1# SPDX-License-Identifier: GPL-2.0 2 3BPF_SAMPLES_PATH ?= $(abspath $(srctree)/$(src)) 4TOOLS_PATH := $(BPF_SAMPLES_PATH)/../../tools 5 6pound := \# 7 8# List of programs to build 9tprogs-y := test_lru_dist 10tprogs-y += sock_example 11tprogs-y += fds_example 12tprogs-y += sockex1 13tprogs-y += sockex2 14tprogs-y += sockex3 15tprogs-y += tracex1 16tprogs-y += tracex2 17tprogs-y += tracex3 18tprogs-y += tracex4 19tprogs-y += tracex5 20tprogs-y += tracex6 21tprogs-y += tracex7 22tprogs-y += test_probe_write_user 23tprogs-y += trace_output 24tprogs-y += lathist 25tprogs-y += offwaketime 26tprogs-y += spintest 27tprogs-y += map_perf_test 28tprogs-y += test_overhead 29tprogs-y += test_cgrp2_array_pin 30tprogs-y += test_cgrp2_attach 31tprogs-y += test_cgrp2_sock 32tprogs-y += test_cgrp2_sock2 33tprogs-y += xdp1 34tprogs-y += xdp2 35tprogs-y += xdp_router_ipv4 36tprogs-y += test_current_task_under_cgroup 37tprogs-y += trace_event 38tprogs-y += sampleip 39tprogs-y += tc_l2_redirect 40tprogs-y += lwt_len_hist 41tprogs-y += xdp_tx_iptunnel 42tprogs-y += test_map_in_map 43tprogs-y += per_socket_stats_example 44tprogs-y += xdp_rxq_info 45tprogs-y += syscall_tp 46tprogs-y += cpustat 47tprogs-y += xdp_adjust_tail 48tprogs-y += xdp_fwd 49tprogs-y += task_fd_query 50tprogs-y += xdp_sample_pkts 51tprogs-y += ibumad 52tprogs-y += hbm 53 54tprogs-y += xdp_redirect_cpu 55tprogs-y += xdp_redirect_map_multi 56tprogs-y += xdp_redirect_map 57tprogs-y += xdp_redirect 58tprogs-y += xdp_monitor 59 60# Libbpf dependencies 61LIBBPF_SRC = $(TOOLS_PATH)/lib/bpf 62LIBBPF_OUTPUT = $(abspath $(BPF_SAMPLES_PATH))/libbpf 63LIBBPF_DESTDIR = $(LIBBPF_OUTPUT) 64LIBBPF_INCLUDE = $(LIBBPF_DESTDIR)/include 65LIBBPF = $(LIBBPF_OUTPUT)/libbpf.a 66 67CGROUP_HELPERS := ../../tools/testing/selftests/bpf/cgroup_helpers.o 68TRACE_HELPERS := ../../tools/testing/selftests/bpf/trace_helpers.o 69XDP_SAMPLE := xdp_sample_user.o 70 71fds_example-objs := fds_example.o 72sockex1-objs := sockex1_user.o 73sockex2-objs := sockex2_user.o 74sockex3-objs := sockex3_user.o 75tracex1-objs := tracex1_user.o $(TRACE_HELPERS) 76tracex2-objs := tracex2_user.o 77tracex3-objs := tracex3_user.o 78tracex4-objs := tracex4_user.o 79tracex5-objs := tracex5_user.o $(TRACE_HELPERS) 80tracex6-objs := tracex6_user.o 81tracex7-objs := tracex7_user.o 82test_probe_write_user-objs := test_probe_write_user_user.o 83trace_output-objs := trace_output_user.o 84lathist-objs := lathist_user.o 85offwaketime-objs := offwaketime_user.o $(TRACE_HELPERS) 86spintest-objs := spintest_user.o $(TRACE_HELPERS) 87map_perf_test-objs := map_perf_test_user.o 88test_overhead-objs := test_overhead_user.o 89test_cgrp2_array_pin-objs := test_cgrp2_array_pin.o 90test_cgrp2_attach-objs := test_cgrp2_attach.o 91test_cgrp2_sock-objs := test_cgrp2_sock.o 92test_cgrp2_sock2-objs := test_cgrp2_sock2.o 93xdp1-objs := xdp1_user.o 