Makefile 11 KB

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  1. # SPDX-License-Identifier: GPL-2.0
  2. BPF_SAMPLES_PATH ?= $(abspath $(srctree)/$(src))
  3. TOOLS_PATH := $(BPF_SAMPLES_PATH)/../../tools
  4. # List of programs to build
  5. tprogs-y := test_lru_dist
  6. tprogs-y += sock_example
  7. tprogs-y += fds_example
  8. tprogs-y += sockex1
  9. tprogs-y += sockex2
  10. tprogs-y += sockex3
  11. tprogs-y += tracex1
  12. tprogs-y += tracex2
  13. tprogs-y += tracex3
  14. tprogs-y += tracex4
  15. tprogs-y += tracex5
  16. tprogs-y += tracex6
  17. tprogs-y += tracex7
  18. tprogs-y += test_probe_write_user
  19. tprogs-y += trace_output
  20. tprogs-y += lathist
  21. tprogs-y += offwaketime
  22. tprogs-y += spintest
  23. tprogs-y += map_perf_test
  24. tprogs-y += test_overhead
  25. tprogs-y += test_cgrp2_array_pin
  26. tprogs-y += test_cgrp2_attach
  27. tprogs-y += test_cgrp2_sock
  28. tprogs-y += test_cgrp2_sock2
  29. tprogs-y += xdp1
  30. tprogs-y += xdp2
  31. tprogs-y += xdp_router_ipv4
  32. tprogs-y += test_current_task_under_cgroup
  33. tprogs-y += trace_event
  34. tprogs-y += sampleip
  35. tprogs-y += tc_l2_redirect
  36. tprogs-y += lwt_len_hist
  37. tprogs-y += xdp_tx_iptunnel
  38. tprogs-y += test_map_in_map
  39. tprogs-y += per_socket_stats_example
  40. tprogs-y += xdp_redirect
  41. tprogs-y += xdp_redirect_map
  42. tprogs-y += xdp_redirect_cpu
  43. tprogs-y += xdp_monitor
  44. tprogs-y += xdp_rxq_info
  45. tprogs-y += syscall_tp
  46. tprogs-y += cpustat
  47. tprogs-y += xdp_adjust_tail
  48. tprogs-y += xdpsock
  49. tprogs-y += xsk_fwd
  50. tprogs-y += xdp_fwd
  51. tprogs-y += task_fd_query
  52. tprogs-y += xdp_sample_pkts
  53. tprogs-y += ibumad
  54. tprogs-y += hbm
  55. # Libbpf dependencies
  56. LIBBPF = $(TOOLS_PATH)/lib/bpf/libbpf.a
  57. CGROUP_HELPERS := ../../tools/testing/selftests/bpf/cgroup_helpers.o
  58. TRACE_HELPERS := ../../tools/testing/selftests/bpf/trace_helpers.o
  59. fds_example-objs := fds_example.o
  60. sockex1-objs := sockex1_user.o
  61. sockex2-objs := sockex2_user.o
  62. sockex3-objs := sockex3_user.o
  63. tracex1-objs := tracex1_user.o $(TRACE_HELPERS)
  64. tracex2-objs := tracex2_user.o
  65. tracex3-objs := tracex3_user.o
  66. tracex4-objs := tracex4_user.o
  67. tracex5-objs := tracex5_user.o $(TRACE_HELPERS)
  68. tracex6-objs := tracex6_user.o
  69. tracex7-objs := tracex7_user.o
  70. test_probe_write_user-objs := test_probe_write_user_user.o
  71. trace_output-objs := trace_output_user.o $(TRACE_HELPERS)
  72. lathist-objs := lathist_user.o
  73. offwaketime-objs := offwaketime_user.o $(TRACE_HELPERS)
  74. spintest-objs := spintest_user.o $(TRACE_HELPERS)
  75. map_perf_test-objs := map_perf_test_user.o
  76. test_overhead-objs := bpf_load.o test_overhead_user.o
  77. test_cgrp2_array_pin-objs := test_cgrp2_array_pin.o
  78. test_cgrp2_attach-objs := test_cgrp2_attach.o
  79. test_cgrp2_sock-objs := test_cgrp2_sock.o
  80. test_cgrp2_sock2-objs := bpf_load.o test_cgrp2_sock2.o
  81. xdp1-objs := xdp1_user.o
  82. # reuse xdp1 source intentionally
  83. xdp2-objs := xdp1_user.o
  84. xdp_router_ipv4-objs := xdp_router_ipv4_user.o
  85. test_current_task_under_cgroup-objs := $(CGROUP_HELPERS) \
  86. test_current_task_under_cgroup_user.o
  87. trace_event-objs := trace_event_user.o $(TRACE_HELPERS)
  88. sampleip-objs := sampleip_user.o $(TRACE_HELPERS)
  89. tc_l2_redirect-objs := bpf_load.o tc_l2_redirect_user.o
