Commit 968c76cb authored by Yonghong Song's avatar Yonghong Song Committed by Alexei Starovoitov
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selftests/bpf: Add bpf_percpu_obj_{new,drop}() macro in bpf_experimental.h 



The new macro bpf_percpu_obj_{new/drop}() is very similar to bpf_obj_{new,drop}()
as they both take a type as the argument.

Signed-off-by: default avatarYonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20230827152805.1999417-1-yonghong.song@linux.dev


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent ed5285a1

tools/testing/selftests/bpf/bpf_experimental.h

+31 −0
Original line number Diff line number Diff line
@@ -131,4 +131,35 @@ extern int bpf_rbtree_add_impl(struct bpf_rb_root *root, struct bpf_rb_node *nod 
 */

extern struct bpf_rb_node *bpf_rbtree_first(struct bpf_rb_root *root) __ksym;



/* Description

 *	Allocates a percpu object of the type represented by 'local_type_id' in

 *	program BTF. User may use the bpf_core_type_id_local macro to pass the

 *	type ID of a struct in program BTF.

 *

 *	The 'local_type_id' parameter must be a known constant.

 *	The 'meta' parameter is rewritten by the verifier, no need for BPF

 *	program to set it.

 * Returns

 *	A pointer to a percpu object of the type corresponding to the passed in

 *	'local_type_id', or NULL on failure.

 */

extern void *bpf_percpu_obj_new_impl(__u64 local_type_id, void *meta) __ksym;



/* Convenience macro to wrap over bpf_percpu_obj_new_impl */

#define bpf_percpu_obj_new(type) ((type __percpu_kptr *)bpf_percpu_obj_new_impl(bpf_core_type_id_local(type), NULL))



/* Description

 *	Free an allocated percpu object. All fields of the object that require

 *	destruction will be destructed before the storage is freed.

 *

 *	The 'meta' parameter is rewritten by the verifier, no need for BPF

 *	program to set it.

 * Returns

 *	Void.

 */

extern void bpf_percpu_obj_drop_impl(void *kptr, void *meta) __ksym;



/* Convenience macro to wrap over bpf_obj_drop_impl */

#define bpf_percpu_obj_drop(kptr) bpf_percpu_obj_drop_impl(kptr, NULL)



#endif