LinuxKPI: Add __diag macros

__diag macros turn individual warnings and errors on and off locally,
depending on version of compiler. Add dummy implementation as drm-kmod
set warnings separately for e

LinuxKPI: Add __diag macros

__diag macros turn individual warnings and errors on and off locally,
depending on version of compiler. Add dummy implementation as drm-kmod
set warnings separately for each file.

Sponsored by: Serenity Cyber Security, LLC
MFC after: 1 week
Reviewed by: manu, emaste
Differential Revision: https://reviews.freebsd.org/D45842

(cherry picked from commit 742088d9fb545296c8677119757a967141ba7d4a)

show more ...

LinuxKPI: Import vanilla linux/overflow.h

It is dual-licensed (GPLv2 & MIT) and self-contained header file.
No need to reimplement it.

Sponsored by: Serenity CyberSecurity, LLC
Reviewed by: emaste

LinuxKPI: Import vanilla linux/overflow.h

It is dual-licensed (GPLv2 & MIT) and self-contained header file.
No need to reimplement it.

Sponsored by: Serenity CyberSecurity, LLC
Reviewed by: emaste
MFC after: 1 week

(cherry picked from commit 3208d4ad2b8320a24af4a8293f7fd3ef9c35caa6)

show more ...

LinuxKPI: add __counted_by() and __nonstring

Add checks for __counted_by(_x) and __nonstring as and depending
on compiler support enable the attribute/feature.

This is needed to make mtk76 and ath1

LinuxKPI: add __counted_by() and __nonstring

Add checks for __counted_by(_x) and __nonstring as and depending
on compiler support enable the attribute/feature.

This is needed to make mtk76 and ath1xk drivers compile.

Sposnored by: The FreeBSD Foundation
Reviewed by: emaste, dim
Differential Revision: https://reviews.freebsd.org/D44587

(cherry picked from commit 2a8c50592f7fce8bceedf004f674a5a9eae0fd46)

show more ...

sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

LinuxKPI: fix WRITE_ONCE(), remove ACCESS_ONCE()

Fix a gcc warning: "to be safe all intermediate pointers in cast from
'...' to '...' must be 'const' qualified [-Wcast-qual]".
Doing what is essentia

LinuxKPI: fix WRITE_ONCE(), remove ACCESS_ONCE()

Fix a gcc warning: "to be safe all intermediate pointers in cast from
'...' to '...' must be 'const' qualified [-Wcast-qual]".
Doing what is essentially a __DECONST() adding the uintptr_t gets
rid of the massive amount of warnings we get in LinuxKPI and lets
us see the actual problems a lot better.
This is a follow-up to 74e908b3c63b28de1d590dc42502fbe959a6da2e which
fixed READ_ONCE().
ACCESS_ONCE() seems to be an obsolete KPI these days in Linux and
FreeBSD does not use it either directly so we can entirely remove
it now.

Sponsored by: The FreeBSD Foundation
Suggested by: jhb
Reviewed by: hselasky
MFC after: 10 days
Differential Revision: https://reviews.freebsd.org/D40084

show more ...

LinuxKPI: Define noinline_for_stack compiler attribute

It is identical to noinline and used for documentation reasons.

Required by: drm-kmod 5.15-lts
Reviewed by: manu
Differential Revision: https:

LinuxKPI: Define noinline_for_stack compiler attribute

It is identical to noinline and used for documentation reasons.

Required by: drm-kmod 5.15-lts
Reviewed by: manu
Differential Revision: https://reviews.freebsd.org/D39553

show more ...

LinuxKPI: fix READ_ONCE() -Wcast-equal warnings

Rather than using ACCESS_ONCE() in READ_ONCE() add a missing cast
to const in order to satisfy -Wcast-equal by gcc.
Sadly we cannot do the same to WRI

LinuxKPI: fix READ_ONCE() -Wcast-equal warnings

Rather than using ACCESS_ONCE() in READ_ONCE() add a missing cast
to const in order to satisfy -Wcast-equal by gcc.
Sadly we cannot do the same to WRITE_ONCE() which still is very
noisy.

Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D39706

show more ...

LinuxKPI: add sizeof_field()

Add sizeof_field() to linux/compiler.h needed by a driver.

MFC after: 3 days
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D34226

LinuxKPI: Constantly use _LINUXKPI_ prefix in include guards

MFC after: 1 week
Reviewed by: bz, emaste, hselasky, manu
Differential Revision: https://reviews.freebsd.org/D33562

LinuxKPI: Implement smp_*mb barriers with atomic_thread_fence_*

for x86 and move them to asm/barrier.h

MFC after: 1 week
Reviewed by: bz, hselasky, manu
Differential Revision: https://reviews.freeb

LinuxKPI: Implement smp_*mb barriers with atomic_thread_fence_*

for x86 and move them to asm/barrier.h

MFC after: 1 week
Reviewed by: bz, hselasky, manu
Differential Revision: https://reviews.freebsd.org/D33296

show more ...

LinuxKPI: compiler.h add three more defines

Add fallthrough, ____cacheline_aligned_in_smp, and smp_mb() to
linux/compiler.h.

Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Reviewed by: hse

LinuxKPI: compiler.h add three more defines

Add fallthrough, ____cacheline_aligned_in_smp, and smp_mb() to
linux/compiler.h.

Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D30420

show more ...

LinuxKPI: extract stringify() in their own header file

Add linux/stringify.h as directly included by drivers. Remove the
definitions from compiler.h and include the new header in places
where the s

LinuxKPI: extract stringify() in their own header file

Add linux/stringify.h as directly included by drivers. Remove the
definitions from compiler.h and include the new header in places
where the stringify macros are already used without linuxkpi.

I have adjusted the Copyright of the new file according to the commit
originaly adding the macros (99e690772adbcb78c9e8441bedcf1913d72ea72f).

Sposnored by: The FreeBSD Foundation
MFC after: 2 weeks
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D30440

show more ...

LinuxKPI: remove < 5.0 version support

We are not aware of any out-of-tree consumers anymore
which would need KPI support for before Linux version 5.
Update the two in-tree consumers to use the new

LinuxKPI: remove < 5.0 version support

We are not aware of any out-of-tree consumers anymore
which would need KPI support for before Linux version 5.
Update the two in-tree consumers to use the new KPI.
This allows us to remove the extra version check and
will also give access to {lower,upper}_32_bits() unconditionally.

Sponsored-by: The FreeBSD Foundation
Reviewed-by: hselasky, rlibby, rstone
MFC-after: 2 weeks
X-MFC: to 13 only
Differential Revision: https://reviews.freebsd.org/D29391

show more ...

linuxkpi: Add __same_type and __must_be_array macros

The same_type macro simply wraps around builtin_types_compatible_p which
exist for both GCC and CLANG, which returns 1 if both types are the same

linuxkpi: Add __same_type and __must_be_array macros

The same_type macro simply wraps around builtin_types_compatible_p which
exist for both GCC and CLANG, which returns 1 if both types are the same.
The __must_be_array macros returns 1 if the argument is an array.

This is needed for DRM v5.3

Sponsored-by: The FreeBSD Foundation
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D24953

show more ...

Revert r355760, r355759

And remove the inline/deprecated attribute use entirely in stdlib.h, from
r355747. The intent was to provide a buildable API transitionary period, but
clearly that was count

Revert r355760, r355759

And remove the inline/deprecated attribute use entirely in stdlib.h, from
r355747. The intent was to provide a buildable API transitionary period, but
clearly that was counter-productive.

Reported by: delphij, imp, others

show more ...

linuxkpi: Drop incompatible __deprecated definition

Probably all of these linuxkpi stubs should be '#ifndef' guarded, but maybe
that would prevent people from noticing when they are defined.

Introd

linuxkpi: Drop incompatible __deprecated definition

Probably all of these linuxkpi stubs should be '#ifndef' guarded, but maybe
that would prevent people from noticing when they are defined.

Introduced in r355759. For some reason I only ran a buildworld and not a
kernel. Mea culpa.

Reported by: Mark Millard
X-MFC-with: r355759

show more ...

LinuxKPI: Move {lower|upper}_32_bits macros from port to base.

This patch is part of D19565

Reviewed by: hps
Approved by: imp (mentor), hps
MFC after: 1 week

Define __initconst in the LinuxKPI.

Submitted by: Johannes Lundberg <[email protected]>
MFC after: 1 week
Sponsored by: Mellanox Technologies

linuxkpi whitespace cleanup

Reviewed by: hselasky, markj
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D14807

Define noinline and __maybe_unused macros in the LinuxKPI.

MFC after: 1 week
Submitted by: Johannes Lundberg <[email protected]>
Sponsored by: Mellanox Technologies
Sponsored by: Limelight Networks

Add support for __percpu and __weak macros in the LinuxKPI.

MFC after: 1 week
Submitted by: Johannes Lundberg <[email protected]>
Sponsored by: Mellanox Technologies

linuxkpi compiler.h: avoid gcc -Wunused-value in dummy expressions

It looks like the __acquire and __release macros are for the consumption
of static analysis tools and have no semantic effect. Tra

linuxkpi compiler.h: avoid gcc -Wunused-value in dummy expressions

It looks like the __acquire and __release macros are for the consumption
of static analysis tools and have no semantic effect. Transform the
definitions from constant expressions to empty statements in order to
avoid -Wunused-value from gcc.

Likewise avoid future warnings for __chk_{user,io}_ptr, but with a cast
to void, because it looks like some linux kernel code may use those in
expression contexts.

Reviewed by: hselasky, markj
Approved by: markj (mentor)
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D11695

show more ...

Add some miscellaneous definitions to support DRM drivers.

Reviewed by: hselasky
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D10985

The __stringify() macro in the LinuxKPI should expand any macros
before stringifying.

MFC after: 1 week
Sponsored by: Mellanox Technologies

Add support for constant pointer constructs to READ_ONCE() in the
LinuxKPI. When the type of the argument is constant the temporary
variable cannot be assigned after the barrier. Instead assign the
t

Add support for constant pointer constructs to READ_ONCE() in the
LinuxKPI. When the type of the argument is constant the temporary
variable cannot be assigned after the barrier. Instead assign the
temporary variable by initialization.

MFC after: 1 week
Sponsored by: Mellanox Technologies

show more ...