Commit 0bee1067 authored by Song Liu's avatar Song Liu Committed by Alexei Starovoitov
Browse files

libbpf: Add support for command BPF_ENABLE_STATS 



bpf_enable_stats() is added to enable given stats.

Signed-off-by: default avatarSong Liu <songliubraving@fb.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200430071506.1408910-3-songliubraving@fb.com
parent d46edd67

tools/lib/bpf/bpf.c

+10 −0
Original line number Diff line number Diff line
@@ -841,3 +841,13 @@ int bpf_task_fd_query(int pid, int fd, __u32 flags, char *buf, __u32 *buf_len, 


	return err;

}



int bpf_enable_stats(enum bpf_stats_type type)

{

	union bpf_attr attr;



	memset(&attr, 0, sizeof(attr));

	attr.enable_stats.type = type;



	return sys_bpf(BPF_ENABLE_STATS, &attr, sizeof(attr));

}

tools/lib/bpf/bpf.h

+1 −0
Original line number Diff line number Diff line
@@ -231,6 +231,7 @@ LIBBPF_API int bpf_load_btf(void *btf, __u32 btf_size, char *log_buf, 
LIBBPF_API int bpf_task_fd_query(int pid, int fd, __u32 flags, char *buf,

				 __u32 *buf_len, __u32 *prog_id, __u32 *fd_type,

				 __u64 *probe_offset, __u64 *probe_addr);

LIBBPF_API int bpf_enable_stats(enum bpf_stats_type type);



#ifdef __cplusplus

} /* extern "C" */

tools/lib/bpf/libbpf.map

+1 −0
Original line number Diff line number Diff line
@@ -257,6 +257,7 @@ LIBBPF_0.0.8 { 


LIBBPF_0.0.9 {

	global:

		bpf_enable_stats;

		bpf_link_get_fd_by_id;

		bpf_link_get_next_id;

} LIBBPF_0.0.8;

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