  90. lwt_len_hist-objs := bpf_load.o lwt_len_hist_user.o
  91. xdp_tx_iptunnel-objs := xdp_tx_iptunnel_user.o
  92. test_map_in_map-objs := test_map_in_map_user.o
  93. per_socket_stats_example-objs := cookie_uid_helper_example.o
  94. xdp_redirect-objs := xdp_redirect_user.o
  95. xdp_redirect_map-objs := xdp_redirect_map_user.o
  96. xdp_redirect_cpu-objs := xdp_redirect_cpu_user.o
  97. xdp_monitor-objs := xdp_monitor_user.o
  98. xdp_rxq_info-objs := xdp_rxq_info_user.o
  99. syscall_tp-objs := syscall_tp_user.o
  100. cpustat-objs := cpustat_user.o
  101. xdp_adjust_tail-objs := xdp_adjust_tail_user.o
  102. xdpsock-objs := xdpsock_user.o
  103. xsk_fwd-objs := xsk_fwd.o
  104. xdp_fwd-objs := xdp_fwd_user.o
  105. task_fd_query-objs := bpf_load.o task_fd_query_user.o $(TRACE_HELPERS)
  106. xdp_sample_pkts-objs := xdp_sample_pkts_user.o $(TRACE_HELPERS)
  107. ibumad-objs := bpf_load.o ibumad_user.o $(TRACE_HELPERS)
  108. hbm-objs := bpf_load.o hbm.o $(CGROUP_HELPERS)
  109. # Tell kbuild to always build the programs
  110. always-y := $(tprogs-y)
  111. always-y += sockex1_kern.o
  112. always-y += sockex2_kern.o
  113. always-y += sockex3_kern.o
  114. always-y += tracex1_kern.o
  115. always-y += tracex2_kern.o
  116. always-y += tracex3_kern.o
  117. always-y += tracex4_kern.o
  118. always-y += tracex5_kern.o
  119. always-y += tracex6_kern.o
  120. always-y += tracex7_kern.o
  121. always-y += sock_flags_kern.o
  122. always-y += test_probe_write_user_kern.o
  123. always-y += trace_output_kern.o
  124. always-y += tcbpf1_kern.o
  125. always-y += tc_l2_redirect_kern.o
  126. always-y += lathist_kern.o
  127. always-y += offwaketime_kern.o
  128. always-y += spintest_kern.o
  129. always-y += map_perf_test_kern.o
  130. always-y += test_overhead_tp_kern.o
  131. always-y += test_overhead_raw_tp_kern.o
  132. always-y += test_overhead_kprobe_kern.o
  133. always-y += parse_varlen.o parse_simple.o parse_ldabs.o
  134. always-y += test_cgrp2_tc_kern.o
  135. always-y += xdp1_kern.o
  136. always-y += xdp2_kern.o
  137. always-y += xdp_router_ipv4_kern.o
  138. always-y += test_current_task_under_cgroup_kern.o
  139. always-y += trace_event_kern.o
  140. always-y += sampleip_kern.o
  141. always-y += lwt_len_hist_kern.o
  142. always-y += xdp_tx_iptunnel_kern.o
  143. always-y += test_map_in_map_kern.o
  144. always-y += tcp_synrto_kern.o
  145. always-y += tcp_rwnd_kern.o
  146. always-y += tcp_bufs_kern.o
  147. always-y += tcp_cong_kern.o
  148. always-y += tcp_iw_kern.o
  149. always-y += tcp_clamp_kern.o
  150. always-y += tcp_basertt_kern.o
  151. always-y += tcp_tos_reflect_kern.o
  152. always-y += tcp_dumpstats_kern.o
  153. always-y += xdp_redirect_kern.o
  154. always-y += xdp_redirect_map_kern.o
  155. always-y += xdp_redirect_cpu_kern.o
  156. always-y += xdp_monitor_kern.o
  157. always-y += xdp_rxq_info_kern.o
  158. always-y += xdp2skb_meta_kern.o
  159. always-y += syscall_tp_kern.o
  160. always-y += cpustat_kern.o
  161. always-y += xdp_adjust_tail_kern.o
  162. always-y += xdp_fwd_kern.o
  163. always-y += task_fd_query_kern.o
  164. always-y += xdp_sample_pkts_kern.o
  165. always-y += ibumad_kern.o
  166. always-y += hbm_out_kern.o
  167. always-y += hbm_edt_kern.o
  168. always-y += xdpsock_kern.o
  169. ifeq ($(ARCH), arm)
  170. # Strip all except -D__LINUX_ARM_ARCH__ option needed to handle linux
  171. # headers when arm instruction set identification is requested.
