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arm64: mpam: Select ARCH_HAS_CPU_RESCTRL

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Enough MPAM support is present to enable ARCH_HAS_CPU_RESCTRL.  Let it
rip^Wlink!

ARCH_HAS_CPU_RESCTRL indicates resctrl can be enabled. It is enabled by the
arch code simply because it has 'arch' in its name.

This removes ARM_CPU_RESCTRL as a mimic of X86_CPU_RESCTRL.  While here,
move the ACPI dependency to the driver's Kconfig file.

Tested-by: Gavin Shan <gshan@redhat.com>
Tested-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Tested-by: Peter Newman <peternewman@google.com>
Tested-by: Zeng Heng <zengheng4@huawei.com>
Tested-by: Punit Agrawal <punit.agrawal@oss.qualcomm.com>
Tested-by: Jesse Chick <jessechick@os.amperecomputing.com>
Reviewed-by: Zeng Heng <zengheng4@huawei.com>
Reviewed-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Co-developed-by: Ben Horgan <ben.horgan@arm.com>
Signed-off-by: Ben Horgan <ben.horgan@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
This commit is contained in:
James Morse
2026-03-13 14:46:10 +00:00
parent efc775eadc
commit 4aab135bda
4 changed files with 11 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm64/Kconfig
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@@ -2017,7 +2017,7 @@ config ARM64_TLB_RANGE
config ARM64_MPAM
bool "Enable support for MPAM"
select ARM64_MPAM_DRIVER
select ACPI_MPAM if ACPI
select ARCH_HAS_CPU_RESCTRL
help
Memory System Resource Partitioning and Monitoring (MPAM) is an
optional extension to the Arm architecture that allows each

2
arch/arm64/include/asm/resctrl.h Normal file
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@@ -0,0 +1,2 @@
/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/arm_mpam.h>

7
drivers/resctrl/Kconfig
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@@ -1,6 +1,7 @@
menuconfig ARM64_MPAM_DRIVER
bool "MPAM driver"
depends on ARM64 && ARM64_MPAM
select ACPI_MPAM if ACPI
help
Memory System Resource Partitioning and Monitoring (MPAM) driver for
System IP, e.g. caches and memory controllers.
@@ -22,3 +23,9 @@ config MPAM_KUNIT_TEST
If unsure, say N.
endif
config ARM64_MPAM_RESCTRL_FS
bool
default y if ARM64_MPAM_DRIVER && RESCTRL_FS
select RESCTRL_RMID_DEPENDS_ON_CLOSID
select RESCTRL_ASSIGN_FIXED

2
drivers/resctrl/Makefile
View File

@@ -1,5 +1,5 @@
obj-$(CONFIG_ARM64_MPAM_DRIVER) += mpam.o
mpam-y += mpam_devices.o
mpam-$(CONFIG_ARM_CPU_RESCTRL) += mpam_resctrl.o
mpam-$(CONFIG_ARM64_MPAM_RESCTRL_FS) += mpam_resctrl.o
ccflags-$(CONFIG_ARM64_MPAM_DRIVER_DEBUG) += -DDEBUG