Changes in Makefile

8b125949 - samples/hid: fix broken vmlinux path for VMLINUX_BTF

Mon, 03 Feb 2025 08:55:06 +0000

samples/hid: fix broken vmlinux path for VMLINUX_BTFCommit 13b25489b6f8 ("kbuild: change working directory to externalmodule directory with M=") changed kbuild working directory of hid-bpfsample programs to samples/hid, which broke the vmlinux path forVMLINUX_BTF, as the Makefiles assume the current work directory to bethe kernel output directory and use a relative path (i.e., ./vmlinux): Makefile:173: *** Cannot find a vmlinux for VMLINUX_BTF at any of " /path/to/linux/samples/hid/vmlinux", build the kernel or set VMLINUX_BTF or VMLINUX_H variable. Stop.Correctly refer to the kernel output directory using $(objtree).Fixes: 13b25489b6f8 ("kbuild: change working directory to external module directory with M=")Tested-by: Ruowen Qin Suggested-by: Daniel Borkmann Suggested-by: Andrii Nakryiko Signed-off-by: Jinghao Jia Link: https://patch.msgid.link/20250203085506.220297-4-jinghao7@illinois.eduSigned-off-by: Benjamin Tissoires List of files: /linux-6.15/samples/hid/Makefile

1739cafd - samples/hid: remove unnecessary -I flags from libbpf EXTRA_CFLAGS

Mon, 03 Feb 2025 08:55:04 +0000

samples/hid: remove unnecessary -I flags from libbpf EXTRA_CFLAGSCommit 5a6ea7022ff4 ("samples/bpf: Remove unnecessary -I flags fromlibbpf EXTRA_CFLAGS") fixed the build error caused by redundant includepath for samples/bpf, but not samples/hid.Apply the same fix on samples/hid as well.Fixes: 13b25489b6f8 ("kbuild: change working directory to external module directory with M=")Tested-by: Ruowen Qin Signed-off-by: Jinghao Jia Link: https://patch.msgid.link/20250203085506.220297-2-jinghao7@illinois.eduSigned-off-by: Benjamin Tissoires List of files: /linux-6.15/samples/hid/Makefile

e342d6f6 - HID: samples: convert the 2 HID-BPF samples into struct_ops

Sat, 08 Jun 2024 09:01:17 +0000

HID: samples: convert the 2 HID-BPF samples into struct_opsThis is mostly mechanical: attach_prog is dropped, andthe SEC are converted into struct_ops.Link: https://lore.kernel.org/r/20240608-hid_bpf_struct_ops-v3-5-6ac6ade58329@kernel.orgSigned-off-by: Benjamin Tissoires List of files: /linux-6.15/samples/hid/Makefile

b1992c37 - kbuild: use $(src) instead of $(srctree)/$(src) for source directory

Sat, 27 Apr 2024 14:55:02 +0000

kbuild: use $(src) instead of $(srctree)/$(src) for source directoryKbuild conventionally uses $(obj)/ for generated files, and $(src)/ forchecked-in source files. It is merely a convention without any functionaldifference. In fact, $(obj) and $(src) are exactly the same, as definedin scripts/Makefile.build: src := $(obj)When the kernel is built in a separate output directory, $(src) doesnot accurately reflect the source directory location. While Kbuildresolves this discrepancy by specifying VPATH=$(srctree) to search forsource files, it does not cover all cases. For example, when adding aheader search path for local headers, -I$(srctree)/$(src) is typicallypassed to the compiler.This introduces inconsistency between upstream and downstream Makefilesbecause $(src) is used instead of $(srctree)/$(src) for the latter.To address this inconsistency, this commit changes the semantics of$(src) so that it always points to the directory in the source tree.Going forward, the variables used in Makefiles will have the followingmeanings: $(obj) - directory in the object tree $(src) - directory in the source tree (changed by this commit) $(objtree) - the top of the kernel object tree $(srctree) - the top of the kernel source treeConsequently, $(srctree)/$(src) in upstream Makefiles need to be replacedwith $(src).Signed-off-by: Masahiro Yamada Reviewed-by: Nicolas Schier List of files: /linux-6.15/samples/hid/Makefile

bbaf1ff0 - bpf: Replace deprecated -target with --target= for Clang

Sat, 24 Jun 2023 00:18:56 +0000

bpf: Replace deprecated -target with --target= for ClangThe -target option has been deprecated since clang 3.4 in 2013. Therefore, usethe preferred --target=bpf form instead. This also matches how we use --target=in scripts/Makefile.clang.Signed-off-by: Fangrui Song Signed-off-by: Daniel Borkmann Acked-by: Yonghong Song Acked-by: Quentin Monnet Link: https://github.com/llvm/llvm-project/commit/274b6f0c87a6a1798de0a68135afc7f95def6277Link: https://lore.kernel.org/bpf/20230624001856.1903733-1-maskray@google.com List of files: /linux-6.15/samples/hid/Makefile

a56a2569 - samples/hid: add Surface Dial example

Thu, 03 Nov 2022 15:57:55 +0000

samples/hid: add Surface Dial exampleAdd a more complete HID-BPF example.Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina List of files: /linux-6.15/samples/hid/Makefile

6008105b - samples/hid: add new hid BPF example

Thu, 03 Nov 2022 15:57:54 +0000

samples/hid: add new hid BPF exampleEverything should be available in the selftest part of the tree, butproviding an example without uhid and hidraw will be more easy tofollow for users.This example will probably ever only work on the Etekcity Scroll 6Ebecause we need to adapt the various raw values to the actual device.On that device, the X and Y axis will be swapped and inverted, and onany other device, chances are high that the device will not work untilCtrl-C is hit.The Makefiles are taken from samples/bpf to not reinvent the wheel andto force using in-kernel libbpf and bpftool.Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina List of files: /linux-6.15/samples/hid/Makefile