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d25f002575
- Add infrastructure for supporting background commands along with
support for device sanitization and firmware update
- Introduce a CXL performance monitoring unit driver based on the common
definition in the specification.
- Land some preparatory cleanup and refactoring for the anticipated
arrival of CXL type-2 (accelerator devices) and CXL RCH (CXL-v1.1
topology) error handling.
- Rework CPU cache management with respect to region configuration
(device hotplug or other dynamic changes to memory interleaving)
- Fix region reconfiguration vs CXL decoder ordering rules.
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Merge tag 'cxl-for-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull CXL updates from Dan Williams:
"The highlights in terms of new functionality are support for the
standard CXL Performance Monitor definition that appeared in CXL 3.0,
support for device sanitization (wiping all data from a device),
secure-erase (re-keying encryption of user data), and support for
firmware update. The firmware update support is notable as it reuses
the simple sysfs_upload interface to just cat(1) a blob to a sysfs
file and pipe that to the device.
Additionally there are a substantial number of cleanups and
reorganizations to get ready for RCH error handling (RCH == Restricted
CXL Host == current shipping hardware generation / pre CXL-2.0
topologies) and type-2 (accelerator / vendor specific) devices.
For vendor specific devices they implement a subset of what the
generic type-3 (generic memory expander) driver expects. As a result
the rework decouples optional infrastructure from the core driver
context.
For RCH topologies, where the specification working group did not want
to confuse pre-CXL-aware operating systems, many of the standard
registers are hidden which makes support standard bus features like
AER (PCIe Advanced Error Reporting) difficult. The rework arranges for
the driver to help the PCI-AER core. Bjorn is on board with this
direction but a late regression disocvery means the completion of this
functionality needs to cook a bit longer, so it is code
reorganizations only for now.
Summary:
- Add infrastructure for supporting background commands along with
support for device sanitization and firmware update
- Introduce a CXL performance monitoring unit driver based on the
common definition in the specification.
- Land some preparatory cleanup and refactoring for the anticipated
arrival of CXL type-2 (accelerator devices) and CXL RCH (CXL-v1.1
topology) error handling.
- Rework CPU cache management with respect to region configuration
(device hotplug or other dynamic changes to memory interleaving)
- Fix region reconfiguration vs CXL decoder ordering rules"
* tag 'cxl-for-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (51 commits)
cxl: Fix one kernel-doc comment
cxl/pci: Use correct flag for sanitize polling
docs: perf: Minimal introduction the the CXL PMU device and driver
perf: CXL Performance Monitoring Unit driver
tools/testing/cxl: add firmware update emulation to CXL memdevs
tools/testing/cxl: Use named effects for the Command Effect Log
tools/testing/cxl: Fix command effects for inject/clear poison
cxl: add a firmware update mechanism using the sysfs firmware loader
cxl/test: Add Secure Erase opcode support
cxl/mem: Support Secure Erase
cxl/test: Add Sanitize opcode support
cxl/mem: Wire up Sanitization support
cxl/mbox: Add sanitization handling machinery
cxl/mem: Introduce security state sysfs file
cxl/mbox: Allow for IRQ_NONE case in the isr
Revert "cxl/port: Enable the HDM decoder capability for switch ports"
cxl/memdev: Formalize endpoint port linkage
cxl/pci: Unconditionally unmask 256B Flit errors
cxl/region: Manage decoder target_type at decoder-attach time
cxl/hdm: Default CXL_DEVTYPE_DEVMEM decoders to CXL_DECODER_DEVMEM
...
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# SPDX-License-Identifier: GPL-2.0-only
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#
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# Performance Monitor Drivers
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#
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menu "Performance monitor support"
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depends on PERF_EVENTS
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config ARM_CCI_PMU
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tristate "ARM CCI PMU driver"
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depends on (ARM && CPU_V7) || ARM64
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select ARM_CCI
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help
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Support for PMU events monitoring on the ARM CCI (Cache Coherent
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Interconnect) family of products.
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If compiled as a module, it will be called arm-cci.
