[PATCH bpf-next v4 00/10] bpf: enhancements for multi-function programs

[Sandipan Das]

[1] Support for bpf-to-bpf function calls in the powerpc64 JIT compiler.

[2] Provide a way for resolving function calls because of the way JITed
    images are allocated in powerpc64.

[3] Fix to get JITed instruction dumps for multi-function programs from
    the bpf system call.

[4] Fix for bpftool to show delimited multi-function JITed image dumps.

v4:
 - Incorporate review comments from Jakub.
 - Fix JSON output for bpftool.

v3:
 - Change base tree tag to bpf-next.
 - Incorporate review comments from Alexei, Daniel and Jakub.
 - Make sure that the JITed image does not grow or shrink after
   the last pass due to the way the instruction sequence used
   to load a callee's address maybe optimized.
 - Make additional changes to the bpf system call and bpftool to
   make multi-function JITed dumps easier to correlate.

v2:
 - Incorporate review comments from Jakub.

Sandipan Das (10):
  bpf: support 64-bit offsets for bpf function calls
  bpf: powerpc64: pad function address loads with NOPs
  bpf: powerpc64: add JIT support for multi-function programs
  bpf: get kernel symbol addresses via syscall
  tools: bpf: sync bpf uapi header
  tools: bpftool: resolve calls without using imm field
  bpf: fix multi-function JITed dump obtained via syscall
  bpf: get JITed image lengths of functions via syscall
  tools: bpf: sync bpf uapi header
  tools: bpftool: add delimiters to multi-function JITed dumps

 arch/powerpc/net/bpf_jit_comp64.c | 110 ++++++++++++++++++++++++++++++--------
 include/uapi/linux/bpf.h          |   4 ++
 kernel/bpf/syscall.c              |  82 ++++++++++++++++++++++++++--
 kernel/bpf/verifier.c             |  22 +++++---
 tools/bpf/bpftool/prog.c          |  97 ++++++++++++++++++++++++++++++++-
 tools/bpf/bpftool/xlated_dumper.c |  14 +++--
 tools/bpf/bpftool/xlated_dumper.h |   3 ++
 tools/include/uapi/linux/bpf.h    |   4 ++
 8 files changed, 301 insertions(+), 35 deletions(-)

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2.14.3