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- # SPDX-License-Identifier: GPL-2.0
- BPF_SAMPLES_PATH ?= $(abspath $(srctree)/$(src))
- TOOLS_PATH := $(BPF_SAMPLES_PATH)/../../tools
- # List of programs to build
- tprogs-y := test_lru_dist
- tprogs-y += sock_example
- tprogs-y += fds_example
- tprogs-y += sockex1
- tprogs-y += sockex2
- tprogs-y += sockex3
- tprogs-y += tracex1
- tprogs-y += tracex2
- tprogs-y += tracex3
- tprogs-y += tracex4
- tprogs-y += tracex5
- tprogs-y += tracex6
- tprogs-y += tracex7
- tprogs-y += test_probe_write_user
- tprogs-y += trace_output
- tprogs-y += lathist
- tprogs-y += offwaketime
- tprogs-y += spintest
- tprogs-y += map_perf_test
- tprogs-y += test_overhead
- tprogs-y += test_cgrp2_array_pin
- tprogs-y += test_cgrp2_attach
- tprogs-y += test_cgrp2_sock
- tprogs-y += test_cgrp2_sock2
- tprogs-y += xdp1
- tprogs-y += xdp2
- tprogs-y += xdp_router_ipv4
- tprogs-y += test_current_task_under_cgroup
- tprogs-y += trace_event
- tprogs-y += sampleip
- tprogs-y += tc_l2_redirect
- tprogs-y += lwt_len_hist
- tprogs-y += xdp_tx_iptunnel
- tprogs-y += test_map_in_map
- tprogs-y += per_socket_stats_example
- tprogs-y += xdp_redirect
- tprogs-y += xdp_redirect_map
- tprogs-y += xdp_redirect_cpu
- tprogs-y += xdp_monitor
- tprogs-y += xdp_rxq_info
- tprogs-y += syscall_tp
- tprogs-y += cpustat
- tprogs-y += xdp_adjust_tail
- tprogs-y += xdpsock
- tprogs-y += xsk_fwd
- tprogs-y += xdp_fwd
- tprogs-y += task_fd_query
- tprogs-y += xdp_sample_pkts
- tprogs-y += ibumad
- tprogs-y += hbm
- # Libbpf dependencies
- LIBBPF = $(TOOLS_PATH)/lib/bpf/libbpf.a
- CGROUP_HELPERS := ../../tools/testing/selftests/bpf/cgroup_helpers.o
- TRACE_HELPERS := ../../tools/testing/selftests/bpf/trace_helpers.o
- fds_example-objs := fds_example.o
- sockex1-objs := sockex1_user.o
- sockex2-objs := sockex2_user.o
- sockex3-objs := sockex3_user.o
- tracex1-objs := tracex1_user.o $(TRACE_HELPERS)
- tracex2-objs := tracex2_user.o
- tracex3-objs := tracex3_user.o
- tracex4-objs := tracex4_user.o
- tracex5-objs := tracex5_user.o $(TRACE_HELPERS)
- tracex6-objs := tracex6_user.o
- tracex7-objs := tracex7_user.o
- test_probe_write_user-objs := test_probe_write_user_user.o
- trace_output-objs := trace_output_user.o $(TRACE_HELPERS)
- lathist-objs := lathist_user.o
- offwaketime-objs := offwaketime_user.o $(TRACE_HELPERS)
- spintest-objs := spintest_user.o $(TRACE_HELPERS)
- map_perf_test-objs := map_perf_test_user.o
- test_overhead-objs := bpf_load.o test_overhead_user.o
- test_cgrp2_array_pin-objs := test_cgrp2_array_pin.o
- test_cgrp2_attach-objs := test_cgrp2_attach.o
- test_cgrp2_sock-objs := test_cgrp2_sock.o
- test_cgrp2_sock2-objs := bpf_load.o test_cgrp2_sock2.o
- xdp1-objs := xdp1_user.o
- # reuse xdp1 source intentionally
- xdp2-objs := xdp1_user.o
- xdp_router_ipv4-objs := xdp_router_ipv4_user.o
- test_current_task_under_cgroup-objs := $(CGROUP_HELPERS) \
- test_current_task_under_cgroup_user.o
- trace_event-objs := trace_event_user.o $(TRACE_HELPERS)
- sampleip-objs := sampleip_user.o $(TRACE_HELPERS)
- tc_l2_redirect-objs := bpf_load.o tc_l2_redirect_user.o
