On 06/11/2019 02:56 AM, Hechao Li wrote: > Getting number of possible CPUs is commonly used for per-CPU BPF maps > and perf_event_maps. Add a new API libbpf_num_possible_cpus() that > helps user with per-CPU related operations and remove duplicate > implementations in bpftool and selftests. > > v2: Save errno before calling pr_warning in case it is changed. > v3: Make sure libbpf_num_possible_cpus never returns 0 so that user only > has to check if ret value < 0. > v4: Fix error code when reading 0 bytes from possible CPU file. > v5: Fix selftests compliation issue. > v6: Split commit to reuse libbpf_num_possible_cpus() into two commits: > One commit to remove bpf_util.h from test BPF C programs. > One commit to reuse libbpf_num_possible_cpus() in bpftools > and bpf_util.h. > > > Hechao Li (3): > bpf: add a new API libbpf_num_possible_cpus() > selftests/bpf: remove bpf_util.h from BPF C progs > bpf: use libbpf_num_possible_cpus internally > > tools/bpf/bpftool/common.c | 53 ++--------------- > tools/lib/bpf/libbpf.c | 57 +++++++++++++++++++ > tools/lib/bpf/libbpf.h | 16 ++++++ > tools/lib/bpf/libbpf.map | 1 + > tools/testing/selftests/bpf/bpf_endian.h | 1 + > tools/testing/selftests/bpf/bpf_util.h | 37 ++---------- > .../selftests/bpf/progs/sockmap_parse_prog.c | 1 - > .../bpf/progs/sockmap_tcp_msg_prog.c | 2 +- > .../bpf/progs/sockmap_verdict_prog.c | 1 - > .../selftests/bpf/progs/test_sysctl_prog.c | 5 +- > 10 files changed, 90 insertions(+), 84 deletions(-) > Applied, thanks!
