Commit Graph

3 Commits

Author SHA1 Message Date
Benjamin Tissoires
b7666c891c HID: bpf: fix bpf compilation with -fms-extensions
Similar to commit 835a507535 ("selftests/bpf: Add -fms-extensions to
bpf build flags") and commit 639f58a0f4 ("bpftool: Fix build warnings
due to MS extensions")

The kernel is now built with -fms-extensions, therefore
generated vmlinux.h contains types like:
struct slab {
   ..
   struct freelist_counters;
};

Use -fms-extensions and -Wno-microsoft-anon-tag flags
to build bpf programs that #include "vmlinux.h"

Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
2026-01-07 15:03:48 +01:00
Benjamin Tissoires
c94ae2189a HID: bpf: error on warnings when compiling bpf objects
There is no real reasons to paper over warnings for such small programs.

Link: https://lore.kernel.org/r/20240608-hid_bpf_struct_ops-v3-13-6ac6ade58329@kernel.org
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
2024-06-14 11:20:20 +02:00
Benjamin Tissoires
04b3e5ab05 HID: bpf: add first in-tree HID-BPF fix for the XPPen Artist 24
This commit adds a fix for XPPen Artist 24 where the second button on
the pen is used as an eraser.

It's a "feature" from Microsoft, but it turns out that it's actually
painful for artists. So we ship here a HID-BPF program that turns this
second button into an actual button.

Note that the HID-BPF program is not directly loaded by the kernel itself
but by udev-hid-bpf[0]. But having the sources here allows us to also
integrate tests into tools/testing/selftests/hid to ensure the HID-BPF
program are actually tested.

[0] https://gitlab.freedesktop.org/libevdev/udev-hid-bpf

Link: https://lore.kernel.org/r/20240410-bpf_sources-v1-2-a8bf16033ef8@kernel.org
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
2024-05-07 15:38:53 +02:00