samples/bpf/Makefile

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