1# kbuild trick to avoid linker error. Can be omitted if a module is built. 2obj- := dummy.o 3 4# List of programs to build 5hostprogs-y := test_lru_dist 6hostprogs-y += sock_example 7hostprogs-y += fds_example 8hostprogs-y += sockex1 9hostprogs-y += sockex2 10hostprogs-y += sockex3 11hostprogs-y += tracex1 12hostprogs-y += tracex2 13hostprogs-y += tracex3 14hostprogs-y += tracex4 15hostprogs-y += tracex5 16hostprogs-y += tracex6 17hostprogs-y += test_probe_write_user 18hostprogs-y += trace_output 19hostprogs-y += lathist 20hostprogs-y += offwaketime 21hostprogs-y += spintest 22hostprogs-y += map_perf_test 23hostprogs-y += test_overhead 24hostprogs-y += test_cgrp2_array_pin 25hostprogs-y += test_cgrp2_attach 26hostprogs-y += test_cgrp2_attach2 27hostprogs-y += test_cgrp2_sock 28hostprogs-y += test_cgrp2_sock2 29hostprogs-y += xdp1 30hostprogs-y += xdp2 31hostprogs-y += test_current_task_under_cgroup 32hostprogs-y += trace_event 33hostprogs-y += sampleip 34hostprogs-y += tc_l2_redirect 35hostprogs-y += lwt_len_hist 36hostprogs-y += xdp_tx_iptunnel 37 38# Libbpf dependencies 39LIBBPF := ../../tools/lib/bpf/bpf.o 40 41test_lru_dist-objs := test_lru_dist.o $(LIBBPF) 42sock_example-objs := sock_example.o $(LIBBPF) 43fds_example-objs := bpf_load.o $(LIBBPF) fds_example.o 44sockex1-objs := bpf_load.o $(LIBBPF) sockex1_user.o 45sockex2-objs := bpf_load.o $(LIBBPF) sockex2_user.o 46sockex3-objs := bpf_load.o $(LIBBPF) sockex3_user.o 47tracex1-objs := bpf_load.o $(LIBBPF) tracex1_user.o 48tracex2-objs := bpf_load.o $(LIBBPF) tracex2_user.o 49tracex3-objs := bpf_load.o $(LIBBPF) tracex3_user.o 50tracex4-objs := bpf_load.o $(LIBBPF) tracex4_user.o 51tracex5-objs := bpf_load.o $(LIBBPF) tracex5_user.o 52tracex6-objs := bpf_load.o $(LIBBPF) tracex6_user.o 53test_probe_write_user-objs := bpf_load.o $(LIBBPF) test_probe_write_user_user.o 54trace_output-objs := bpf_load.o $(LIBBPF) trace_output_user.o 55lathist-objs := bpf_load.o $(LIBBPF) lathist_user.o 56offwaketime-objs := bpf_load.o $(LIBBPF) offwaketime_user.o 57spintest-objs := bpf_load.o $(LIBBPF) spintest_user.o 58map_perf_test-objs := bpf_load.o $(LIBBPF) map_perf_test_user.o 59test_overhead-objs := bpf_load.o $(LIBBPF) test_overhead_user.o 60test_cgrp2_array_pin-objs := $(LIBBPF) test_cgrp2_array_pin.o 61test_cgrp2_attach-objs := $(LIBBPF) test_cgrp2_attach.o 62test_cgrp2_attach2-objs := $(LIBBPF) test_cgrp2_attach2.o cgroup_helpers.o 63test_cgrp2_sock-objs := $(LIBBPF) test_cgrp2_sock.o 64test_cgrp2_sock2-objs := bpf_load.o $(LIBBPF) test_cgrp2_sock2.o 65xdp1-objs := bpf_load.o $(LIBBPF) xdp1_user.o 66# reuse xdp1 source intentionally 67xdp2-objs := bpf_load.o $(LIBBPF) xdp1_user.o 68test_current_task_under_cgroup-objs := bpf_load.o $(LIBBPF) cgroup_helpers.o \ 69 test_current_task_under_cgroup_user.o 70trace_event-objs := bpf_load.o $(LIBBPF) trace_event_user.o 71sampleip-objs := bpf_load.o $(LIBBPF) sampleip_user.o 72tc_l2_redirect-objs := bpf_load.o $(LIBBPF) tc_l2_redirect_user.o 73lwt_len_hist-objs := bpf_load.o $(LIBBPF) lwt_len_hist_user.o 74xdp_tx_iptunnel-objs := bpf_load.o $(LIBBPF) xdp_tx_iptunnel_user.o 75 76# Tell kbuild to always build the programs 77always := $(hostprogs-y) 78always += sockex1_kern.o 79always += sockex2_kern.o 80always += sockex3_kern.o 81always += tracex1_kern.o 82always += tracex2_kern.o 83always += tracex3_kern.o 84always += tracex4_kern.o 85always += tracex5_kern.o 86always += tracex6_kern.o 87always += sock_flags_kern.o 88always += test_probe_write_user_kern.o 