Changes in Makefile

b40ba139371c2ba4beffe0533c6d85fda9bc932c - tools/bpf: build: Append extra cflags

Tue, 02 Jun 2026 16:47:14 +0200

tools/bpf: build: Append extra cflagsAppend EXTRA_CFLAGS to CFLAGS so that additional flags can be applied tothe compiler.Signed-off-by: Leo Yan Acked-by: Ihor Solodrai Link: https://lore.kernel.org/r/20260602-tools_build_fix_zero_init_bpf_only-v2-5-c76e5250ea1c@arm.comSigned-off-by: Alexei Starovoitov List of files: /linux/tools/bpf/Makefile

bd5bdd200c9e981cd5e2495966968cb26010573c - bpf: Remove runqslower tool

Wed, 26 Nov 2025 10:38:11 +0100

bpf: Remove runqslower toolrunqslower was added in commit 9c01546d26d2 "tools/bpf: Add runqslowertool to tools/bpf" as a BCC port to showcase early BPF CO-RE + libbpfworkflows. runqslower continues to live in BCC (libbpf-tools), so thereis no need to keep building and maintaining it.Drop tools/bpf/runqslower and remove all build hooks in tools/bpf andselftests accordingly.Signed-off-by: Hoyeon Lee Link: https://lore.kernel.org/r/20251126093821.373291-1-hoyeon.lee@suse.comSigned-off-by: Alexei Starovoitov List of files: /linux/tools/bpf/Makefile

42367eca7604e16e170bd6bd94ef61ffdd335f4a - tools: Remove redundant quiet setup

Thu, 13 Feb 2025 22:06:22 +0100

tools: Remove redundant quiet setupQ is exported from Makefile.include so it is not necessary to manuallyset it.Reviewed-by: Jiri Olsa Signed-off-by: Charlie Jenkins Acked-by: Andrii Nakryiko Acked-by: Quentin Monnet Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Alexei Starovoitov Cc: Benjamin Tissoires Cc: Daniel Borkmann Cc: Daniel Lezcano Cc: Eduard Zingerman Cc: Hao Luo Cc: Ian Rogers Cc: Ingo Molnar Cc: Jiri Kosina Cc: John Fastabend Cc: Josh Poimboeuf Cc: KP Singh Cc: Lukasz Luba Cc: Mark Rutland Cc: Martin KaFai Lau Cc: Mykola Lysenko Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Rafael J. Wysocki Cc: Shuah Khan Cc: Song Liu Cc: Stanislav Fomichev Cc: Steven Rostedt (VMware) Cc: Yonghong Song Cc: Zhang Rui Link: https://lore.kernel.org/r/20250213-quiet_tools-v3-2-07de4482a581@rivosinc.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/bpf/Makefile

bab211f637dc52cfbae1f0f15a6aef71d7f35a1b - tools bpf_jit_disasm: Don't display disassembler-four-args feature test

Mon, 01 Aug 2022 03:38:32 +0200

tools bpf_jit_disasm: Don't display disassembler-four-args feature testThe feature check does not seem important enough to display.Suggested-by: Jiri Olsa Signed-off-by: Andres Freund Acked-by: Quentin Monnet Cc: Alexei Starovoitov Cc: Ben Hutchings Cc: Daniel Borkmann Cc: Quentin Monnet Cc: Sedat Dilek Cc: bpf@vger.kernel.orgLink: http://lore.kernel.org/lkml/20220622181918.ykrs5rsnmx3og4sv@alap3.anarazel.deLink: https://lore.kernel.org/r/20220801013834.156015-7-andres@anarazel.deSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/bpf/Makefile

96ed066054abf11c7d3e106e3011a51f3f1227a3 - tools bpf_jit_disasm: Fix compilation error with new binutils

