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slab, rcu: move TINY_RCU variant of kvfree_rcu() to SLAB

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Following the move of TREE_RCU implementation, let's move also the
TINY_RCU one for consistency and subsequent refactoring.

For simplicity, remove the separate inline __kvfree_call_rcu() as
TINY_RCU is not meant for high-performance hardware anyway.

Declare kvfree_call_rcu() in rcupdate.h to avoid header dependency
issues.

Also move the kvfree_rcu_barrier() declaration to slab.h

Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
This commit is contained in:
Vlastimil Babka
2025-02-03 10:28:47 +01:00
parent 2014c95afe
commit b14ff274e8
6 changed files with 38 additions and 50 deletions
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11
kernel/rcu/tiny.c
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@@ -246,17 +246,6 @@ bool poll_state_synchronize_rcu(unsigned long oldstate)
}
EXPORT_SYMBOL_GPL(poll_state_synchronize_rcu);
#ifdef CONFIG_KASAN_GENERIC
void kvfree_call_rcu(struct rcu_head *head, void *ptr)
{
if (head)
kasan_record_aux_stack(ptr);
__kvfree_call_rcu(head, ptr);
}
EXPORT_SYMBOL_GPL(kvfree_call_rcu);
#endif
void __init rcu_init(void)
{
open_softirq(RCU_SOFTIRQ, rcu_process_callbacks);