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 37hostprogs-y += test_map_in_map 38hostprogs-y += per_socket_stats_example 39hostprogs-y += load_sock_ops 40hostprogs-y += xdp_redirect 41hostprogs-y += xdp_redirect_map 42hostprogs-y += xdp_monitor 43hostprogs-y += syscall_tp 44 45# Libbpf dependencies 46LIBBPF := ../../tools/lib/bpf/bpf.o 47 48test_lru_dist-objs := test_lru_dist.o $(LIBBPF) 49sock_example-objs := sock_example.o $(LIBBPF) 50fds_example-objs := bpf_load.o $(LIBBPF) fds_example.o 51sockex1-objs := bpf_load.o $(LIBBPF) sockex1_user.o 52sockex2-objs := bpf_load.o $(LIBBPF) sockex2_user.o 53sockex3-objs := bpf_load.o $(LIBBPF) sockex3_user.o 54tracex1-objs := bpf_load.o $(LIBBPF) tracex1_user.o 55tracex2-objs := bpf_load.o $(LIBBPF) tracex2_user.o 56tracex3-objs := bpf_load.o $(LIBBPF) tracex3_user.o 57tracex4-objs := bpf_load.o $(LIBBPF) tracex4_user.o 58tracex5-objs := bpf_load.o $(LIBBPF) tracex5_user.o 59tracex6-objs := bpf_load.o $(LIBBPF) tracex6_user.o 60load_sock_ops-objs := bpf_load.o $(LIBBPF) load_sock_ops.o 61test_probe_write_user-objs := bpf_load.o $(LIBBPF) test_probe_write_user_user.o 62trace_output-objs := bpf_load.o $(LIBBPF) trace_output_user.o 63lathist-objs := bpf_load.o $(LIBBPF) lathist_user.o 64offwaketime-objs := bpf_load.o $(LIBBPF) offwaketime_user.o 65spintest-objs := bpf_load.o $(LIBBPF) spintest_user.o 66map_perf_test-objs := bpf_load.o $(LIBBPF) map_perf_test_user.o 67test_overhead-objs := bpf_load.o $(LIBBPF) test_overhead_user.o 68test_cgrp2_array_pin-objs := $(LIBBPF) test_cgrp2_array_pin.o 69test_cgrp2_attach-objs := $(LIBBPF) test_cgrp2_attach.o 70test_cgrp2_attach2-objs := $(LIBBPF) test_cgrp2_attach2.o cgroup_helpers.o 71test_cgrp2_sock-objs := $(LIBBPF) test_cgrp2_sock.o 72test_cgrp2_sock2-objs := bpf_load.o $(LIBBPF) test_cgrp2_sock2.o 73xdp1-objs := bpf_load.o $(LIBBPF) xdp1_user.o 74# reuse xdp1 source intentionally 75xdp2-objs := bpf_load.o $(LIBBPF) xdp1_user.o 76test_current_task_under_cgroup-objs := bpf_load.o $(LIBBPF) cgroup_helpers.o \ 77 test_current_task_under_cgroup_user.o 78trace_event-objs := bpf_load.o $(LIBBPF) trace_event_user.o 79sampleip-objs := bpf_load.o $(LIBBPF) sampleip_user.o 80tc_l2_redirect-objs := bpf_load.o $(LIBBPF) tc_l2_redirect_user.o 81lwt_len_hist-objs := bpf_load.o $(LIBBPF) lwt_len_hist_user.o 82xdp_tx_iptunnel-objs := bpf_load.o $(LIBBPF) xdp_tx_iptunnel_user.o 83test_map_in_map-objs := bpf_load.o $(LIBBPF) test_map_in_map_user.o 84per_socket_stats_example-objs := $(LIBBPF) cookie_uid_helper_example.o 85xdp_redirect-objs := bpf_load.o $(LIBBPF) xdp_redirect_user.o 86xdp_redirect_map-objs := bpf_load.o $(LIBBPF) xdp_redirect_map_user.o 87xdp_monitor-objs := bpf_load.o $(LIBBPF) xdp_monitor_user.o 88syscall_tp-objs := bpf_load.o $(LIBBPF) syscall_tp_user.o 89 90# Tell kbuild to always build the programs 91always := $(hostprogs-y) 92always += sockex1_kern.o 93always += sockex2_kern.o 94always += sockex3_kern.o 95always += tracex1_kern.o 96always += tracex2_kern.o 97always += tracex3_kern.o 98always += tracex4_kern.o 99always += tracex5_kern.o 100always += tracex6_kern.o 101always += sock_flags_kern.o 102always += test_probe_write_user_kern.o 103always += trace_output_kern.o 104always += tcbpf1_kern.o 105always += tcbpf2_kern.o 106always += tc_l2_redirect_kern.o 107always += lathist_kern.o 108always += offwaketime_kern.o 109always += spintest_kern.o 110always += map_perf_test_kern.o 111always += test_overhead_tp_kern.o 112always += test_overhead_kprobe_kern.o 113always += parse_varlen.o parse_simple.o parse_ldabs.o 114always += test_cgrp2_tc_kern.o 115always += xdp1_kern.o 116always += xdp2_kern.o 117always += test_current_task_under_cgroup_kern.o 118always += trace_event_kern.o 119always += sampleip_kern.o 120always += lwt_len_hist_kern.o 121always += xdp_tx_iptunnel_kern.o 122always += test_map_in_map_kern.o 123always += cookie_uid_helper_example.o 124always += tcp_synrto_kern.o 125always += tcp_rwnd_kern.o 126always += tcp_bufs_kern.o 127always += tcp_cong_kern.o 128always += tcp_iw_kern.o 129always += tcp_clamp_kern.o 130always += xdp_redirect_kern.o 131always += xdp_redirect_map_kern.o 132always += xdp_monitor_kern.o 133always += syscall_tp_kern.o 134 135HOSTCFLAGS += -I$(objtree)/usr/include 136HOSTCFLAGS += -I$(srctree)/tools/lib/ 137HOSTCFLAGS += -I$(srctree)/tools/testing/selftests/bpf/ 138HOSTCFLAGS += -I$(srctree)/tools/lib/ -I$(srctree)/tools/include 139HOSTCFLAGS += -I$(srctree)/tools/perf 140 141HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable 142HOSTLOADLIBES_fds_example += -lelf 143HOSTLOADLIBES_sockex1 += -lelf 144HOSTLOADLIBES_sockex2 += -lelf 145HOSTLOADLIBES_sockex3 += -lelf 146HOSTLOADLIBES_tracex1 += -lelf 147HOSTLOADLIBES_tracex2 += -lelf 148HOSTLOADLIBES_tracex3 += -lelf 149HOSTLOADLIBES_tracex4 += -lelf -lrt 150HOSTLOADLIBES_tracex5 += -lelf 151HOSTLOADLIBES_tracex6 += -lelf 152HOSTLOADLIBES_test_cgrp2_sock2 += -lelf 153HOSTLOADLIBES_load_sock_ops += -lelf 154HOSTLOADLIBES_test_probe_write_user += -lelf 155HOSTLOADLIBES_trace_output += -lelf -lrt 156HOSTLOADLIBES_lathist += -lelf 157HOSTLOADLIBES_offwaketime += -lelf 158HOSTLOADLIBES_spintest += -lelf 159HOSTLOADLIBES_map_perf_test += -lelf -lrt 160HOSTLOADLIBES_test_overhead += -lelf -lrt 161HOSTLOADLIBES_xdp1 += -lelf 162HOSTLOADLIBES_xdp2 += -lelf 163HOSTLOADLIBES_test_current_task_under_cgroup += -lelf 164HOSTLOADLIBES_trace_event += -lelf 165HOSTLOADLIBES_sampleip += -lelf 166HOSTLOADLIBES_tc_l2_redirect += -l elf 167HOSTLOADLIBES_lwt_len_hist += -l elf 168HOSTLOADLIBES_xdp_tx_iptunnel += -lelf 169HOSTLOADLIBES_test_map_in_map += -lelf 170HOSTLOADLIBES_xdp_redirect += -lelf 171HOSTLOADLIBES_xdp_redirect_map += -lelf 172HOSTLOADLIBES_xdp_monitor += -lelf 173HOSTLOADLIBES_syscall_tp += -lelf 174 175# Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline: 176# make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang 177LLC ?= llc 178CLANG ?= clang 179 180# Trick to allow make to be run from this directory 181all: 182 $(MAKE) -C ../../ $(CURDIR)/ 183 184clean: 185 $(MAKE) -C ../../ M=$(CURDIR) clean 186 @rm -f *~ 187 188$(obj)/syscall_nrs.s: $(src)/syscall_nrs.c 189 $(call if_changed_dep,cc_s_c) 190 191$(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s FORCE 192 $(call filechk,offsets,__SYSCALL_NRS_H__) 193 194clean-files += syscall_nrs.h 195 196FORCE: 197 198 199# Verify LLVM compiler tools are available and bpf target is supported by llc 200.PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC) 201 202verify_cmds: $(CLANG) $(LLC) 203 @for TOOL in $^ ; do \ 204 if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \ 205 echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\ 206 exit 1; \ 207 else true; fi; \ 208 done 209 210verify_target_bpf: verify_cmds 211 @if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \ 212 echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\ 213 echo " NOTICE: LLVM version >= 3.7.1 required" ;\ 214 exit 2; \ 215 else true; fi 216 217$(src)/*.c: verify_target_bpf 218 219$(obj)/tracex5_kern.o: $(obj)/syscall_nrs.h 220 221# asm/sysreg.h - inline assembly used by it is incompatible with llvm. 222# But, there is no easy way to fix it, so just exclude it since it is 223# useless for BPF samples. 224$(obj)/%.o: $(src)/%.c 225 $(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) -I$(obj) \ 226 -I$(srctree)/tools/testing/selftests/bpf/ \ 227 -D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \ 228 -Wno-compare-distinct-pointer-types \ 229 -Wno-gnu-variable-sized-type-not-at-end \ 230 -Wno-address-of-packed-member -Wno-tautological-compare \ 231 -Wno-unknown-warning-option \ 232 -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@ 233