diff options
Diffstat (limited to 'samples/bpf/Makefile')
| -rw-r--r-- | samples/bpf/Makefile | 279 |
1 files changed, 279 insertions, 0 deletions
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile new file mode 100644 index 000000000..85a6e8f5a --- /dev/null +++ b/samples/bpf/Makefile @@ -0,0 +1,279 @@ +# 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_attach2 +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 += load_sock_ops +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 + +# 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 := bpf_load.o fds_example.o +sockex1-objs := bpf_load.o sockex1_user.o +sockex2-objs := bpf_load.o 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 +load_sock_ops-objs := bpf_load.o load_sock_ops.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_attach2-objs := test_cgrp2_attach2.o $(CGROUP_HELPERS) +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 := bpf_load.o 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 := bpf_load.o 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 := bpf_load.o xdp_redirect_user.o +xdp_redirect_map-objs := bpf_load.o 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) + +# Tell kbuild to always build the programs +always := $(hostprogs-y) +always += sockex1_kern.o +always += sockex2_kern.o +always += sockex3_kern.o +always += tracex1_kern.o +always += tracex2_kern.o +always += tracex3_kern.o +always += tracex4_kern.o +always += tracex5_kern.o +always += tracex6_kern.o +always += tracex7_kern.o +always += sock_flags_kern.o +always += test_probe_write_user_kern.o +always += trace_output_kern.o +always += tcbpf1_kern.o +always += tc_l2_redirect_kern.o +always += lathist_kern.o +always += offwaketime_kern.o +always += spintest_kern.o +always += map_perf_test_kern.o +always += test_overhead_tp_kern.o +always += test_overhead_raw_tp_kern.o +always += test_overhead_kprobe_kern.o +always += parse_varlen.o parse_simple.o parse_ldabs.o +always += test_cgrp2_tc_kern.o +always += xdp1_kern.o +always += xdp2_kern.o +always += xdp_router_ipv4_kern.o +always += test_current_task_under_cgroup_kern.o +always += trace_event_kern.o +always += sampleip_kern.o +always += lwt_len_hist_kern.o +always += xdp_tx_iptunnel_kern.o +always += test_map_in_map_kern.o +always += cookie_uid_helper_example.o +always += tcp_synrto_kern.o +always += tcp_rwnd_kern.o +always += tcp_bufs_kern.o +always += tcp_cong_kern.o +always += tcp_iw_kern.o +always += tcp_clamp_kern.o +always += tcp_basertt_kern.o +always += xdp_redirect_kern.o +always += xdp_redirect_map_kern.o +always += xdp_redirect_cpu_kern.o +always += xdp_monitor_kern.o +always += xdp_rxq_info_kern.o +always += xdp2skb_meta_kern.o +always += syscall_tp_kern.o +always += cpustat_kern.o +always += xdp_adjust_tail_kern.o +always += xdpsock_kern.o +always += xdp_fwd_kern.o +always += task_fd_query_kern.o +always += xdp_sample_pkts_kern.o + +KBUILD_HOSTCFLAGS += -I$(objtree)/usr/include +KBUILD_HOSTCFLAGS += -I$(srctree)/tools/lib/ +KBUILD_HOSTCFLAGS += -I$(srctree)/tools/testing/selftests/bpf/ +KBUILD_HOSTCFLAGS += -I$(srctree)/tools/lib/ -I$(srctree)/tools/include +KBUILD_HOSTCFLAGS += -I$(srctree)/tools/perf +KBUILD_HOSTCFLAGS += -DHAVE_ATTR_TEST=0 + +HOSTCFLAGS_bpf_load.o += -I$(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 + +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 $(LLVM_OBJCOPY) --help 2>&1 | grep -i 'usage.*llvm') + +ifneq ($(and $(BTF_LLC_PROBE),$(BTF_PAHOLE_PROBE),$(BTF_OBJCOPY_PROBE)),) + EXTRA_CFLAGS += -g + LLC_FLAGS += -mattr=dwarfris + DWARF2BTF = y +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 + @find $(CURDIR) -type f -name '*~' -delete + +$(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.s: $(src)/syscall_nrs.c + $(call if_changed_dep,cc_s_c) + +$(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s FORCE + $(call filechk,offsets,__SYSCALL_NRS_H__) + +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: $(obj)/syscall_nrs.h + +# asm/sysreg.h - inline assembly used by it is incompatible with llvm. +# But, there is no easy way to fix it, so just exclude it since it is +# useless for BPF samples. +$(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) \ + -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf $(LLC_FLAGS) -filetype=obj -o $@ +ifeq ($(DWARF2BTF),y) + $(BTF_PAHOLE) -J $@ +endif |