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9f5b3ffc3f
The s390 architecture uses the token "free" for an enum, conflicting
with the malloc/free definitions. Rename the calls to arena_malloc and
arena_free instead to prevent collisions.
Reported-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Signed-off-by: Emil Tsalapatis <etsal@meta.com>
Fixes: 86426a28c5 ("selftests/bpf: Add buddy allocator for libarena")
Acked-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/r/20260428134252.2783519-1-etsal@meta.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
93 lines
2.8 KiB
Makefile
93 lines
2.8 KiB
Makefile
# SPDX-License-Identifier: LGPL-2.1 OR BSD-2-Clause
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# Copyright (c) 2026 Meta Platforms, Inc. and affiliates.
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.PHONY: clean
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# Defaults for standalone builds
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CLANG ?= clang
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BPFTOOL ?= bpftool
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LDLIBS ?= -lbpf -lelf -lz -lrt -lpthread -lzstd
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ifeq ($(V),1)
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Q =
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msg =
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else
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Q ?= @
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msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";
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endif
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IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
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grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
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BPF_TARGET_ENDIAN ?= $(if $(IS_LITTLE_ENDIAN),--target=bpfel,--target=bpfeb)
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LIBARENA=$(abspath .)
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BPFDIR=$(abspath $(LIBARENA)/..)
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INCLUDE_DIR ?= $(BPFDIR)/tools/include
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LIBBPF_INCLUDE ?= $(INCLUDE_DIR)
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# Scan src/ and selftests/ to generate the final binaries
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LIBARENA_SOURCES = $(wildcard $(LIBARENA)/src/*.bpf.c) $(wildcard $(LIBARENA)/selftests/*.bpf.c)
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LIBARENA_OBJECTS = $(notdir $(LIBARENA_SOURCES:.bpf.c=.bpf.o))
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LIBARENA_OBJECTS_ASAN = $(notdir $(LIBARENA_SOURCES:.bpf.c=_asan.bpf.o))
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INCLUDES = -I$(LIBARENA)/include -I$(BPFDIR)
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ifneq ($(INCLUDE_DIR),)
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INCLUDES += -I$(INCLUDE_DIR)
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endif
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ifneq ($(LIBBPF_INCLUDE),)
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INCLUDES += -I$(LIBBPF_INCLUDE)
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endif
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ASAN_FLAGS = -fsanitize=kernel-address -fno-stack-protector -fno-builtin
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ASAN_FLAGS += -mllvm -asan-instrument-address-spaces=1 -mllvm -asan-shadow-addr-space=1
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ASAN_FLAGS += -mllvm -asan-use-stack-safety=0 -mllvm -asan-stack=0
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ASAN_FLAGS += -mllvm -asan-kernel=1
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ASAN_FLAGS += -mllvm -asan-constructor-kind=none
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ASAN_FLAGS += -mllvm -asan-destructor-kind=none
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# ENABLE_ATOMICS_TESTS required because we use arena spinlocks
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override BPF_CFLAGS += -DENABLE_ATOMICS_TESTS
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override BPF_CFLAGS += -O2 -g
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override BPF_CFLAGS += -Wno-incompatible-pointer-types-discards-qualifiers
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# Required for suppressing harmless vmlinux.h-related warnings.
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override BPF_CFLAGS += -Wno-missing-declarations
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override BPF_CFLAGS += $(INCLUDES)
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CFLAGS = -O2 -no-pie
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CFLAGS += $(INCLUDES)
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vpath %.bpf.c $(LIBARENA)/src $(LIBARENA)/selftests
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vpath %.c $(LIBARENA)/src $(LIBARENA)/selftests
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skeletons: libarena.skel.h libarena_asan.skel.h
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.PHONY: skeletons
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libarena_asan.skel.h: libarena_asan.bpf.o
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$(call msg,GEN-SKEL,libarena,$@)
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$(Q)$(BPFTOOL) gen skeleton $< name "libarena_asan" > $@
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libarena.skel.h: libarena.bpf.o
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$(call msg,GEN-SKEL,libarena,$@)
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$(Q)$(BPFTOOL) gen skeleton $< name "libarena" > $@
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libarena_asan.bpf.o: $(LIBARENA_OBJECTS_ASAN)
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$(call msg,GEN-OBJ,libarena,$@)
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$(Q)$(BPFTOOL) gen object $@ $^
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libarena.bpf.o: $(LIBARENA_OBJECTS)
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$(call msg,GEN-OBJ,libarena,$@)
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$(Q)$(BPFTOOL) gen object $@ $^
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%_asan.bpf.o: %.bpf.c
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$(call msg,CLNG-BPF,libarena,$@)
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$(Q)$(CLANG) $(BPF_CFLAGS) $(ASAN_FLAGS) -DBPF_ARENA_ASAN $(BPF_TARGET_ENDIAN) -c $< -o $@
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%.bpf.o: %.bpf.c
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$(call msg,CLNG-BPF,libarena,$@)
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$(Q)$(CLANG) $(BPF_CFLAGS) $(BPF_TARGET_ENDIAN) -c $< -o $@
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clean:
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$(Q)rm -f *.skel.h *.bpf.o *.linked*.o
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