sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remov

sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/
Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/

Sponsored by: Netflix

show more ...

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

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

MFHead @348740

Sponsored by: The FreeBSD Foundation

Extract eventfilter declarations to sys/_eventfilter.h

This allows replacing "sys/eventfilter.h" includes with "sys/_eventfilter.h"
in other header files (e.g., sys/{bus,conf,cpu}.h) and reduces hea

Extract eventfilter declarations to sys/_eventfilter.h

This allows replacing "sys/eventfilter.h" includes with "sys/_eventfilter.h"
in other header files (e.g., sys/{bus,conf,cpu}.h) and reduces header
pollution substantially.

EVENTHANDLER_DECLARE and EVENTHANDLER_LIST_DECLAREs were moved out of .c
files into appropriate headers (e.g., sys/proc.h, powernv/opal.h).

As a side effect of reduced header pollution, many .c files and headers no
longer contain needed definitions. The remainder of the patch addresses
adding appropriate includes to fix those files.

LOCK_DEBUG and LOCK_FILE_LINE_ARG are moved to sys/_lock.h, as required by
sys/mutex.h since r326106 (but silently protected by header pollution prior
to this change).

No functional change (intended). Of course, any out of tree modules that
relied on header pollution for sys/eventhandler.h, sys/lock.h, or
sys/mutex.h inclusion need to be fixed. __FreeBSD_version has been bumped.

show more ...

MFHead @347527

Sponsored by: The FreeBSD Foundation

powerpc/powernv: Fix issues in opal_async

* Properly return the full opal_msg from an async completion.
* Don't keep bugging OPAL, wait 100us or so. With some minor changes to
DELAY() to drop to

powerpc/powernv: Fix issues in opal_async

* Properly return the full opal_msg from an async completion.
* Don't keep bugging OPAL, wait 100us or so. With some minor changes to
DELAY() to drop to very low priority, the thread won't hog the CPU while
polling for the async completion.

show more ...

MFHead@r345880

powernv: Port OPAL asynchronous framework to use the new message framework

Since OPAL_GET_MSG does not discriminate between message types, asynchronous
completion events may be received in the OPAL_

powernv: Port OPAL asynchronous framework to use the new message framework

Since OPAL_GET_MSG does not discriminate between message types, asynchronous
completion events may be received in the OPAL_GET_MSG call, which dequeues
them from the list, thus preventing OPAL_CHECK_ASYNC_COMPLETION from
succeeding. Handle this case by integrating with the messaging framework.

show more ...

MFHead@r345275

MFhead@r344786

Merge ^/head r344549 through r344775.

powerpc/powernv: Add asynchronous token management for powernv

The OPAL firmware only supports a finite number of in-flight asynchronous
operations. Rather than have each subsystem try to manage it

powerpc/powernv: Add asynchronous token management for powernv

The OPAL firmware only supports a finite number of in-flight asynchronous
operations. Rather than have each subsystem try to manage its own, use a
central management service to hand out tokens.

More work can be done to improve asynchronous behavior, such as funneling
things through a future OPAL heartbeat handler, but capabilities will be
added as needed.

Augment the existing consumers (i2c and sensors) to use this new API.

MFC after: 4 weeks

show more ...