linux-stable.git/tools/testing/selftests/hid/Makefile, branch linux-6.3.y

selftests: hid: allow to compile hid_bpf with LLVM

2023-01-18T21:08:38+00:00

clang doesn't like to compile a source to the final binary directly:

clang-14: error: cannot specify -o when generating multiple output files

So split the final rule in 2, and ensure we compile all dependencies
before.

Signed-off-by: Benjamin Tissoires 
Signed-off-by: Jiri Kosina

kselftests: hid: fix missing headers_install step

2022-12-10T09:41:42+00:00

The Makefile was assuming that headers_install was already done in
the top source directory, and was searching for installed uapi headers
there.
Unfortunately this is not the case and we need to manually call that step.

To do so, reorder the declaration of the variables, and reuses top_srcdir
provided by lib.mk

Reported-by: kernel test robot 
Link: https://lore.kernel.org/all/202212060216.a6X8Py5H-lkp@intel.com/#t
Signed-off-by: Benjamin Tissoires 
Reviewed-by: Jiri Kosina 
Link: https://lore.kernel.org/r/20221206145936.922196-6-benjamin.tissoires@redhat.com

selftests: add tests for the HID-bpf initial implementation

2022-11-15T15:28:29+00:00

The tests are pretty basic:
- create a virtual uhid device that no userspace will like (to not mess
  up the running system)
- attach a BPF prog to it
- open the matching hidraw node
- inject one event and check:
  * that the BPF program can do something on the event stream
  * can modify the event stream
- add another test where we attach/detach BPF programs to see if we get
  errors

Note: the Makefile is extracted from selftests/bpf so we can rebuild
the libbpf and bpftool components from the current kernel tree without
relying on system installed components.

Signed-off-by: Benjamin Tissoires 
Signed-off-by: Jiri Kosina