# kbuild trick to avoid linker error. Can be omitted if a module is built.obj- := dummy.o # List of programs to buildhostprogs-y := test_lru_disthostprogs-y += sock_examplehostprogs-y += fds_examplehostprogs-y += sockex1hostprogs-y += sockex2hostprogs-y += sockex3hostprogs-y += tracex1hostprogs-y += tracex2hostprogs-y += tracex3hostprogs-y += tracex4hostprogs-y += tracex5hostprogs-y += tracex6hostprogs-y += test_probe_write_userhostprogs-y += trace_outputhostprogs-y += lathisthostprogs-y += offwaketimehostprogs-y += spintesthostprogs-y += map_perf_testhostprogs-y += test_overheadhostprogs-y += test_cgrp2_array_pinhostprogs-y += test_cgrp2_attachhostprogs-y += test_cgrp2_attach2hostprogs-y += test_cgrp2_sockhostprogs-y += test_cgrp2_sock2hostprogs-y += xdp1hostprogs-y += xdp2hostprogs-y += test_current_task_under_cgrouphostprogs-y += trace_eventhostprogs-y += sampleiphostprogs-y += tc_l2_redirecthostprogs-y += lwt_len_histhostprogs-y += xdp_tx_iptunnelhostprogs-y += test_map_in_maphostprogs-y += per_socket_stats_examplehostprogs-y += load_sock_ops # Libbpf dependenciesLIBBPF := ../../tools/lib/bpf/bpf.o test_lru_dist-objs := test_lru_dist.o $(LIBBPF)sock_example-objs := sock_example.o $(LIBBPF)fds_example-objs := bpf_load.o $(LIBBPF) fds_example.osockex1-objs := bpf_load.o $(LIBBPF) sockex1_user.osockex2-objs := bpf_load.o $(LIBBPF) sockex2_user.osockex3-objs := bpf_load.o $(LIBBPF) sockex3_user.otracex1-objs := bpf_load.o $(LIBBPF) tracex1_user.otracex2-objs := bpf_load.o $(LIBBPF) tracex2_user.otracex3-objs := bpf_load.o $(LIBBPF) tracex3_user.otracex4-objs := bpf_load.o $(LIBBPF) tracex4_user.otracex5-objs := bpf_load.o $(LIBBPF) tracex5_user.otracex6-objs := bpf_load.o $(LIBBPF) tracex6_user.oload_sock_ops-objs := bpf_load.o $(LIBBPF) load_sock_ops.otest_probe_write_user-objs := bpf_load.o $(LIBBPF) test_probe_write_user_user.otrace_output-objs := bpf_load.o $(LIBBPF) trace_output_user.olathist-objs := bpf_load.o $(LIBBPF) lathist_user.ooffwaketime-objs := bpf_load.o $(LIBBPF) offwaketime_user.ospintest-objs := bpf_load.o $(LIBBPF) spintest_user.omap_perf_test-objs := bpf_load.o $(LIBBPF) map_perf_test_user.otest_overhead-objs := bpf_load.o $(LIBBPF) test_overhead_user.otest_cgrp2_array_pin-objs := $(LIBBPF) test_cgrp2_array_pin.otest_cgrp2_attach-objs := $(LIBBPF) test_cgrp2_attach.otest_cgrp2_attach2-objs := $(LIBBPF) test_cgrp2_attach2.o cgroup_helpers.otest_cgrp2_sock-objs := $(LIBBPF) test_cgrp2_sock.otest_cgrp2_sock2-objs := bpf_load.o $(LIBBPF) test_cgrp2_sock2.oxdp1-objs := bpf_load.o $(LIBBPF) xdp1_user.o# reuse xdp1 source intentionallyxdp2-objs := bpf_load.o $(LIBBPF) xdp1_user.otest_current_task_under_cgroup-objs := bpf_load.o $(LIBBPF) cgroup_helpers.o \ test_current_task_under_cgroup_user.otrace_event-objs := bpf_load.o $(LIBBPF) trace_event_user.osampleip-objs := bpf_load.o $(LIBBPF) sampleip_user.otc_l2_redirect-objs := bpf_load.o $(LIBBPF) tc_l2_redirect_user.olwt_len_hist-objs := bpf_load.o $(LIBBPF) lwt_len_hist_user.oxdp_tx_iptunnel-objs := bpf_load.o $(LIBBPF) xdp_tx_iptunnel_user.otest_map_in_map-objs := bpf_load.o $(LIBBPF) test_map_in_map_user.oper_socket_stats_example-objs := $(LIBBPF) cookie_uid_helper_example.o # Tell kbuild to always build the programsalways := $(hostprogs-y)always += sockex1_kern.oalways += sockex2_kern.oalways += sockex3_kern.oalways += tracex1_kern.oalways += tracex2_kern.oalways += tracex3_kern.oalways += tracex4_kern.oalways += tracex5_kern.oalways += tracex6_kern.oalways += sock_flags_kern.oalways += test_probe_write_user_kern.oalways += trace_output_kern.oalways += tcbpf1_kern.oalways += tcbpf2_kern.oalways += tc_l2_redirect_kern.oalways += lathist_kern.oalways += offwaketime_kern.oalways += spintest_kern.oalways += map_perf_test_kern.oalways += test_overhead_tp_kern.oalways += test_overhead_kprobe_kern.oalways += parse_varlen.o parse_simple.o parse_ldabs.oalways += test_cgrp2_tc_kern.oalways += xdp1_kern.oalways += xdp2_kern.oalways += test_current_task_under_cgroup_kern.oalways += trace_event_kern.oalways += sampleip_kern.oalways += lwt_len_hist_kern.oalways += xdp_tx_iptunnel_kern.oalways += test_map_in_map_kern.oalways += cookie_uid_helper_example.oalways += tcp_synrto_kern.oalways += tcp_rwnd_kern.oalways += tcp_bufs_kern.oalways += tcp_cong_kern.oalways += tcp_iw_kern.oalways += tcp_clamp_kern.o HOSTCFLAGS += -I$(objtree)/usr/includeHOSTCFLAGS += -I$(srctree)/tools/lib/HOSTCFLAGS += -I$(srctree)/tools/testing/selftests/bpf/HOSTCFLAGS += -I$(srctree)/tools/lib/ -I$(srctree)/tools/includeHOSTCFLAGS += -I$(srctree)/tools/perf HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variableHOSTLOADLIBES_fds_example += -lelfHOSTLOADLIBES_sockex1 += -lelfHOSTLOADLIBES_sockex2 += -lelfHOSTLOADLIBES_sockex3 += -lelfHOSTLOADLIBES_tracex1 += -lelfHOSTLOADLIBES_tracex2 += -lelfHOSTLOADLIBES_tracex3 += -lelfHOSTLOADLIBES_tracex4 += -lelf -lrtHOSTLOADLIBES_tracex5 += -lelfHOSTLOADLIBES_tracex6 += -lelfHOSTLOADLIBES_test_cgrp2_sock2 += -lelfHOSTLOADLIBES_load_sock_ops += -lelfHOSTLOADLIBES_test_probe_write_user += -lelfHOSTLOADLIBES_trace_output += -lelf -lrtHOSTLOADLIBES_lathist += -lelfHOSTLOADLIBES_offwaketime += -lelfHOSTLOADLIBES_spintest += -lelfHOSTLOADLIBES_map_perf_test += -lelf -lrtHOSTLOADLIBES_test_overhead += -lelf -lrtHOSTLOADLIBES_xdp1 += -lelfHOSTLOADLIBES_xdp2 += -lelfHOSTLOADLIBES_test_current_task_under_cgroup += -lelfHOSTLOADLIBES_trace_event += -lelfHOSTLOADLIBES_sampleip += -lelfHOSTLOADLIBES_tc_l2_redirect += -l elfHOSTLOADLIBES_lwt_len_hist += -l elfHOSTLOADLIBES_xdp_tx_iptunnel += -lelfHOSTLOADLIBES_test_map_in_map += -lelf # 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/clangLLC ?= llcCLANG ?= clang # Trick to allow make to be run from this directoryall: $(MAKE) -C ../../ $(CURDIR)/ clean: $(MAKE) -C ../../ M=$(CURDIR) clean @rm -f *~ $(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 $(src)/*.c: verify_target_bpf $(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 $(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) -I$(obj) \ -I$(srctree)/tools/testing/selftests/bpf/ \ -D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \ -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 \ -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@
