Currently, the kprobe BPF program attachment method for bpf_load is pretty outdated. The implementation of bpf_load "directly" controls and manages(create, delete) the kprobe events of DEBUGFS. On the other hand, using using the libbpf automatically manages the kprobe event. (under bpf_link interface) This patchset refactors kprobe tracing programs with using libbpf API for loading bpf program instead of previous bpf_load implementation. --- Changes in V2: - refactor pointer error check with libbpf_get_error - on bpf object open failure, return instead jump to cleanup - add macro for adding architecture prefix to system calls (sys_*) Daniel T. Lee (5): samples: bpf: refactor pointer error check with libbpf samples: bpf: refactor kprobe tracing user progs with libbpf samples: bpf: refactor tail call user progs with libbpf samples: bpf: add tracex7 test file to .gitignore samples: bpf: refactor kprobe, tail call kern progs map definition samples/bpf/.gitignore | 1 + samples/bpf/Makefile | 16 +++---- samples/bpf/sampleip_kern.c | 12 +++--- samples/bpf/sampleip_user.c | 7 +-- samples/bpf/sockex3_kern.c | 36 ++++++++-------- samples/bpf/sockex3_user.c | 64 +++++++++++++++++++--------- samples/bpf/trace_common.h | 13 ++++++ samples/bpf/trace_event_kern.c | 24 +++++------ samples/bpf/trace_event_user.c | 9 ++-- samples/bpf/tracex1_user.c | 37 +++++++++++++--- samples/bpf/tracex2_kern.c | 27 ++++++------ samples/bpf/tracex2_user.c | 51 ++++++++++++++++++---- samples/bpf/tracex3_kern.c | 24 +++++------ samples/bpf/tracex3_user.c | 61 +++++++++++++++++++------- samples/bpf/tracex4_kern.c | 12 +++--- samples/bpf/tracex4_user.c | 51 +++++++++++++++++----- samples/bpf/tracex5_kern.c | 14 +++--- samples/bpf/tracex5_user.c | 66 +++++++++++++++++++++++++---- samples/bpf/tracex6_kern.c | 38 +++++++++-------- samples/bpf/tracex6_user.c | 49 ++++++++++++++++++--- samples/bpf/tracex7_user.c | 39 +++++++++++++---- samples/bpf/xdp_redirect_cpu_user.c | 5 +-- 22 files changed, 455 insertions(+), 201 deletions(-) create mode 100644 samples/bpf/trace_common.h -- 2.25.1