Mon, 01 Aug 2022 03:38:31 +0200

tools bpf_jit_disasm: Fix compilation error with new binutilsbinutils changed the signature of init_disassemble_info(), which now causescompilation to fail for tools/bpf/bpf_jit_disasm.c, e.g. on debianunstable.Relevant binutils commit: https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=60a3da00bd5407f07Wire up the feature test and switch to init_disassemble_info_compat(),which were introduced in prior commits, fixing the compilation failure.I verified that bpf_jit_disasm can still disassemble bpf programs, bothwith the old and new dis-asm.h API. With old binutils there's no change inoutput before/after this patch. When comparing the output from oldbinutils (2.35) to new bintuils with the patch (upstream snapshot) thereare a few output differences, but they are unrelated to this patch. Anexample hunk is: f4: mov %r14,%rsi f7: mov %r15,%rdx fa: mov $0x2a,%ecx - ff: callq 0xffffffffea8c4988 + ff: call 0xffffffffea8c4988 104: test %rax,%rax 107: jge 0x0000000000000110 109: xor %eax,%eax - 10b: jmpq 0x0000000000000073 + 10b: jmp 0x0000000000000073 110: cmp $0x16,%raxHowever, I had to use an older kernel to generate the bpf_jit_enabled =2 output, as that has been broken since 5.18 / 1022a5498f6f745c ("bpf,x86_64: Use bpf_jit_binary_pack_alloc"). https://lore.kernel.org/20220703030210.pmjft7qc2eajzi6c@alap3.anarazel.deSigned-off-by: Andres Freund Acked-by: Quentin Monnet Cc: Alexei Starovoitov Cc: Ben Hutchings Cc: Daniel Borkmann Cc: Jiri Olsa Cc: Quentin Monnet Cc: Sedat Dilek Cc: bpf@vger.kernel.orgLink: http://lore.kernel.org/lkml/20220622181918.ykrs5rsnmx3og4sv@alap3.anarazel.deLink: https://lore.kernel.org/r/20220801013834.156015-6-andres@anarazel.deSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/bpf/Makefile

1d719254c139fb62fb8056fb496b6fd007e71550 - tools: bpf: Fix error in 'make -C tools/ bpf_install'

Mon, 28 Jun 2021 05:04:09 +0200

tools: bpf: Fix error in 'make -C tools/ bpf_install'make[2]: *** No rule to make target 'install'. Stop.make[1]: *** [Makefile:122: runqslower_install] Error 2make: *** [Makefile:116: bpf_install] Error 2There is no rule for target 'install' in tools/bpf/runqslower/Makefile,and there is no need to install it, so just remove 'runqslower_install'.Fixes: 9c01546d26d2 ("tools/bpf: Add runqslower tool to tools/bpf")Signed-off-by: Wei Li Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20210628030409.3459095-1-liwei391@huawei.com List of files: /linux/tools/bpf/Makefile

1eb832ac2dee8a350f3fcd5544886f07a3ef8869 - tools/bpf: build: Make sure resolve_btfids cleans up after itself

Tue, 01 Sep 2020 16:43:43 +0200

tools/bpf: build: Make sure resolve_btfids cleans up after itselfThe new resolve_btfids tool did not clean up the feature detection folderon 'make clean', and also was not called properly from the clean rule intools/make/ folder on its 'make clean'. This lead to stale objects beingleft around, which could cause feature detection to fail on subsequentbuilds.Fixes: fbbb68de80a4 ("bpf: Add resolve_btfids tool to resolve BTF IDs in ELF object")Signed-off-by: Toke Høiland-Jørgensen Signed-off-by: Daniel Borkmann Acked-by: Jiri Olsa Link: https://lore.kernel.org/bpf/20200901144343.179552-1-toke@redhat.com List of files: /linux/tools/bpf/Makefile

47ec5303d73ea344e84f46660fff693c57641386 - Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Thu, 06 Aug 2020 05:13:21 +0200

