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authorAlexei Starovoitov <ast@plumgrid.com>2015-10-21 05:02:35 +0200
committerDavid S. Miller <davem@davemloft.net>2015-10-22 15:42:15 +0200
commit39111695b1b88a21e81983a38786d877e770da81 (patch)
tree33c57207f5ed18a5408ed9c25ec0ab169ec0fb5d /scripts/markup_oops.pl
parentbpf: introduce bpf_perf_event_output() helper (diff)
downloadlinux-39111695b1b88a21e81983a38786d877e770da81.tar.xz
linux-39111695b1b88a21e81983a38786d877e770da81.zip
samples: bpf: add bpf_perf_event_output example
Performance test and example of bpf_perf_event_output(). kprobe is attached to sys_write() and trivial bpf program streams pid+cookie into userspace via PERF_COUNT_SW_BPF_OUTPUT event. Usage: $ sudo ./bld_x64/samples/bpf/trace_output recv 2968913 events per sec Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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