src/sys/compat/linuxkpi/common/include/linux, branch main

linuxkpi: Pass a `const void *` to `krealloc()`

2026-04-21T22:18:26+00:00

This matches the API on Linux.

Reviewed by:	bz
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D56451

linuxkpi: Add `fop_flags` to `struct file_operations`

2026-04-21T22:18:26+00:00

... along with the `FOP_*` flag constants.

Note that this `fop_flags` field is not used on FreeBSD. It is added to
make the DRM drivers compile out of the box.

The DRM generic code and drivers started this in Linux 6.12.

Reviewed by:	bz
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D56450

linuxkpi: Include from

2026-04-21T22:18:26+00:00

The DRM generic code started to deppend on this indirect include of
 in Linux 6.12.

Reviewed by:	bz, emaste
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D56449

linuxkpi: Add several `guid_*()` functions

2026-04-21T22:18:25+00:00

The DRM generic code and the amdgpu DRM driver started to use several of
these functions in Linux 6.12. Likewise for `UUID_SIZE`.

Reviewed by:	bz
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D56448

linuxkpi: Define `MINORBITS`

2026-04-21T22:18:25+00:00

We can't really define a proper value for this constant because minor
and major are encoded in a complex way on FreeBSD which cannot be
represented with a simple shift.

The DRM generic code started to use it in Linux 6.12.

In this context, `MINORBITS` is used to define an upper limit passed to
`xa_alloc()`. Therefore it is not used to encode or decode minors. It is
used as an arbitrary value. Therefore, we define the constant to 20,
like on Linux.

Reviewed by:	bz
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D56447

linuxkpi: Define `sort_r()`

2026-04-21T22:18:25+00:00

Like Linux `sort()` and FreeBSD `qsort()`, `sort_r()` is a wrapper
around FreeBSD `qsort_r()`.

The i915 DRM driver started to use it in Linux 6.12.

Reviewed by:	bz
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D56437

linuxkpi: Define `__GFP_THISNODE`

2026-04-21T22:18:24+00:00

It is used to force the NUMA node to allocate from. This flag is
unimplemented for now because we don't have an implementation of
`alloc_pages_node()` yet.

The DRM TTM code started to use this flag in Linux 6.12.

Reviewed by:	bz
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D56436

linuxkpi: Define `dev_err_probe*()`

2026-04-21T22:18:24+00:00

They differ from other `dev_*()` logging functions by returning the
passed error code. The error code is also used to determine if the
message should be logged in the first place and at which log level.

The DRM generic code started to use it in Linux 6.12.

Reviewed by:	bz
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D56435

linuxkpi: Define diagnostic macros like `might_resched()` or `cant_sleep()`

2026-04-21T22:18:24+00:00

They are no-ops on FreeBSD.

While here, move the already defined `might_sleep*()` macros from
 to  where they belong.

The DRM generic code started to use `might_fault()` in Linux 6.12.

Reviewed by:	bz
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D56434

LinuxKPI: 802.11: set IEEE80211_MIN_ACTION_SIZE according to struct

2026-04-18T12:00:00+00:00

IEEE80211_MIN_ACTION_SIZE came up in the mt76 vendor subtree merge
as one of the non-mechanical changes which made me look.
Rather than (incorrectly) hand counting the offset from the beginning
of a frame, use the offset from the beginning of struct ieee80211_mgmt.

Sponsored by:	The FreeBSD Foundation
MFC after:	3 days