[net-next 0/2] BPF, kprobes: Add current_in_cgroup helper

[Sargun Dhillon <sargun@sargun.me>]

This patchset includes a helper and an example to determine whether the kprobe 
is currently executing in the context of a specific cgroup based on a cgroup
bpf map / array. 

Sargun Dhillon (2):
  bpf: Add bpf_current_in_cgroup helper
  samples/bpf: Add example using current_in_cgroup

 include/linux/bpf.h                        | 24 +++++++++++
 include/uapi/linux/bpf.h                   | 11 +++++
 kernel/bpf/arraymap.c                      |  2 +-
 kernel/bpf/verifier.c                      |  4 +-
 kernel/trace/bpf_trace.c                   | 34 +++++++++++++++
 net/core/filter.c                          | 11 ++---
 samples/bpf/Makefile                       |  4 ++
 samples/bpf/bpf_helpers.h                  |  2 +
 samples/bpf/trace_current_in_cgroup_kern.c | 44 ++++++++++++++++++++
 samples/bpf/trace_current_in_cgroup_user.c | 66 ++++++++++++++++++++++++++++++
 10 files changed, 193 insertions(+), 9 deletions(-)
 create mode 100644 samples/bpf/trace_current_in_cgroup_kern.c
 create mode 100644 samples/bpf/trace_current_in_cgroup_user.c

-- 
2.7.4