linux-kernel - [PATCH 1/2] cgroup/cpuset: Remove cpuset_do_slab_mem

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Date: Thu, 29 Feb 2024 22:20:06 +0800
From: Xiongwei Song <xiongwei.song@...driver.com>
To: <longman@...hat.com>, <lizefan.x@...edance.com>, <tj@...nel.org>,
        <hannes@...xchg.org>, <corbet@....net>
CC: <vbabka@...e.cz>, <yosryahmed@...gle.com>, <rostedt@...dmis.org>,
        <cl@...ux.com>, <chengming.zhou@...ux.dev>, <zhengyejian1@...wei.com>,
        <cgroups@...r.kernel.org>, <linux-mmc@...r.kernel.org>,
        <linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/2] cgroup/cpuset: Remove cpuset_do_slab_mem_spread()

The SLAB allocator has been removed sine 6.8-rc1 [1], so there is no user
with SLAB_MEM_SPREAD and cpuset_do_slab_mem_spread(). Then SLAB_MEM_SPREAD
is marked as unused by [2]. Here we can remove
cpuset_do_slab_mem_spread(). For more details, please check [3].

[1] https://lore.kernel.org/linux-mm/20231120-slab-remove-slab-v2-0-9c9c70177183@suse.cz/
[2] https://lore.kernel.org/linux-kernel/20240223-slab-cleanup-flags-v2-0-02f1753e8303@suse.cz/T/
[3] https://lore.kernel.org/lkml/32bc1403-49da-445a-8c00-9686a3b0d6a3@redhat.com/T/#mf14b838c5e0e77f4756d436bac3d8c0447ea4350

Signed-off-by: Xiongwei Song <xiongwei.song@...driver.com>
---
 include/linux/cpuset.h | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h
index 875d12598bd2..0ce6ff0d9c9a 100644
--- a/include/linux/cpuset.h
+++ b/include/linux/cpuset.h
@@ -121,11 +121,6 @@ static inline int cpuset_do_page_mem_spread(void)
 	return task_spread_page(current);
 }
 
-static inline int cpuset_do_slab_mem_spread(void)
-{
-	return task_spread_slab(current);
-}
-
 extern bool current_cpuset_is_being_rebound(void);
 
 extern void rebuild_sched_domains(void);
@@ -264,11 +259,6 @@ static inline int cpuset_do_page_mem_spread(void)
 	return 0;
 }
 
-static inline int cpuset_do_slab_mem_spread(void)
-{
-	return 0;
-}
-
 static inline bool current_cpuset_is_being_rebound(void)
 {
 	return false;
-- 
2.43.0