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(parent: a43eec3) | patch
samples: bpf: add bpf_perf_event_output example
authorAlexei Starovoitov <ast@plumgrid.com>
Wed, 21 Oct 2015 03:02:35 +0000 (20:02 -0700)
committerDavid S. Miller <davem@davemloft.net>
Thu, 22 Oct 2015 13:42:15 +0000 (06:42 -0700)
commit39111695b1b88a21e81983a38786d877e770da81
tree33c57207f5ed18a5408ed9c25ec0ab169ec0fb5dtree | snapshot
parenta43eec304259a6c637f4014a6d4767159b6a3aa3commit | diff
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>
samples/bpf/Makefile diff | blob | history
samples/bpf/bpf_helpers.h diff | blob | history
samples/bpf/trace_output_kern.c [new file with mode: 0644] blob
samples/bpf/trace_output_user.c [new file with mode: 0644] blob
Domain: System / Kernel;