linux/tools/testing
Daniel Borkmann 3dca21156b bpf, libbpf: simplify and cleanup perf ring buffer walk
Simplify bpf_perf_event_read_simple() a bit and fix up some minor
things along the way: the return code in the header is not of type
int but enum bpf_perf_event_ret instead. Once callback indicated
to break the loop walking event data, it also needs to be consumed
in data_tail since it has been processed already.

Moreover, bpf_perf_event_print_t callback should avoid void * as
we actually get a pointer to struct perf_event_header and thus
applications can make use of container_of() to have type checks.
The walk also doesn't have to use modulo op since the ring size is
required to be power of two.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-10-20 23:13:32 -07:00
..
fault-injection License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ktest These commits have either been sitting in my INBOX or have been 2018-04-11 16:42:27 -07:00
nvdimm tools/testing/nvdimm: improve emulation of smart injection 2018-07-31 17:05:19 -07:00
radix-tree test_ida: check_ida_destroy and check_ida_alloc 2018-08-21 23:54:21 -04:00
scatterlist tools/testing/scatterlist: Test new __sg_alloc_table_from_pages 2017-09-07 10:54:40 +01:00
selftests bpf, libbpf: simplify and cleanup perf ring buffer walk 2018-10-20 23:13:32 -07:00
vsock VSOCK: add tools/testing/vsock/vsock_diag_test 2017-10-05 18:44:17 -07:00