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config ARM_CCI400_PMU
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bool "support CCI-400"
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default y
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depends on ARM_CCI_PMU
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select ARM_CCI400_COMMON
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help
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CCI-400 provides 4 independent event counters counting events related
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to the connected slave/master interfaces, plus a cycle counter.
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config ARM_CCI5xx_PMU
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bool "support CCI-500/CCI-550"
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default y
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depends on ARM_CCI_PMU
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help
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CCI-500/CCI-550 both provide 8 independent event counters, which can
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count events pertaining to the slave/master interfaces as well as the
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internal events to the CCI.
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config ARM_CCN
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tristate "ARM CCN driver support"
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depends on ARM || ARM64 || COMPILE_TEST
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help
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PMU (perf) driver supporting the ARM CCN (Cache Coherent Network)
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interconnect.
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config ARM_CMN
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tristate "Arm CMN-600 PMU support"
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depends on ARM64 || COMPILE_TEST
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help
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Support for PMU events monitoring on the Arm CMN-600 Coherent Mesh
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Network interconnect.
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config ARM_PMU
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depends on ARM || ARM64
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bool "ARM PMU framework"
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default y
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help
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Say y if you want to use CPU performance monitors on ARM-based
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systems.
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config RISCV_PMU
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depends on RISCV
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bool "RISC-V PMU framework"
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default y
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help
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Say y if you want to use CPU performance monitors on RISCV-based
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systems. This provides the core PMU framework that abstracts common
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PMU functionalities in a core library so that different PMU drivers
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can reuse it.
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config RISCV_PMU_LEGACY
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depends on RISCV_PMU
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bool "RISC-V legacy PMU implementation"
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default y
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help
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Say y if you want to use the legacy CPU performance monitor
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implementation on RISC-V based systems. This only allows counting
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of cycle/instruction counter and doesn't support counter overflow,
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or programmable counters. It will be removed in future.
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config RISCV_PMU_SBI
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depends on RISCV_PMU && RISCV_SBI
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bool "RISC-V PMU based on SBI PMU extension"
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default y
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help
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Say y if you want to use the CPU performance monitor
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using SBI PMU extension on RISC-V based systems. This option provides
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full perf feature support i.e. counter overflow, privilege mode
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filtering, counter configuration.
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config ARM_PMU_ACPI
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depends on ARM_PMU && ACPI
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def_bool y
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config ARM_SMMU_V3_PMU
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tristate "ARM SMMUv3 Performance Monitors Extension"
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depends on (ARM64 && ACPI) || (COMPILE_TEST && 64BIT)
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depends on GENERIC_MSI_IRQ
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help
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Provides support for the ARM SMMUv3 Performance Monitor Counter
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Groups (PMCG), which provide monitoring of transactions passing
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through the SMMU and allow the resulting information to be filtered
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based on the Stream ID of the corresponding master.
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config ARM_PMUV3
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depends on HW_PERF_EVENTS && ((ARM && CPU_V7) || ARM64)
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bool "ARM PMUv3 support" if !ARM64
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default ARM64
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help
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Say y if you want to use the ARM performance monitor unit (PMU)
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version 3. The PMUv3 is the CPU performance monitors on ARMv8
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(aarch32 and aarch64) systems that implement the PMUv3
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architecture.
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config ARM_DSU_PMU
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tristate "ARM DynamIQ Shared Unit (DSU) PMU"
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depends on ARM64
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help
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Provides support for performance monitor unit in ARM DynamIQ Shared
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Unit (DSU). The DSU integrates one or more cores with an L3 memory
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system, control logic. The PMU allows counting various events related
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to DSU.
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config FSL_IMX8_DDR_PMU
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tristate "Freescale i.MX8 DDR perf monitor"
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depends on ARCH_MXC || COMPILE_TEST
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help
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Provides support for the DDR performance monitor in i.MX8, which
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can give information about memory throughput and other related
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events.
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config FSL_IMX9_DDR_PMU
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tristate "Freescale i.MX9 DDR perf monitor"
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depends on ARCH_MXC
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help
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Provides support for the DDR performance monitor in i.MX9, which
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can give information about memory throughput and other related
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events.
