[0/8] eBPF arm64 JIT support

Message ID 20190903105938.33231-1-jerinj@marvell.com (mailing list archive)


Jerin Jacob Kollanukkaran Sept. 3, 2019, 10:59 a.m. UTC
  From: Jerin Jacob <jerinj@marvell.com>

Added eBPF arm64 JIT support to improve the eBPF program performance
on arm64.

dpdk.org/examples/bpf/t1.c application shows around 50% improvement
on OCTEON TX2 platform in JIT vs interpreter mode.

Verified the implementation using existing bpf_autotest application.

# echo "bpf_autotest" | sudo ./build/app/test -c 0x3

run_test(test_store1) start
run_test(test_store2) start
run_test(test_load1) start
run_test(test_ldimm1) start
run_test(test_mul1) start
run_test(test_shift1) start
run_test(test_jump1) start
run_test(test_alu1) start
run_test(test_bele1) start
run_test(test_xadd1) start
run_test(test_div1) start
bpf_exec(0xffffa37c0000): division by 0 at pc: 0x68;
run_test(test_call1) start
run_test(test_call2) start
run_test(test_call3) start
Test OK

Jerin Jacob (8):
  bpf/arm64: add build infrastructure
  bpf/arm64: add prologue and epilogue
  bpf/arm64: add basic arithmetic operations
  bpf/arm64: add logical operations
  bpf/arm64: add byte swap operations
  bpf/arm64: add load and store operations
  bpf/arm64: add atomic-exchange-and-add operation
  bpf/arm64: add branch operation

 MAINTAINERS                            |    1 +
 doc/guides/prog_guide/bpf_lib.rst      |    2 +-
 doc/guides/rel_notes/release_19_11.rst |    5 +
 lib/librte_bpf/Makefile                |    2 +
 lib/librte_bpf/bpf.c                   |    4 +-
 lib/librte_bpf/bpf_impl.h              |    3 +-
 lib/librte_bpf/bpf_jit_arm64.c         | 1451 ++++++++++++++++++++++++
 lib/librte_bpf/meson.build             |    2 +
 8 files changed, 1466 insertions(+), 4 deletions(-)
 create mode 100644 lib/librte_bpf/bpf_jit_arm64.c