Commit 5f8f8b93 authored by Alexei Starovoitov's avatar Alexei Starovoitov Committed by Daniel Borkmann
Browse files

bpf: expose program stats via bpf_prog_info 



Return bpf program run_time_ns and run_cnt via bpf_prog_info

Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Acked-by: default avatarAndrii Nakryiko <andriin@fb.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
parent 492ecee8

include/uapi/linux/bpf.h

+2 −0
Original line number Diff line number Diff line
@@ -2813,6 +2813,8 @@ struct bpf_prog_info { 
	__u32 jited_line_info_rec_size;

	__u32 nr_prog_tags;

	__aligned_u64 prog_tags;

	__u64 run_time_ns;

	__u64 run_cnt;

} __attribute__((aligned(8)));



struct bpf_map_info {

kernel/bpf/syscall.c

+5 −0
Original line number Diff line number Diff line
@@ -2152,6 +2152,7 @@ static int bpf_prog_get_info_by_fd(struct bpf_prog *prog, 
	struct bpf_prog_info __user *uinfo = u64_to_user_ptr(attr->info.info);

	struct bpf_prog_info info = {};

	u32 info_len = attr->info.info_len;

	struct bpf_prog_stats stats;

	char __user *uinsns;

	u32 ulen;

	int err;
@@ -2191,6 +2192,10 @@ static int bpf_prog_get_info_by_fd(struct bpf_prog *prog, 
	if (err)

		return err;



	bpf_prog_get_stats(prog, &stats);

	info.run_time_ns = stats.nsecs;

	info.run_cnt = stats.cnt;



	if (!capable(CAP_SYS_ADMIN)) {

		info.jited_prog_len = 0;

		info.xlated_prog_len = 0;