diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/include/uapi/linux/bpf.h | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index 94dfa9def355..e78aece03628 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -313,8 +313,11 @@ union bpf_attr { * @flags: room for future extensions * Return: 0 on success or negative error * - * u64 bpf_perf_event_read(&map, index) - * Return: Number events read or error code + * u64 bpf_perf_event_read(map, flags) + * read perf event counter value + * @map: pointer to perf_event_array map + * @flags: index of event in the map or bitmask flags + * Return: value of perf event counter read or error code * * int bpf_redirect(ifindex, flags) * redirect to another netdev @@ -328,11 +331,11 @@ union bpf_attr { * @skb: pointer to skb * Return: realm if != 0 * - * int bpf_perf_event_output(ctx, map, index, data, size) + * int bpf_perf_event_output(ctx, map, flags, data, size) * output perf raw sample * @ctx: struct pt_regs* * @map: pointer to perf_event_array map - * @index: index of event in the map + * @flags: index of event in the map or bitmask flags * @data: data on stack to be output as raw data * @size: size of data * Return: 0 on success or negative error |