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