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authorKaixu Xia <xiakaixu@huawei.com>2015-08-06 10:02:35 +0300
committerDavid S. Miller <davem@davemloft.net>2015-08-10 08:50:06 +0300
commit35578d7984003097af2b1e34502bc943d40c1804 (patch)
treeb2eca5ddc9446e771dd5a9e1629b12f98b9f2bf0 /samples/bpf
parentea317b267e9d03a8241893aa176fba7661d07579 (diff)
downloadlinux-35578d7984003097af2b1e34502bc943d40c1804.tar.xz
bpf: Implement function bpf_perf_event_read() that get the selected hardware PMU conuter
According to the perf_event_map_fd and index, the function bpf_perf_event_read() can convert the corresponding map value to the pointer to struct perf_event and return the Hardware PMU counter value. Signed-off-by: Kaixu Xia <xiakaixu@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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