89always += trace_output_kern.o 90always += tcbpf1_kern.o 91always += tcbpf2_kern.o 92always += tc_l2_redirect_kern.o 93always += lathist_kern.o 94always += offwaketime_kern.o 95always += spintest_kern.o 96always += map_perf_test_kern.o 97always += test_overhead_tp_kern.o 98always += test_overhead_kprobe_kern.o 99always += parse_varlen.o parse_simple.o parse_ldabs.o 100always += test_cgrp2_tc_kern.o 101always += xdp1_kern.o 102always += xdp2_kern.o 103always += test_current_task_under_cgroup_kern.o 104always += trace_event_kern.o 105always += sampleip_kern.o 106always += lwt_len_hist_kern.o 107always += xdp_tx_iptunnel_kern.o 108 109HOSTCFLAGS += -I$(objtree)/usr/include 110HOSTCFLAGS += -I$(srctree)/tools/lib/ 111HOSTCFLAGS += -I$(srctree)/tools/testing/selftests/bpf/ 112HOSTCFLAGS += -I$(srctree)/tools/lib/ -I$(srctree)/tools/include 113HOSTCFLAGS += -I$(srctree)/tools/perf 114 115HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable 116HOSTLOADLIBES_fds_example += -lelf 117HOSTLOADLIBES_sockex1 += -lelf 118HOSTLOADLIBES_sockex2 += -lelf 119HOSTLOADLIBES_sockex3 += -lelf 120HOSTLOADLIBES_tracex1 += -lelf 121HOSTLOADLIBES_tracex2 += -lelf 122HOSTLOADLIBES_tracex3 += -lelf 123HOSTLOADLIBES_tracex4 += -lelf -lrt 124HOSTLOADLIBES_tracex5 += -lelf 125HOSTLOADLIBES_tracex6 += -lelf 126HOSTLOADLIBES_test_cgrp2_sock2 += -lelf 127HOSTLOADLIBES_test_probe_write_user += -lelf 128HOSTLOADLIBES_trace_output += -lelf -lrt 129HOSTLOADLIBES_lathist += -lelf 130HOSTLOADLIBES_offwaketime += -lelf 131HOSTLOADLIBES_spintest += -lelf 132HOSTLOADLIBES_map_perf_test += -lelf -lrt 133HOSTLOADLIBES_test_overhead += -lelf -lrt 134HOSTLOADLIBES_xdp1 += -lelf 135HOSTLOADLIBES_xdp2 += -lelf 136HOSTLOADLIBES_test_current_task_under_cgroup += -lelf 137HOSTLOADLIBES_trace_event += -lelf 138HOSTLOADLIBES_sampleip += -lelf 139HOSTLOADLIBES_tc_l2_redirect += -l elf 140HOSTLOADLIBES_lwt_len_hist += -l elf 141HOSTLOADLIBES_xdp_tx_iptunnel += -lelf 142 143# Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline: 144# make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang 145LLC ?= llc 146CLANG ?= clang 147 148# Trick to allow make to be run from this directory 149all: 150 $(MAKE) -C ../../ $(CURDIR)/ 151 152clean: 153 $(MAKE) -C ../../ M=$(CURDIR) clean 154 @rm -f *~ 155 156# Verify LLVM compiler tools are available and bpf target is supported by llc 157.PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC) 158 159verify_cmds: $(CLANG) $(LLC) 160 @for TOOL in $^ ; do \ 161 if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \ 162 echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\ 163 exit 1; \ 164 else true; fi; \ 165 done 166 167verify_target_bpf: verify_cmds 168 @if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \ 169 echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\ 170 echo " NOTICE: LLVM version >= 3.7.1 required" ;\ 171 exit 2; \ 172 else true; fi 173 174$(src)/*.c: verify_target_bpf 175 176# asm/sysreg.h - inline assembly used by it is incompatible with llvm. 177# But, there is no easy way to fix it, so just exclude it since it is 178# useless for BPF samples. 179$(obj)/%.o: $(src)/%.c 180 $(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) \ 181 -D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \ 182 -Wno-compare-distinct-pointer-types \ 183 -Wno-gnu-variable-sized-type-not-at-end \ 184 -Wno-address-of-packed-member -Wno-tautological-compare \ 185 -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@ 186