| # SPDX-License-Identifier: GPL-2.0 |
| |
| BPF_SAMPLES_PATH ?= $(abspath $(srctree)/$(src)) |
| TOOLS_PATH := $(BPF_SAMPLES_PATH)/../../tools |
| |
| # List of programs to build |
| hostprogs-y := test_lru_dist |
| hostprogs-y += sock_example |
| hostprogs-y += fds_example |
| hostprogs-y += sockex1 |
| hostprogs-y += sockex2 |
| hostprogs-y += sockex3 |
| hostprogs-y += tracex1 |
| hostprogs-y += tracex2 |
| hostprogs-y += tracex3 |
| hostprogs-y += tracex4 |
| hostprogs-y += tracex5 |
| hostprogs-y += tracex6 |
| hostprogs-y += tracex7 |
| hostprogs-y += test_probe_write_user |
| hostprogs-y += trace_output |
| hostprogs-y += lathist |
| hostprogs-y += offwaketime |
| hostprogs-y += spintest |
| hostprogs-y += map_perf_test |
| hostprogs-y += test_overhead |
| hostprogs-y += test_cgrp2_array_pin |
| hostprogs-y += test_cgrp2_attach |
| hostprogs-y += test_cgrp2_sock |
| hostprogs-y += test_cgrp2_sock2 |
| hostprogs-y += xdp1 |
| hostprogs-y += xdp2 |
| hostprogs-y += xdp_router_ipv4 |
| hostprogs-y += test_current_task_under_cgroup |
| hostprogs-y += trace_event |
| hostprogs-y += sampleip |
| hostprogs-y += tc_l2_redirect |
| hostprogs-y += lwt_len_hist |
| hostprogs-y += xdp_tx_iptunnel |
| hostprogs-y += test_map_in_map |
| hostprogs-y += per_socket_stats_example |
| hostprogs-y += xdp_redirect |
| hostprogs-y += xdp_redirect_map |
| hostprogs-y += xdp_redirect_cpu |
| hostprogs-y += xdp_monitor |
| hostprogs-y += xdp_rxq_info |
| hostprogs-y += syscall_tp |
| hostprogs-y += cpustat |
| hostprogs-y += xdp_adjust_tail |
| hostprogs-y += xdpsock |
| hostprogs-y += xdp_fwd |
| hostprogs-y += task_fd_query |
| hostprogs-y += xdp_sample_pkts |
| hostprogs-y += ibumad |
| hostprogs-y += hbm |
| |
| # Libbpf dependencies |
| LIBBPF = $(TOOLS_PATH)/lib/bpf/libbpf.a |
| |
| CGROUP_HELPERS := ../../tools/testing/selftests/bpf/cgroup_helpers.o |
| TRACE_HELPERS := ../../tools/testing/selftests/bpf/trace_helpers.o |
| |
| fds_example-objs := fds_example.o |
| sockex1-objs := sockex1_user.o |
| sockex2-objs := sockex2_user.o |
| sockex3-objs := bpf_load.o sockex3_user.o |
| tracex1-objs := bpf_load.o tracex1_user.o |
| tracex2-objs := bpf_load.o tracex2_user.o |
| tracex3-objs := bpf_load.o tracex3_user.o |
| tracex4-objs := bpf_load.o tracex4_user.o |
| tracex5-objs := bpf_load.o tracex5_user.o |
| tracex6-objs := bpf_load.o tracex6_user.o |
| tracex7-objs := bpf_load.o tracex7_user.o |
| test_probe_write_user-objs := bpf_load.o test_probe_write_user_user.o |
| trace_output-objs := bpf_load.o trace_output_user.o $(TRACE_HELPERS) |
| lathist-objs := bpf_load.o lathist_user.o |
| offwaketime-objs := bpf_load.o offwaketime_user.o $(TRACE_HELPERS) |
| spintest-objs := bpf_load.o spintest_user.o $(TRACE_HELPERS) |
| map_perf_test-objs := bpf_load.o map_perf_test_user.o |
| test_overhead-objs := bpf_load.o test_overhead_user.o |
