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From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Zhen Lei <thunder.leizhen@huawei.com>, Waiman Long <longman@redhat.com>
Subject: [patch 01/25] debugobjects: Delete a piece of redundant code
Date: Mon,  7 Oct 2024 18:49:52 +0200 (CEST)	[thread overview]
Message-ID: <20241007164913.009849239@linutronix.de> (raw)
In-Reply-To: <20241007163507.647617031@linutronix.de>

From: Zhen Lei <thunder.leizhen@huawei.com>

The statically allocated objects are all located in obj_static_pool[],
the whole memory of obj_static_pool[] will be reclaimed later. Therefore,
there is no need to split the remaining statically nodes in list obj_pool
into isolated ones, no one will use them anymore. Just write
INIT_HLIST_HEAD(&obj_pool) is enough. Since hlist_move_list() directly
discards the old list, even this can be omitted.

Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20240911083521.2257-2-thunder.leizhen@huawei.com

---
 lib/debugobjects.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -1325,10 +1325,10 @@ static int __init debug_objects_replace_
 	 * active object references.
 	 */
 
-	/* Remove the statically allocated objects from the pool */
-	hlist_for_each_entry_safe(obj, tmp, &obj_pool, node)
-		hlist_del(&obj->node);
-	/* Move the allocated objects to the pool */
+	/*
+	 * Replace the statically allocated objects list with the allocated
+	 * objects list.
+	 */
 	hlist_move_list(&objects, &obj_pool);
 
 	/* Replace the active object references */


  reply	other threads:[~2024-10-07 16:49 UTC|newest]

Thread overview: 81+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-10-07 16:49 [patch 00/25] debugobjects: Rework object handling Thomas Gleixner
2024-10-07 16:49 ` Thomas Gleixner [this message]
2024-10-07 16:49 ` [patch 02/25] debugobjects: Collect newly allocated objects in a list to reduce lock contention Thomas Gleixner
2024-10-07 16:49 ` [patch 03/25] debugobjects: Dont destroy kmem cache in init() Thomas Gleixner
2024-10-10  2:14   ` Leizhen (ThunderTown)
2024-10-10 11:46     ` Thomas Gleixner
2024-10-10 13:31       ` Leizhen (ThunderTown)
2024-10-11 20:37         ` Thomas Gleixner
2024-10-12  1:50           ` Leizhen (ThunderTown)
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:49 ` [patch 04/25] debugobjects: Remove pointless hlist initialization Thomas Gleixner
2024-10-10  2:19   ` Leizhen (ThunderTown)
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:49 ` [patch 05/25] debugobjects: Dont free objects directly on CPU hotplug Thomas Gleixner
2024-10-10  2:33   ` Leizhen (ThunderTown)
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:49 ` [patch 06/25] debugobjects: Reuse put_objects() on OOM Thomas Gleixner
2024-10-10  2:38   ` Leizhen (ThunderTown)
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:49 ` [patch 07/25] debugobjects: Remove pointless debug printk Thomas Gleixner
2024-10-10  2:44   ` Leizhen (ThunderTown)
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:50 ` [patch 08/25] debugobjects: Provide and use free_object_list() Thomas Gleixner
2024-10-10  2:54   ` Leizhen (ThunderTown)
2024-10-11 20:40     ` Thomas Gleixner
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:50 ` [patch 09/25] debugobjects: Make debug_objects_enabled bool Thomas Gleixner
2024-10-10  3:00   ` Leizhen (ThunderTown)
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:50 ` [patch 10/25] debugobjects: Reduce parallel pool fill attempts Thomas Gleixner
2024-10-07 16:50 ` [patch 11/25] debugobjects: Move pools into a datastructure Thomas Gleixner
2024-10-10  3:47   ` Leizhen (ThunderTown)
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:50 ` [patch 12/25] debugobjects: Use separate list head for boot pool Thomas Gleixner
2024-10-10  4:04   ` Leizhen (ThunderTown)
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:50 ` [patch 13/25] debugobjects: Rename and tidy up per CPU pools Thomas Gleixner
2024-10-10  6:23   ` Leizhen (ThunderTown)
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:50 ` [patch 14/25] debugobjects: Move min/max count into pool struct Thomas Gleixner
2024-10-10  6:26   ` Leizhen (ThunderTown)
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:50 ` [patch 15/25] debugobjects: Rework object allocation Thomas Gleixner
2024-10-10  6:39   ` Leizhen (ThunderTown)
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:50 ` [patch 16/25] debugobjects: Rework object freeing Thomas Gleixner
2024-10-10  7:39   ` Leizhen (ThunderTown)
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:50 ` [patch 17/25] debugobjects: Rework free_object_work() Thomas Gleixner
2024-10-10  8:10   ` Leizhen (ThunderTown)
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:50 ` [patch 18/25] debugobjects: Use static key for boot pool selection Thomas Gleixner
2024-10-10  8:12   ` Leizhen (ThunderTown)
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:50 ` [patch 19/25] debugobjects: Prepare for batching Thomas Gleixner
2024-10-10  8:15   ` Leizhen (ThunderTown)
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:50 ` [patch 20/25] debugobjects: Prepare kmem_cache allocations " Thomas Gleixner
2024-10-10  8:40   ` Leizhen (ThunderTown)
2024-10-11 20:47     ` Thomas Gleixner
2024-10-12  2:02       ` Leizhen (ThunderTown)
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:50 ` [patch 21/25] debugobjects: Implement batch processing Thomas Gleixner
2024-10-10  9:39   ` Leizhen (ThunderTown)
2024-10-11 20:48     ` Thomas Gleixner
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:50 ` [patch 22/25] debugobjects: Move pool statistics into global_pool struct Thomas Gleixner
2024-10-10  9:50   ` Leizhen (ThunderTown)
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:50 ` [patch 23/25] debugobjects: Double the per CPU slots Thomas Gleixner
2024-10-10  9:51   ` Leizhen (ThunderTown)
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:50 ` [patch 24/25] debugobjects: Refill per CPU pool more agressively Thomas Gleixner
2024-10-10 10:02   ` Leizhen (ThunderTown)
2024-10-11 20:49     ` Thomas Gleixner
2024-10-15 15:36   ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner
2024-10-07 16:50 ` [patch 25/25] debugobjects: Track object usage to avoid premature freeing of objects Thomas Gleixner
2024-10-10 13:13   ` Leizhen (ThunderTown)
2024-10-13 18:45     ` Thomas Gleixner
2024-10-14  1:46       ` Leizhen (ThunderTown)
2024-10-15 15:36       ` [tip: core/debugobjects] " tip-bot2 for Thomas Gleixner

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