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