| test_cgrp2_array_pin-objs := test_cgrp2_array_pin.o |
| test_cgrp2_attach-objs := test_cgrp2_attach.o |
| test_cgrp2_sock-objs := test_cgrp2_sock.o |
| test_cgrp2_sock2-objs := bpf_load.o test_cgrp2_sock2.o |
| xdp1-objs := xdp1_user.o |
| # reuse xdp1 source intentionally |
| xdp2-objs := xdp1_user.o |
| xdp_router_ipv4-objs := xdp_router_ipv4_user.o |
| test_current_task_under_cgroup-objs := bpf_load.o $(CGROUP_HELPERS) \ |
| test_current_task_under_cgroup_user.o |
| trace_event-objs := bpf_load.o trace_event_user.o $(TRACE_HELPERS) |
| sampleip-objs := bpf_load.o sampleip_user.o $(TRACE_HELPERS) |
| tc_l2_redirect-objs := bpf_load.o tc_l2_redirect_user.o |
| lwt_len_hist-objs := bpf_load.o lwt_len_hist_user.o |
| xdp_tx_iptunnel-objs := xdp_tx_iptunnel_user.o |
| test_map_in_map-objs := bpf_load.o test_map_in_map_user.o |
| per_socket_stats_example-objs := cookie_uid_helper_example.o |
| xdp_redirect-objs := xdp_redirect_user.o |
| xdp_redirect_map-objs := xdp_redirect_map_user.o |
| xdp_redirect_cpu-objs := bpf_load.o xdp_redirect_cpu_user.o |
| xdp_monitor-objs := bpf_load.o xdp_monitor_user.o |
| xdp_rxq_info-objs := xdp_rxq_info_user.o |
| syscall_tp-objs := bpf_load.o syscall_tp_user.o |
| cpustat-objs := bpf_load.o cpustat_user.o |
| xdp_adjust_tail-objs := xdp_adjust_tail_user.o |
| xdpsock-objs := xdpsock_user.o |
| xdp_fwd-objs := xdp_fwd_user.o |
| task_fd_query-objs := bpf_load.o task_fd_query_user.o $(TRACE_HELPERS) |
| xdp_sample_pkts-objs := xdp_sample_pkts_user.o $(TRACE_HELPERS) |
| ibumad-objs := bpf_load.o ibumad_user.o $(TRACE_HELPERS) |
| hbm-objs := bpf_load.o hbm.o $(CGROUP_HELPERS) |
| |
| # Tell kbuild to always build the programs |
| always := $(hostprogs-y) |
| always += sockex1_kern.o |
| always += sockex2_kern.o |
| always += sockex3_kern.o |
| always += tracex1_kern.o |
| always += tracex2_kern.o |
| always += tracex3_kern.o |
| always += tracex4_kern.o |
| always += tracex5_kern.o |
| always += tracex6_kern.o |
| always += tracex7_kern.o |
| always += sock_flags_kern.o |
| always += test_probe_write_user_kern.o |
| always += trace_output_kern.o |
| always += tcbpf1_kern.o |
| always += tc_l2_redirect_kern.o |
| always += lathist_kern.o |
| always += offwaketime_kern.o |
| always += spintest_kern.o |
| always += map_perf_test_kern.o |
| always += test_overhead_tp_kern.o |
| always += test_overhead_raw_tp_kern.o |
| always += test_overhead_kprobe_kern.o |
| always += parse_varlen.o parse_simple.o parse_ldabs.o |
| always += test_cgrp2_tc_kern.o |
| always += xdp1_kern.o |
| always += xdp2_kern.o |
| always += xdp_router_ipv4_kern.o |
| always += test_current_task_under_cgroup_kern.o |
| always += trace_event_kern.o |
| always += sampleip_kern.o |
| always += lwt_len_hist_kern.o |
| always += xdp_tx_iptunnel_kern.o |
| always += test_map_in_map_kern.o |
| always += cookie_uid_helper_example.o |
