Re: [PATCH bpf-next v2 8/9] libbpf: add support for the multi-link of tracing
From: Quentin Monnet <hidden>
Date: 2024-03-11 15:29:12
Also in:
bpf, linux-arm-kernel, linux-kselftest, linux-riscv, linux-s390, linux-trace-kernel, lkml
2024-03-11 09:35 UTC+0000 ~ Menglong Dong [off-list ref]
quoted hunk ↗ jump to hunk
Add support for the attach types of: BPF_TRACE_FENTRY_MULTI BPF_TRACE_FEXIT_MULTI BPF_MODIFY_RETURN_MULTI Signed-off-by: Menglong Dong <redacted> --- tools/bpf/bpftool/common.c | 3 + tools/lib/bpf/bpf.c | 10 +++ tools/lib/bpf/bpf.h | 6 ++ tools/lib/bpf/libbpf.c | 168 ++++++++++++++++++++++++++++++++++++- tools/lib/bpf/libbpf.h | 14 ++++ tools/lib/bpf/libbpf.map | 1 + 6 files changed, 199 insertions(+), 3 deletions(-)diff --git a/tools/bpf/bpftool/common.c b/tools/bpf/bpftool/common.c index cc6e6aae2447..ffc85256671d 100644 --- a/tools/bpf/bpftool/common.c +++ b/tools/bpf/bpftool/common.c@@ -1089,6 +1089,9 @@ const char *bpf_attach_type_input_str(enum bpf_attach_type t) case BPF_TRACE_FENTRY: return "fentry"; case BPF_TRACE_FEXIT: return "fexit"; case BPF_MODIFY_RETURN: return "mod_ret"; + case BPF_TRACE_FENTRY_MULTI: return "fentry_multi"; + case BPF_TRACE_FEXIT_MULTI: return "fexit_multi"; + case BPF_MODIFY_RETURN_MULTI: return "mod_ret_multi"; case BPF_SK_REUSEPORT_SELECT: return "sk_skb_reuseport_select"; case BPF_SK_REUSEPORT_SELECT_OR_MIGRATE: return "sk_skb_reuseport_select_or_migrate"; default: return libbpf_bpf_attach_type_str(t);
Hi, please drop this part in bpftool. bpf_attach_type_input_str() is used for legacy attach type names that were used before bpftool switched to libbpf_bpf_attach_type_str(), and that are still supported today. The names for new attach types should just be retrieved with libbpf_bpf_attach_type_str(). And function bpf_attach_type_input_str() is also only used for attaching cgroup-related programs with "bpftool cgroup (at|de)tach". Thanks, Quentin