  172. ARM_ARCH_SELECTOR := $(filter -D__LINUX_ARM_ARCH__%, $(KBUILD_CFLAGS))
  173. BPF_EXTRA_CFLAGS := $(ARM_ARCH_SELECTOR)
  174. TPROGS_CFLAGS += $(ARM_ARCH_SELECTOR)
  175. endif
  176. TPROGS_CFLAGS += -Wall -O2
  177. TPROGS_CFLAGS += -Wmissing-prototypes
  178. TPROGS_CFLAGS += -Wstrict-prototypes
  179. TPROGS_CFLAGS += -I$(objtree)/usr/include
  180. TPROGS_CFLAGS += -I$(srctree)/tools/testing/selftests/bpf/
  181. TPROGS_CFLAGS += -I$(srctree)/tools/lib/
  182. TPROGS_CFLAGS += -I$(srctree)/tools/include
  183. TPROGS_CFLAGS += -I$(srctree)/tools/perf
  184. TPROGS_CFLAGS += -DHAVE_ATTR_TEST=0
  185. ifdef SYSROOT
  186. TPROGS_CFLAGS += --sysroot=$(SYSROOT)
  187. TPROGS_LDFLAGS := -L$(SYSROOT)/usr/lib
  188. endif
  189. TPROGCFLAGS_bpf_load.o += -Wno-unused-variable
  190. TPROGS_LDLIBS += $(LIBBPF) -lelf -lz
  191. TPROGLDLIBS_tracex4 += -lrt
  192. TPROGLDLIBS_trace_output += -lrt
  193. TPROGLDLIBS_map_perf_test += -lrt
  194. TPROGLDLIBS_test_overhead += -lrt
  195. TPROGLDLIBS_xdpsock += -pthread
  196. TPROGLDLIBS_xsk_fwd += -pthread
  197. # Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline:
  198. # make M=samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang
  199. LLC ?= llc
  200. CLANG ?= clang
  201. OPT ?= opt
  202. LLVM_DIS ?= llvm-dis
  203. LLVM_OBJCOPY ?= llvm-objcopy
  204. BTF_PAHOLE ?= pahole
  205. # Detect that we're cross compiling and use the cross compiler
  206. ifdef CROSS_COMPILE
  207. CLANG_ARCH_ARGS = --target=$(notdir $(CROSS_COMPILE:%-=%))
  208. endif
  209. # Don't evaluate probes and warnings if we need to run make recursively
  210. ifneq ($(src),)
  211. HDR_PROBE := $(shell printf "\#include <linux/types.h>\n struct list_head { int a; }; int main() { return 0; }" | \
  212. $(CC) $(TPROGS_CFLAGS) $(TPROGS_LDFLAGS) -x c - \
  213. -o /dev/null 2>/dev/null && echo okay)
  214. ifeq ($(HDR_PROBE),)
  215. $(warning WARNING: Detected possible issues with include path.)
  216. $(warning WARNING: Please install kernel headers locally (make headers_install).)
