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| author | Uladzislau Rezki (Sony) <urezki@gmail.com> | 2022-10-25 16:46:12 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2023-01-03 17:48:40 -0800 |
| commit | 04a522b7da3dbc083f8ae0aa1a6184b959a8f81c (patch) | |
| tree | 492ecb846a88726dbc2221b93b6217ad8200ce5c /include/linux/rcutiny.h | |
| parent | 1b929c02afd37871d5afb9d498426f83432e71c2 (diff) | |
| download | lwn-04a522b7da3dbc083f8ae0aa1a6184b959a8f81c.tar.gz lwn-04a522b7da3dbc083f8ae0aa1a6184b959a8f81c.zip | |
rcu: Refactor kvfree_call_rcu() and high-level helpers
Currently a kvfree_call_rcu() takes an offset within a structure as
a second parameter, so a helper such as a kvfree_rcu_arg_2() has to
convert rcu_head and a freed ptr to an offset in order to pass it. That
leads to an extra conversion on macro entry.
Instead of converting, refactor the code in way that a pointer that has
to be freed is passed directly to the kvfree_call_rcu().
This patch does not make any functional change and is transparent to
all kvfree_rcu() users.
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'include/linux/rcutiny.h')
| -rw-r--r-- | include/linux/rcutiny.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h index 68f9070aa111..7f17acf29dda 100644 --- a/include/linux/rcutiny.h +++ b/include/linux/rcutiny.h @@ -98,25 +98,25 @@ static inline void synchronize_rcu_expedited(void) */ extern void kvfree(const void *addr); -static inline void __kvfree_call_rcu(struct rcu_head *head, rcu_callback_t func) +static inline void __kvfree_call_rcu(struct rcu_head *head, void *ptr) { if (head) { - call_rcu(head, func); + call_rcu(head, (rcu_callback_t) ((void *) head - ptr)); return; } // kvfree_rcu(one_arg) call. might_sleep(); synchronize_rcu(); - kvfree((void *) func); + kvfree(ptr); } #ifdef CONFIG_KASAN_GENERIC -void kvfree_call_rcu(struct rcu_head *head, rcu_callback_t func); +void kvfree_call_rcu(struct rcu_head *head, void *ptr); #else -static inline void kvfree_call_rcu(struct rcu_head *head, rcu_callback_t func) +static inline void kvfree_call_rcu(struct rcu_head *head, void *ptr) { - __kvfree_call_rcu(head, func); + __kvfree_call_rcu(head, ptr); } #endif |