src/sys/modules/hwpmc, branch main

hwpmc: Initial support for AMD IBS

2026-02-27T21:22:16+00:00

This patch adds support for AMD IBS.  It adds a new class of performance
counter that cotains two events: ibs-fetch and ibs-op events. Unlike
most existing sampled events, IBS events provide a number of values
containing extra information regarding the sample.  To support this we
use the existing callchain event, and introduce a new flag for multipart
payloads.  The first 8 bytes of the pc_sample contains a header that
defines up to four payloads.

Sponsored by: Netflix

Reviewed by: imp,mhorne
Pull Request: https://github.com/freebsd/freebsd-src/pull/2022

sys: Remove $FreeBSD$: one-line sh pattern

2023-08-16T17:54:58+00:00

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

sys/modules: fix bogus OPT_ACPI tests

2023-03-01T18:32:08+00:00

ACPI is not handled specially by sys/conf/kern.opts.mk (unlike a few
options), so we should fall back on the generic behavior of
sys/conf/config.mk, which pulls from all the generated opt*.h files,
including opt_acpi.h, which will cause DEV_ACPI to be included in
KERN_OPTS.  Then the generic machinery in sys/conf/kmod.mk will cause
SRCS.DEV_ACPI to be included in SRCS when appropriate.

Reviewed by:	jhb, imp
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D38737

hwpmc: Don't wrap entire files in #ifdef DEV_ACPI.

2023-03-01T18:31:53+00:00

A subsequent commit will instead use existing infrastructure to
exclude the files from hwpmc.ko for non-ACPI builds.  Note that the
original commit left the files as optional in sys/conf/files.arm64.

This reverts commit 751d88119fdc1dff71d1390c7768942a9b857bc6.

Sponsored by:	DARPA
Differential Revision:	https://reviews.freebsd.org/D38736

Fix loading the hwpmc module when ACPI is enabled

2022-12-22T10:36:18+00:00

In 0a9a4d2cd6092 a check for OPT_ACPI was added to the hwpmc Makefile
to fix loading the module in a kernel where ACPI has been disabled.
This broke loading the module when ACPI was enabled in the build as
OPT_ACPI isn't a Makefile macro so was always disabled.

Move this check to the C files where the DEV_ACPI macro does exist.

Reviewed by:	gnn
Sponsored by:	Arm Ltd
Differential Revision:	https://reviews.freebsd.org/D37773

arm64: Fix hwpmc module for OPT_ACPI isn't selected

2022-08-31T07:25:39+00:00

Fixes: 59191f3573f6 ("Add support of ARM CMN-600 controller ...")
Sponsored by:	Beckhoff Automation GmbH & Co. KG

Add support of ARM CMN-600 controller, PMU access functions only. Add support of PMU counters of ARM CMN-600 controller.

2022-06-26T19:03:04+00:00

Add support of ARM CMN-600 controller, PMU access functions only.
Add support of PMU counters of ARM CMN-600 controller.

Reviewed by: mhorne
Sponsored By: ARM
Differential Revision: https://reviews.freebsd.org/D32321

The Arm CoreLink DMC-620 Dynamic Memory Controller PMU driver

2022-06-26T18:57:56+00:00

Add the Arm CoreLink DMC-620 Dynamic Memory Controller PMU driver
Add DMC-620 support to hwpmc(4)

Reviewed by: mhorne
Sponsored By: Ampere Computing
Differential Revision: https://reviews.freebsd.org/D32670

[PowerPC] hwpmc: add support for POWER8/9 PMCs

2020-11-05T16:36:39+00:00

This change adds support for POWER8 and POWER9 PMCs (bare metal and
pseries).
All PowerISA 2.07B non-random events are supported.

Implementation was based on that of PPC970.

Reviewed by:	jhibbits
Sponsored by:	Eldorado Research Institute (eldorado.org.br)
Differential Revision:	https://reviews.freebsd.org/D26110

Remove sparc64 kernel support

2020-02-03T17:35:11+00:00

Remove all sparc64 specific files
Remove all sparc64 ifdefs
Removee indireeect sparc64 ifdefs