drivers/perf/Kconfig

Source file repositories/reference/linux-study-clean/drivers/perf/Kconfig

File Facts

System: Linux kernel
Corpus path: drivers/perf/Kconfig
Extension: [no extension]
Size: 10134 bytes
Lines: 329
Domain: Driver Families
Bucket: drivers/perf
Inferred role: Driver Families: build/configuration rule
Status: atlas-only

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
Touches IRQ or DMA behavior; this matters for the representative real-device path.

Dependency Surface

No C-style include directives detected by the generator.

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0-only
#
# Performance Monitor Drivers
#

menu "Performance monitor support"
	depends on PERF_EVENTS

config ARM_CCI_PMU
	tristate "ARM CCI PMU driver"
	depends on (ARM && CPU_V7) || ARM64
	select ARM_CCI
	help
	  Support for PMU events monitoring on the ARM CCI (Cache Coherent
	  Interconnect) family of products.

	  If compiled as a module, it will be called arm-cci.

config ARM_CCI400_PMU
	bool "support CCI-400"
	default y
	depends on ARM_CCI_PMU
	select ARM_CCI400_COMMON
	help
	  CCI-400 provides 4 independent event counters counting events related
	  to the connected slave/master interfaces, plus a cycle counter.

config ARM_CCI5xx_PMU
	bool "support CCI-500/CCI-550"
	default y
	depends on ARM_CCI_PMU
	help
	  CCI-500/CCI-550 both provide 8 independent event counters, which can
	  count events pertaining to the slave/master interfaces as well as the
	  internal events to the CCI.

config ARM_CCN
	tristate "ARM CCN driver support"
	depends on ARM || ARM64 || COMPILE_TEST
	help
	  PMU (perf) driver supporting the ARM CCN (Cache Coherent Network)
	  interconnect.

config ARM_CMN
	tristate "Arm CMN-600 PMU support"
	depends on ARM64 || COMPILE_TEST
	help
	  Support for PMU events monitoring on the Arm CMN-600 Coherent Mesh
	  Network interconnect.

config ARM_NI
	tristate "Arm NI-700 PMU support"
	depends on ARM64 || COMPILE_TEST
	help
	  Support for PMU events monitoring on the Arm NI-700 Network-on-Chip
	  interconnect and family.

config ARM_PMU
	depends on ARM || ARM64
	bool "ARM PMU framework"
	default y
	help
	  Say y if you want to use CPU performance monitors on ARM-based
	  systems.

config ARM_V6_PMU
	depends on ARM_PMU && (CPU_V6 || CPU_V6K)
	def_bool y

config ARM_V7_PMU

Annotation

Atlas domain: Driver Families / drivers/perf.
Implementation status: atlas-only.
IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.