From: Adam Barth <a...@fb.com>

The commit 555c8a8623a3 ("bpf: avoid stack copy and use skb ctx for event 
output")
started using 20 of initially reserved upper 32-bits of 'flags' argument
in bpf_perf_event_output(). Adjust corresponding prototype in 
samples/bpf/bpf_helpers.h

Signed-off-by: Adam Barth <a...@fb.com>
Signed-off-by: Alexei Starovoitov <a...@kernel.org>
Acked-by: Daniel Borkmann <dan...@iogearbox.net>
---
 samples/bpf/bpf_helpers.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/samples/bpf/bpf_helpers.h b/samples/bpf/bpf_helpers.h
index 217c8d507f2e..cbc52df165b4 100644
--- a/samples/bpf/bpf_helpers.h
+++ b/samples/bpf/bpf_helpers.h
@@ -37,7 +37,9 @@ static int (*bpf_clone_redirect)(void *ctx, int ifindex, int 
flags) =
        (void *) BPF_FUNC_clone_redirect;
 static int (*bpf_redirect)(int ifindex, int flags) =
        (void *) BPF_FUNC_redirect;
-static int (*bpf_perf_event_output)(void *ctx, void *map, int index, void 
*data, int size) =
+static int (*bpf_perf_event_output)(void *ctx, void *map,
+                                   unsigned long long flags, void *data,
+                                   int size) =
        (void *) BPF_FUNC_perf_event_output;
 static int (*bpf_get_stackid)(void *ctx, void *map, int flags) =
        (void *) BPF_FUNC_get_stackid;
-- 
2.8.0

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