- lwt_len_hist-objs := bpf_load.o lwt_len_hist_user.o
- xdp_tx_iptunnel-objs := xdp_tx_iptunnel_user.o
- test_map_in_map-objs := test_map_in_map_user.o
- per_socket_stats_example-objs := cookie_uid_helper_example.o
- xdp_redirect-objs := xdp_redirect_user.o
- xdp_redirect_map-objs := xdp_redirect_map_user.o
- xdp_redirect_cpu-objs := xdp_redirect_cpu_user.o
- xdp_monitor-objs := xdp_monitor_user.o
- xdp_rxq_info-objs := xdp_rxq_info_user.o
- syscall_tp-objs := syscall_tp_user.o
- cpustat-objs := cpustat_user.o
- xdp_adjust_tail-objs := xdp_adjust_tail_user.o
- xdpsock-objs := xdpsock_user.o
- xsk_fwd-objs := xsk_fwd.o
- xdp_fwd-objs := xdp_fwd_user.o
- task_fd_query-objs := bpf_load.o task_fd_query_user.o $(TRACE_HELPERS)
- xdp_sample_pkts-objs := xdp_sample_pkts_user.o $(TRACE_HELPERS)
- ibumad-objs := bpf_load.o ibumad_user.o $(TRACE_HELPERS)
- hbm-objs := bpf_load.o hbm.o $(CGROUP_HELPERS)
- # Tell kbuild to always build the programs
- always-y := $(tprogs-y)
- always-y += sockex1_kern.o
- always-y += sockex2_kern.o
- always-y += sockex3_kern.o
- always-y += tracex1_kern.o
- always-y += tracex2_kern.o
- always-y += tracex3_kern.o
- always-y += tracex4_kern.o
- always-y += tracex5_kern.o
- always-y += tracex6_kern.o
- always-y += tracex7_kern.o
- always-y += sock_flags_kern.o
- always-y += test_probe_write_user_kern.o
- always-y += trace_output_kern.o
- always-y += tcbpf1_kern.o
- always-y += tc_l2_redirect_kern.o
- always-y += lathist_kern.o
- always-y += offwaketime_kern.o
- always-y += spintest_kern.o
- always-y += map_perf_test_kern.o
- always-y += test_overhead_tp_kern.o
- always-y += test_overhead_raw_tp_kern.o
- always-y += test_overhead_kprobe_kern.o
- always-y += parse_varlen.o parse_simple.o parse_ldabs.o
- always-y += test_cgrp2_tc_kern.o
- always-y += xdp1_kern.o
- always-y += xdp2_kern.o
- always-y += xdp_router_ipv4_kern.o
- always-y += test_current_task_under_cgroup_kern.o
- always-y += trace_event_kern.o
- always-y += sampleip_kern.o
- always-y += lwt_len_hist_kern.o
- always-y += xdp_tx_iptunnel_kern.o
- always-y += test_map_in_map_kern.o
- always-y += tcp_synrto_kern.o
- always-y += tcp_rwnd_kern.o
- always-y += tcp_bufs_kern.o
- always-y += tcp_cong_kern.o
- always-y += tcp_iw_kern.o
- always-y += tcp_clamp_kern.o
- always-y += tcp_basertt_kern.o
- always-y += tcp_tos_reflect_kern.o
- always-y += tcp_dumpstats_kern.o
- always-y += xdp_redirect_kern.o
- always-y += xdp_redirect_map_kern.o
- always-y += xdp_redirect_cpu_kern.o
- always-y += xdp_monitor_kern.o
- always-y += xdp_rxq_info_kern.o
- always-y += xdp2skb_meta_kern.o
- always-y += syscall_tp_kern.o
- always-y += cpustat_kern.o
- always-y += xdp_adjust_tail_kern.o
- always-y += xdp_fwd_kern.o
- always-y += task_fd_query_kern.o
- always-y += xdp_sample_pkts_kern.o
- always-y += ibumad_kern.o
- always-y += hbm_out_kern.o
- always-y += hbm_edt_kern.o
- always-y += xdpsock_kern.o
- ifeq ($(ARCH), arm)
- # Strip all except -D__LINUX_ARM_ARCH__ option needed to handle linux
- # headers when arm instruction set identification is requested.
