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authorSong Liu <songliubraving@fb.com>2020-04-30 10:15:05 +0300
committerAlexei Starovoitov <ast@kernel.org>2020-05-01 20:36:32 +0300
commit0bee106716cfb2c6da81916b968395db22bd7755 (patch)
tree6a438ee3a2376d99a6cccee19c280f2e4e791db8 /tools/lib
parentd46edd671a147032e22cfeb271a5734703093649 (diff)
downloadlinux-0bee106716cfb2c6da81916b968395db22bd7755.tar.xz
libbpf: Add support for command BPF_ENABLE_STATS
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
Diffstat (limited to 'tools/lib')
-rw-r--r--tools/lib/bpf/bpf.c10
-rw-r--r--tools/lib/bpf/bpf.h1
-rw-r--r--tools/lib/bpf/libbpf.map1
3 files changed, 12 insertions, 0 deletions
diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c
index 8f2f0958d446..43322f0d6c7f 100644
--- a/tools/lib/bpf/bpf.c
+++ b/tools/lib/bpf/bpf.c
@@ -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));
+}
diff --git a/tools/lib/bpf/bpf.h b/tools/lib/bpf/bpf.h
index 335b457b3a25..1901b2777854 100644
--- a/tools/lib/bpf/bpf.h
+++ b/tools/lib/bpf/bpf.h
@@ -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" */
diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map
index 7cd49aa38005..e03bd4db827e 100644
--- a/tools/lib/bpf/libbpf.map
+++ b/tools/lib/bpf/libbpf.map
@@ -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;