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| author |   Andrii Nakryiko <andriin@fb.com> | 2019-07-06 11:06:25 -0700 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2019-07-08 15:35:43 +0200 |
| commit | d7ff34d5fb5a2f6722786863c4afa79c51f8edf2 (patch) | |
| tree | a3ff890eaa896d7a5da5a87b8cae2f48c7eb184f /tools/testing/selftests | |
| parent | libbpf: add perf buffer API (diff) | |
| download | linux-dev-d7ff34d5fb5a2f6722786863c4afa79c51f8edf2.tar.xz linux-dev-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 <andriin@fb.com>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'tools/testing/selftests')
0 files changed, 0 insertions, 0 deletions