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config QCOM_L2_PMU
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bool "Qualcomm Technologies L2-cache PMU"
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depends on ARCH_QCOM && ARM64 && ACPI
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select QCOM_KRYO_L2_ACCESSORS
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help
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Provides support for the L2 cache performance monitor unit (PMU)
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in Qualcomm Technologies processors.
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Adds the L2 cache PMU into the perf events subsystem for
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monitoring L2 cache events.
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config QCOM_L3_PMU
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bool "Qualcomm Technologies L3-cache PMU"
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depends on ARCH_QCOM && ARM64 && ACPI
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select QCOM_IRQ_COMBINER
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help
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Provides support for the L3 cache performance monitor unit (PMU)
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in Qualcomm Technologies processors.
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Adds the L3 cache PMU into the perf events subsystem for
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monitoring L3 cache events.
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config THUNDERX2_PMU
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tristate "Cavium ThunderX2 SoC PMU UNCORE"
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depends on ARCH_THUNDER2 || COMPILE_TEST
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depends on NUMA && ACPI
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default m
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help
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Provides support for ThunderX2 UNCORE events.
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The SoC has PMU support in its L3 cache controller (L3C) and
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in the DDR4 Memory Controller (DMC).
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config XGENE_PMU
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depends on ARCH_XGENE || (COMPILE_TEST && 64BIT)
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bool "APM X-Gene SoC PMU"
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default n
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help
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Say y if you want to use APM X-Gene SoC performance monitors.
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config ARM_SPE_PMU
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tristate "Enable support for the ARMv8.2 Statistical Profiling Extension"
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depends on ARM64
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help
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Enable perf support for the ARMv8.2 Statistical Profiling
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Extension, which provides periodic sampling of operations in
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the CPU pipeline and reports this via the perf AUX interface.
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config ARM_DMC620_PMU
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tristate "Enable PMU support for the ARM DMC-620 memory controller"
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depends on (ARM64 && ACPI) || COMPILE_TEST
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help
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Support for PMU events monitoring on the ARM DMC-620 memory
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controller.
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config MARVELL_CN10K_TAD_PMU
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tristate "Marvell CN10K LLC-TAD PMU"
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depends on ARCH_THUNDER || (COMPILE_TEST && 64BIT)
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help
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Provides support for Last-Level cache Tag-and-data Units (LLC-TAD)
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performance monitors on CN10K family silicons.
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config APPLE_M1_CPU_PMU
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bool "Apple M1 CPU PMU support"
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depends on ARM_PMU && ARCH_APPLE
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help
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Provides support for the non-architectural CPU PMUs present on
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the Apple M1 SoCs and derivatives.
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config ALIBABA_UNCORE_DRW_PMU
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tristate "Alibaba T-Head Yitian 710 DDR Sub-system Driveway PMU driver"
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depends on (ARM64 && ACPI) || COMPILE_TEST
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help
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Support for Driveway PMU events monitoring on Yitian 710 DDR
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Sub-system.
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source "drivers/perf/hisilicon/Kconfig"
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config MARVELL_CN10K_DDR_PMU
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tristate "Enable MARVELL CN10K DRAM Subsystem(DSS) PMU Support"
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depends on ARCH_THUNDER || (COMPILE_TEST && 64BIT)
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help
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Enable perf support for Marvell DDR Performance monitoring
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event on CN10K platform.
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source "drivers/perf/arm_cspmu/Kconfig"
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source "drivers/perf/amlogic/Kconfig"
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config CXL_PMU
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tristate "CXL Performance Monitoring Unit"
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depends on CXL_BUS
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help
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Support performance monitoring as defined in CXL rev 3.0
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section 13.2: Performance Monitoring. CXL components may have
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one or more CXL Performance Monitoring Units (CPMUs).
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Say 'y/m' to enable a driver that will attach to performance
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monitoring units and provide standard perf based interfaces.
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If unsure say 'm'.
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endmenu
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