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[v2,0/3] mm/slub: some minor optimization and cleanup

Message ID 20240117-slab-misc-v2-0-81766907896e@bytedance.com (mailing list archive)
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Series mm/slub: some minor optimization and cleanup | expand

Message

Chengming Zhou Jan. 23, 2024, 9:33 a.m. UTC 
Changes in v2:
- Add VM_BUG_ON(!freelist) after get_freelist() for cpu partial slab case,
  since it's not possible to happen for this case.
- Collect tags.
- Link to v1: https://lore.kernel.org/r/20240117-slab-misc-v1-0-fd1c49ccbe70@bytedance.com

Hi,

This series include a minor optimization of cpu partial slab fastpath,
which directly load freelist from cpu partial slab in the likely case.

It has small performance improvement in testing:
perf bench sched messaging -g 5 -t -l 100000

            mm-stable   slub-optimize
Total time      7.473    7.209

The other two patches are cleanups, which are included for convenience.

Thanks for review and comment!

Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
---
Chengming Zhou (3):
      mm/slub: directly load freelist from cpu partial slab in the likely case
      mm/slub: remove full list manipulation for non-debug slab
      mm/slub: remove unused parameter in next_freelist_entry()

 mm/slub.c | 32 ++++++++++++++------------------
 1 file changed, 14 insertions(+), 18 deletions(-)
---
base-commit: ab27740f76654ed58dd32ac0ba0031c18a6dea3b
change-id: 20240117-slab-misc-5a5f37a51257

Best regards,