summaryrefslogtreecommitdiffstats
path: root/include
diff options
context:
space:
mode:
Diffstat (limited to 'include')
-rw-r--r--include/uapi/linux/bpf.h11
1 files changed, 7 insertions, 4 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 94dfa9def355..e78aece03628 100644
--- a/include/uapi/linux/bpf.h
+++ b/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