# kbuild trick to avoid linker error. Can be omitted if a module is built.
obj- := dummy.o
# 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 += 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 += 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
# Libbpf dependencies
LIBBPF := ../../tools/lib/bpf/bpf.o
test_lru_dist-objs := test_lru_dist.o $(LIBBPF)
sock_example-objs := sock_example.o $(LIBBPF)
fds_example-objs := bpf_load.o $(LIBBPF) fds_example.o
sockex1-objs := bpf_load.o $(LIBBPF) sockex1_user.o
sockex2-objs := bpf_load.o $(LIBBPF) sockex2_user.o
sockex3-objs := bpf_load.o $(LIBBPF) sockex3_user.o
tracex1-objs := bpf_load.o $(LIBBPF) tracex1_user.o
tracex2-objs := bpf_load.o $(LIBBPF) tracex2_user.o
tracex3-objs := bpf_load.o $(LIBBPF) tracex3_user.o
tracex4-objs := bpf_load.o $(LIBBPF) tracex4_user.o
tracex5-objs := bpf_load.o $(LIBBPF) tracex5_user.o
tracex6-objs := bpf_load.o $(LIBBPF) tracex6_user.o
load_sock_ops-objs := bpf_load.o $(LIBBPF) load_sock_ops.o
test_probe_write_user-objs := bpf_load.o $(LIBBPF) test_probe_write_user_user.o
trace_output-objs := bpf_load.o $(LIBBPF) trace_output_user.o
lathist-objs := bpf_load.o $(LIBBPF) lathist_user.o
offwaketime-objs := bpf_load.o $(LIBBPF) offwaketime_user.o
spintest-objs := bpf_load.o $(LIBBPF) spintest_user.o
map_perf_test-objs := bpf_load.o $(LIBBPF) map_perf_test_user.o
test_overhead-objs := bpf_load.o $(LIBBPF) test_overhead_user.o
test_cgrp2_array_pin-objs := $(LIBBPF) test_cgrp2_array_pin.o
test_cgrp2_attach-objs := $(LIBBPF) test_cgrp2_attach.o
test_cgrp2_attach2-objs := $(LIBBPF) test_cgrp2_attach2.o cgroup_helpers.o
test_cgrp2_sock-objs := $(LIBBPF) test_cgrp2_sock.o
test_cgrp2_sock2-objs := bpf_load.o $(LIBBPF) test_cgrp2_sock2.o
xdp1-objs := bpf_load.o $(LIBBPF) xdp1_user.o
# reuse xdp1 source intentionally
xdp2-objs := bpf_load.o $(LIBBPF) xdp1_user.o
test_current_task_under_cgroup-objs := bpf_load.o $(LIBBPF) cgroup_helpers.o \
test_current_task_under_cgroup_user.o
trace_event-objs := bpf_load.o $(LIBBPF) trace_event_user.o
sampleip-objs := bpf_load.o $(LIBBPF) sampleip_user.o
tc_l2_redirect-objs := bpf_load.o $(LIBBPF) tc_l2_redirect_user.o
lwt_len_hist-objs := bpf_load.o $(LIBBPF) lwt_len_hist_user.o
xdp_tx_iptunnel-objs := bpf_load.o $(LIBBPF) xdp_tx_iptunnel_user.o
test_map_in_map-objs := bpf_load.o $(LIBBPF) test_map_in_map_user.o
per_socket_stats_example-objs := $(LIBBPF) cookie_uid_helper_example.o
# Tell kbuild to always build the programs
always := $(hostprogs-y)
always += sockex1_kern.o
always += sockex2_kern.o
always += sockex3_kern.o
always += tracex1_kern.o
always += tracex2_kern.o
always += tracex3_kern.o
always += tracex4_kern.o
always += tracex5_kern.o
always += tracex6_kern.o
always += sock_flags_kern.o
