tree 95066aef056b16a4e5e477c7f277cc69db418e5c
parent aa6a5f3cb2b2edc5b9aab0b4fdfdfa9c3b5096a8
author Alexei Starovoitov <ast@fb.com> 1472780245 -0700
committer David S. Miller <davem@davemloft.net> 1472838405 -0700

samples/bpf: add perf_event+bpf example

The bpf program is called 50 times a second and does hashmap[kern&user_stackid]++
It's primary purpose to check that key bpf helpers like map lookup, update,
get_stackid, trace_printk and ctx access are all working.
It checks:
- PERF_COUNT_HW_CPU_CYCLES on all cpus
- PERF_COUNT_HW_CPU_CYCLES for current process and inherited perf_events to children
- PERF_COUNT_SW_CPU_CLOCK on all cpus
- PERF_COUNT_SW_CPU_CLOCK for current process

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>