[PATCH 16/27] bpf tools: Load a program with different instances using preprocessor

In this patch, caller of libbpf is able to control the loaded programs by installing a preprocessor callback for a BPF program. With preprocessor, different instances can be created from one BPF program. This patch will be used by perf to generate different prologue for different 'struct probe_tra

[PATCH 16/27] bpf tools: Load a program with different instances using preprocessor

In this patch, caller of libbpf is able to control the loaded programs by installing a preprocessor callback for a BPF program. With preprocessor, different instances can be created from one BPF program. This patch will be used by perf to generate different prologue for different 'struct probe_tra