical caches, should be very rare and consulted with slab + * maintainers, and not used together with CONFIG_SLUB_TINY + */ +#define SLAB_NO_MERGE ((slab_flags_t __force)0x01000000U) + /* Fault injection mark */ #ifdef CONFIG_FAILSLAB # define SLAB_FAILSLAB ((slab_flags_t __force)0x02000000U) |