sys: Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

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linuxkpi: Define `seq_has_overflowed()` and `single_open_size()`

This required non-trivial changes to `linux_seq_file.c` to manage a new
`(struct seq_file)->size` field. This field is read directly

linuxkpi: Define `seq_has_overflowed()` and `single_open_size()`

This required non-trivial changes to `linux_seq_file.c` to manage a new
`(struct seq_file)->size` field. This field is read directly by DRM
drivers, so we can't alias it to a call to sbuf_len(9).

`single_open_size()` also depended on the ability to allocate the sbuf
with a specified size instead of relying on `sbuf_new_auto()`.

Reviewed by: manu
Approved by: manu
Differential Revision: https://reviews.freebsd.org/D39056

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linuxkpi: seq_read: Fix off by one error

strscpy needs the buffer length not the string length (so including
the '\0').

Reviewed by: bz
Fixes: f697b9432d9c ("linuxkpi: drm-kmod debugfs support")
Sp

linuxkpi: seq_read: Fix off by one error

strscpy needs the buffer length not the string length (so including
the '\0').

Reviewed by: bz
Fixes: f697b9432d9c ("linuxkpi: drm-kmod debugfs support")
Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D37771

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LinuxKPI: seq_file add "private" versions.

Add __seq_open_private() and seq_release_private() needed by iwlwifi
debugfs support.

Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Reviewed by:

LinuxKPI: seq_file add "private" versions.

Add __seq_open_private() and seq_release_private() needed by iwlwifi
debugfs support.

Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D37089

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linuxkpi: Resolve duplicate global symbol name to fix LINT kernel build.

seq_printf() is defined in both spl_procfs_list.c and linux_seq_file.c .
Fix this by renaming the LinuxKPI ones and use macro

linuxkpi: Resolve duplicate global symbol name to fix LINT kernel build.

seq_printf() is defined in both spl_procfs_list.c and linux_seq_file.c .
Fix this by renaming the LinuxKPI ones and use macros to invoke the
correct function.

Reported by: jfree@
Differential Revision: https://reviews.freebsd.org/D35883
MFC after: 1 week
Sponsored by: NVIDIA Networking

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linuxkpi: drm-kmod debugfs support

This diff extends LinuxKPI to support simple attribute files in debugfs.
These simple attributes are an essential component for compiling drm-kmod
with CONFIG_DEBU

linuxkpi: drm-kmod debugfs support

This diff extends LinuxKPI to support simple attribute files in debugfs.
These simple attributes are an essential component for compiling drm-kmod
with CONFIG_DEBUG_FS enabled.
This will allow for easier graphics driver debugging using
Intel's igt-gpu-tools.

Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D35883
Sponsored by: Google, Inc. (GSoC 2022)

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lindebugfs: Make single_release() NULL safe.

MFC after: 1 week
Sponsored by: NVIDIA Networking

compat: clean up empty lines in .c and .h files

import linux debugfs support

Reviewed by: hps@
MFC after: 1 week
Sponsored by: iX Systems
Differential Revision: https://reviews.freebsd.org/D19258