[PATCH bpf-next v2 1/3] bpf: new btf kfunc hooks for tracepoint and perf event

[JP Kobryn <inwardvessel@gmail.com>]

The additional hooks (and prog-to-hook mapping) for tracepoint and perf
event programs allow for registering kfuncs to be used within these
program types.

Signed-off-by: JP Kobryn <inwardvessel@gmail.com>
---
 kernel/bpf/btf.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 520f49f422fe..4816e309314e 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -210,6 +210,7 @@ enum btf_kfunc_hook {
 	BTF_KFUNC_HOOK_TC,
 	BTF_KFUNC_HOOK_STRUCT_OPS,
 	BTF_KFUNC_HOOK_TRACING,
+	BTF_KFUNC_HOOK_TRACEPOINT,
 	BTF_KFUNC_HOOK_SYSCALL,
 	BTF_KFUNC_HOOK_FMODRET,
 	BTF_KFUNC_HOOK_CGROUP_SKB,
@@ -219,6 +220,7 @@ enum btf_kfunc_hook {
 	BTF_KFUNC_HOOK_LWT,
 	BTF_KFUNC_HOOK_NETFILTER,
 	BTF_KFUNC_HOOK_KPROBE,
+	BTF_KFUNC_HOOK_PERF_EVENT,
 	BTF_KFUNC_HOOK_MAX,
 };
 
@@ -8306,6 +8308,8 @@ static int bpf_prog_type_to_kfunc_hook(enum bpf_prog_type prog_type)
 	case BPF_PROG_TYPE_TRACING:
 	case BPF_PROG_TYPE_LSM:
 		return BTF_KFUNC_HOOK_TRACING;
+	case BPF_PROG_TYPE_TRACEPOINT:
+		return BTF_KFUNC_HOOK_TRACEPOINT;
 	case BPF_PROG_TYPE_SYSCALL:
 		return BTF_KFUNC_HOOK_SYSCALL;
 	case BPF_PROG_TYPE_CGROUP_SKB:
@@ -8326,6 +8330,8 @@ static int bpf_prog_type_to_kfunc_hook(enum bpf_prog_type prog_type)
 		return BTF_KFUNC_HOOK_NETFILTER;
 	case BPF_PROG_TYPE_KPROBE:
 		return BTF_KFUNC_HOOK_KPROBE;
+	case BPF_PROG_TYPE_PERF_EVENT:
+		return BTF_KFUNC_HOOK_PERF_EVENT;
 	default:
 		return BTF_KFUNC_HOOK_MAX;
 	}
-- 
2.46.0