always += test_probe_write_user_kern.o
always += trace_output_kern.o
always += tcbpf1_kern.o
always += tcbpf2_kern.o
always += tc_l2_redirect_kern.o
always += lathist_kern.o
always += offwaketime_kern.o
always += spintest_kern.o
always += map_perf_test_kern.o
always += test_overhead_tp_kern.o
always += test_overhead_kprobe_kern.o
always += parse_varlen.o parse_simple.o parse_ldabs.o
always += test_cgrp2_tc_kern.o
always += xdp1_kern.o
always += xdp2_kern.o
always += test_current_task_under_cgroup_kern.o
always += trace_event_kern.o
always += sampleip_kern.o
always += lwt_len_hist_kern.o
always += xdp_tx_iptunnel_kern.o
always += test_map_in_map_kern.o
always += cookie_uid_helper_example.o
always += tcp_synrto_kern.o
always += tcp_rwnd_kern.o
always += tcp_bufs_kern.o
always += tcp_cong_kern.o
always += tcp_iw_kern.o
always += tcp_clamp_kern.o
HOSTCFLAGS += -I$(objtree)/usr/include
HOSTCFLAGS += -I$(srctree)/tools/lib/
HOSTCFLAGS += -I$(srctree)/tools/testing/selftests/bpf/
HOSTCFLAGS += -I$(srctree)/tools/lib/ -I$(srctree)/tools/include
HOSTCFLAGS += -I$(srctree)/tools/perf
HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable
HOSTLOADLIBES_fds_example += -lelf
HOSTLOADLIBES_sockex1 += -lelf
HOSTLOADLIBES_sockex2 += -lelf
HOSTLOADLIBES_sockex3 += -lelf
HOSTLOADLIBES_tracex1 += -lelf
HOSTLOADLIBES_tracex2 += -lelf
HOSTLOADLIBES_tracex3 += -lelf
HOSTLOADLIBES_tracex4 += -lelf -lrt
HOSTLOADLIBES_tracex5 += -lelf
HOSTLOADLIBES_tracex6 += -lelf
HOSTLOADLIBES_test_cgrp2_sock2 += -lelf
HOSTLOADLIBES_load_sock_ops += -lelf
HOSTLOADLIBES_test_probe_write_user += -lelf
HOSTLOADLIBES_trace_output += -lelf -lrt
HOSTLOADLIBES_lathist += -lelf
HOSTLOADLIBES_offwaketime += -lelf
HOSTLOADLIBES_spintest += -lelf
HOSTLOADLIBES_map_perf_test += -lelf -lrt
HOSTLOADLIBES_test_overhead += -lelf -lrt
HOSTLOADLIBES_xdp1 += -lelf
HOSTLOADLIBES_xdp2 += -lelf
HOSTLOADLIBES_test_current_task_under_cgroup += -lelf
HOSTLOADLIBES_trace_event += -lelf
HOSTLOADLIBES_sampleip += -lelf
HOSTLOADLIBES_tc_l2_redirect += -l elf
HOSTLOADLIBES_lwt_len_hist += -l elf
HOSTLOADLIBES_xdp_tx_iptunnel += -lelf
HOSTLOADLIBES_test_map_in_map += -lelf
# 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
# Trick to allow make to be run from this directory
all:
$(MAKE) -C ../../ $(CURDIR)/
clean:
$(MAKE) -C ../../ M=$(CURDIR) clean
@rm -f *~
$(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
$(src)/*.c: verify_target_bpf
$(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
$(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) -I$(obj) \
-I$(srctree)/tools/testing/selftests/bpf/ \
-D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \
-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 \
-O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@