atomic(9): Update manpage after constifying atomic loads

MFC after: 5 days
Sponsored by: The FreeBSD Foundation

atomic(9): Implement atomic_testand(clear|set)_ptr

For current architectures, these are just aliases for the existing
operation on the relevant scalar integer.

Reviewed by: imp, kib
Obtained from:

atomic(9): Implement atomic_testand(clear|set)_ptr

For current architectures, these are just aliases for the existing
operation on the relevant scalar integer.

Reviewed by: imp, kib
Obtained from: CheriBSD
Sponsored by: AFRL, DARPA
Differential Revision: https://reviews.freebsd.org/D47631

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atomic.9: Document atomic_testand*_64 and atomic_testandset_acq_long

Reviewed by: kib
Sponsored by: AFRL, DARPA
Differential Revision: https://reviews.freebsd.org/D47630

Remove $FreeBSD$: two-line nroff pattern

Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/

atomic.9: Remove the stated dependency on types.h

All machine/atomic.h necessarily include sys/atomic_common.h, which
brings in types.h.

Reviewed by: imp, kib
MFC after: 1 week
Differential Revisio

atomic.9: Remove the stated dependency on types.h

All machine/atomic.h necessarily include sys/atomic_common.h, which
brings in types.h.

Reviewed by: imp, kib
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D38040

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Fix a slew of mdoc warnings/errors.

atomic(9): note that atomic_interrupt_fence first appeared in 13.0

MFC after: 3 days
Sponsored by: The FreeBSD Foundation

atomic: add atomic_interrupt_fence()

with the semantic following C11 signal_fence, that is, it establishes
ordering between its place and any interrupt handler executing on the
same CPU.

Reviewed b

atomic: add atomic_interrupt_fence()

with the semantic following C11 signal_fence, that is, it establishes
ordering between its place and any interrupt handler executing on the
same CPU.

Reviewed by: markj, mjg, rlibby
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D28909

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Fix various, mostly minor errors in man pages like:
- Abbreviated month name in .Dd
- position of HISTORY section
- alphabetical ordering within SEE ALSO section
- adding .Ed before .Sh DESCRIPTION
-

Fix various, mostly minor errors in man pages like:
- Abbreviated month name in .Dd
- position of HISTORY section
- alphabetical ordering within SEE ALSO section
- adding .Ed before .Sh DESCRIPTION
- remove trailing whitespaces
- Line break after a sentence stop
- Use BSD OS macros instead of hardcoded strings

No .Dd bumps as there was no actual content change made
in any of these pages.

Submitted by: Gordon Bergling gbergling_gmail.com
Approved by: bcr
Differential Revision: https://reviews.freebsd.org/D24591

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i386: Implement atomic_load_64(9) and atomic_store_64(9).

Sponsored by: The FreeBSD Foundation
MFC after: 1 week

MFHead@r345275

MFhead@r344996

Drop "All rights reserved" from my copyright statements.

Reviewed by: rgrimes
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D19485

Merge ^/head r326936 through r327149.

Update HISTORY section for the atomic(9) page.

In collaboration with: alc
Sponsored by: The FreeBSD Foundation (kib)
MFC after: 1 week

Document the semantics of atomic_thread_fence operations.

Add atomic_load_<type> and atomic_store_<type>, and explain why they
exist.

Define the synchronizes-with relationship and its effects.

Reo

Document the semantics of atomic_thread_fence operations.

Add atomic_load_<type> and atomic_store_<type>, and explain why they
exist.

Define the synchronizes-with relationship and its effects.

Reorder and revise some of the existing text. For example, more
precisely describe when ordinary accesses are atomic.

Reviewed by: jhb, kib
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D13522

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Merge ^/head r323559 through r325504.

MFhead@r325004

Expand explanation of atomicity.

Mention per-location total order, out of thin air, and torn writes
guarantees. Mention C11 standard' memory model and one most important
FreeBSD additional requirem

Expand explanation of atomicity.

Mention per-location total order, out of thin air, and torn writes
guarantees. Mention C11 standard' memory model and one most important
FreeBSD additional requirement, that is aligned ordinary loads and
stores are atomic on processors.

The text is introductional and informal. Reference the C11 and
C++1{1,4,7} standards for authorative description.

In collaboration with: alc
Sponsored by: The FreeBSD Foundation (kib)
MFC after: 1 week

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Add support for 8- and 16-bit atomic_(f)cmpset to x86.

Reviewed by: kib
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D10068

Merge ^/head r311132 through r311305.

Fix typo

Add the upcoming atomic_fcmpset family to the atomic(9) man page.

These primitives give the caller the read value if the exchange attempt
failed which saves an explicit reload for cmpset loops.

The

Add the upcoming atomic_fcmpset family to the atomic(9) man page.

These primitives give the caller the read value if the exchange attempt
failed which saves an explicit reload for cmpset loops.

The man page was partially submitted by kib.

Reviewed by: kib (previous version), jhb (previous version)

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atomic: Add testandclear on i386/amd64

Reviewed by: kib
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D6381

Merge from head

Sponsored by: Gandi.net