diff options
| author | Vlastimil Babka <vbabka@suse.cz> | 2025-02-03 10:28:47 +0100 |
|---|---|---|
| committer | Vlastimil Babka <vbabka@suse.cz> | 2025-02-05 10:45:12 +0100 |
| commit | b14ff274e8aa5517ff86c94d682bf26bf8b5dcc8 (patch) | |
| tree | ebe7e7708fb4bc3ad7484eade19ee78b44f7f0ce /mm/slab_common.c | |
| parent | 2014c95afecee3e76ca4a56956a936e23283f05b (diff) | |
slab, rcu: move TINY_RCU variant of kvfree_rcu() to SLAB
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>
Diffstat (limited to 'mm/slab_common.c')
| -rw-r--r-- | mm/slab_common.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/mm/slab_common.c b/mm/slab_common.c index 4030907b6b7d..81a0ce77b11c 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -1284,6 +1284,25 @@ EXPORT_TRACEPOINT_SYMBOL(kmem_cache_alloc); EXPORT_TRACEPOINT_SYMBOL(kfree); EXPORT_TRACEPOINT_SYMBOL(kmem_cache_free); +#ifdef CONFIG_TINY_RCU + +void kvfree_call_rcu(struct rcu_head *head, void *ptr) +{ + if (head) { + kasan_record_aux_stack(ptr); + call_rcu(head, (rcu_callback_t) ((void *) head - ptr)); + return; + } + + // kvfree_rcu(one_arg) call. + might_sleep(); + synchronize_rcu(); + kvfree(ptr); +} +EXPORT_SYMBOL_GPL(kvfree_call_rcu); + +#endif + /* * This rcu parameter is runtime-read-only. It reflects * a minimum allowed number of objects which can be cached |