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Code Issues Releases Wiki Activity

libbpf: Add support for command BPF_ENABLE_STATS

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bpf_enable_stats() is added to enable given stats.

Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200430071506.1408910-3-songliubraving@fb.com
This commit is contained in:
Song Liu 2020-04-30 00:15:05 -07:00 committed by Alexei Starovoitov
parent d46edd671a
commit 0bee106716
3 changed files with 12 additions and 0 deletions
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10
tools/lib/bpf/bpf.c
View file

@ -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));
}

1
tools/lib/bpf/bpf.h
View file

@ -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" */

1
tools/lib/bpf/libbpf.map
View file

@ -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;