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextPull networking updates from David Miller: 1) Support 6Ghz band in ath11k driver, from Rajkumar Manoharan. 2) Support UDP segmentation in code TSO code, from Eric Dumazet. 3) Allow flashing different flash images in cxgb4 driver, from Vishal Kulkarni. 4) Add drop frames counter and flow status to tc flower offloading, from Po Liu. 5) Support n-tuple filters in cxgb4, from Vishal Kulkarni. 6) Various new indirect call avoidance, from Eric Dumazet and Brian Vazquez. 7) Fix BPF verifier failures on 32-bit pointer arithmetic, from Yonghong Song. 8) Support querying and setting hardware address of a port function via devlink, use this in mlx5, from Parav Pandit. 9) Support hw ipsec offload on bonding slaves, from Jarod Wilson.10) Switch qca8k driver over to phylink, from Jonathan McDowell.11) In bpftool, show list of processes holding BPF FD references to maps, programs, links, and btf objects. From Andrii Nakryiko.12) Several conversions over to generic power management, from Vaibhav Gupta.13) Add support for SO_KEEPALIVE et al. to bpf_setsockopt(), from Dmitry Yakunin.14) Various https url conversions, from Alexander A. Klimov.15) Timestamping and PHC support for mscc PHY driver, from Antoine Tenart.16) Support bpf iterating over tcp and udp sockets, from Yonghong Song.17) Support 5GBASE-T i40e NICs, from Aleksandr Loktionov.18) Add kTLS RX HW offload support to mlx5e, from Tariq Toukan.19) Fix the ->ndo_start_xmit() return type to be netdev_tx_t in several drivers. From Luc Van Oostenryck.20) XDP support for xen-netfront, from Denis Kirjanov.21) Support receive buffer autotuning in MPTCP, from Florian Westphal.22) Support EF100 chip in sfc driver, from Edward Cree.23) Add XDP support to mvpp2 driver, from Matteo Croce.24) Support MPTCP in sock_diag, from Paolo Abeni.25) Commonize UDP tunnel offloading code by creating udp_tunnel_nic infrastructure, from Jakub Kicinski.26) Several pci_ --> dma_ API conversions, from Christophe JAILLET.27) Add FLOW_ACTION_POLICE support to mlxsw, from Ido Schimmel.28) Add SK_LOOKUP bpf program type, from Jakub Sitnicki.29) Refactor a lot of networking socket option handling code in order to avoid set_fs() calls, from Christoph Hellwig.30) Add rfc4884 support to icmp code, from Willem de Bruijn.31) Support TBF offload in dpaa2-eth driver, from Ioana Ciornei.32) Support XDP_REDIRECT in qede driver, from Alexander Lobakin.33) Support PCI relaxed ordering in mlx5 driver, from Aya Levin.34) Support TCP syncookies in MPTCP, from Flowian Westphal.35) Fix several tricky cases of PMTU handling wrt. briding, from Stefano Brivio.* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2056 commits) net: thunderx: initialize VF's mailbox mutex before first usage usb: hso: remove bogus check for EINPROGRESS usb: hso: no complaint about kmalloc failure hso: fix bailout in error case of probe ip_tunnel_core: Fix build for archs without _HAVE_ARCH_IPV6_CSUM selftests/net: relax cpu affinity requirement in msg_zerocopy test mptcp: be careful on subflow creation selftests: rtnetlink: make kci_test_encap() return sub-test result selftests: rtnetlink: correct the final return value for the test net: dsa: sja1105: use detected device id instead of DT one on mismatch tipc: set ub->ifindex for local ipv6 address ipv6: add ipv6_dev_find() net: openvswitch: silence suspicious RCU usage warning Revert "vxlan: fix tos value before xmit" ptp: only allow phase values lower than 1 period farsync: switch from 'pci_' to 'dma_' API wan: wanxl: switch from 'pci_' to 'dma_' API hv_netvsc: do not use VF device if link is down dpaa2-eth: Fix passing zero to 'PTR_ERR' warning net: macb: Properly handle phylink on at91sam9x ... List of files: /linux/tools/bpf/Makefile

f143c11bb7b924403ea2d5b5c990717772293620 - tools: bpf: Use local copy of headers including uapi/linux/filter.h

Thu, 21 Nov 2019 13:41:40 +0100

tools: bpf: Use local copy of headers including uapi/linux/filter.hPulling header files directly out of the kernel sources for inclusion inuserspace programs is highly error prone, not least because it bypassesthe kbuild infrastructure entirely and so may end up referencing otherheader files that have not been generated.Subsequent patches will cause compiler.h to pull in the ungeneratedasm/rwonce.h file via filter.h, breaking the build for tools/bpf: | $ make -C tools/bpf | make: Entering directory '/linux/tools/bpf' | CC bpf_jit_disasm.o | LINK bpf_jit_disasm | CC bpf_dbg.o | In file included from /linux/include/uapi/linux/filter.h:9, | from /linux/tools/bpf/bpf_dbg.c:41: | /linux/include/linux/compiler.h:247:10: fatal error: asm/rwonce.h: No such file or directory | #include | ^~~~~~~~~~~~~~ | compilation terminated. | make: *** [Makefile:61: bpf_dbg.o] Error 1 | make: Leaving directory '/linux/tools/bpf'Take a copy of the installed version of linux/filter.h (i.e. the onecreated by the 'headers_install' target) into tools/include/uapi/linux/and adjust the BPF tool Makefile to reference the local includedirectories instead of those in the main source tree.Cc: Masahiro Yamada Acked-by: Peter Zijlstra (Intel) Acked-by: Alexei Starovoitov Suggested-by: Daniel Borkmann Reported-by: Xiao Yang Signed-off-by: Will Deacon List of files: /linux/tools/bpf/Makefile