94# reuse xdp1 source intentionally 95xdp2-objs := xdp1_user.o 96test_current_task_under_cgroup-objs := $(CGROUP_HELPERS) \ 97 test_current_task_under_cgroup_user.o 98trace_event-objs := trace_event_user.o $(TRACE_HELPERS) 99sampleip-objs := sampleip_user.o $(TRACE_HELPERS) 100tc_l2_redirect-objs := tc_l2_redirect_user.o 101lwt_len_hist-objs := lwt_len_hist_user.o 102xdp_tx_iptunnel-objs := xdp_tx_iptunnel_user.o 103test_map_in_map-objs := test_map_in_map_user.o 104per_socket_stats_example-objs := cookie_uid_helper_example.o 105xdp_rxq_info-objs := xdp_rxq_info_user.o 106syscall_tp-objs := syscall_tp_user.o 107cpustat-objs := cpustat_user.o 108xdp_adjust_tail-objs := xdp_adjust_tail_user.o 109xdp_fwd-objs := xdp_fwd_user.o 110task_fd_query-objs := task_fd_query_user.o $(TRACE_HELPERS) 111xdp_sample_pkts-objs := xdp_sample_pkts_user.o 112ibumad-objs := ibumad_user.o 113hbm-objs := hbm.o $(CGROUP_HELPERS) 114 115xdp_redirect_map_multi-objs := xdp_redirect_map_multi_user.o $(XDP_SAMPLE) 116xdp_redirect_cpu-objs := xdp_redirect_cpu_user.o $(XDP_SAMPLE) 117xdp_redirect_map-objs := xdp_redirect_map_user.o $(XDP_SAMPLE) 118xdp_redirect-objs := xdp_redirect_user.o $(XDP_SAMPLE) 119xdp_monitor-objs := xdp_monitor_user.o $(XDP_SAMPLE) 120xdp_router_ipv4-objs := xdp_router_ipv4_user.o $(XDP_SAMPLE) 121 122# Tell kbuild to always build the programs 123always-y := $(tprogs-y) 124always-y += sockex1_kern.o 125always-y += sockex2_kern.o 126always-y += sockex3_kern.o 127always-y += tracex1_kern.o 128always-y += tracex2.bpf.o 129always-y += tracex3_kern.o 130always-y += tracex4_kern.o 131always-y += tracex5_kern.o 132always-y += tracex6_kern.o 133always-y += tracex7_kern.o 134always-y += sock_flags.bpf.o 135always-y += test_probe_write_user.bpf.o 136always-y += trace_output.bpf.o 137always-y += tcbpf1_kern.o 138always-y += tc_l2_redirect_kern.o 139always-y += lathist_kern.o 140always-y += offwaketime_kern.o 141always-y += spintest_kern.o 142always-y += map_perf_test.bpf.o 143always-y += test_overhead_tp.bpf.o 144always-y += test_overhead_raw_tp.bpf.o 145always-y += test_overhead_kprobe.bpf.o 146always-y += parse_varlen.o parse_simple.o parse_ldabs.o 147always-y += test_cgrp2_tc.bpf.o 148always-y += xdp1_kern.o 149always-y += xdp2_kern.o 150always-y += test_current_task_under_cgroup.bpf.o 151always-y += trace_event_kern.o 152always-y += sampleip_kern.o 153always-y += lwt_len_hist.bpf.o 154always-y += xdp_tx_iptunnel_kern.o 155always-y += test_map_in_map.bpf.o 156always-y += tcp_synrto_kern.o 157always-y += tcp_rwnd_kern.o 158always-y += tcp_bufs_kern.o 159always-y += tcp_cong_kern.o 160always-y += tcp_iw_kern.o 161always-y += tcp_clamp_kern.o 162always-y += tcp_basertt_kern.o 163always-y += tcp_tos_reflect_kern.o 164always-y += tcp_dumpstats_kern.o 165always-y += xdp_rxq_info_kern.o 166always-y += xdp2skb_meta_kern.o 167always-y += syscall_tp_kern.o 168always-y += cpustat_kern.o 169always-y += xdp_adjust_tail_kern.o 170always-y += xdp_fwd_kern.o 171always-y += task_fd_query_kern.o 172always-y += xdp_sample_pkts_kern.o 173always-y += ibumad_kern.o 174always-y += hbm_out_kern.o 175always-y += hbm_edt_kern.o 176 177ifeq ($(ARCH), arm) 178# Strip all except -D__LINUX_ARM_ARCH__ option needed to handle linux 179# headers when arm instruction set identification is requested. 180ARM_ARCH_SELECTOR := $(filter -D__LINUX_ARM_ARCH__%, $(KBUILD_CFLAGS)) 181BPF_EXTRA_CFLAGS := $(ARM_ARCH_SELECTOR) 182TPROGS_CFLAGS += $(ARM_ARCH_SELECTOR) 183endif 184 185ifeq ($(ARCH), mips) 186TPROGS_CFLAGS += -D__SANE_USERSPACE_TYPES__ 187ifdef CONFIG_MACH_LOONGSON64 188BPF_EXTRA_CFLAGS += -I$(srctree)/arch/mips/include/asm/mach-loongson64 189BPF_EXTRA_CFLAGS += -I$(srctree)/arch/mips/include/asm/mach-generic 190endif 191endif 192 193TPROGS_CFLAGS += -Wall -O2 194TPROGS_CFLAGS += -Wmissing-prototypes 195TPROGS_CFLAGS += -Wstrict-prototypes 196 197TPROGS_CFLAGS += -I$(objtree)/usr/include 198TPROGS_CFLAGS += -I$(srctree)/tools/testing/selftests/bpf/ 199TPROGS_CFLAGS += -I$(LIBBPF_INCLUDE) 200TPROGS_CFLAGS += -I$(srctree)/tools/include 201TPROGS_CFLAGS += -I$(srctree)/tools/perf 202TPROGS_CFLAGS += -DHAVE_ATTR_TEST=0 203 204ifdef SYSROOT 205TPROGS_CFLAGS += --sysroot=$(SYSROOT) 206TPROGS_LDFLAGS := -L$(SYSROOT)/usr/lib 207endif 208 209TPROGS_LDLIBS += $(LIBBPF) -lelf -lz 210TPROGLDLIBS_xdp_monitor += -lm 211TPROGLDLIBS_xdp_redirect += -lm 212TPROGLDLIBS_xdp_redirect_cpu += -lm 213TPROGLDLIBS_xdp_redirect_map += -lm 214TPROGLDLIBS_xdp_redirect_map_multi += -lm 215TPROGLDLIBS_xdp_router_ipv4 += -lm -pthread 216TPROGLDLIBS_tracex4 += -lrt 217TPROGLDLIBS_trace_output += -lrt 218TPROGLDLIBS_map_perf_test += -lrt 219TPROGLDLIBS_test_overhead += -lrt 220 221# Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline: 222# make M=samples/bpf LLC=~/git/llvm-project/llvm/build/bin/llc CLANG=~/git/llvm-project/llvm/build/bin/clang 223LLC ?= llc 224CLANG ?= clang 225OPT ?= opt 226LLVM_DIS ?= llvm-dis 227LLVM_OBJCOPY ?= llvm-objcopy 228LLVM_READELF ?= llvm-readelf 229BTF_PAHOLE ?= pahole 230 231# Detect that we're cross compiling and use the cross compiler 232ifdef CROSS_COMPILE 233CLANG_ARCH_ARGS = --target=$(notdir $(CROSS_COMPILE:%-=%)) 234endif 235 236# Don't evaluate probes and warnings if we need to run make recursively 237ifneq ($(src),) 238HDR_PROBE := $(shell printf "$(pound)include <linux/types.h>\n struct list_head { int a; }; int main() { return 0; }" | \ 239 $(CC) $(TPROGS_CFLAGS) $(TPROGS_LDFLAGS) -x c - \ 240 -o /dev/null 2>/dev/null && echo okay) 241 242ifeq ($(HDR_PROBE),) 243$(warning WARNING: Detected possible issues with include path.) 244$(warning WARNING: Please install kernel headers locally (make headers_install).) 