2 commits

Author	SHA1	Message	Date
Alexei Starovoitov	569cc39d39	samples/bpf: fix trace_output example ... llvm cannot always recognize memset as builtin function and optimize it away, so just delete it. It was a leftover from testing of bpf_perf_event_output() with large data structures. Fixes: 39111695b1 ("samples: bpf: add bpf_perf_event_output example") Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>	2016-04-28 17:29:45 -04:00
Alexei Starovoitov	39111695b1	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>	2015-10-22 06:42:15 -07:00