33a57ce0a54d498275f432db04850001175dfdfa - bpf: Compile resolve_btfids tool at kernel compilation start

Sat, 11 Jul 2020 23:53:22 +0200

bpf: Compile resolve_btfids tool at kernel compilation startThe resolve_btfids tool will be used during the vmlinux linking,so it's necessary it's ready for it.Signed-off-by: Jiri Olsa Signed-off-by: Alexei Starovoitov Tested-by: Andrii Nakryiko Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20200711215329.41165-3-jolsa@kernel.org List of files: /linux/tools/bpf/Makefile

47f6bc4ce1ff70d7ba0924c2f1c218c96cd585fb - tools, bpf: Do not force gcc as CC

Tue, 09 Jun 2020 23:35:06 +0200

tools, bpf: Do not force gcc as CCThis allows transparent cross-compilation with CROSS_COMPILE byrelying on 7ed1c1901fe5 ("tools: fix cross-compile var clobbering").Same change was applied to tools/bpf/bpftool/Makefile in9e88b9312acb ("tools: bpftool: do not force gcc as CC").Signed-off-by: Brett Mastbergen Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20200609213506.3299-1-brett.mastbergen@gmail.com List of files: /linux/tools/bpf/Makefile

d70a6be1e2ab98f13688e4a529b326e8e11230d0 - tools/bpf: Don't use $(COMPILE.c)

Tue, 02 Jun 2020 19:56:48 +0200

tools/bpf: Don't use $(COMPILE.c)When using make kselftest TARGETS=bpf, tools/bpf is built withMAKEFLAGS=rR, which causes $(COMPILE.c) to be undefined, which in turncauses the build to fail with CC kselftest/bpf/tools/build/bpftool/map_perf_ring.o/bin/sh: 1: -MMD: not foundFix by using $(CC) $(CFLAGS) -c instead of $(COMPILE.c).Signed-off-by: Ilya Leoshkevich Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20200602175649.2501580-2-iii@linux.ibm.com List of files: /linux/tools/bpf/Makefile

9c01546d26d28cf57341d8380ba900bf68e26b18 - tools/bpf: Add runqslower tool to tools/bpf

Mon, 13 Jan 2020 08:31:42 +0100

tools/bpf: Add runqslower tool to tools/bpfConvert one of BCC tools (runqslower [0]) to BPF CO-RE + libbpf. It matchesits BCC-based counterpart 1-to-1, supporting all the same parameters andfunctionality.runqslower tool utilizes BPF skeleton, auto-generated from BPF object file,as well as memory-mapped interface to global (read-only, in this case) data.Its Makefile also ensures auto-generation of "relocatable" vmlinux.h, which isnecessary for BTF-typed raw tracepoints with direct memory access. [0] https://github.com/iovisor/bcc/blob/11bf5d02c895df9646c117c713082eb192825293/tools/runqslower.pySigned-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20200113073143.1779940-6-andriin@fb.com List of files: /linux/tools/bpf/Makefile

a89b2cbf71d64b61e79bbe5cb7ff4664797eeaaf - tools, bpf: Fix build for 'make -s tools/bpf O='

Tue, 19 Nov 2019 11:56:26 +0100

tools, bpf: Fix build for 'make -s tools/bpf O='Building selftests with 'make TARGETS=bpf kselftest' was fixed in commit55d554f5d140 ("tools: bpf: Use !building_out_of_srctree to determinesrctree"). However, by updating $(srctree) in tools/bpf/Makefile forin-tree builds only, we leave out the case where we pass an outputdirectory to build BPF tools, but $(srctree) is not set. Thistypically happens for: $ make -s tools/bpf O=/tmp/foo Makefile:40: /tools/build/Makefile.feature: No such file or directoryFix it by updating $(srctree) in the Makefile not only for out-of-treebuilds, but also if $(srctree) is empty.Detected with test_bpftool_build.sh.Fixes: 55d554f5d140 ("tools: bpf: Use !building_out_of_srctree to determine srctree")Signed-off-by: Quentin Monnet Signed-off-by: Daniel Borkmann Acked-by: Jakub Kicinski Link: https://lore.kernel.org/bpf/20191119105626.21453-1-quentin.monnet@netronome.com List of files: /linux/tools/bpf/Makefile

55d554f5d14071f7c2c5dbd88d0a2eb695c97d16 - tools: bpf: Use !building_out_of_srctree to determine srctree

