linux-kernel - [PATCH v2 0/3] SLUB: improve filling cpu partial a bit in get_partial

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Date: Thu, 4 Apr 2024 13:58:23 +0800
From: <xiongwei.song@...driver.com>
To: <vbabka@...e.cz>, <rientjes@...gle.com>, <cl@...ux.com>,
        <penberg@...nel.org>, <iamjoonsoo.kim@....com>,
        <akpm@...ux-foundation.org>, <roman.gushchin@...ux.dev>,
        <42.hyeyoo@...il.com>
CC: <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <chengming.zhou@...ux.dev>
Subject: [PATCH v2 0/3] SLUB: improve filling cpu partial a bit in get_partial_node()

From: Xiongwei Song <xiongwei.song@...driver.com>

This series is to remove the unnecessary check for filling cpu partial
and improve the readability.

Introduce slub_get_cpu_partial() and dummy function to remove #ifdef of
CONFIG_SLUB_CPU_PARTIAL. Please check patch 2 and patch 3.

Also add the comparison in patch 3 for when breaking from filling cpu
partial loop with ">" or ">=". For more details, please check the
patch 3 inside.

No functionality changed.

Changes in v2:
 - Refine the commit message(from Vlastimil Babka's comments).
 - Refine the check conditions of filling cpu partial(as Vlastimil Babka
   suggested).
 - drop patch 4 of v1.

v1:
 - https://lore.kernel.org/lkml/20240331021926.2732572-4-xiongwei.song@windriver.com/T/

Before v1:
 - Actually, the series is the improvement of patch below:
   https://lore.kernel.org/lkml/934f65c6-4d97-6c4d-b123-4937ede24a99@google.com/T/

Regards,
Xiongwei

Xiongwei Song (3):
  mm/slub: remove the check of !kmem_cache_has_cpu_partial()
  mm/slub: add slub_get_cpu_partial() helper
  mm/slub: simplify get_partial_node()

 mm/slub.c | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

-- 
2.34.1