diff options
| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2023-01-28 01:06:43 +0100 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-01-28 12:45:15 -0800 |
| commit | 0f0e5f5bd5066c9ffaa006e26fc7d092b04d4088 (patch) | |
| tree | 7a914f3619b1294282c7c09947eb2e9ca578f2a7 /kernel/bpf/preload/iterators/Makefile | |
| parent | 42fae973c2b168d527c8b4f6a02828ecd1e19626 (diff) | |
bpf: iterators: Split iterators.lskel.h into little- and big- endian versions
iterators.lskel.h is little-endian, therefore bpf iterator is currently
broken on big-endian systems. Introduce a big-endian version and add
instructions regarding its generation. Unfortunately bpftool's
cross-endianness capabilities are limited to BTF right now, so the
procedure requires access to a big-endian machine or a configured
emulator.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Link: https://lore.kernel.org/r/20230128000650.1516334-25-iii@linux.ibm.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/bpf/preload/iterators/Makefile')
| -rw-r--r-- | kernel/bpf/preload/iterators/Makefile | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/kernel/bpf/preload/iterators/Makefile b/kernel/bpf/preload/iterators/Makefile index 6762b1260f2f..8937dc6bc8d0 100644 --- a/kernel/bpf/preload/iterators/Makefile +++ b/kernel/bpf/preload/iterators/Makefile @@ -35,20 +35,22 @@ endif .PHONY: all clean -all: iterators.lskel.h +all: iterators.lskel-little-endian.h + +big: iterators.lskel-big-endian.h clean: $(call msg,CLEAN) $(Q)rm -rf $(OUTPUT) iterators -iterators.lskel.h: $(OUTPUT)/iterators.bpf.o | $(BPFTOOL) +iterators.lskel-%.h: $(OUTPUT)/%/iterators.bpf.o | $(BPFTOOL) $(call msg,GEN-SKEL,$@) $(Q)$(BPFTOOL) gen skeleton -L $< > $@ - -$(OUTPUT)/iterators.bpf.o: iterators.bpf.c $(BPFOBJ) | $(OUTPUT) +$(OUTPUT)/%/iterators.bpf.o: iterators.bpf.c $(BPFOBJ) | $(OUTPUT) $(call msg,BPF,$@) - $(Q)$(CLANG) -g -O2 -target bpf $(INCLUDES) \ + $(Q)mkdir -p $(@D) + $(Q)$(CLANG) -g -O2 -target bpf -m$* $(INCLUDES) \ -c $(filter %.c,$^) -o $@ && \ $(LLVM_STRIP) -g $@ |