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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-26 17:35:17 +07:00
3a0d3092a4
Ensure runqslower tool is built as part of selftests to prevent it from bit rotting. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200113073143.1779940-7-andriin@fb.com
81 lines
2.1 KiB
Makefile
81 lines
2.1 KiB
Makefile
# SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
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OUTPUT := .output
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CLANG := clang
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LLC := llc
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LLVM_STRIP := llvm-strip
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DEFAULT_BPFTOOL := $(OUTPUT)/sbin/bpftool
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BPFTOOL ?= $(DEFAULT_BPFTOOL)
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LIBBPF_SRC := $(abspath ../../lib/bpf)
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CFLAGS := -g -Wall
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# Try to detect best kernel BTF source
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KERNEL_REL := $(shell uname -r)
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ifneq ("$(wildcard /sys/kernel/btf/vmlinux)","")
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VMLINUX_BTF := /sys/kernel/btf/vmlinux
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else ifneq ("$(wildcard /boot/vmlinux-$(KERNEL_REL))","")
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VMLINUX_BTF := /boot/vmlinux-$(KERNEL_REL)
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else
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$(error "Can't detect kernel BTF, use VMLINUX_BTF to specify it explicitly")
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endif
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abs_out := $(abspath $(OUTPUT))
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ifeq ($(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\n' "$(1)" "$(notdir $(2))" "$(if $(3), $(3))";
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MAKEFLAGS += --no-print-directory
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submake_extras := feature_display=0
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endif
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.DELETE_ON_ERROR:
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.PHONY: all clean runqslower
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all: runqslower
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runqslower: $(OUTPUT)/runqslower
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clean:
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$(call msg,CLEAN)
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$(Q)rm -rf $(OUTPUT) runqslower
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$(OUTPUT)/runqslower: $(OUTPUT)/runqslower.o $(OUTPUT)/libbpf.a
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$(call msg,BINARY,$@)
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$(Q)$(CC) $(CFLAGS) -lelf -lz $^ -o $@
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$(OUTPUT)/runqslower.o: runqslower.h $(OUTPUT)/runqslower.skel.h \
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$(OUTPUT)/runqslower.bpf.o
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$(OUTPUT)/runqslower.bpf.o: $(OUTPUT)/vmlinux.h runqslower.h
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$(OUTPUT)/%.skel.h: $(OUTPUT)/%.bpf.o | $(BPFTOOL)
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$(call msg,GEN-SKEL,$@)
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$(Q)$(BPFTOOL) gen skeleton $< > $@
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$(OUTPUT)/%.bpf.o: %.bpf.c $(OUTPUT)/libbpf.a | $(OUTPUT)
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$(call msg,BPF,$@)
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$(Q)$(CLANG) -g -O2 -target bpf -I$(OUTPUT) -I$(LIBBPF_SRC) \
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-c $(filter %.c,$^) -o $@ && \
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$(LLVM_STRIP) -g $@
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$(OUTPUT)/%.o: %.c | $(OUTPUT)
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$(call msg,CC,$@)
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$(Q)$(CC) $(CFLAGS) -I$(LIBBPF_SRC) -I$(OUTPUT) -c $(filter %.c,$^) -o $@
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$(OUTPUT):
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$(call msg,MKDIR,$@)
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$(Q)mkdir -p $(OUTPUT)
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$(OUTPUT)/vmlinux.h: $(VMLINUX_BTF) | $(OUTPUT) $(BPFTOOL)
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$(call msg,GEN,$@)
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$(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@
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$(OUTPUT)/libbpf.a: | $(OUTPUT)
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$(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) \
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OUTPUT=$(abs_out)/ $(abs_out)/libbpf.a
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$(DEFAULT_BPFTOOL):
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$(Q)$(MAKE) $(submake_extras) -C ../bpftool \
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prefix= OUTPUT=$(abs_out)/ DESTDIR=$(abs_out) install
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