From b3ce907950350a58880b94fed2b6022f160b8b9a Mon Sep 17 00:00:00 2001 From: Andrii Nakryiko Date: Thu, 9 Dec 2021 11:38:35 -0800 Subject: libbpf: Add per-program log buffer setter and getter Allow to set user-provided log buffer on a per-program basis ([0]). This gives great deal of flexibility in terms of which programs are loaded with logging enabled and where corresponding logs go. Log buffer set with bpf_program__set_log_buf() overrides kernel_log_buf and kernel_log_size settings set at bpf_object open time through bpf_object_open_opts, if any. Adjust bpf_object_load_prog_instance() logic to not perform own log buf allocation and load retry if custom log buffer is provided by the user. [0] Closes: https://github.com/libbpf/libbpf/issues/418 Signed-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20211209193840.1248570-8-andrii@kernel.org --- tools/lib/bpf/libbpf.map | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools/lib/bpf/libbpf.map') diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map index 08cdfe840436..4d483af7dba6 100644 --- a/tools/lib/bpf/libbpf.map +++ b/tools/lib/bpf/libbpf.map @@ -423,6 +423,8 @@ LIBBPF_0.6.0 { LIBBPF_0.7.0 { global: bpf_btf_load; + bpf_program__log_buf; bpf_program__log_level; + bpf_program__set_log_buf; bpf_program__set_log_level; }; -- cgit v1.2.3-59-g8ed1b