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bpf: perf event change needed for subsequent bpf helpers

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This patch does not impact existing functionalities.
It contains the changes in perf event area needed for
subsequent bpf_perf_event_read_value and
bpf_perf_prog_read_value helpers.

Signed-off-by: Yonghong Song <yhs@fb.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yonghong Song
2017-10-05 09:19:19 -07:00
committed by David S. Miller
parent bdc476413d
commit 97562633bc
4 changed files with 20 additions and 6 deletions
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2
kernel/bpf/arraymap.c
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@ -492,7 +492,7 @@ static void *perf_event_fd_array_get_ptr(struct bpf_map *map,
ee = ERR_PTR(-EOPNOTSUPP);
event = perf_file->private_data;
if (perf_event_read_local(event, &value) == -EOPNOTSUPP)
if (perf_event_read_local(event, &value, NULL, NULL) == -EOPNOTSUPP)
goto err_out;
ee = bpf_event_entry_gen(perf_file, map_file);