pmc.amd(3): rename from pmc.k8(3)

This is the first step in recognizing that the K8 microarchitecture
represents a small and aged subset of AMD CPUs supported by this class.
Future changes will update the code and documentation details to better
reflect this.

Keep the old filename as an alias.

Reviewed by: jkoshy
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D41279

pmc: remove last bits of AMD K7 CPU support

This includes event definitions from sys/pmc_events.h, definitions from
sys/pmc.h, and the man pages.

Reviewed by: jkoshy
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D41275

Remove $FreeBSD$: two-line nroff pattern

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

pmc.sandybridge(3): Fix a few EVENT_ vs Event inconsistencies

Every event other than these four is listed as Event X, Umask Y; fix
these to conform to that style.

pmc(3): remove Pentium-related man pages and references

Support for Pentium events was removed completely in e92a1350b50e.

Don't bump .Dd where we are just removing xrefs.

Reviewed by: emaste
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D31423

pmc(3): mandoc clean ups

- new sentence, new line
- tab in filled text
- unusual Xr order
- skipping paragraph macro: Pp before Ss

Reviewed by: bcr
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D31143

Fix a few mandoc issues

- skipping paragraph macro: Pp after Sh
- sections out of conventional order: Sh EXAMPLES
- whitespace at end of input line
- normalizing date format

Fix Sandy Bridge+ hwpmc branch counters

On Sandy Bridge and later, to count branch-related events you
have to or together a mask indicating the type of branch
instruction to count (e.g. direct jump, branch, etc) and a bits
indicating whether to count taken and not-taken branches. The
current counter definitions where defining this bits individually,
so the counters never worked and always just counted 0.

Fix the counter definitions to instead contain the proper
combination of masks. Also update the man pages to reflect the
new counters.

Differential Revision: https://reviews.freebsd.org/D1587
MFC after: 1 month
Sponsored by: Sandvine Inc.

use .Mt to mark up email addresses consistently (part3)

PR: 191174
Submitted by: Franco Fichtner <franco at lastsummer.de>

Update hwpmc to support the Xeon class of Ivybridge processors.
case 0x3E: /* Per Intel document 325462-045US 01/2013. */

Add manpage to document all the goodness that is available in this
processor model.

No support for uncore events at this time.

Submitted by: hiren panchasara <hiren.panchasara@gmail.com>
Reviewed by: davide, jimharris, sbruno
Obtained from: Yahoo! Inc.
MFC after: 2 weeks

Cleanup and rename some variables in libpmc and hwpmc.

Submitted by: hiren panchasara <hiren.panchasara@gmail.com>
Reviewed by: jimharris@ sbruno@
Obtained from: Yahoo! Inc.
MFC after: 2 weeks

Update man page crossreferences to sandybridge xeon class

MFC after: 2 weeks

Add Intel Ivy Bridge support to hwpmc(9).
Update offcore RSP token for Sandy Bridge.
Note: No uncore support.

Will works on Family 6 Model 3a.

MFC after: 1 month
Tested by: bapt, grehan

Add software PMC support.

New kernel events can be added at various location for sampling or counting.
This will for example allow easy system profiling whatever the processor is
with known tools like pmcstat(8).

Simultaneous usage of software PMC and hardware PMC is possible, for example
looking at the lock acquire failure, page fault while sampling on
instructions.

Sponsored by: NETASQ
MFC after: 1 month

Kill EoL whitespaces, and minor lint.

- Add support for the Intel Sandy Bridge microarchitecture (both core and uncore counting events)
- New manpages with event lists.
- Add MSRs for the Intel Sandy Bridge microarchitecture

Reviewed by: attilio, brueffer, fabient
Approved by: gnn (mentor)
MFC after: 3 weeks