This is an early RFC series that adds support for BPF Trampolines on
powerpc64. Some of the selftests are passing for me, but this needs more
testing and I've likely missed a few things as well. A review of the
patches and feedback about the overall approach will be great.
This series depends on some of the other BPF JIT fixes and enhancements
posted previously, as well as on ftrace direct enablement on powerpc
which has also been posted in the past.
- Naveen
Naveen N. Rao (3):
ftrace: Add ftrace_location_lookup() to lookup address of ftrace
location
powerpc/ftrace: Override ftrace_location_lookup() for MPROFILE_KERNEL
powerpc64/bpf: Add support for bpf trampolines
arch/powerpc/kernel/kprobes.c | 8 +-
arch/powerpc/kernel/trace/ftrace.c | 11 +
arch/powerpc/net/bpf_jit.h | 8 +
arch/powerpc/net/bpf_jit_comp.c | 5 +-
arch/powerpc/net/bpf_jit_comp64.c | 619 ++++++++++++++++++++++++++++-
include/linux/ftrace.h | 5 +
kernel/bpf/trampoline.c | 27 +-
kernel/trace/ftrace.c | 14 +
8 files changed, 670 insertions(+), 27 deletions(-)
base-commit: 33ecb3e590194051dc57eee1125c1d372b14c946
-- 2.34.1
