diff mbox series

[bpf-next,2/6] bpf: export bpf_link_inc_not_zero().

Message ID 20240429213609.487820-3-thinker.li@gmail.com (mailing list archive)
State Changes Requested
Delegated to: BPF
Headers show
Series Notify user space when a struct_ops object is detached/unregisterd | expand

Checks

Context Check Description
bpf/vmtest-bpf-next-PR fail merge-conflict
netdev/tree_selection success Clearly marked for bpf-next, async
netdev/apply fail Patch does not apply to bpf-next-0

Commit Message

Kui-Feng Lee April 29, 2024, 9:36 p.m. UTC 
Make bpf_link_inc_not_zero() available to be used by bpf_struct_ops.c
later.

Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com>
---
 include/linux/bpf.h  | 1 +
 kernel/bpf/syscall.c | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index 5034c1b4ded7..8a1500764332 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -2324,6 +2324,7 @@  int bpf_link_prime(struct bpf_link *link, struct bpf_link_primer *primer);
 int bpf_link_settle(struct bpf_link_primer *primer);
 void bpf_link_cleanup(struct bpf_link_primer *primer);
 void bpf_link_inc(struct bpf_link *link);
+struct bpf_link *bpf_link_inc_not_zero(struct bpf_link *link);
 void bpf_link_put(struct bpf_link *link);
 int bpf_link_new_fd(struct bpf_link *link);
 struct bpf_link *bpf_link_get_from_fd(u32 ufd);
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 7d392ec83655..4a2f95c4b2ac 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -5364,7 +5364,7 @@  static int link_detach(union bpf_attr *attr)
 	return ret;
 }
 
-static struct bpf_link *bpf_link_inc_not_zero(struct bpf_link *link)
+struct bpf_link *bpf_link_inc_not_zero(struct bpf_link *link)
 {
 	return atomic64_fetch_add_unless(&link->refcnt, 1, 0) ? link : ERR_PTR(-ENOENT);
 }