Fri, 27 Sep 2019 03:13:44 +0200

tools: bpf: Use !building_out_of_srctree to determine srctreemake TARGETS=bpf kselftest fails with:Makefile:127: tools/build/Makefile.include: No such file or directoryWhen the bpf tool make is invoked from tools Makefile, srctree iscleared and the current logic check for srctree equals to emptystring to determine srctree location from CURDIR.When the build in invoked from selftests/bpf Makefile, the srctreeis set to "." and the same logic used for srctree equals to empty isneeded to determine srctree.Check building_out_of_srctree undefined as the condition for bothcases to fix "make TARGETS=bpf kselftest" build failure.Signed-off-by: Shuah Khan Signed-off-by: Daniel Borkmann Acked-by: Song Liu Link: https://lore.kernel.org/bpf/20190927011344.4695-1-skhan@linuxfoundation.org List of files: /linux/tools/bpf/Makefile

fbdb620b7c674928a5713dbad9b07252ff929d0a - tools: bpf: account for generated feature/ and libbpf/ directories

Fri, 30 Aug 2019 13:00:39 +0200

tools: bpf: account for generated feature/ and libbpf/ directoriesWhen building "tools/bpf" from the top of the Linux repository, thebuild system passes a value for the $(OUTPUT) Makefile variable totools/bpf/Makefile and tools/bpf/bpftool/Makefile, which results ingenerating "libbpf/" (for bpftool) and "feature/" (bpf and bpftool)directories inside the tree.This commit adds such directories to the relevant .gitignore files, andedits the Makefiles to ensure they are removed on "make clean". The useof "rm" is also made consistent throughout those Makefiles (relies onthe $(RM) variable, use "--" to prevent interpreting$(OUTPUT)/$(DESTDIR) as options.v2:- New patch.Signed-off-by: Quentin Monnet Signed-off-by: Daniel Borkmann List of files: /linux/tools/bpf/Makefile

9c299a32ede98dc9faafb267034ed830a15304db - bpf: fix for lex/yacc build error with gcc-5

Wed, 25 Apr 2018 23:22:45 +0200

bpf: fix for lex/yacc build error with gcc-5Fix build error found with Ubuntu shipped gcc-5~/git/bpf/tools/bpf$ make allAuto-detecting system features:... libbfd: [ OFF ]... disassembler-four-args: [ OFF ] CC bpf_jit_disasm.o LINK bpf_jit_disasm CC bpf_dbg.o/home/john/git/bpf/tools/bpf/bpf_dbg.c: In function ‘cmd_load’:/home/john/git/bpf/tools/bpf/bpf_dbg.c:1077:13: warning: ‘cont’ may be used uninitialized in this function [-Wmaybe-uninitialized] } else if (matches(subcmd, "pcap") == 0) { ^ LINK bpf_dbg CC bpf_asm.omake: *** No rule to make target `bpf_exp.yacc.o', needed by `bpf_asm'. Stop.Fixes: 5a8997f20715 ("tools: bpf: respect output directory during build")Signed-off-by: John Fastabend Signed-off-by: Daniel Borkmann List of files: /linux/tools/bpf/Makefile

cc5b3403f0248ca5f40539d33f0e127ccca25dd2 - tools: bpf: remove feature detection output

Fri, 16 Mar 2018 07:26:17 +0100

tools: bpf: remove feature detection outputbpf tools use feature detection for libbfd dependency, clean upthe output files on make clean.Signed-off-by: Jakub Kicinski Signed-off-by: Daniel Borkmann List of files: /linux/tools/bpf/Makefile

8050ea4653c21e14681d9e00390c6886556a2640 - tools: bpf: cleanup PHONY target

Fri, 16 Mar 2018 07:26:16 +0100

tools: bpf: cleanup PHONY targetThere is no FORCE target in the Makefile and some of the PHONYtargets are missing, update the list.Signed-off-by: Jakub Kicinski Signed-off-by: Daniel Borkmann List of files: /linux/tools/bpf/Makefile

ef8ba83b7cf6c530fbb2c83cf87f9755b8424a84 - tools: bpf: silence make by not deleting intermediate file

Thu, 08 Mar 2018 23:00:41 +0100

tools: bpf: silence make by not deleting intermediate fileEven in quiet mode, make finishes withrm tools/bpf/bpf_exp.lex.cThat's because it considers the file to be intermediate. Silence that bymentioning the lex.c file instead of the lex.o file; the dependency stillstays.Signed-off-by: Jiri Benc Signed-off-by: Daniel Borkmann List of files: /linux/tools/bpf/Makefile