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authorJiri Olsa <jolsa@kernel.org>2023-11-25 20:31:27 +0100
committerAndrii Nakryiko <andrii@kernel.org>2023-11-28 21:50:09 -0800
commite56fdbfb06e26a7066b070967badef4148528df2 (patch)
treebeb6f242eaecc16d3f1db0732fdaae0618df552e /include/uapi/linux/bpf.h
parent4930b7f53a298533bc31d7540b6ea8b79a000331 (diff)
bpf: Add link_info support for uprobe multi link
Adding support to get uprobe_link details through bpf_link_info interface. Adding new struct uprobe_multi to struct bpf_link_info to carry the uprobe_multi link details. The uprobe_multi.count is passed from user space to denote size of array fields (offsets/ref_ctr_offsets/cookies). The actual array size is stored back to uprobe_multi.count (allowing user to find out the actual array size) and array fields are populated up to the user passed size. All the non-array fields (path/count/flags/pid) are always set. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/bpf/20231125193130.834322-4-jolsa@kernel.org
Diffstat (limited to 'include/uapi/linux/bpf.h')
-rw-r--r--include/uapi/linux/bpf.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 7a5498242eaa..e88746ba7d21 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -6563,6 +6563,16 @@ struct bpf_link_info {
__u64 missed;
} kprobe_multi;
struct {
+ __aligned_u64 path;
+ __aligned_u64 offsets;
+ __aligned_u64 ref_ctr_offsets;
+ __aligned_u64 cookies;
+ __u32 path_size; /* in/out: real path size on success, including zero byte */
+ __u32 count; /* in/out: uprobe_multi offsets/ref_ctr_offsets/cookies count */
+ __u32 flags;
+ __u32 pid;
+ } uprobe_multi;
+ struct {
__u32 type; /* enum bpf_perf_event_type */
__u32 :32;
union {