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bpf: Add new bpf map type to store the pointer to struct perf_event

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Introduce a new bpf map type 'BPF_MAP_TYPE_PERF_EVENT_ARRAY'.
This map only stores the pointer to struct perf_event. The
user space event FDs from perf_event_open() syscall are converted
to the pointer to struct perf_event and stored in map.

Signed-off-by: Kaixu Xia <xiakaixu@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kaixu Xia 2015-08-06 07:02:34 +00:00 • committed by David S. Miller
parent 2a36f0b92e
commit ea317b267e
3 changed files with 59 additions and 0 deletions
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1
include/uapi/linux/bpf.h
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@ -114,6 +114,7 @@ enum bpf_map_type {
BPF_MAP_TYPE_HASH,
BPF_MAP_TYPE_ARRAY,
BPF_MAP_TYPE_PROG_ARRAY,
BPF_MAP_TYPE_PERF_EVENT_ARRAY,
};
enum bpf_prog_type {