[PATCH perf/core REBASE 1/5] samples/bpf: Make samples more libbpf-centric

Switch all of the sample code to use the function names from tools/lib/bpf so that they're consistent with that, and to declare their own log buffers. This allow the next commit to be purely devoted to getting rid of the duplicate library in samples/bpf. Signed-off-by: Joe Stringer

[PATCH perf/core REBASE 1/5] samples/bpf: Make samples more libbpf-centric

Switch all of the sample code to use the function names from tools/lib/bpf so that they're consistent with that, and to declare their own log buffers. This allow the next commit to be purely devoted to getting rid of the duplicate library in samples/bpf. Signed-off-by: Joe Stringer Cc: Alexei