| always += tcp_synrto_kern.o |
| always += tcp_rwnd_kern.o |
| always += tcp_bufs_kern.o |
| always += tcp_cong_kern.o |
| always += tcp_iw_kern.o |
| always += tcp_clamp_kern.o |
| always += tcp_basertt_kern.o |
| always += tcp_tos_reflect_kern.o |
| always += xdp_redirect_kern.o |
| always += xdp_redirect_map_kern.o |
| always += xdp_redirect_cpu_kern.o |
| always += xdp_monitor_kern.o |
| always += xdp_rxq_info_kern.o |
| always += xdp2skb_meta_kern.o |
| always += syscall_tp_kern.o |
| always += cpustat_kern.o |
| always += xdp_adjust_tail_kern.o |
| always += xdp_fwd_kern.o |
| always += task_fd_query_kern.o |
| always += xdp_sample_pkts_kern.o |
| always += ibumad_kern.o |
| always += hbm_out_kern.o |
| |
| KBUILD_HOSTCFLAGS += -I$(objtree)/usr/include |
| KBUILD_HOSTCFLAGS += -I$(srctree)/tools/lib/bpf/ |
| KBUILD_HOSTCFLAGS += -I$(srctree)/tools/testing/selftests/bpf/ |
| KBUILD_HOSTCFLAGS += -I$(srctree)/tools/lib/ -I$(srctree)/tools/include |
| KBUILD_HOSTCFLAGS += -I$(srctree)/tools/perf |
| |
| HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable |
| HOSTCFLAGS_trace_helpers.o += -I$(srctree)/tools/lib/bpf/ |
| |
| HOSTCFLAGS_trace_output_user.o += -I$(srctree)/tools/lib/bpf/ |
| HOSTCFLAGS_offwaketime_user.o += -I$(srctree)/tools/lib/bpf/ |
| HOSTCFLAGS_spintest_user.o += -I$(srctree)/tools/lib/bpf/ |
| HOSTCFLAGS_trace_event_user.o += -I$(srctree)/tools/lib/bpf/ |
| HOSTCFLAGS_sampleip_user.o += -I$(srctree)/tools/lib/bpf/ |
| HOSTCFLAGS_task_fd_query_user.o += -I$(srctree)/tools/lib/bpf/ |
| HOSTCFLAGS_xdp_sample_pkts_user.o += -I$(srctree)/tools/lib/bpf/ |
| |
| KBUILD_HOSTLDLIBS += $(LIBBPF) -lelf |
| HOSTLDLIBS_tracex4 += -lrt |
| HOSTLDLIBS_trace_output += -lrt |
| HOSTLDLIBS_map_perf_test += -lrt |
| HOSTLDLIBS_test_overhead += -lrt |
| HOSTLDLIBS_xdpsock += -pthread |
| |
| # Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline: |
| # make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang |
| LLC ?= llc |
| CLANG ?= clang |
| LLVM_OBJCOPY ?= llvm-objcopy |
| BTF_PAHOLE ?= pahole |
| |
| # Detect that we're cross compiling and use the cross compiler |
| ifdef CROSS_COMPILE |
| HOSTCC = $(CROSS_COMPILE)gcc |
| CLANG_ARCH_ARGS = -target $(ARCH) |
| endif |
| |
| # Don't evaluate probes and warnings if we need to run make recursively |
| ifneq ($(src),) |
| HDR_PROBE := $(shell echo "\#include <linux/types.h>\n struct list_head { int a; }; int main() { return 0; }" | \ |
| $(HOSTCC) $(KBUILD_HOSTCFLAGS) -x c - -o /dev/null 2>/dev/null && \ |
| echo okay) |
| |
| ifeq ($(HDR_PROBE),) |
| $(warning WARNING: Detected possible issues with include path.) |
| $(warning WARNING: Please install kernel headers locally (make headers_install).) |
| endif |
| |
| BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris) |
| BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF) |
| BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm') |
| BTF_LLVM_PROBE := $(shell echo "int main() { return 0; }" | \ |
| $(CLANG) -target bpf -O2 -g -c -x c - -o ./llvm_btf_verify.o; \ |
| readelf -S ./llvm_btf_verify.o | grep BTF; \ |
| /bin/rm -f ./llvm_btf_verify.o) |
| |
| ifneq ($(BTF_LLVM_PROBE),) |
| EXTRA_CFLAGS += -g |
| else |
| ifneq ($(and $(BTF_LLC_PROBE),$(BTF_PAHOLE_PROBE),$(BTF_OBJCOPY_PROBE)),) |
| EXTRA_CFLAGS += -g |
| LLC_FLAGS += -mattr=dwarfris |
| DWARF2BTF = y |
| endif |
| endif |
| endif |
| |
| # Trick to allow make to be run from this directory |
| all: |
| $(MAKE) -C ../../ $(CURDIR)/ BPF_SAMPLES_PATH=$(CURDIR) |
| |
| clean: |
| $(MAKE) -C ../../ M=$(CURDIR) clean |
| @rm -f *~ |
| |
| $(LIBBPF): FORCE |
| # Fix up variables inherited from Kbuild that tools/ build system won't like |
| $(MAKE) -C $(dir $@) RM='rm -rf' LDFLAGS= srctree=$(BPF_SAMPLES_PATH)/../../ O= |
| |
| $(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s FORCE |
| $(call filechk,offsets,__SYSCALL_NRS_H__) |
| |
| targets += syscall_nrs.s |
| clean-files += syscall_nrs.h |
| |
| FORCE: |
| |
| |
| # Verify LLVM compiler tools are available and bpf target is supported by llc |
| .PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC) |
| |
| verify_cmds: $(CLANG) $(LLC) |
| @for TOOL in $^ ; do \ |
| if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \ |
| echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\ |
| exit 1; \ |
| else true; fi; \ |
| done |
| |
| verify_target_bpf: verify_cmds |
| @if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \ |
| echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\ |
| echo " NOTICE: LLVM version >= 3.7.1 required" ;\ |
| exit 2; \ |
| else true; fi |
| |
| $(BPF_SAMPLES_PATH)/*.c: verify_target_bpf $(LIBBPF) |
| $(src)/*.c: verify_target_bpf $(LIBBPF) |
| |
| $(obj)/tracex5_kern.o: $(obj)/syscall_nrs.h |
| $(obj)/hbm_out_kern.o: $(src)/hbm.h $(src)/hbm_kern.h |
| $(obj)/hbm.o: $(src)/hbm.h |
| |
| # asm/sysreg.h - inline assembly used by it is incompatible with llvm. |
| # But, there is no easy way to fix it, so just exclude it since it is |
| # useless for BPF samples. |
| $(obj)/%.o: $(src)/%.c |
| @echo " CLANG-bpf " $@ |
| $(Q)$(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) -I$(obj) \ |
| -I$(srctree)/tools/testing/selftests/bpf/ \ |
| -D__KERNEL__ -D__BPF_TRACING__ -Wno-unused-value -Wno-pointer-sign \ |
| -D__TARGET_ARCH_$(ARCH) -Wno-compare-distinct-pointer-types \ |
| -Wno-gnu-variable-sized-type-not-at-end \ |
| -Wno-address-of-packed-member -Wno-tautological-compare \ |
| -Wno-unknown-warning-option $(CLANG_ARCH_ARGS) \ |
| -I$(srctree)/samples/bpf/ -include asm_goto_workaround.h \ |
| -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf $(LLC_FLAGS) -filetype=obj -o $@ |
| ifeq ($(DWARF2BTF),y) |
| $(BTF_PAHOLE) -J $@ |
| endif |