Commit f915fcb3 authored by Jiri Olsa's avatar Jiri Olsa Committed by Andrii Nakryiko
Browse files

bpf: Count stats for kprobe_multi programs 



Adding support to gather missed stats for kprobe_multi
programs due to bpf_prog_active protection.

Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Signed-off-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Tested-by: default avatarSong Liu <song@kernel.org>
Reviewed-by: default avatarSong Liu <song@kernel.org>
Link: https://lore.kernel.org/bpf/20230920213145.1941596-2-jolsa@kernel.org
parent e0fa6523

kernel/trace/bpf_trace.c

+1 −0
Original line number Diff line number Diff line
@@ -2710,6 +2710,7 @@ kprobe_multi_link_prog_run(struct bpf_kprobe_multi_link *link, 
	int err;



	if (unlikely(__this_cpu_inc_return(bpf_prog_active) != 1)) {

		bpf_prog_inc_misses_counter(link->link.prog);

		err = 0;

		goto out;

	}