245endif 246 247BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris) 248BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF) 249BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm') 250BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \ 251 $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \ 252 $(LLVM_READELF) -S ./llvm_btf_verify.o | grep BTF; \ 253 /bin/rm -f ./llvm_btf_verify.o) 254 255BPF_EXTRA_CFLAGS += -fno-stack-protector 256ifneq ($(BTF_LLVM_PROBE),) 257 BPF_EXTRA_CFLAGS += -g 258else 259ifneq ($(and $(BTF_LLC_PROBE),$(BTF_PAHOLE_PROBE),$(BTF_OBJCOPY_PROBE)),) 260 BPF_EXTRA_CFLAGS += -g 261 LLC_FLAGS += -mattr=dwarfris 262 DWARF2BTF = y 263endif 264endif 265endif 266 267# Trick to allow make to be run from this directory 268all: 269 $(MAKE) -C ../../ M=$(CURDIR) BPF_SAMPLES_PATH=$(CURDIR) 270 271clean: 272 $(MAKE) -C ../../ M=$(CURDIR) clean 273 @find $(CURDIR) -type f -name '*~' -delete 274 @$(RM) -r $(CURDIR)/libbpf $(CURDIR)/bpftool 275 276$(LIBBPF): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(LIBBPF_OUTPUT) 277# Fix up variables inherited from Kbuild that tools/ build system won't like 278 $(MAKE) -C $(LIBBPF_SRC) RM='rm -rf' EXTRA_CFLAGS="$(TPROGS_CFLAGS)" \ 279 LDFLAGS=$(TPROGS_LDFLAGS) srctree=$(BPF_SAMPLES_PATH)/../../ \ 280 O= OUTPUT=$(LIBBPF_OUTPUT)/ DESTDIR=$(LIBBPF_DESTDIR) prefix= \ 281 $@ install_headers 282 283BPFTOOLDIR := $(TOOLS_PATH)/bpf/bpftool 284BPFTOOL_OUTPUT := $(abspath $(BPF_SAMPLES_PATH))/bpftool 285BPFTOOL := $(BPFTOOL_OUTPUT)/bootstrap/bpftool 286$(BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) | $(BPFTOOL_OUTPUT) 287 $(MAKE) -C $(BPFTOOLDIR) srctree=$(BPF_SAMPLES_PATH)/../../ \ 288 OUTPUT=$(BPFTOOL_OUTPUT)/ bootstrap 289 290$(LIBBPF_OUTPUT) $(BPFTOOL_OUTPUT): 291 $(call msg,MKDIR,$@) 292 $(Q)mkdir -p $@ 293 294$(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s FORCE 295 $(call filechk,offsets,__SYSCALL_NRS_H__) 296 297targets += syscall_nrs.s 298clean-files += syscall_nrs.h 299 300FORCE: 301 302 303# Verify LLVM compiler tools are available and bpf target is supported by llc 304.PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC) 305 306verify_cmds: $(CLANG) $(LLC) 307 @for TOOL in $^ ; do \ 308 if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \ 309 echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\ 310 exit 1; \ 311 else true; fi; \ 312 done 313 314verify_target_bpf: verify_cmds 315 @if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \ 316 echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\ 317 echo " NOTICE: LLVM version >= 3.7.1 required" ;\ 318 exit 2; \ 319 else true; fi 320 321$(BPF_SAMPLES_PATH)/*.c: verify_target_bpf $(LIBBPF) 322$(src)/*.c: verify_target_bpf $(LIBBPF) 323 324libbpf_hdrs: $(LIBBPF) 325$(obj)/$(TRACE_HELPERS) $(obj)/$(CGROUP_HELPERS) $(obj)/$(XDP_SAMPLE): | libbpf_hdrs 326 327.PHONY: libbpf_hdrs 328 329$(obj)/xdp_redirect_cpu_user.o: $(obj)/xdp_redirect_cpu.skel.h 330$(obj)/xdp_redirect_map_multi_user.o: $(obj)/xdp_redirect_map_multi.skel.h 331$(obj)/xdp_redirect_map_user.o: $(obj)/xdp_redirect_map.skel.h 332$(obj)/xdp_redirect_user.o: $(obj)/xdp_redirect.skel.h 333$(obj)/xdp_monitor_user.o: $(obj)/xdp_monitor.skel.h 334$(obj)/xdp_router_ipv4_user.o: $(obj)/xdp_router_ipv4.skel.h 335 336$(obj)/tracex5_kern.o: $(obj)/syscall_nrs.h 337$(obj)/hbm_out_kern.o: $(src)/hbm.h $(src)/hbm_kern.h 338$(obj)/hbm.o: $(src)/hbm.h 339$(obj)/hbm_edt_kern.o: $(src)/hbm.h $(src)/hbm_kern.h 340 341# Override includes for xdp_sample_user.o because $(srctree)/usr/include in 342# TPROGS_CFLAGS causes conflicts 343XDP_SAMPLE_CFLAGS += -Wall -O2 \ 344 -I$(src)/../../tools/include \ 345 -I$(src)/../../tools/include/uapi \ 346 -I$(LIBBPF_INCLUDE) \ 347 -I$(src)/../../tools/testing/selftests/bpf 348 349$(obj)/$(XDP_SAMPLE): TPROGS_CFLAGS = $(XDP_SAMPLE_CFLAGS) 350$(obj)/$(XDP_SAMPLE): $(src)/xdp_sample_user.h $(src)/xdp_sample_shared.h 351 352-include $(BPF_SAMPLES_PATH)/Makefile.target 353 354VMLINUX_BTF_PATHS ?= $(abspath $(if $(O),$(O)/vmlinux)) \ 355 $(abspath $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux)) \ 356 $(abspath ./vmlinux) 357VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) 358 359$(obj)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) 360ifeq ($(VMLINUX_H),) 361ifeq ($(VMLINUX_BTF),) 362 $(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)",\ 363 build the kernel or set VMLINUX_BTF or VMLINUX_H variable) 364endif 365 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@ 366else 367 $(Q)cp "$(VMLINUX_H)" $@ 368endif 369 370clean-files += vmlinux.h 371 372# Get Clang's default includes on this system, as opposed to those seen by 373# '-target bpf'. This fixes "missing" files on some architectures/distros, 374# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 375# 376# Use '-idirafter': Don't interfere with include mechanics except where the 377# build would have failed anyways. 378define get_sys_includes 379$(shell $(1) -v -E - </dev/null 2>&1 \ 380 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \ 381$(shell $(1) -dM -E - </dev/null | grep '#define __riscv_xlen ' | sed 's/#define /-D/' | sed 's/ /=/') 382endef 383 384CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG)) 385 386$(obj)/xdp_redirect_cpu.bpf.o: $(obj)/xdp_sample.bpf.o 387$(obj)/xdp_redirect_map_multi.bpf.o: $(obj)/xdp_sample.bpf.o 388$(obj)/xdp_redirect_map.bpf.o: $(obj)/xdp_sample.bpf.o 389$(obj)/xdp_redirect.bpf.o: $(obj)/xdp_sample.bpf.o 390$(obj)/xdp_monitor.bpf.o: $(obj)/xdp_sample.bpf.o 391$(obj)/xdp_router_ipv4.bpf.o: $(obj)/xdp_sample.bpf.o 392 393$(obj)/%.bpf.o: $(src)/%.bpf.c $(obj)/vmlinux.h $(src)/xdp_sample.bpf.h $(src)/xdp_sample_shared.h 394 @echo " CLANG-BPF " $@ 395 $(Q)$(CLANG) -g -O2 -target bpf -D__TARGET_ARCH_$(SRCARCH) \ 396 -Wno-compare-distinct-pointer-types -I$(srctree)/include \ 397 -I$(srctree)/samples/bpf -I$(srctree)/tools/include \ 398 -I$(LIBBPF_INCLUDE) $(CLANG_SYS_INCLUDES) \ 399 -c $(filter %.bpf.c,$^) -o $@ 400 401LINKED_SKELS := xdp_redirect_cpu.skel.h xdp_redirect_map_multi.skel.h \ 402 xdp_redirect_map.skel.h xdp_redirect.skel.h xdp_monitor.skel.h \ 403 xdp_router_ipv4.skel.h 404clean-files += $(LINKED_SKELS) 405 406xdp_redirect_cpu.skel.h-deps := xdp_redirect_cpu.bpf.o xdp_sample.bpf.o 407xdp_redirect_map_multi.skel.h-deps := xdp_redirect_map_multi.bpf.o xdp_sample.bpf.o 408xdp_redirect_map.skel.h-deps := xdp_redirect_map.bpf.o xdp_sample.bpf.o 409xdp_redirect.skel.h-deps := xdp_redirect.bpf.o xdp_sample.bpf.o 410xdp_monitor.skel.h-deps := xdp_monitor.bpf.o xdp_sample.bpf.o 411xdp_router_ipv4.skel.h-deps := xdp_router_ipv4.bpf.o xdp_sample.bpf.o 412 413LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.bpf.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps))) 414 415BPF_SRCS_LINKED := $(notdir $(wildcard $(src)/*.bpf.c)) 416BPF_OBJS_LINKED := $(patsubst %.bpf.c,$(obj)/%.bpf.o, $(BPF_SRCS_LINKED)) 417BPF_SKELS_LINKED := $(addprefix $(obj)/,$(LINKED_SKELS)) 418 419$(BPF_SKELS_LINKED): $(BPF_OBJS_LINKED) $(BPFTOOL) 420 @echo " BPF GEN-OBJ " $(@:.skel.h=) 421 $(Q)$(BPFTOOL) gen object $(@:.skel.h=.lbpf.o) $(addprefix $(obj)/,$($(@F)-deps)) 422 @echo " BPF GEN-SKEL" $(@:.skel.h=) 423 $(Q)$(BPFTOOL) gen skeleton $(@:.skel.h=.lbpf.o) name $(notdir $(@:.skel.h=)) > $@ 424 425# asm/sysreg.h - inline assembly used by it is incompatible with llvm. 426# But, there is no easy way to fix it, so just exclude it since it is 427# useless for BPF samples. 428# below we use long chain of commands, clang | opt | llvm-dis | llc, 429# to generate final object file. 'clang' compiles the source into IR 430# with native target, e.g., x64, arm64, etc. 'opt' does bpf CORE IR builtin 431# processing (llvm12) and IR optimizations. 'llvm-dis' converts 432# 'opt' output to IR, and finally 'llc' generates bpf byte code. 433$(obj)/%.o: $(src)/%.c 434 @echo " CLANG-bpf " $@ 435 $(Q)$(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(BPF_EXTRA_CFLAGS) \ 436 -I$(obj) -I$(srctree)/tools/testing/selftests/bpf/ \ 437 -I$(LIBBPF_INCLUDE) \ 438 -D__KERNEL__ -D__BPF_TRACING__ -Wno-unused-value -Wno-pointer-sign \ 439 -D__TARGET_ARCH_$(SRCARCH) -Wno-compare-distinct-pointer-types \ 440 -Wno-gnu-variable-sized-type-not-at-end \ 441 -Wno-address-of-packed-member -Wno-tautological-compare \ 442 -Wno-unknown-warning-option $(CLANG_ARCH_ARGS) \ 443 -fno-asynchronous-unwind-tables \ 444 -I$(srctree)/samples/bpf/ -include asm_goto_workaround.h \ 445 -O2 -emit-llvm -Xclang -disable-llvm-passes -c $< -o - | \ 446 $(OPT) -O2 -mtriple=bpf-pc-linux | $(LLVM_DIS) | \ 447 $(LLC) -march=bpf $(LLC_FLAGS) -filetype=obj -o $@ 448ifeq ($(DWARF2BTF),y) 449 $(BTF_PAHOLE) -J $@ 450endif 451