1# SPDX-License-Identifier: GPL-2.0 2# kbuild trick to avoid linker error. Can be omitted if a module is built. 3obj- := dummy.o 4 5# List of programs to build 6hostprogs-y := test_lru_dist 7hostprogs-y += sock_example 8hostprogs-y += fds_example 9hostprogs-y += sockex1 10hostprogs-y += sockex2 11hostprogs-y += sockex3 12hostprogs-y += tracex1 13hostprogs-y += tracex2 14hostprogs-y += tracex3 15hostprogs-y += tracex4 16hostprogs-y += tracex5 17hostprogs-y += tracex6 18hostprogs-y += test_probe_write_user 19hostprogs-y += trace_output 20hostprogs-y += lathist 21hostprogs-y += offwaketime 22hostprogs-y += spintest 23hostprogs-y += map_perf_test 24hostprogs-y += test_overhead 25hostprogs-y += test_cgrp2_array_pin 26hostprogs-y += test_cgrp2_attach 27hostprogs-y += test_cgrp2_attach2 28hostprogs-y += test_cgrp2_sock 29hostprogs-y += test_cgrp2_sock2 30hostprogs-y += xdp1 31hostprogs-y += xdp2 32hostprogs-y += test_current_task_under_cgroup 33hostprogs-y += trace_event 34hostprogs-y += sampleip 35hostprogs-y += tc_l2_redirect 36hostprogs-y += lwt_len_hist 37hostprogs-y += xdp_tx_iptunnel 38hostprogs-y += test_map_in_map 39hostprogs-y += per_socket_stats_example 40hostprogs-y += load_sock_ops 41hostprogs-y += xdp_redirect 42hostprogs-y += xdp_redirect_map 43hostprogs-y += xdp_redirect_cpu 44hostprogs-y += xdp_monitor 45hostprogs-y += syscall_tp 46 47# Libbpf dependencies 48LIBBPF := ../../tools/lib/bpf/bpf.o 49CGROUP_HELPERS := ../../tools/testing/selftests/bpf/cgroup_helpers.o 50 51test_lru_dist-objs := test_lru_dist.o $(LIBBPF) 52sock_example-objs := sock_example.o $(LIBBPF) 53fds_example-objs := bpf_load.o $(LIBBPF) fds_example.o 54sockex1-objs := bpf_load.o $(LIBBPF) sockex1_user.o 55sockex2-objs := bpf_load.o $(LIBBPF) sockex2_user.o 56sockex3-objs := bpf_load.o $(LIBBPF) sockex3_user.o 57tracex1-objs := bpf_load.o $(LIBBPF) tracex1_user.o 58tracex2-objs := bpf_load.o $(LIBBPF) tracex2_user.o 59tracex3-objs := bpf_load.o $(LIBBPF) tracex3_user.o 60tracex4-objs := bpf_load.o $(LIBBPF) tracex4_user.o 61tracex5-objs := bpf_load.o $(LIBBPF) tracex5_user.o 62tracex6-objs := bpf_load.o $(LIBBPF) tracex6_user.o 63load_sock_ops-objs := bpf_load.o $(LIBBPF) load_sock_ops.o 64test_probe_write_user-objs := bpf_load.o $(LIBBPF) test_probe_write_user_user.o 65trace_output-objs := bpf_load.o $(LIBBPF) trace_output_user.o 66lathist-objs := bpf_load.o $(LIBBPF) lathist_user.o 67offwaketime-objs := bpf_load.o $(LIBBPF) offwaketime_user.o 68spintest-objs := bpf_load.o $(LIBBPF) spintest_user.o 69map_perf_test-objs := bpf_load.o $(LIBBPF) map_perf_test_user.o 70test_overhead-objs := bpf_load.o $(LIBBPF) test_overhead_user.o 71test_cgrp2_array_pin-objs := $(LIBBPF) test_cgrp2_array_pin.o 72test_cgrp2_attach-objs := $(LIBBPF) test_cgrp2_attach.o 73test_cgrp2_attach2-objs := $(LIBBPF) test_cgrp2_attach2.o $(CGROUP_HELPERS) 74test_cgrp2_sock-objs := $(LIBBPF) test_cgrp2_sock.o 75test_cgrp2_sock2-objs := bpf_load.o $(LIBBPF) test_cgrp2_sock2.o 76xdp1-objs := bpf_load.o $(LIBBPF) xdp1_user.o 77# reuse xdp1 source intentionally 78xdp2-objs := bpf_load.o $(LIBBPF) xdp1_user.o 79test_current_task_under_cgroup-objs := bpf_load.o $(LIBBPF) $(CGROUP_HELPERS) \ 80 test_current_task_under_cgroup_user.o 81trace_event-objs := bpf_load.o $(LIBBPF) trace_event_user.o 82sampleip-objs := bpf_load.o $(LIBBPF) sampleip_user.o 83tc_l2_redirect-objs := bpf_load.o $(LIBBPF) tc_l2_redirect_user.o 84lwt_len_hist-objs := bpf_load.o $(LIBBPF) lwt_len_hist_user.o 85xdp_tx_iptunnel-objs := bpf_load.o $(LIBBPF) xdp_tx_iptunnel_user.o 86test_map_in_map-objs := bpf_load.o $(LIBBPF) test_map_in_map_user.o 87per_socket_stats_example-objs := $(LIBBPF) cookie_uid_helper_example.o 88xdp_redirect-objs := bpf_load.o $(LIBBPF) xdp_redirect_user.o 89xdp_redirect_map-objs := bpf_load.o $(LIBBPF) xdp_redirect_map_user.o 90xdp_redirect_cpu-objs := bpf_load.o $(LIBBPF) xdp_redirect_cpu_user.o 91xdp_monitor-objs := bpf_load.o $(LIBBPF) xdp_monitor_user.o 92syscall_tp-objs := bpf_load.o $(LIBBPF) syscall_tp_user.o 93 94# Tell kbuild to always build the programs 95always := $(hostprogs-y) 96always += sockex1_kern.o 97always += sockex2_kern.o 98always += sockex3_kern.o 99always += tracex1_kern.o 100always += tracex2_kern.o 101always += tracex3_kern.o 102always += tracex4_kern.o 103always += tracex5_kern.o 104always += tracex6_kern.o 105always += sock_flags_kern.o 106always += test_probe_write_user_kern.o 107always += trace_output_kern.o 108always += tcbpf1_kern.o 109always += tcbpf2_kern.o 110always += tc_l2_redirect_kern.o 111always += lathist_kern.o 112always += offwaketime_kern.o 113always += spintest_kern.o 114always += map_perf_test_kern.o 115always += test_overhead_tp_kern.o 116always += test_overhead_kprobe_kern.o 117always += parse_varlen.o parse_simple.o parse_ldabs.o 118always += test_cgrp2_tc_kern.o 119always += xdp1_kern.o 120always += xdp2_kern.o 121always += test_current_task_under_cgroup_kern.o 122always += trace_event_kern.o 123always += sampleip_kern.o 124always += lwt_len_hist_kern.o 125always += xdp_tx_iptunnel_kern.o 126always += test_map_in_map_kern.o 127always += cookie_uid_helper_example.o 128always += tcp_synrto_kern.o 129always += tcp_rwnd_kern.o 130always += tcp_bufs_kern.o 131always += tcp_cong_kern.o 132always += tcp_iw_kern.o 133always += tcp_clamp_kern.o 134always += tcp_basertt_kern.o 135always += xdp_redirect_kern.o 136always += xdp_redirect_map_kern.o 137always += xdp_redirect_cpu_kern.o 138always += xdp_monitor_kern.o 139always += syscall_tp_kern.o 140 141HOSTCFLAGS += -I$(objtree)/usr/include 142HOSTCFLAGS += -I$(srctree)/tools/lib/ 143HOSTCFLAGS += -I$(srctree)/tools/testing/selftests/bpf/ 144HOSTCFLAGS += -I$(srctree)/tools/lib/ -I$(srctree)/tools/include 145HOSTCFLAGS += -I$(srctree)/tools/perf 146 147HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable 148HOSTLOADLIBES_fds_example += -lelf 149HOSTLOADLIBES_sockex1 += -lelf 150HOSTLOADLIBES_sockex2 += -lelf 151HOSTLOADLIBES_sockex3 += -lelf 152HOSTLOADLIBES_tracex1 += -lelf 153HOSTLOADLIBES_tracex2 += -lelf 154HOSTLOADLIBES_tracex3 += -lelf 155HOSTLOADLIBES_tracex4 += -lelf -lrt 156HOSTLOADLIBES_tracex5 += -lelf 157HOSTLOADLIBES_tracex6 += -lelf 158HOSTLOADLIBES_test_cgrp2_sock2 += -lelf 159HOSTLOADLIBES_load_sock_ops += -lelf 160HOSTLOADLIBES_test_probe_write_user += -lelf 161HOSTLOADLIBES_trace_output += -lelf -lrt 162HOSTLOADLIBES_lathist += -lelf 163HOSTLOADLIBES_offwaketime += -lelf 164HOSTLOADLIBES_spintest += -lelf 165HOSTLOADLIBES_map_perf_test += -lelf -lrt 166HOSTLOADLIBES_test_overhead += -lelf -lrt 167HOSTLOADLIBES_xdp1 += -lelf 168HOSTLOADLIBES_xdp2 += -lelf 169HOSTLOADLIBES_test_current_task_under_cgroup += -lelf 170HOSTLOADLIBES_trace_event += -lelf 171HOSTLOADLIBES_sampleip += -lelf 172HOSTLOADLIBES_tc_l2_redirect += -l elf 173HOSTLOADLIBES_lwt_len_hist += -l elf 174HOSTLOADLIBES_xdp_tx_iptunnel += -lelf 175HOSTLOADLIBES_test_map_in_map += -lelf 176HOSTLOADLIBES_xdp_redirect += -lelf 177HOSTLOADLIBES_xdp_redirect_map += -lelf 178HOSTLOADLIBES_xdp_redirect_cpu += -lelf 179HOSTLOADLIBES_xdp_monitor += -lelf 180HOSTLOADLIBES_syscall_tp += -lelf 181 182# Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline: 183# make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang 184LLC ?= llc 185CLANG ?= clang 186 187# Detect that we're cross compiling and use the cross compiler 188ifdef CROSS_COMPILE 189HOSTCC = $(CROSS_COMPILE)gcc 190CLANG_ARCH_ARGS = -target $(ARCH) 191endif 192 193# Trick to allow make to be run from this directory 194all: 195 $(MAKE) -C ../../ $(CURDIR)/ 196 197clean: 198 $(MAKE) -C ../../ M=$(CURDIR) clean 199 @rm -f *~ 200 201$(obj)/syscall_nrs.s: $(src)/syscall_nrs.c 202 $(call if_changed_dep,cc_s_c) 203 204$(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s FORCE 205 $(call filechk,offsets,__SYSCALL_NRS_H__) 206 207clean-files += syscall_nrs.h 208 209FORCE: 210 211 212# Verify LLVM compiler tools are available and bpf target is supported by llc 213.PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC) 214 215verify_cmds: $(CLANG) $(LLC) 216 @for TOOL in $^ ; do \ 217 if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \ 218 echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\ 219 exit 1; \ 220 else true; fi; \ 221 done 222 223verify_target_bpf: verify_cmds 224 @if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \ 225 echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\ 226 echo " NOTICE: LLVM version >= 3.7.1 required" ;\ 227 exit 2; \ 228 else true; fi 229 230$(src)/*.c: verify_target_bpf 231 232$(obj)/tracex5_kern.o: $(obj)/syscall_nrs.h 233 234# asm/sysreg.h - inline assembly used by it is incompatible with llvm. 235# But, there is no easy way to fix it, so just exclude it since it is 236# useless for BPF samples. 237$(obj)/%.o: $(src)/%.c 238 $(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) -I$(obj) \ 239 -I$(srctree)/tools/testing/selftests/bpf/ \ 240 -D__KERNEL__ -Wno-unused-value -Wno-pointer-sign \ 241 -D__TARGET_ARCH_$(ARCH) -Wno-compare-distinct-pointer-types \ 242 -Wno-gnu-variable-sized-type-not-at-end \ 243 -Wno-address-of-packed-member -Wno-tautological-compare \ 244 -Wno-unknown-warning-option $(CLANG_ARCH_ARGS) \ 245 -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@ 246