linux-kernel - [PATCH 0/5] Minor memory size optimization in debugobjects

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Message-ID: <20240821230539.168107-1-woodyzhang666@gmail.com>
Date: Thu, 22 Aug 2024 07:05:34 +0800
From: Woody Zhang <woodyzhang666@...il.com>
To: Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org,
	Woody Zhang <woodyzhang666@...il.com>
Subject: [PATCH 0/5] Minor memory size optimization in debugobjects

As of now, debugobjects framework uses hlist_head and separate spinlock
as a hash table bucket. We have hlist_bl_head APIs which embeds a
bit_spinlock in head pointer and thus no separate spinlock is required.

This patchset first wraps irq variant API for bit_spinlock as well as
hlist_bl_lock and several other APIs and macros. Lastly, It replaces
hlist APIs with hlist_bl counterparts.

Woody Zhang (5):
  bit_spinlock: add irq variant for bit spinlock API
  list_bl: add irq variant for hlist_bl lock API
  list_bl: remove lock check in hlist_bl_set_first
  list_bl: add hlist_bl_move_list and two macros
  debugobjects: use list_bl to save memory for hash slot spinlocks

 include/linux/bit_spinlock.h |  37 +++++
 include/linux/debugobjects.h |   4 +-
 include/linux/list_bl.h      |  40 ++++-
 lib/debugobjects.c           | 288 +++++++++++++++++------------------
 4 files changed, 217 insertions(+), 152 deletions(-)

-- 
2.45.2