From: Alexei Starovoitov <ast@xxxxxxxxxx>
Several improvements:
- optimize prog stats
- compute stats for sleepable progs
- prevent recursion fentry/fexit and sleepable progs
- allow map-in-map and per-cpu maps in sleepable progs
Alexei Starovoitov (7):
bpf: Optimize program stats
bpf: Compute program stats for sleepable programs
bpf: Add per-program recursion prevention mechanism
selftest/bpf: Add a recursion test
bpf: Count the number of times recursion was prevented
bpf: Allows per-cpu maps and map-in-map in sleepable programs
selftests/bpf: Add a test for map-in-map and per-cpu maps in sleepable
progs
arch/x86/net/bpf_jit_comp.c | 46 ++++++++-----
include/linux/bpf.h | 16 ++---
include/linux/filter.h | 12 +++-
include/uapi/linux/bpf.h | 1 +
kernel/bpf/core.c | 16 +++--
kernel/bpf/hashtab.c | 4 +-
kernel/bpf/syscall.c | 16 +++--
kernel/bpf/trampoline.c | 59 +++++++++++++---
kernel/bpf/verifier.c | 9 ++-
tools/bpf/bpftool/prog.c | 5 ++
tools/include/uapi/linux/bpf.h | 1 +
.../selftests/bpf/prog_tests/fexit_stress.c | 2 +-
.../selftests/bpf/prog_tests/recursion.c | 33 +++++++++
.../bpf/prog_tests/trampoline_count.c | 4 +-
tools/testing/selftests/bpf/progs/lsm.c | 69 +++++++++++++++++++
tools/testing/selftests/bpf/progs/recursion.c | 46 +++++++++++++
16 files changed, 282 insertions(+), 57 deletions(-)
create mode 100644 tools/testing/selftests/bpf/prog_tests/recursion.c
create mode 100644 tools/testing/selftests/bpf/progs/recursion.c
--
2.24.1
