[PATCH bpf-next v4 11/27] bpf: Factor out bpf_trampoline_init function
flat view
STALE1865d
From: Jiri Olsa <hidden>
Date: 2021-08-26 19:40:55
Also in:
bpf
Subsystem:
bpf [core], bpf [general] (safe dynamic programs and tools), the rest · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Linus Torvalds
Separating out bpf_trampoline_init function, so it can be used from other places in following patches. Signed-off-by: Jiri Olsa <jolsa@kernel.org> --- kernel/bpf/trampoline.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-)
diff --git a/kernel/bpf/trampoline.c b/kernel/bpf/trampoline.c
index 525fa74c2f62..f44899c9698a 100644
--- a/kernel/bpf/trampoline.c
+++ b/kernel/bpf/trampoline.c@@ -58,11 +58,22 @@ void bpf_image_ksym_del(struct bpf_ksym *ksym) PAGE_SIZE, true, ksym->name); } +static void bpf_trampoline_init(struct bpf_trampoline *tr, u64 key) +{ + int i; + + tr->key = key; + INIT_HLIST_NODE(&tr->hlist); + refcount_set(&tr->refcnt, 1); + mutex_init(&tr->mutex); + for (i = 0; i < BPF_TRAMP_MAX; i++) + INIT_HLIST_HEAD(&tr->progs_hlist[i]); +} + static struct bpf_trampoline *bpf_trampoline_lookup(u64 key) { struct bpf_trampoline *tr; struct hlist_head *head; - int i; mutex_lock(&trampoline_mutex); head = &trampoline_table[hash_64(key, TRAMPOLINE_HASH_BITS)];
@@ -75,14 +86,8 @@ static struct bpf_trampoline *bpf_trampoline_lookup(u64 key) tr = kzalloc(sizeof(*tr), GFP_KERNEL); if (!tr) goto out; - - tr->key = key; - INIT_HLIST_NODE(&tr->hlist); + bpf_trampoline_init(tr, key); hlist_add_head(&tr->hlist, head); - refcount_set(&tr->refcnt, 1); - mutex_init(&tr->mutex); - for (i = 0; i < BPF_TRAMP_MAX; i++) - INIT_HLIST_HEAD(&tr->progs_hlist[i]); out: mutex_unlock(&trampoline_mutex); return tr;
--
2.31.1