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