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