diff options
| author | Vlastimil Babka <vbabka@suse.cz> | 2026-02-08 19:17:42 +0100 |
|---|---|---|
| committer | Vlastimil Babka <vbabka@suse.cz> | 2026-02-10 09:10:00 +0100 |
| commit | 815c8e35511d0b9a214e9f644983fe477af9d5cb (patch) | |
| tree | cbbb5c37b065a9595a207eca145ceb257ea5fdc6 /include | |
| parent | 98e99fc4ad4b30dd28c09ba19686ec583af345b4 (diff) | |
| parent | 40fd0acc45d06709b3b1eea77e50e13f4145dff0 (diff) | |
Merge branch 'slab/for-7.0/sheaves' into slab/for-next
Merge series "slab: replace cpu (partial) slabs with sheaves".
The percpu sheaves caching layer was introduced as opt-in but the goal
was to eventually move all caches to them. This is the next step,
enabling sheaves for all caches (except the two bootstrap ones) and then
removing the per cpu (partial) slabs and lots of associated code.
Besides the lower locking overhead and much more likely fastpath when
freeing, this removes the rather complicated code related to the cpu
slab lockless fastpaths (using this_cpu_try_cmpxchg128/64) and all its
complications for PREEMPT_RT or kmalloc_nolock().
The lockless slab freelist+counters update operation using
try_cmpxchg128/64 remains and is crucial for freeing remote NUMA objects
and to allow flushing objects from sheaves to slabs mostly without the
node list_lock.
Link: https://lore.kernel.org/all/20260123-sheaves-for-all-v4-0-041323d506f7@suse.cz/
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/slab.h | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/include/linux/slab.h b/include/linux/slab.h index 34db237319c1..a0081642606b 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -57,9 +57,7 @@ enum _slab_flag_bits { #endif _SLAB_OBJECT_POISON, _SLAB_CMPXCHG_DOUBLE, -#ifdef CONFIG_SLAB_OBJ_EXT _SLAB_NO_OBJ_EXT, -#endif #if defined(CONFIG_SLAB_OBJ_EXT) && defined(CONFIG_64BIT) _SLAB_OBJ_EXT_IN_OBJ, #endif @@ -241,11 +239,7 @@ enum _slab_flag_bits { #define SLAB_TEMPORARY SLAB_RECLAIM_ACCOUNT /* Objects are short-lived */ /* Slab created using create_boot_cache */ -#ifdef CONFIG_SLAB_OBJ_EXT #define SLAB_NO_OBJ_EXT __SLAB_FLAG_BIT(_SLAB_NO_OBJ_EXT) -#else -#define SLAB_NO_OBJ_EXT __SLAB_FLAG_UNUSED -#endif #if defined(CONFIG_SLAB_OBJ_EXT) && defined(CONFIG_64BIT) #define SLAB_OBJ_EXT_IN_OBJ __SLAB_FLAG_BIT(_SLAB_OBJ_EXT_IN_OBJ) |