Add helper bpf_find_vma. This can be used in some profiling use cases. It
might also be useful for LSM.

Song Liu (2):
  bpf: introduce helper bpf_find_vma
  selftests/bpf: add tests for bpf_find_vma

 include/linux/bpf.h                           |   1 +
 include/uapi/linux/bpf.h                      |  20 ++++
 kernel/bpf/task_iter.c                        | 102 +++++++++++++++++-
 kernel/bpf/verifier.c                         |  36 +++++++
 kernel/trace/bpf_trace.c                      |   2 +
 tools/include/uapi/linux/bpf.h                |  19 ++++
 .../selftests/bpf/prog_tests/find_vma.c       |  95 ++++++++++++++++
 tools/testing/selftests/bpf/progs/find_vma.c  |  70 ++++++++++++
 8 files changed, 344 insertions(+), 1 deletion(-)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/find_vma.c
 create mode 100644 tools/testing/selftests/bpf/progs/find_vma.c

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2.30.2