diff options
| author |   Andrii Nakryiko <andriin@fb.com> | 2019-10-11 15:01:46 -0700 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2019-10-12 16:15:10 -0700 |
| commit | 598dc04fa0f131371cb120f2bf4e594f42f00057 (patch) | |
| tree | 00f3a2806fdf45d942b8f529f13d2ccdbe1c0ad1 /tools/testing/selftests/bpf/Makefile | |
| parent | selftests/bpf: Enforce libbpf build before BPF programs are built (diff) | |
| download | linux-dev-598dc04fa0f131371cb120f2bf4e594f42f00057.tar.xz linux-dev-598dc04fa0f131371cb120f2bf4e594f42f00057.zip | |
selftests/bpf: Remove obsolete pahole/BTF support detection
Given lots of selftests won't work without recent enough Clang/LLVM that
fully supports BTF, there is no point in maintaining outdated BTF
support detection and fall-back to pahole logic. Just assume we have
everything we need.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20191011220146.3798961-3-andriin@fb.com
Diffstat (limited to 'tools/testing/selftests/bpf/Makefile')
| -rw-r--r-- | tools/testing/selftests/bpf/Makefile | 54 |
1 files changed, 6 insertions, 48 deletions
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index f958643d36da..00d05c5e2d57 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -15,8 +15,6 @@ endif CLANG ?= clang LLC ?= llc LLVM_OBJCOPY ?= llvm-objcopy -LLVM_READELF ?= llvm-readelf -BTF_PAHOLE ?= pahole BPF_GCC ?= $(shell command -v bpf-gcc;) CFLAGS += -g -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(BPFDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include \ -Dbpf_prog_load=bpf_prog_test_load \ @@ -126,16 +124,6 @@ force: $(BPFOBJ): force $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/ -PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1) - -# Let newer LLVM versions transparently probe the kernel for availability -# of full BPF instruction set. -ifeq ($(PROBE),) - CPU ?= probe -else - CPU ?= generic -endif - # Get Clang's default includes on this system, as opposed to those seen by # '-target bpf'. This fixes "missing" files on some architectures/distros, # such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. @@ -147,8 +135,9 @@ $(shell $(1) -v -E - </dev/null 2>&1 \ | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') endef CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG)) -BPF_CFLAGS = -I. -I./include/uapi -I../../../include/uapi \ - -I$(BPFDIR) -I$(OUTPUT)/../usr/include -D__TARGET_ARCH_$(SRCARCH) +BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) \ + -I. -I./include/uapi -I../../../include/uapi \ + -I$(BPFDIR) -I$(OUTPUT)/../usr/include CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \ -Wno-compare-distinct-pointer-types @@ -162,28 +151,6 @@ $(OUTPUT)/test_stack_map.o: test_queue_stack_map.h $(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h $(OUTPUT)/test_progs.o: flow_dissector_load.h -BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris) -BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF) -BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm') -BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \ - $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \ - $(LLVM_READELF) -S ./llvm_btf_verify.o | grep BTF; \ - /bin/rm -f ./llvm_btf_verify.o) - -ifneq ($(BTF_LLVM_PROBE),) - BPF_CFLAGS += -g -else -ifneq ($(BTF_LLC_PROBE),) -ifneq ($(BTF_PAHOLE_PROBE),) -ifneq ($(BTF_OBJCOPY_PROBE),) - BPF_CFLAGS += -g - LLC_FLAGS += -mattr=dwarfris - DWARF2BTF = y -endif -endif -endif -endif - TEST_PROGS_CFLAGS := -I. -I$(OUTPUT) TEST_MAPS_CFLAGS := -I. -I$(OUTPUT) TEST_VERIFIER_CFLAGS := -I. -I$(OUTPUT) -Iverifier @@ -212,11 +179,8 @@ $(ALU32_BUILD_DIR)/%.o: progs/%.c $(ALU32_BUILD_DIR)/test_progs_32 \ | $(ALU32_BUILD_DIR) ($(CLANG) $(BPF_CFLAGS) $(CLANG_CFLAGS) -O2 -target bpf -emit-llvm \ -c $< -o - || echo "clang failed") | \ - $(LLC) -march=bpf -mattr=+alu32 -mcpu=$(CPU) $(LLC_FLAGS) \ + $(LLC) -march=bpf -mcpu=probe -mattr=+alu32 $(LLC_FLAGS) \ -filetype=obj -o $@ -ifeq ($(DWARF2BTF),y) - $(BTF_PAHOLE) -J $@ -endif endif ifneq ($(BPF_GCC),) @@ -251,19 +215,13 @@ endif $(OUTPUT)/test_xdp.o: progs/test_xdp.c ($(CLANG) $(BPF_CFLAGS) $(CLANG_CFLAGS) -O2 -emit-llvm -c $< -o - || \ echo "clang failed") | \ - $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@ -ifeq ($(DWARF2BTF),y) - $(BTF_PAHOLE) -J $@ -endif + $(LLC) -march=bpf -mcpu=probe $(LLC_FLAGS) -filetype=obj -o $@ # libbpf has to be built before BPF programs due to bpf_helper_defs.h $(OUTPUT)/%.o: progs/%.c | $(BPFOBJ) ($(CLANG) $(BPF_CFLAGS) $(CLANG_CFLAGS) -O2 -target bpf -emit-llvm \ -c $< -o - || echo "clang failed") | \ - $(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@ -ifeq ($(DWARF2BTF),y) - $(BTF_PAHOLE) -J $@ -endif + $(LLC) -march=bpf -mcpu=probe $(LLC_FLAGS) -filetype=obj -o $@ PROG_TESTS_DIR = $(OUTPUT)/prog_tests $(PROG_TESTS_DIR): |