- ARM_ARCH_SELECTOR := $(filter -D__LINUX_ARM_ARCH__%, $(KBUILD_CFLAGS))
- BPF_EXTRA_CFLAGS := $(ARM_ARCH_SELECTOR)
- TPROGS_CFLAGS += $(ARM_ARCH_SELECTOR)
- endif
- TPROGS_CFLAGS += -Wall -O2
- TPROGS_CFLAGS += -Wmissing-prototypes
- TPROGS_CFLAGS += -Wstrict-prototypes
- TPROGS_CFLAGS += -I$(objtree)/usr/include
- TPROGS_CFLAGS += -I$(srctree)/tools/testing/selftests/bpf/
- TPROGS_CFLAGS += -I$(srctree)/tools/lib/
- TPROGS_CFLAGS += -I$(srctree)/tools/include
- TPROGS_CFLAGS += -I$(srctree)/tools/perf
- TPROGS_CFLAGS += -DHAVE_ATTR_TEST=0
- ifdef SYSROOT
- TPROGS_CFLAGS += --sysroot=$(SYSROOT)
- TPROGS_LDFLAGS := -L$(SYSROOT)/usr/lib
- endif
- TPROGCFLAGS_bpf_load.o += -Wno-unused-variable
- TPROGS_LDLIBS += $(LIBBPF) -lelf -lz
- TPROGLDLIBS_tracex4 += -lrt
- TPROGLDLIBS_trace_output += -lrt
- TPROGLDLIBS_map_perf_test += -lrt
- TPROGLDLIBS_test_overhead += -lrt
- TPROGLDLIBS_xdpsock += -pthread
- TPROGLDLIBS_xsk_fwd += -pthread
- # Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline:
- # make M=samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang
- LLC ?= llc
- CLANG ?= clang
- OPT ?= opt
- LLVM_DIS ?= llvm-dis
- LLVM_OBJCOPY ?= llvm-objcopy
- BTF_PAHOLE ?= pahole
- # Detect that we're cross compiling and use the cross compiler
- ifdef CROSS_COMPILE
- CLANG_ARCH_ARGS = --target=$(notdir $(CROSS_COMPILE:%-=%))
- endif
- # Don't evaluate probes and warnings if we need to run make recursively
- ifneq ($(src),)
- HDR_PROBE := $(shell printf "\#include <linux/types.h>\n struct list_head { int a; }; int main() { return 0; }" | \
- $(CC) $(TPROGS_CFLAGS) $(TPROGS_LDFLAGS) -x c - \
- -o /dev/null 2>/dev/null && echo okay)
- ifeq ($(HDR_PROBE),)
- $(warning WARNING: Detected possible issues with include path.)
- $(warning WARNING: Please install kernel headers locally (make headers_install).)
