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| author | Yonghong Song <yonghong.song@linux.dev> | 2023-08-27 08:28:05 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-11-08 16:28:18 +0100 |
| commit | bef1f6beae90fd426e72d2b3ca23435c8b73db3f (patch) | |
| tree | 75248b6358041e5ddcc31c90f5011b58dd250edd | |
| parent | 597cf9748c3477bf61bc35f0634129f56764ad24 (diff) | |
| download | linux-bef1f6beae90fd426e72d2b3ca23435c8b73db3f.tar.gz linux-bef1f6beae90fd426e72d2b3ca23435c8b73db3f.tar.bz2 linux-bef1f6beae90fd426e72d2b3ca23435c8b73db3f.zip | |
selftests/bpf: Add bpf_percpu_obj_{new,drop}() macro in bpf_experimental.h
[ Upstream commit 968c76cb3dc6cc86e8099ecaa5c30dc0d4738a30 ]
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: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20230827152805.1999417-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Stable-dep-of: aa30eb3260b2 ("bpf: Force checkpoint when jmp history is too long")
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | tools/testing/selftests/bpf/bpf_experimental.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/bpf_experimental.h b/tools/testing/selftests/bpf/bpf_experimental.h index 209811b1993a..4494eaa9937e 100644 --- a/tools/testing/selftests/bpf/bpf_experimental.h +++ b/tools/testing/selftests/bpf/bpf_experimental.h @@ -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 |