diff options
| author | Andrii Nakryiko <[email protected]> | 2019-07-06 18:06:25 +0000 |
|---|---|---|
| committer | Daniel Borkmann <[email protected]> | 2019-07-08 13:35:43 +0000 |
| commit | d7ff34d5fb5a2f6722786863c4afa79c51f8edf2 (patch) | |
| tree | a3ff890eaa896d7a5da5a87b8cae2f48c7eb184f /tools/testing/selftests/bpf/prog_tests/perf_buffer.c | |
| parent | libbpf: add perf buffer API (diff) | |
| download | kernel-d7ff34d5fb5a2f6722786863c4afa79c51f8edf2.tar.gz kernel-d7ff34d5fb5a2f6722786863c4afa79c51f8edf2.zip | |
libbpf: auto-set PERF_EVENT_ARRAY size to number of CPUs
For BPF_MAP_TYPE_PERF_EVENT_ARRAY typically correct size is number of
possible CPUs. This is impossible to specify at compilation time. This
change adds automatic setting of PERF_EVENT_ARRAY size to number of
system CPUs, unless non-zero size is specified explicitly. This allows
to adjust size for advanced specific cases, while providing convenient
and logical defaults.
Signed-off-by: Andrii Nakryiko <[email protected]>
Acked-by: Song Liu <[email protected]>
Acked-by: Yonghong Song <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/perf_buffer.c')
0 files changed, 0 insertions, 0 deletions