  217. endif
  218. BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris)
  219. BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF)
  220. BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm')
  221. BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \
  222. $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \
  223. readelf -S ./llvm_btf_verify.o | grep BTF; \
  224. /bin/rm -f ./llvm_btf_verify.o)
  225. BPF_EXTRA_CFLAGS += -fno-stack-protector
  226. ifneq ($(BTF_LLVM_PROBE),)
  227. BPF_EXTRA_CFLAGS += -g
  228. else
  229. ifneq ($(and $(BTF_LLC_PROBE),$(BTF_PAHOLE_PROBE),$(BTF_OBJCOPY_PROBE)),)
  230. BPF_EXTRA_CFLAGS += -g
  231. LLC_FLAGS += -mattr=dwarfris
  232. DWARF2BTF = y
  233. endif
  234. endif
  235. endif
  236. # Trick to allow make to be run from this directory
  237. all:
  238. $(MAKE) -C ../../ M=$(CURDIR) BPF_SAMPLES_PATH=$(CURDIR)
  239. clean:
  240. $(MAKE) -C ../../ M=$(CURDIR) clean
  241. @find $(CURDIR) -type f -name '*~' -delete
  242. $(LIBBPF): FORCE
  243. # Fix up variables inherited from Kbuild that tools/ build system won't like
  244. $(MAKE) -C $(dir $@) RM='rm -rf' EXTRA_CFLAGS="$(TPROGS_CFLAGS)" \
  245. LDFLAGS=$(TPROGS_LDFLAGS) srctree=$(BPF_SAMPLES_PATH)/../../ O=
  246. $(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s FORCE
  247. $(call filechk,offsets,__SYSCALL_NRS_H__)
  248. targets += syscall_nrs.s
  249. clean-files += syscall_nrs.h
  250. FORCE:
  251. # Verify LLVM compiler tools are available and bpf target is supported by llc
  252. .PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC)
  253. verify_cmds: $(CLANG) $(LLC)
  254. @for TOOL in $^ ; do \
  255. if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \
  256. echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\
  257. exit 1; \
  258. else true; fi; \
  259. done
  260. verify_target_bpf: verify_cmds
  261. @if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \
  262. echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\
  263. echo " NOTICE: LLVM version >= 3.7.1 required" ;\
  264. exit 2; \
  265. else true; fi
  266. $(BPF_SAMPLES_PATH)/*.c: verify_target_bpf $(LIBBPF)
  267. $(src)/*.c: verify_target_bpf $(LIBBPF)
  268. $(obj)/tracex5_kern.o: $(obj)/syscall_nrs.h
  269. $(obj)/hbm_out_kern.o: $(src)/hbm.h $(src)/hbm_kern.h
  270. $(obj)/hbm.o: $(src)/hbm.h
  271. $(obj)/hbm_edt_kern.o: $(src)/hbm.h $(src)/hbm_kern.h
  272. -include $(BPF_SAMPLES_PATH)/Makefile.target
  273. # asm/sysreg.h - inline assembly used by it is incompatible with llvm.
  274. # But, there is no easy way to fix it, so just exclude it since it is
  275. # useless for BPF samples.
  276. # below we use long chain of commands, clang | opt | llvm-dis | llc,
  277. # to generate final object file. 'clang' compiles the source into IR
  278. # with native target, e.g., x64, arm64, etc. 'opt' does bpf CORE IR builtin
  279. # processing (llvm12) and IR optimizations. 'llvm-dis' converts
  280. # 'opt' output to IR, and finally 'llc' generates bpf byte code.
  281. $(obj)/%.o: $(src)/%.c
  282. @echo " CLANG-bpf " $@
  283. $(Q)$(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(BPF_EXTRA_CFLAGS) \
  284. -I$(obj) -I$(srctree)/tools/testing/selftests/bpf/ \
  285. -I$(srctree)/tools/lib/ \
  286. -D__KERNEL__ -D__BPF_TRACING__ -Wno-unused-value -Wno-pointer-sign \
  287. -D__TARGET_ARCH_$(SRCARCH) -Wno-compare-distinct-pointer-types \
  288. -Wno-gnu-variable-sized-type-not-at-end \
  289. -Wno-address-of-packed-member -Wno-tautological-compare \
  290. -Wno-unknown-warning-option $(CLANG_ARCH_ARGS) \
  291. -I$(srctree)/samples/bpf/ -include asm_goto_workaround.h \
  292. -O2 -emit-llvm -Xclang -disable-llvm-passes -c $< -o - | \
  293. $(OPT) -O2 -mtriple=bpf-pc-linux | $(LLVM_DIS) | \
  294. $(LLC) -march=bpf $(LLC_FLAGS) -filetype=obj -o $@
  295. ifeq ($(DWARF2BTF),y)
  296. $(BTF_PAHOLE) -J $@
  297. endif