src/sys/compat/linux/linux_event.c, branch releng/15.0

linux(4): Convert flags in timerfd_create

2023-09-05T08:53:02+00:00

The timerfd is introduced in FreeBSD 14, and the Linux ABI timerfd is
also moved to FreeBSD native timerfd, but it can't work well as Linux
TFD_CLOEXEC and TFD_NONBLOCK haven't been converted to FreeBSD
TFD_CLOEXEC and TFD_NONBLOCK.

Reviewed by:		dchagin, jfree
Differential revision:	https://reviews.freebsd.org/D41708
MFC after:		1 week

timerfd: Move implementation from linux compat to sys/kern

2023-08-24T20:28:56+00:00

Move the timerfd impelemntation from linux compat code to sys/kern. Use
it to implement the new system calls for timerfd. Add a hook to kern_tc
to allow timerfd to know when the system time has stepped. Add kqueue
support to timerfd. Adjust a few names to be less Linux centric.

RelNotes: YES
Reviewed by: markj (on irc), imp, kib (with reservations), jhb (slack)
Differential Revision: https://reviews.freebsd.org/D38459

linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743

2023-08-18T10:12:02+00:00

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

2023-08-16T17:54:36+00:00

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

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

2023-05-12T16:44:03+00:00

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

linux(4): Rename linux_timer.h to linux_time.h

2023-02-14T14:46:33+00:00

To avoid confusing people, rename linux_timer.h to linux_time.h,
as linux_timer.c is the implementation of timer syscalls only,
while linux_time.c contains implementation of all stuff declared
in linux_time.h.

MFC after:		2 weeks

linux(4): Cleanup includes under compat/linux

2023-02-14T14:46:32+00:00

Cleanup unneeded includes, sort the rest according to style(9).
No functional changes.

MFC after:		2 weeks

linux(4): Get rid of the opt_compat.h include.

2023-02-12T17:24:32+00:00

Since e013e369 COMPAT_LINUX, COMPAT_LINUX32 build options are removed,
so include of opt_compat.h is no more needed.

MFC after:		2 weeks

AST: rework

2022-08-02T18:11:09+00:00

Make most AST handlers dynamically registered.  This allows to have
subsystem-specific handler source located in the subsystem files,
instead of making subr_trap.c aware of it.  For instance, signal
delivery code on return to userspace is now moved to kern_sig.c.

Also, it allows to have some handlers designated as the cleanup (kclear)
type, which are called both at AST and on thread/process exit.  For
instance, ast(), exit1(), and NFS server no longer need to be aware
about UFS softdep processing.

The dynamic registration also allows third-party modules to register AST
handlers if needed.  There is one caveat with loadable modules: the
code does not make any effort to ensure that the module is not unloaded
before all threads processed through AST handler in it.  In fact, this
is already present behavior for hwpmc.ko and ufs.ko.  I do not think it
is worth the efforts and the runtime overhead to try to fix it.

Reviewed by:	markj
Tested by:	emaste (arm64), pho
Discussed with:	jhb
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D35888

linux(4): Trace Linux l_sigset_t.

2022-06-22T11:09:54+00:00

MFC after:		2 weeks