- endif
- 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; }" | \
- $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \
- readelf -S ./llvm_btf_verify.o | grep BTF; \
- /bin/rm -f ./llvm_btf_verify.o)
- BPF_EXTRA_CFLAGS += -fno-stack-protector
- ifneq ($(BTF_LLVM_PROBE),)
- BPF_EXTRA_CFLAGS += -g
- else
- ifneq ($(and $(BTF_LLC_PROBE),$(BTF_PAHOLE_PROBE),$(BTF_OBJCOPY_PROBE)),)
- BPF_EXTRA_CFLAGS += -g
- LLC_FLAGS += -mattr=dwarfris
- DWARF2BTF = y
- endif
- endif
- endif
- # Trick to allow make to be run from this directory
- all:
- $(MAKE) -C ../../ M=$(CURDIR) BPF_SAMPLES_PATH=$(CURDIR)
- clean:
- $(MAKE) -C ../../ M=$(CURDIR) clean
- @find $(CURDIR) -type f -name '*~' -delete
- $(LIBBPF): FORCE
- # Fix up variables inherited from Kbuild that tools/ build system won't like
- $(MAKE) -C $(dir $@) RM='rm -rf' EXTRA_CFLAGS="$(TPROGS_CFLAGS)" \
- LDFLAGS=$(TPROGS_LDFLAGS) srctree=$(BPF_SAMPLES_PATH)/../../ O=
- $(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s FORCE
- $(call filechk,offsets,__SYSCALL_NRS_H__)
- targets += syscall_nrs.s
- clean-files += syscall_nrs.h
- FORCE:
- # Verify LLVM compiler tools are available and bpf target is supported by llc
- .PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC)
- verify_cmds: $(CLANG) $(LLC)
- @for TOOL in $^ ; do \
- if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \
- echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\
- exit 1; \
- else true; fi; \
- done
- verify_target_bpf: verify_cmds
- @if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \
- echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\
- echo " NOTICE: LLVM version >= 3.7.1 required" ;\
- exit 2; \
- else true; fi
- $(BPF_SAMPLES_PATH)/*.c: verify_target_bpf $(LIBBPF)
- $(src)/*.c: verify_target_bpf $(LIBBPF)
- $(obj)/tracex5_kern.o: $(obj)/syscall_nrs.h
- $(obj)/hbm_out_kern.o: $(src)/hbm.h $(src)/hbm_kern.h
- $(obj)/hbm.o: $(src)/hbm.h
- $(obj)/hbm_edt_kern.o: $(src)/hbm.h $(src)/hbm_kern.h
- -include $(BPF_SAMPLES_PATH)/Makefile.target
- # asm/sysreg.h - inline assembly used by it is incompatible with llvm.
- # But, there is no easy way to fix it, so just exclude it since it is
- # useless for BPF samples.
- # below we use long chain of commands, clang | opt | llvm-dis | llc,
- # to generate final object file. 'clang' compiles the source into IR
- # with native target, e.g., x64, arm64, etc. 'opt' does bpf CORE IR builtin
- # processing (llvm12) and IR optimizations. 'llvm-dis' converts
- # 'opt' output to IR, and finally 'llc' generates bpf byte code.
- $(obj)/%.o: $(src)/%.c
- @echo " CLANG-bpf " $@
- $(Q)$(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(BPF_EXTRA_CFLAGS) \
- -I$(obj) -I$(srctree)/tools/testing/selftests/bpf/ \
- -I$(srctree)/tools/lib/ \
- -D__KERNEL__ -D__BPF_TRACING__ -Wno-unused-value -Wno-pointer-sign \
- -D__TARGET_ARCH_$(SRCARCH) -Wno-compare-distinct-pointer-types \
- -Wno-gnu-variable-sized-type-not-at-end \
- -Wno-address-of-packed-member -Wno-tautological-compare \
- -Wno-unknown-warning-option $(CLANG_ARCH_ARGS) \
- -I$(srctree)/samples/bpf/ -include asm_goto_workaround.h \
- -O2 -emit-llvm -Xclang -disable-llvm-passes -c $< -o - | \
- $(OPT) -O2 -mtriple=bpf-pc-linux | $(LLVM_DIS) | \
- $(LLC) -march=bpf $(LLC_FLAGS) -filetype=obj -o $@
- ifeq ($(DWARF2BTF),y)
- $(BTF_PAHOLE) -J $@
- endif
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